Screen News (including CRT, LCD, and maybe even electroluminescent) ////////////////////////////////////////////////////////////////////////////// [SLIGHTLY TANGENTIAL ITEM: Sometimes people ask about video-signal scan converters (VGA to NTSC, VGA to PAL, S-Video. etc.). A handy source of converter, switching, and splitting devices is Black Box Corporation. The on-line catalog is available in exquisite detail on the Web: http://www.blackbox.com/catalog/index.htm Reading the catalog requires Adobe "Acrobat Reader": http://www.adobe.com/supportservice/custsupport/download.html [END TANGENT] :...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...: Newsgroups: comp.sys.mac.hardware,comp.sys.ibm.pc.hardware,comp.terminals Path: cs.utk.edu!avdms8.msfc.nasa.gov!europa.eng.gtefsd.com!uunet!nds!mark Organization: Northwest Digital Systems Message-ID: <1993Oct06.162953.7723@nds.com> References: <1993Sep30.204016.23725@news.eng.convex.com> Lines: 49 Date: Wed, 06 Oct 1993 16:29:53 GMT From: mark@nds.com (Mark Champion) Subject: Re: Hooking up an old tube! (BNC connector etc.) blee@convex.com (Benjamin Lee) writes: : Greetings, : : I recently bought a Misubishi's 19" tube with the old BNC type of connector : on the back. The tube does not have multisync. : : Can anyone tell me how to DIY or where to look for info for 2 things: : : 1. Solder a SVGA connector to the back panel from the BNC connection. I : understand there are converter on the market selling for $30. : I prefer solder my own for $6. : 2. Solder a rheostat/potenialmeter or something to change the sync manually. : : Little more info: : On the back, it says this is misubishi era 1985, sold by microdynamics. : There is a 75 ohm/high switch on side of each BNC connectors. There are 5 : pairs of BNC connectors: red, green, blue, comp/HD, VD. : : On opening the hood, there are dial for H-hold, V-height, V-lin, H-phase, : V-hold 1 2, H-cent, H-width, PCC-amp, PCC-phase, V-cent, comp HD/VD, : int-sync, ext-sync, gain for three colors. : First, you need to determine if this monitor will run at the correct horizontal frequency for your computer. Monitors of that vintage were single frequency monitors and will only run correctly at the correct h freq. Attempting to run at another h freq will either not work or will cause failure of some component such as the flyback transformer or both. You can be 99% sure that you cannot change the sync by soldering in some component. You must adapt to the monitor. If you cannot adapt to the monitor, give up. The good news is that it is easy to drive a 5 BNC input monitor with VGA signals. There is a 1-1 correspondance between the two standards. You can find the connection description in most VGA board documentation. I strongly encourage you to purchase an adapter cable for this. If you attempt to solder something together, it will work but it will impact the video clarity. That is to say you will be looking at shadows on your screen. You may want to solder something together just to find out if this monitor will work with your computer at all and then buy the adapter cable. good luck. Mark Champion | Northwest Digital Systems UUCP: uunet!nds!mark | Voice: 206-524-0014 Internet: mark@nds.com | FAX: 206-524-3440 :...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...: Newsgroups: comp.sys.dec,comp.unix.osf.osf1,comp.os.vms Path: cs.utk.edu!emory!swrinde!howland.reston.ans.net!spool.mu.edu !bloom-beacon.mit.edu!crl.dec.com!crl.dec.com!nntpd.lkg.dec.com !lkg.dec.com!thomas Organization: Digital Equipment Corporation Sender: thomas@netrix.lkg.dec.com (Matt Thomas) Message-ID: <3glfl6$hkc@nntpd.lkg.dec.com> References: <3giqo3$f9m@crl.crl.com> Date: 31 Jan 1995 13:57:58 GMT From: thomas@lkg.dec.com (Matt Thomas) Subject: Re: DEC Monitor refresh rates? In article <3giqo3$f9m@crl.crl.com>, cgi@crl.com (Paul Smith) writes: |> |>We have 4 DEC Alpha and VAX boxes that came with 19" --> 21" trinitron |>monitors with 3 BNC connectors. Does anybody know the Resolution and |>refresh rates for these monitors? |> |>I.E. Horizontial= XXX Hz |> Vertical = XXX Hz |> 1280x1024 pixels at 80Hz refresh |> |>... |> |>My hope is to learn enough about these monitors to hook one of them up to |>a PC VGA controller?? None of those monitor or multi-sync and none of them are VGA compatible. They will use one of these three values: Resolution Vertical (hz) Horiz. (Khz) Bandwidth (Mhz) "1024x864" 72.03 57.38 74.30 "1280x1024" 66.51 70.70 119.84 "1280x1024" 72.56 77.17 130.8 And sync is always on green. -- Matt Thomas Internet: thomas@lkg.dec.com U*X Networking WWW URL: http://ftp.dec.com/%7Ethomas/ Digital Equipment Corporation Disclaimer: This message reflects my Littleton, MA own warped views, etc. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.os.vms,comp.sys.dec,vmsnet.misc,comp.periphs Path: cs.utk.edu!gatech!howland.reston.ans.net!vixen.cso.uiuc.edu !moe.ksu.ksu.edu!mccall!cmkrnl!jeh Message-ID: <1993Aug29.040921.2621@cmkrnl.com> References: <1993Aug25.100736.30@flying-disk.com> <28AUG199318033504@erich.triumf.ca> Organization: Kernel Mode Systems, San Diego, CA Date: 29 Aug 1993 04:09:21 PDT From: jeh@cmkrnl.com Subject: Re: Need VT-220 type terminal for 132 column use In article <28AUG199318033504@erich.triumf.ca>, music@erich.triumf.ca (FRED W. BACH) writes: > FLAME ON!. (not intended at Alan. He's OK.) > [...] > Ah! Another case of throwing out the baby with the bathwater when > It seems the z-axis modulation on the xterms and the VAXstations is > not much better. Uniform, yes, but not intense enough. The front-panel > brightness and contrast controls don't eliminate the problem. We can get > black characters on a white background on an 80-char line, but when I > set term/width=132, then the characters seem to turn grey and fuzzy, not > black and crisp. One thing the crt screen hardware needs is a clever little > high-frequency gamma correction. I don't know what kind of monitors you're using... but if they're color, you have a basic problem: To render single-pixel fonts really well, you need about two triads per pixel, and three would be preferable. There are NO monitors with a dot pitch fine enough and a screen large enough to provide this, not at 1280x1024 or 1024x864, not at least until you get into stratospheric pricing. (And such monitors will be used on very-high-end CAD workstations at 1600x1200 or even 2000x1500, so you have the same problem all over again.) If this is the problem, gamma correction isn't going to help. If you want to display a black pixel in between two light pixels and the dot triads on the CRT at that particular point in the scan line happen to fall in between the pixel times, no way will you be able to see much more than a gray blur, no matter what the beam current is doing. And since the pixels aren't sync'd to the dot triads, this effect WILL happen at some points on the scan line; you can't get away from it. > My VCR and Televisions have such controls -- they are called SHARPNESS > controls. I was under the distinct impression that the sharpness control was merely a bandwidth limiter / peaking control, while gamma correction is a modification of the video level -> beam current transfer function, not related to bandwidth. But whatever... it seems to me that this correction could easily be done by an outside box, working on the R,G, and B lines. For DEC video with composite sync on green you'd have to switch the correction out during the sync intervals, but sync separators are single-chip items these days... why not try it and report back? (meanwhile, if you want a 20" color monitor for your VAXstation that does justice to single-pixel fonts, junk the VRT19 and buy a NEC 6FG instead.) (And if you REALLY want sharp-edged characters in a single-pixel font, simply use a monochrome monitor. No "dot pitch" problems. It'll be lots cheaper, too. Oh, and turn the brightness down so that the pixels don't "spill over" onto each other.) > Furthermore, there are nowhere near enough front-panel (OK, you could > hide them under a cover) controls to trim things like dynamic convergence > which is really bad when you go to small characters. Another case of > oversimplification [...] Ah. I had a long conversation with someone fairly high up in NEC's customer service organization on a similar issue. I wanted NEC to sell service manuals, including adjustment procedures, esp. including convergence adjustments. Their experience is that this is a net loss for them. Not money-wise, but because most shops simply are not equipped to do the job properly -- but they attempt it anyway, leading to poor customer satisfaction, with NEC as much as with the shop. So they will only provide this information to NEC authorized service companies that have completed proper training, have the necessary equipment, etc. I won't go into all of the details, but I started that conversation firmly convinced that anyone with experience setting up tv broadcast monitors could do the job, using a handy computer as a test pattern generator. I don't think so any more. > And our problems are even worse than most because of the variable DC > magnetic field in the Control Room here. Another point for monochrome monitors - no purity problems from magnetic fields. --- Jamie Hanrahan, Kernel Mode Systems, San Diego CA drivers, internals, networks, applications, and training for VMS and Windows NT uucp 'g' protocol guru and release coordinator, VMSnet (DECUS uucp) W.G., and Chair, Programming and Internals Working Group, U.S. DECUS VMS Systems SIG Internet: jeh@cmkrnl.com (JH645) Uucp: uunet!cmkrnl!jeh CIS: 74140,2055 ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.os.vms,comp.sys.dec,vmsnet.misc,comp.periphs Path: cs.utk.edu!darwin.sura.net!spool.mu.edu!sol.ctr.columbia.edu!destroyer !nntp.cs.ubc.ca!cs.ubc.ca!unixg.ubc.ca!erich.triumf.ca!music From: music@erich.triumf.ca (FRED W. BACH) Subject: Re: Need VT-220 type terminal for 132 column use Date: 29 Aug 1993 15:02 PST Organization: TRIUMF: Tri-University Meson Facility Lines: 109 Distribution: world Message-ID: <29AUG199315025683@erich.triumf.ca> References: <1993Aug25.100736.30@flying-disk.com> <28AUG199318033504@erich.triumf.ca> <1993Aug29.040921.2621@cmkrnl.com> NNTP-Posting-Host: erich.triumf.ca News-Software: VAX/VMS VNEWS 1.41 Xref: cs.utk.edu comp.os.vms:71601 comp.sys.dec:17991 vmsnet.misc:2056 comp.periphs:6119 In article <1993Aug29.040921.2621@cmkrnl.com>, jeh@cmkrnl.com writes... # #> My VCR and Televisions have such controls -- they are called SHARPNESS #> controls. # #I was under the distinct impression that the sharpness control was merely a #bandwidth limiter / peaking control, while gamma correction is a modification #of the video level-->beam current transfer function, not related to bandwidth. Yes, I knew this at the time. Gamma correction is used to bring out the grey scale of some object on the screen or some part of the screen. However, in the analog world the effect is the same. Note that I said high-frequency gamma correction. The sharpness control selectively amplifies the contrast (which effects the output of the video-level -> beam current transfer function by selectively modifying the video level) of small items and edges on the screen. The sharpness control effectively modifies the contrast range of something other than the whole screen. The IF amplifier/video detector are likely controlled by the TV's sharpness control, but the effect is the same as if it were put into the Video Amplifier. One does not have to think of gamma correction as being limited to the whole screen. It does not. It can be applied to part of the screen. The sharpness control achieves this dynamically, based on signal rather than screen position. So it's a little bit of a matter of semantics, I guess. Anyway, I'm not sure I fully understand the problems of the triad of dots and the pixels at this time. But what you did make clear is that the designers of new monitors did NOT take care to emulate effectively the monitors that their new ones replace. Perhaps they should have gone into the field and had a look at what people really wanted and really used. The 132-character screens are quite common. How come those designers never come and find me? I'n not hiding. #But whatever... it seems to me that this correction could easily be done by an #outside box, working on the R,G, and B lines. For DEC video with composite #sync on green you'd have to switch the correction out during the sync #intervals, but sync separators are single-chip items these days...why not try #it and report back? Does anybody have a cct design that I could pass on to my Hardware boys???? I would appreciate it immensely. #(meanwhile, if you want a 20" color monitor for your VAXstation that does #justice to single-pixel fonts, junk the VRT19 and buy a NEC 6FG instead.) Someone here made the decision that the Control Room would be an all-DEC shop. Too bad. The Data Analysis Center here has some NEC's. #(And if you REALLY want sharp-edged characters in a single-pixel font, simply #use a monochrome monitor. No "dot pitch" problems. It'll be lots cheaper, #too. Oh, and turn the brightness down so that the pixels don't "spill over" #onto each other.) Yup. I am constantly at the contrast and brightness knobs. #> Furthermore, there are nowhere near enough front-panel (OK, you could #> hide them under a cover) controls to trim things like dynamic convergence #> which is really bad when you go to small characters. Another case of #> oversimplification [...] # #Ah. I had a long conversation with someone fairly high up in NEC's customer #service organization on a similar issue. I wanted NEC to sell service manuals, #including adjustment procedures, esp. including convergence adjustments. Their #experience is that this is a net loss for them. Not money-wise, but because #most shops simply are not equipped to do the job properly -- but they attempt #it anyway, leading to poor customer satisfaction, with NEC as much as with the #shop. So they will only provide this information to NEC authorized service #companies that have completed proper training, have the necessary equipment, #etc. I won't go into all of the details, but I started that conversation #firmly convinced that anyone with experience setting up tv broadcast monitors #could do the job, using a handy computer as a test pattern generator. I don't #think so any more. # With training and some equipment, I think I could. I run a cyclotron, the world's LARGEST cyclotron. I can tune a monitor. If they can do it, I can do it. I bet I could do it better than they could since I would have the time to dicker around more than they would. I have a reputation as a real fusspot. I used to do dynamic conversion on Color CRT's 25 years ago. The physics hasn't changed although the electronics may have changed. In fact, I was the first one to get a color CRT going in our 5-to-50 gauss Control Room. (SEE BELOW) #> And our problems are even worse than most because of the variable DC #> magnetic field in the Control Room here. # #Another point for monochrome monitors - no purity problems from magnetic #fields. Indeed. I still use the (green-screen) Dasher D400 for 132-character Fault Report records. (Tilt *IS* a problem-- about 20 degrees off so we often rotate the deflection yokes on the crt's.) The degaussing coil is standard issue here. So are a number of tiny little ceramic magnets. Just protect your floppy disks, I always tell the operators. # --- Jamie Hanrahan, Kernel Mode Systems, San Diego CA Fred W. Bach , Operations Group | Internet: music@erich.triumf.ca TRIUMF (TRI-University Meson Facility) | Voice: 604-222-1047 loc 327/278 4004 WESBROOK MALL, UBC CAMPUS | FAX: 604-222-1074 University of British Columbia, Vancouver, B.C., CANADA V6T 2A3 These are my opinions, which should ONLY make you read, think, and question. They do NOT necessarily reflect the views of my employer or fellow workers. ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.sys.pc-clone.micron Path: cs.utk.edu!stc06.CTD.ORNL.GOV!news.ssc.gov!fnnews.fnal.gov!uwm.edu !spool.mu.edu!agate!agate!bilmes From: bilmes@burrito.icsi.berkeley.edu (Jeff Bilmes) Subject: Re: Difference between Nokia monitors? Date: 28 Jan 1995 11:06:34 GMT Organization: ICSI/U.C. Berkeley Lines: 50 Distribution: usa Message-ID: References: <3gbsnk$le9@matlock.mindspring.com> NNTP-Posting-Host: burrito.icsi.berkeley.edu In-reply-to: holschuh@mindspring.com's message of 27 Jan 1995 22:39:48 GMT >>>>> "Douglas" == Douglas Holschuh writes: > I was informed today be one of Micron's reps that the 17 > in. high-end Nokia monitor that you can get (for $650 above the > 15 in. ADI) is a Nokia 477E. Does anyone know what the > difference is between the 477E that Micron sells and the 477X > that wins all the awards? More importantly, if you have one, do > you love it? There are 3 Nokia monitors people seem to get confused about. 447L: The low end Nokia 17", this is the one that costs around $6-700, .28mm dot pitch, 1280x1024 at 60Hz max, etc. 447X: This is the monitor you've all hearing good things about, and costs about $1000. .25mm pitch, 1280x1024 at 75Hz, etc. 447E: This is an OEM monitor that Nokia makes exclusively for Micron. It is the same as a 447X in every way *except* for the following: 1) Micron sells it for about $950.00 2) It doesn't include a couple of minor video controls 3) the video controls have front pannel buttons/pots/etc. rather than an on-screen menu. I don't know if the 447E video parameters are micro-processor controlled or not (like the 447X), no-one so far has been able to tell me, not even Nokia. I got this information after several phone calls to Nokia tech support who'll be glad to fax you the tech sheets of each. Micron tech support has been completely useless (on more than one issue). I had a 447E on order, but because of the confusion, I cancelled the 447E and ordered a 447X through Computability for $979. The only problem, however, is that the monitor arrived in 3 days and I've been waiting 3.5 weeks already for the computer. -- Jeff -- ---------------------------------------------------------- Jeff A. Bilmes Computer Science Division International Computer Science Institute Dept. of EECS 1947 Center St. Suite 600 U.C. Berkeley Berkeley CA, 94704-1198 Berkeley CA, 94720 FAX: +1 510 642 6865 ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec.micro,comp.sys.dec,comp.sys.dec.hardware Path: cs.utk.edu!stc06.CTD.ORNL.GOV!fnnews.fnal.gov!mp.cs.niu.edu !vixen.cso.uiuc.edu!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu !zip.eecs.umich.edu!panix!not-for-mail From: rbi@panix.com (Ray Bengen) Subject: Re: Macintosh 6100/60 and DEC monitor Followup-To: comp.sys.dec.micro,comp.sys.dec,comp.sys.dec.hardware Date: 6 Feb 1995 20:33:17 -0500 Organization: PANIX Public Access Internet and Unix, NYC Lines: 34 Message-ID: <3h6ikt$da@panix2.panix.com> References: NNTP-Posting-Host: panix2.panix.com X-Newsreader: TIN [version 1.2 PL2] Xref: cs.utk.edu comp.sys.dec.micro:4628 comp.sys.dec:29937 Mark Friedman (bobo@avogadro.arc.nasa.gov) wrote: : I'm interested in buying a Macintosh 6100/60 and I have a 19" monitor : (made by DEC, but I think it's a Sony) that I have been using with a : PC (also made by DEC). I don't know the monitor's model number : off-hand. The PC is a Decstation 433pc. : My first question is: what will likely take to get this monitor to : work with the power mac? I assume that I will at least need a new : cable or cable adapter. : Secondly, I hear that the 6100/60 doesn't support resolutions above : 832x624 at 8 bits. My monitor can support up to (at least) : 1024x768. Are there video cards available for the 6100/60 which would : be likely to work with my monitor and would support higher : resolutions? How much do these cards cost? I'm trying to do something similiar with a MAC and a VRT19-DA which by the way is made by by Sony as a GDM-1960. An outfit in San Jose called Enhance Cable Technology sells a box called a liberty adapter which maade do the job for you. 800 343 2425 let me know how it works out. Ray -- Voice: (212) 228-4600 Fax: (212) 228-4668 Res: (212) 627-2525 EMail: Net> rbi@panix.com CIS> 76146,2355 AO> RayBengen ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.comp.hardware.homebuilt Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!psuvax1 !news.ecn.bgu.edu!news.moneng.mei.com!howland.reston.ans.net!cs.utexas.edu !asuvax!noao!news.Arizona.EDU!Violet.CCIT.Arizona.EDU!HEMMINGS From: hemmings@Violet.CCIT.Arizona.EDU (bill hemmings) Subject: pc-jr monitor: here's how... Date: Mon, 27 Mar 1995 05:34:19 GMT Organization: University of Arizona Lines: 51 Message-ID: <0098DF52.32FC5A2E@Violet.CCIT.Arizona.EDU> Reply-To: hemmings@Violet.CCIT.Arizona.EDU NNTP-Posting-Host: violet.ccit.arizona.edu the question was raised again..... From: gbesser@lynx.dac.neu.edu (Glen Besser) Newsgroups: alt.comp.hardware.homebuilt Subject: Refurb A PC Junior Monitor I have an old Pc Junior Monitor. I am looking for the pinouts ...... okay: How to connect PcJr color monitor as CGA For anyone wanting/needing to connect a PcJr color monitor to a real computer, here's the pin-to-pin translation. I simply chopped off the 18pin rectangular plug from the monitor, and soldered the required wires into a DB-9p from Radio Shack. While these are the connections for a normal CGA, it is in fact capable of some sort of double-scan to 320x400 or something. Note also that wire colors could vary some. Check what you have before chopping the connector off if you want to avoid trouble. (#)=DB-9p pins (4) (3) green (5) red (6) | blue | orange | x x | | | | x A1 A2 A3 A4 A5 A6 A7 A8 A9 B1 B2 B3 B4 B5 B6 B7 B8 B9 | x | | x x | | brown blue large black | (8) black (1) yellow clear (9) (2) NOT USED (make sure the insulation on these leads is intact so they don't short out - there's power on some of them) gray/ purple shielded white x | x x | A1 A2 A3 A4 A5 A6 A7 A8 A9 B1 B2 B3 B4 B5 B6 B7 B8 B9 x | x x | red & gray shield shielded provided by: hemmings@ccit.arizona.edu ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.comp.hardware.homebuilt Path: cs.utk.edu!cssun.mathcs.emory.edu!hobbes.cc.uga.edu !news-feed-1.peachnet.edu!concert!bigblue.oit.unc.edu!not-for-mail From: Mark Harper Subject: How To: RGB to PC convertion Date: 11 Apr 1995 15:17:36 GMT Organization: The University of North Carolina at Chapel Hill Lines: 29 Message-ID: <3me6ig$mdo@bigblue.oit.unc.edu> NNTP-Posting-Host: ginger.med.unc.edu OK, here goes. Most workstation monitors are sync. on green. That means that the horizontal and vertical syncs are combined with and subsequently stripped from the green video signal. To combine the syncs from your average VGA/SVGA card you need to do two things (actually I have, in the past, be able to just hot wire the horiz. and vert. syncs to the green video out of the board. But, this only work with some cards and could blow up others). 1) The syncs need to be buffered. 2) The signals need to be combined without loading or sourcing one another. Start with the latter. The best way that I know to accomplish this is to combine the signals via an AND gate. You will need either 1 three input AND gate or 2 two input AND gates. Now to #1. If you supply both inputs of an AND gate with the same signal what you get is an isolation buffer. Hey, I'll use a quad AND gate; two gate to buffer the syncs and two gates to combine the signals. I can also derive the supply voltage by putting a full wave bridge on the horiz. sync line. After it gets filtered, I'll bet its about 5V DC. Note: use good LS TTLs. Good luck. Mark Harper PS You'll still need to open the monitor to set the Horizontal freq. and Horizontal phase. Most newer video boards will come close to the original sync freq.s and phases via VESA modes, but not exactly. These monitors are not multi-freq monitors. They will not sweep to "find" the sync freq.s that they are sent. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals Path: cs.utk.edu!cssun.mathcs.emory.edu!hobbes.cc.uga.edu !news-feed-1.peachnet.edu!gatech!howland.reston.ans.net !news.sprintlink.net!psgrain!news.tek.com!sptekwv2!boots From: boots@sptekwv2.wv.tek.com (Darrell Irvin;685-2277;60-850;;sptekwv2) Subject: Re: Hey! My terminal is wiggling! Date: 4 May 1995 20:41:12 GMT Organization: Tektronix, Inc., Beaverton, OR Lines: 34 Distribution: world Message-ID: <3obe58$lko@goodnews.wv.tek.com> References: <3o2q8eINNqav@duncan.cs.utk.edu> Reply-To: boots@orca.wv.tek.com NNTP-Posting-Host: sptekwv2.wv.tek.com Keywords: Help, electromagnetic, interference In article <3o2q8eINNqav@duncan.cs.utk.edu>, shuford@cs.utk.edu (Richard Shuford) writes: |> |> Before you try exotic methods of reducing the electromagnetic-field- |> induced wiggle on your screen, see if this simple method will work. |> |> Obtain a sheet of copper metal approximately 1 meter square. Craft |> stores often carry copper sheet. You may need to stiffen it by gluing |> sticks of wood or whatever over it. Tape over any sharp edges. |> |> Then juxtapose this copper shield between your screen and the |> interference source. |> |> It might help. Your mileage may vary. |> As a design engineer for a terminal manufacturer for 18 years I will state that your interference is highly likely to be magnetic. Probably from a distribution transformer or possibly from wiring carrying high currents close to the PC on the other side of the wall. This kind of interference is almost impossible to shield (the copper will have no effect). You may be able to reduce or eliminate the wiggle by turning the PC 90 degrees. If this fails you have only one option, separate the terminal from the magnitic source by either moving the PC or the transformer/wiring (probably not economic!). -- ========================================================= = Darrell Boots Irvin boots@orca.WV.TEK.COM = = Network Displays Engineering = = Tektronix Inc. = ========================================================= ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals Path: cs.utk.edu!cssun.mathcs.emory.edu!emory!gatech!howland.reston.ans.net !xlink.net!xlink100!ka.sub.net!rz.uni-karlsruhe.de!news.uni-stuttgart.de !news.belwue.de!news.belwue.de!scsing.switch.ch!svuse.ubs.com !svnews.ubs.com!svusenet.ubs.ch!news Message-ID: <1995May5.124540.17007@zh014.ubs.ubs.ch> Sender: news@svusenet.ubs.ch Nntp-Posting-Host: svusenet.ubs.ch Organization: Union Bank of Switzerland (Zuerich) X-Newsreader: TIN [version 1.1 PL6] References: <3obe58$lko@goodnews.wv.tek.com> Date: Fri, 5 May 1995 12:45:40 GMT From: zhwty@svusenet.ubs.ch Subject: Re: Hey! My terminal is wiggling! Darrell Irvin;685-2277;60-850;;sptekwv2 (boots@sptekwv2.wv.tek.com) wrote: : In article <3o2q8eINNqav@duncan.cs.utk.edu>, : shuford@cs.utk.edu (Richard Shuford) writes: : |> : |> Before you try exotic methods of reducing the electromagnetic-field- : |> induced wiggle on your screen, see if this simple method will work. : |> : |> Obtain a sheet of copper metal approximately 1 meter square. Craft : |> stores often carry copper sheet. You may need to stiffen it by gluing : |> sticks of wood or whatever over it. Tape over any sharp edges. : ...... : As a design engineer for a terminal manufacturer for 18 years I will state : that your interference is highly likely to be magnetic. Probably from : a distribution transformer or possibly from wiring carrying high currents : close to the PC on the other side of the wall. This kind of interference : is almost impossible to shield (the copper will have no effect). You may : be able to reduce or eliminate the wiggle by turning the PC 90 degrees. : If this fails you have only one option, separate the terminal from the : magnitic source by either moving the PC or the transformer/wiring (probably : not economic!). We had that magnetic interference in some of our offices, from a cable in the floor. Shielding with copper had no effect. (We still tried it, it might have worked, depending on the kind of interference). Shielding with a special iron or permaloy must be applied if the interference is magnetic. We bought iron shields. (Expensive! 2000 $ per shield). It works. Only large screens (19 Sony monitors) were seriously affected. In smaller monitors, the electrons have a shorter distance to travel, and suffer less deviation. Trying Richard's idea first could be a good idea, because it is relatively cheap, so if it does not work, little is lost. If it does not help, however, Darrell is right: almost impossible (aka very expensive) to shield. Martin.Wyser@ubs.ch ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.os.vms Path: cs.utk.edu!nntp.memphis.edu!nntp.msstate.edu!gatech!news.mathworks.com !mvb.saic.com!info-vax Subject: Re: GIGI terminals Message-ID: From: mike_st@iah.com (Mike Stubblefield) Date: Thu, 1 Jun 1995 21:35:02 -0400 Organization: Info-Vax<==>Comp.Os.Vms Gateway Lines: 65 >In article you wrote: >> That last statement is not completely accurate. yes, on its own the VT125 >> was monocrome. However it came equipped with three BNC RGB connectors >> that could be plugged into a standard BARCO or equivalent monitor to >> display colour without any extra VT125 hardware. > >Does anyone know anything about the Barco's? All this talk about GIGIs >reminded me that we have about eight in the basement. Six are regular >Monochrome, but two have those Barco CD-33 monitors you spoke of. Problem is, >I have no idea how to use the Barco -- there are eight video connectors on the >back, without much in the day of labels to indicate what it what. Plus there >are several switches with "75" on one side, and nothing or "X" on the other. > >Does anyone have a manual for those Barcos, or do know who makes them or who I >might contact? I'm wondering, for example, whether the monitor could be used >with any of our other color-video-generating systems. > >Thanks for any help. > >-- John W. Manly (System Manager -- Amherst College) Generally there are four sets of BNC connectors on the back of RGB monitors Obviously three are for Red Green and Blue signals, one is for external sync, but some monitors allow sync to also travel with the green channel. There are some color monitors which had horizontal and vertical drives separated but I also remember those same monitors could be switched into a more conventional mode. Your switches on the back which say 75 on one side and x on the other are termination switches. Each of those bnc inputs has a loop-through - I guess someone thought that you might want to hook more than one monitor to the same output. When you are using only one monitor, always have those switches in the 75 mode. This is 75 ohm termination. Some monitors will not work at all if you have the switches in the wrong position and others will look real overloaded like you have the brightness turned up too much. If you are looping RGB signals through one color monitor to another, always remember to terminate or flip the switches on the last monitor in the chain to the 75 position and leave the other monitors before that last one in the X or "non terminated" mode. If you terminate an input twice, the video levels will look real muddy or like the CRT is defective. Finally, make sure the monitor has the right scan rate to support whatever you are putting it on. If it does not, you can blow up the monitor or the video graphics board or both. Obviously a multi-scan monitor will guarantee that you have the right scan rate to support the graphics mode on that display adapter. <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> Internet Access Houston, Inc P.O. Box 980845 713/526-3425 713/522-5115 FAX HTTP://wotan.iah.com INTERNET ACCESS HOUSTON (IAH.COM) ////////////////////////////////////////////////////////////////////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ ++ The cable information below was obtained from the ++ DEC Rainbow Computer archive at the Swedish anonymous-FTP site ++ "ftp.update.uu.se". ++ Look in the directory "pub/rainbow/doc" ++ ++ >>>> ftp://ftp.update.uu.se/pub/rainbow/doc/vr201rep >The VR-201 monochrome monitor on my Rainbow just shuffled off this >mortal coil and I need another. Any spares for sale out there? Any >ideas on a cheap way to replace it? Please e-mail responses to the >address below. Thanks! If you can handle a soldering iron and a meter, then you can do a quick hack like this (totally unaproved of by DEC of course). Start off with a 15-pin D connector of the right gender to fit the monitor end of the cable (I think you need a plug), and a 4-pin RJ11 (I think) to take the keyboard cable. Now : link pins 7 and 8 on the 15 pin D (+12V out) link pins 4,5,6,13 on the 15 pin D (ground) Looking into the face of the RJ11, with the pins towards you, number the leftmost pin 1. Now link as follows: RJ11 pin 1 to pin 14 of the D RJ11 pin 2 to +12V RJ11 pin 3 to Ground RJ11 pin 4 to pin 15 of the D You should check those connections between the D connector and the RJ11 on your existing VR201, in case I've noted them down wrongly Now you need to find a composite mono monitor, capable of handling the USA NTSC TV scan frequencies. Such monitors are relatively common, but are not used with PCs (except as a mono monitor on a CGA card I guess). Now find a video lead to fit the monitor input, connect it's sheild to ground on the 15 pin D plug, and the inner to pin 12. Plug everything in, and it should work. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!lll-winken.llnl.gov !uop!pacbell.com!tandem!nntp-hub2.barrnet.net!news1.digital.com !pa.dec.com!nntpd.lkg.dec.com!jac.zko.dec.com!quark.enet.dec.com!LIONEL From: lionel@quark.enet.dec.com (Steve Lionel) Subject: Re: VRC21-Hx Monitor Question Date: 2 Jun 1995 12:55:27 GMT Organization: Digital Equipment Corporation - Nashua, NH Lines: 14 Message-ID: <3qn1nv$8jf@jac.zko.dec.com> References: <3ql0st$ihu@rcp6.elan.af.mil> Reply-To: lionel@quark.enet.dec.com NNTP-Posting-Host: quark.zko.dec.com In article <3ql0st$ihu@rcp6.elan.af.mil>, Don Melano writes: >Is there anyway to turn off the "Monitor Power Management System" on >a VRC21-Hx Multi-Scanning Digital Control Color Monitor? There's a switch on the back, as mentioned in the fine manual. Steve Lionel Mail: lionel@quark.enet.dec.com DEC Fortran Development WWW: http://www.digital.com/info/slionel.html Digital Equipment Corporation CompuServe: 75263,3001 110 Spit Brook Road, ZKO2-3/N30 Nashua, NH 03062-2698 "Free advice is worth every cent" For a summary of Digital's Internet services, send mail to info@digital.com [2004: probably a stale piece of advice now] ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Path: cs.utk.edu!cssun.mathcs.emory.edu!emory!gatech!howland.reston.ans.net !dish.news.pipex.net!pipex!news.mathworks.com!uunet!in1.uu.net!pgh!powell Message-ID: References: <3tjril$p3c@topaz.sensor.com> Organization: Nauticom - Internet Access Provider X-Newsreader: TIN [version 1.2 PL2] Date: Mon, 10 Jul 1995 19:38:56 GMT From: powell@pgh.nauticom.net (Reed Powell) Subject: Re: vrc-16 monitor for PCs (windows, linux, etc)? Well, there is finally some good news, I think, for all those people out there with old fixed frequency large screen monitors, left over from workstations (VAX or DEC), and who want to use them on a PC. This has always been a problem because of the fixed frequency aspect. DEC used to sell an ISA board for $2000 but that was excessive. Send email to Emil Darmo at Mirage (mirage@lainet.com), which is a company that makes both VLB and PCI cards for handling these monitors. THey run around $400 ea and have a 10-day money back guarantee. -reed Ron Natalie (ron@topaz.sensor.com) wrote: : Bryan Levin (blevin@netcom.com) wrote: : : Hi, : : How easy is it to connect a vrC-16 monitor (comes with a DECstation : : 5000/25) to a PC? I would like to run 1024x768; higher if possible. : : On the back, there is "r g/s b" (red; green + sync?; blue), : : along with "h/c v" (h=horizontal sync? v=vertical? What is the : : "c" in the "h/c"?) : "Composite". ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!vixen.cso.uiuc.edu !news.uoregon.edu!gatech!news.mathworks.com!uunet!in1.uu.net!pgh!powell Message-ID: References: <3tjril$p3c@topaz.sensor.com> Organization: Nauticom - Internet Access Provider X-Newsreader: TIN [version 1.2 PL2] Date: Mon, 10 Jul 1995 19:44:57 GMT From: powell@pgh.nauticom.net (Reed Powell) Subject: Re: vrc-16 monitor for PCs (windows, linux, etc)? Ron Natalie (ron@topaz.sensor.com) wrote: : Bryan Levin (blevin@netcom.com) wrote: : : Hi, : : How easy is it to connect a vrC-16 monitor (comes with a DECstation : : 5000/25) to a PC? I would like to run 1024x768; higher if possible. : : On the back, there is "r g/s b" (red; green + sync?; blue), : : along with "h/c v" (h=horizontal sync? v=vertical? What is the : : "c" in the "h/c"?) : Composite. I reread your note. I didn't notice that you had specified a VRC16. That is NOT a fixed frequency monitor. It will run on a VGA or SVGA card just fine. -- reed ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Path: cs.utk.edu!gatech!news.mathworks.com!uunet!in1.uu.net!news1.digital.com !pa.dec.com!depot.mro.dec.com!nntpd.lkg.dec.com!peavax.eng.pko.dec.com!usenet From: Frank David Hering Subject: Re: vrc-16 monitor for PCs (windows, linux, etc)? Date: 10 Jul 1995 20:35:52 GMT Organization: Digital Equipment Corporation -- Maynard, MA Lines: 31 Message-ID: <3ts2v8$1if@peavax.eng.pko.dec.com> References: A VRC16 can be used on a PC with no problem. The monitor is multisyncing and can accept the following resolutions and refresh rates: --------------------------------------------------------------------------------------- |VGA |COMP |COMP |ERGO |8514A|SVGA |ERGO |1K |ERGO |WS STD|WS STD|WS STD| | | |VGA |STD | |1K |VGA |SVGA |(DEC) |(DEC) |(DEC) |(DEC) | --------------------------------------------------------------------------------------- MODE # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | --------------------------------------------------------------------------------------- |640 X |640 X|640 X|640 X|1024X|800 X|1024X |1024X|800 X |1280X |1024X |1280x | RESOLU- |480 |(720)|(720)|480 |768 |600 |768 |768 |600 |1024 |768 |1024 | TION | | 350 |400 | | | | | | | | | | | NI | NI | NI | NI | I | NI | NI | NI | NI | NI | NI | NI | --------------------------------------------------------------------------------------- REFRESH |59.94 |70.09|70.09|72.15|86.64|56.16|70.07 |59.70|72.11 |66.51 |72.033|72.556| RATE(HZ)| | | | | | | | | | | | | --------------------------------------------------------------------------------------- This is for the -ha version, the -da does not support mode 12 I would suggest that you just buy the cable from your PC to the monitor from any computer store. This is typically a stock item. The monitor is marked RGBHV at the BNC port. The way you described it is just fine. As for a VRT16, this is a little harder. This monitor does mode 12 only and it assumes that you have sync on green. Most PC card do not do this. I would carefully check your Graphics card before you bought one of these. ////////////////////////////////////////////////////////////////////////////// Newsgroups: sci.electronics.repair Path: cs.utk.edu!gatech!news.mathworks.com!tank.news.pipex.net!pipex !howland.reston.ans.net!torn!nott!bcarh189.bnr.ca!bcrkh13.bnr.ca!bcollins From: bcollins@bnr.ca (Brian [B.] Collins @2M14 [BNR]) Subject: Re: >VGA to TV converter? Date: 25 Sep 1995 18:26:50 GMT Organization: Northern Telecom Wireless Development Center, Calgary Lines: 27 Distribution: world Message-ID: <446s9a$q5k@bcrkh13.bnr.ca> References: <440thd$eug@hippo.shef.ac.uk> NNTP-Posting-Host: nwdch018.bnr.ca Keywords: VGA TV converter Originator: bcollins@nwdch018 For those looking for a VGA-TV converter there is one in the Oct 1991 issue of Radio-Electronics magazine. The article name is "PC-To-TV Converter". Gernsback Publications, Inc. 500-B Bi-County Boulevard, Farmingdale, NY. USA 11735 The article describes how to build a unit that plugs into a VGA card and outputs NTSC video in addition to a pass-through port for VGA. The parts list shows that a complete kit including PC board, D-connectors, mounting hardware, all parts and converter software package - US$164. From: Video Control, 3314 "H" St., Vancouver, WA USA 98663 Tel: (206) 693-3834 -- Brian Collins |In a war of ignorance |The opinions expressed here are PCB Designer |no one wins. |the result of my own Nortel Calgary AB|There is no concept of "race"|m i s c o n c e p t i o n s , Wireless Networks|we are all humans. |not those of my employer. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Path: cs.utk.edu!nntp.memphis.edu!nntp.msstate.edu!emory!swrinde !ringer.cs.utsa.edu!news.cais.net!news1.radix.net!news Subject: Re: DEC VR290 Monitor Repair Info Needed Message-ID: <447tdm$s46@news1.radix.net> From: "John R. Lloyd" Date: 26 Sep 1995 03:52:22 GMT References: NNTP-Posting-Host: dialin10.annex1.radix.net ars@cadence.com (Art Spaziano) wrote: > > Does anyone know where I can get a service manual and parts for a >VR290 monitor? > > As an alternative, I would settle for any information that would tell >me how to use a "conventional" monitor with a DecStation 3100. We use ViewSonic monitors as replacements for VR290 on DecStation 3100. The ViewSonic monitors have BNC connections and the ability to sync on green. Regards, John Lloyd ////////////////////////////////////////////////////////////////////////////// Newsgroups: sci.electronics.repair Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!usenet.eel.ufl.edu !tank.news.pipex.net!pipex!news.sprintlink.net!malgudi.oar.net!picker !central.picker.com!sam From: sam@colossus (Sam Goldwasser) Subject: Re: NEC MultiSync 3D user setup info needed In-Reply-To: xopher@ptd.net's message of Sun, 1 Oct 1995 01:45:37 GMT Message-ID: Sender: news@picker.com Nntp-Posting-Host: 144.54.160.15 Organization: Picker International, Inc. References: Date: Sun, 1 Oct 1995 20:45:54 GMT Lines: 30 In article xopher@ptd.net (xopher) writes: > On the NEC MultiSync 3D, how are the MODE, COLOR, and MEMORY RECALL > buttons used? It appears to be one of the first monitors with digital > controls for H/V positioning. From the manual - don't ask me exactly what these do as I have exclusively used these monitors for VGA/SVGA analog video. Mode: Mode Input Off TTL General Color Mode (CGA, EGA) Off Analog General Analog Mode (VGA, PGC, etc.) On TTL Mono mode (MDA) On Analog User Programmable Memory area Color (TTL modes only): Auto CGA, EGA, or compatible 8 8 colors 16 16 colors with IBM brown! 64 64 colors Memory Reset: Initializes to factory defaults. -- sam ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec,sci.electronics Path: cs.utk.edu!nntp.memphis.edu!nntp.msstate.edu!emory!sol.ctr.columbia.edu !news.uoregon.edu!news.emf.net!overload.lbl.gov!lll-winken.llnl.gov !uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net !newsfeed.internetmci.com!news.sprintlink.net!in2.uu.net!topaz.sensor.com !topaz.sensor.com!ron Subject: Re: VR16 monitor on an Alpha (RGB/SyncGreen monitor to DEC SVGA-like card) Message-ID: <460h4k$cm@topaz.sensor.com> From: ron@topaz.sensor.com (Ron Natalie) Date: 17 Oct 1995 15:12:20 GMT References: Organization: Sensor Systems Lines: 25 Przemek Klosowski (przemek@rrdjazz.nist.gov) wrote: : When I was compiling the order for a new Alphastation, I was told : that an old monitor (VR-16) that I have will work with it. It made : sense, since it was specified for the same pixel size that the : TGA graphics board on the Alpha uses (1152x900, if I can remember). : Unfortunately, I found out that Alphas use the VGA connector, : presumably with separate sync signals, while my monitor has : three BNC connectors with sync on green. : Is there a way to still use the monitor with the Alpha? I am not : averse to custom-making or buying a cable. Get a cable that breaks out R, G, and B to BNC's (if it has the H and V sync lines, that's OK too, just leave them dangling). Go to the boot prompt, this will be fun when you can't see what your typing and type: set tga_sync_green 1 then type "init". The video will then appear on the monitor. You might want to borrow some monitor with seperate sync to do the setup. -Ron ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.sys.pdp8 Path: stc06.ctd.ornl.gov!news.er.usgs.gov!news1.radix.net!news.cais.net !news.mathworks.com!howland.erols.net!newsxfer2.itd.umich.edu !news.eecs.umich.edu!news.flint.umich.edu!news.gmi.edu!msunews !msupa.pa.msu.edu!EDMUNDS Organization: MSU Dept. of Physics & Astronomy Message-ID: <54gri9$bje@msunews.cl.msu.edu> Date: 21 Oct 1996 21:56:25 GMT From: edmunds@pa.msu.edu (Daniel Edmunds, MSU Physics Department) Subject: VR14 Inputs The VR14 displays that I'm familiar with were part of the VC8-E Point Plot Display on PDP8/E computers. The VR14 was controlled by a M869 module on the OmniBus. In normal use the beam spot was moved to proper X-Y coordinates with the "beam off" and then momentarily "intensified" to make the spot visible. Once the beam was "off" again it would be moved to the next X-Y pair and the process repeated. In this way you could loop through about 1000 X-Y pairs fast enough to form an image without to much flicker. The BNC connectors labeled Z Input and Z Select are both TTL level and work together in the following way. A negative going TTL transition on the Z Input will generate a proper duration "unblanking" pulse within the VR14 provided that: a. The front panel switch is in the 1&2 position, or b. The front panel switch is in the 1 position and Z Select is TTL HI, or c. The front panel switch is in the 2 position and Z Select is TTL LOW. The duration of the "unblanking" pulse generated within the VR14 is about 300 nsec. This pulse drives the CRT cathode from +60V to ground to allow beam current to flow for about 300 nsec. I believe that the Z Select may have been used to alow one controller to drive a number of VR14 displays. In the application that I know about nothing was connected to the Z Select input and the front panel switch was left in the 1&2 position. The Z Direct input is AC coupled to the CRT grid. To unblank the beam the specification is a positive going pulse not exceeding 65 Volts but at lease 45 Volts for a duration of at least 1 usec but not exceeding 10 usec. The Z Direct input was not used in any applications that I know about. The X and Y inputs have a sensitivity of 0.5 Volt causes 1 inch of deflection. Settling time for a small move is 1 usec and for a full screen move it is 18 usec. The M869 module used 10 bit DAC's to drive the VR14 X-Y Inputs. In the "Small Computer Handbook" the VR14 is mentioned in the chapter on Internal I/O Options in the section about CRT Displays. The listing of the Kaleidoscope program in this section is interesting. ////////////////////////////////////////////////////////////////////////////// Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!math.ohio-state.edu !howland.reston.ans.net!newsfeed.internetmci.com!swrinde !elroy.jpl.nasa.gov!usc!news.cerf.net!news.lainet.com!usenet From: mirage@lainet.com (Emil Darmo) Newsgroups: comp.sys.hp.hardware Subject: Re: HP Monitors with a PC SVGA Card Date: 5 Jan 1996 22:10:56 GMT Organization: MIRAGE (310) 301-4545 Lines: 54 Message-ID: <4ck7lg$8bu@lainet2.lainet.com> NNTP-Posting-Host: a1p12r.lainet.com Mime-Version: 1.0 In article <4ch9ef$hpv@bmerhc5e.bnr.ca>, mtierney@bnr.ca says... > >Is it possible to get HP RGB (Sync on Green) monitors to work with a SVGA >card on a PC. I heard that there was a cable converter or something similar >to make it possible. > >The specific HP models I am interested in are the C2746A/C2094A or the A4033A. >If it is possible, what kind of cost are we talking about? The HP monitors which you have are called fixed frequency "as oppose to multi frequncy/multisync" monitors. I've heard of many gadgets that supposingly have been designed by individuals on the net that might help you with one or the other aspect of the problem which you are facing, but since most these gadgets offer very limited help with getting a fixed frequency monitor to behave as a PC compatible unit, in a little while you most likely will end-up searching for a better solution. After all, for how long you can live with "blind-booting" or not being able to switch to other resolutins,........ etc. A PC monitor, should have multi-resolution capability and be compatible with all PC modes and resolutions. A gadget or a software trick can not provied such compatibility and in its best, it might allow you to use your fixed-scan monitor in one resolution only with no change-mode capablity at all. That is if you can find a video card that can support 70+ Khz output signal which is essential to run your HP C2094A monitor. However, there is an alternative to all these hassles and problems: A video card which has been designed to run a fixed frequency monitor in a multi resolution DOS/WIN/OS2/Linux/CAD compatible environment. Is this an expensive solution? Not at all. Considering all the time you save looking for a solution and spending money on practically useless gadgets and the price comparison between a new 20" monitor and the fact that you already have a large screen monitor, the cost of a fixed scan video card is very reasonable. For more information on how you can use your HP monitor on a PC check the MIRAGE at the following URL: old--[ http://www.lainet.com/mirage/hp.htm ] http://www.mirage-mmc.com/core.html or send an e-mail to: mirage@lainet.com ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.hp.hardware Path: cs.utk.edu!cssun.mathcs.emory.edu!gatech!newsfeed.internetmci.com !vixen.cso.uiuc.edu!howland.reston.ans.net!news.sprintlink.net !montana.avicom.net!root From: Joe McCarthy Subject: Re: Specs for HP 98785A Monitor? Date: 12 Jan 1996 01:52:06 GMT Organization: Software Integrators Lines: 11 Message-ID: <4d4es6$jlk@montana.avicom.net> References: rol@scirocco.bbn.hp.com (Roland Heumesser) wrote: > >I'm looking for any information of the (I think) 17 inch fixed frequency >Monitor HP 98785A. Need Resolution, Frequencies, sync and so on. >Thanks for your help. >Best regards Roland The monitor wants a sync on green signal. The horz frequency is 48KHz; the vertical is 60Hz. We sell graphics cards which can drive all HP workstation monitors from a PC. Contact me for more details. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.periphs,comp.terminals,comp.misc Path: cs.utk.edu!news.msfc.nasa.gov!newsfeed.internetmci.com!in2.uu.net !hodes.com!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com !ix.netcom.com!netcom.com!kludge From: kludge@netcom.com (Scott Dorsey) Subject: Re: PINK SCREEN Message-ID: Organization: Institute for Boatanchor Studies References: <024309Z16041996@anon.penet.fi> <4l2pnl$r0f@gidora.kralizec.net.au> Date: Wed, 17 Apr 1996 14:44:15 GMT Sender: kludge@netcom5.netcom.com In article <4l2pnl$r0f@gidora.kralizec.net.au>, newhamg@godzilla.zeta.org.au (Gerard Newham) writes: > >an584014@anon.penet.fi wrote: > >: Occasionally, my screen will turn pink. There's no specific >: time when this occurs. Several months ago I had it "repaired" >: for this same problem. Obviously, it hasn't worked. >: Does anyone have any ideas re this problem? > >Sounds like one of the guns in your screen is shot, or on the way out. No, this tends to cause a slow color shift, not a periodic loss of one color. If the image is really magenta and not pink, I would suspect that the green gun is losing signal now and then. Look for cold solder joints before doing anything else but sometimes parts do become intermittent. Intermittents are the hardest problems to find, needless to say. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.admin,comp.sys.sun.hardware Path: cs.utk.edu!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!vixen.cso.uiuc.edu !howland.reston.ans.net!newsjunkie.ans.net!newsfeeds.ans.net !news.rmii.com!rainbow.rmii.com!not-for-mail From: blanche@rainbow.rmii.com (Blanche Cohen) Subject: Re: How can I hook up Sparc 5 to PC Monitor??? Date: 6 May 1996 13:14:17 -0600 Organization: Rocky Mountain Internet, Inc Lines: 14 Message-ID: <4mlj29$dqk@rainbow.rmii.com> References: RCI makes a box that connects to its Guardian controller. The APSSUN box is about $150, but it assumes you have one of their controllers (used to connect multiple PCs, Suns and/or Macs to a single keyboard and monitor). Otherwise you're pretty much out of luck because the SUN frame buffer is somewhat different than a VGA/SVA/RGB box. But -- the pinouts have to be around someplace....you could make your own. -- "Time for a less subtle approach" [DS9] "Chocolate is a serious business" [TNG] "Worst case of testosterone poisoning I've seen" [B5] ////////////////////////////////////////////////////////////////////////////// Communications Specialties, Inc. 89-AA Cabot Court Hauppauge, NY 11788 USA voice: +1 516/273-0404 WATS: 1-888/432-9669 fax responder: +1 516/273-1710 fax queries: +1 516/273-1638 email: World Wide Web: http://www.commspecial.com/ ...makes a multiplexer to connect multiple 13W3 monitors to a Sun or Silicon Graphics computer, as well as other video products, such as scan converters. (1997-08-21) ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.hardware Path: Path: utkcs2!stc06.ctd.ornl.gov!fnnews.fnal.gov!uwm.edu!cs.utexas.edu!howland.reston.ans.net! ixnews1.ix.netcom.com!netcom.com!viable From: viable@netcom.com (Greg Hudak) Subject: Re: Sun/Hitachi 19" monitor troubles. Message-ID: Organization: NETCOM On-line Communication Services (408 261-4700 guest) X-Newsreader: TIN [version 1.2 PL1] References: <4sc2u3$mlg@stealth.eng.pyramid.com> Date: Mon, 15 Jul 1996 14:54:47 GMT Lines: 35 Sender: viable@netcom23.netcom.com Mark Wedel (mwedel@stealth.eng.pyramid.com) wrote: : I have a sun (540-1094-01)/Hitach (4619 I believe) monitor that is giving : me occasional problems. : Every couple of hours, the monitor blacks out for a few seconds, as if : it lost power. Then it works fine for a few hours more before it happens : again. : I've already taken the effort to clear out all the loose dust that : accumulates on the inside - didn't help any. : Any ideas of a cause? I am not all that knowledge of monitors, but have : some knowledge of electronics, so if it is something like replacing : a capacitor, that is no problem. Look at the top of the flyback, where it screws to the metal mount; look for a microcrack in the plastic around the mount screwhole on the flyback. If you see one, your problem is a high-voltage arc. You can also try looking for this with the bucket off in a darkened room; you may see a faint continuous stream of electrons making the jump. If you do have an HV arc problem, it will only get worse until the fly destroys itself. This was a common problem in the 4619; Hitachi used to make a silicone 'boot' which form-fitted around this section of the fly. The fly, if still available, is painfully expensive. - Greg Hudak (viable@netcom.com) |> The fly, if still available, is painfully expensive. you might try Computer Component Source (Long Island, NY). They have pretty reasonable prices on flybacks, should you need one. 800-356-1227 toll-free voice 516-496-8780 reg voice -- Doug Rorem University of Illinois at Chicago (312)-996-5439 [voice] EECS Department RM 1120 (312)-413-1065 [fax] 851 S. Morgan Street (708)-996-2226 [pager] Chicago, IL 60607-7053 rorem@uic.edu ////////////////////////////////////////////////////////////////////////////// Message-ID: <200407311753.i6VHrRXO013845@tigger.net-kitchen.com> X-Date: Sat, 31 Jul 2004 12:53:27 -0500 (EST) X-Subject: Suns-at-Home digest, Vol 1 #278 - 14 msgs Date: Sun, 11 Jul 2004 22:06:01 +0200 From: Gerrit Heitsch Subject: Re: [Suns-at-Home] Faster frame-buffer scrolling? Rob Vella wrote: > > I just acquired a Sun Ultra 5 and remember something back when I used my > SparcClassic that there was a trick to speed up the scroll rate of the frame > buffer. I don't know if this is possible, so if anyone knows, fill me in. You don't really need that trick on a U5 anymore; it's fast enough, even on the console. What's more useful is the OBP trick to set the resolution and framerate for the console: setenv output-device screen:r1024x768x75 sets it to 1024 x 768 in 75 Hz. IMHO more useful than the default 60 Hz... You cannot use just any combination though; the ATI chip has to support it. :) Gerrit ////////////////////////////////////////////////////////////////////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ Newsgroups: comp.sys.ibm.pc.hardware.video Path: cs.utk.edu!gatech!news.mathworks.com!newsfeed.internetmci.com !news.intersurf.net!multiverse!199.218.112.132!sam Message-ID: References: <4vd8r1$h80@dfw-ixnews4.ix.netcom.com> Organization: Multiverse NNTP-Posting-Host: 144.54.160.15 In-reply-to: dbspence@ix.netcom.com's message of 20 Aug 1996 20:57:05 GMT Date: 21 Aug 1996 14:03:50 GMT From: sam@stdavids.picker.com (Sam Goldwasser) Subject: Re: mono monitor pinout Monochrome - TTL (18.43 KHz - 720x350) 9 pin: 1 GND 6 Intensity 2 Unused 7 Video 3 Unused 8 H Sync TTL Positive 4 Unused 9 V Sync TTL Negative 5 Unused --- sam ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video Path: cs.utk.edu!news.msfc.nasa.gov!bcm.tmc.edu!cs.utexas.edu!swrinde !sdd.hp.com!col.hp.com!fc.hp.com!myers Organization: Hewlett-Packard Fort Collins Site Message-ID: <4vfohj$89j@fcnews.fc.hp.com> References: <4uqm3c$a08@freenet-news.carleton.ca> Date: 21 Aug 1996 19:37:23 GMT From: myers@fc.hp.com (Bob Myers) Subject: Re: EVC replacing VGA connectors on cards and monitors, when? Bill Nott (BNott@Bangate.compaq.com) wrote: > > This is a very good example of the classic "chicken & egg" or > "catch 22" situation.....the card mfgrs don't want to start using > it until they're sure monitors will be available, and the monitor > mfgrs don't want to start building with it until they are sure > the monitor can connect to something. > IMHO, the standoff will continue until some large company decides > to start shipping both cards (or systems) and monitors - not very > likely in today's cost sensitive economy, as the EVC is much more > costly than the present D-15 connector. I'm not as pessimistic as Bill about this (which won't surprise anyone, given that I chaired the EVC work group in VESA, but I hope I have some reasons beyond just that bias). EVC can result in a cost DECREASE for the complete system, IF the additional features it provides are needed. Using one connector and cable to communicate ALL this information to the monitor will be cheaper than using many. Personally, I think that EVC will start to take over as the industry moves to widespread support of the USB and IEEE-1394 standards; you want both of these routed to the monitor (USB at a minimum, and 1394 if you want the monitor to provide a video camera, CD-ROM drive, or other high-bandwidth device). When this happens, EVC offers a more cost-effective and more convenient means of connection. And there's NO room left on the D-15 for these functions. The other advantage of the EVC is in video bandwidth. The design of this connector makes it FAR superior to the D-15 for high-frequency video, and in fact it is nearly on a par with BNCs in this regard. As the industry moves to larger formats at higher rates, the D-15 becomes less and less acceptable. And if the customers want either of these - either improved video performance or the added features and convenience - you need to start asking for them. Bob Myers - Chairman, VESA monitor committee | myers@fc.hp.com Senior Engineer, Displays | Workstation Systems Division | For more information, try the Hewlett-Packard Co., Ft. Collins, CO | VESA web site: www.vesa.org ------------------------------------------------------------------------------ Note: The opinions expressed here are not those of my employer or VESA. ////////////////////////////////////////////////////////////////////////////// Date: 5 Feb 1997 07:05:52 GMT From: Antonio Carlini Reply-To: carlini@marvin.enet.dec.com Newsgroups: comp.sys.dec Subject: Re: Specs for VR297 needed In article <5d5jsf$5mp@winx03.informatik.uni-wuerzburg.de>, buckel@data (Bernhard Buckel) writes: |> |> I just purchased a used VR 297 fixed frequency monitor, but alas, I don't |> have the specs of this beast. Anyone out there in netland who can supply |> them to me? |> From the DECstation 5000 Model 100 Hardware Operator's Guide: 17" RGB 1024x864 0.26mm pitch sync on green horizontal freq. 54kHz vertical refresh 60Hz -- Antonio Carlini Mail: carlini@marvin.enet.dec.com DECnet-Plus for OpenVMS Engineering Digital Equipment Corporation Worton Grange, Reading, England ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Organization: Digital Equipment Corp Message-ID: <5qdgfr$8kg@usenet.pa.dec.com> References: <01bc8fce$9123aac0$6e7d8791@raymond> NNTP-Posting-Host: xdelta.zko.dec.com Date: 14 Jul 1997 15:26:51 GMT From: hoffman@xdelta.enet.dec.com (Stephen Hoff Hoffman) Subject: Re: Help Digital VR290-D3 cable needed In article <01bc8fce$9123aac0$6e7d8791@raymond>, "Raymond Huisman" writes: : : I have a digital monitor Type VR290-D3 (21") : with 3 BNC connectors on the back : : I want to connect this monitor to a windows '95 system with : a standard SVGA monitor. : I need a circuit and pin layout of a cable 3x BNC to 15p SVGA (male). : Can anybody help me ?? You need more than the pinout -- and this particular question has been asked more times than I care to count... The VR290 and the now-standard SVGA graphics controllers are NOT compatible -- you need a controller that is capable of generating synch-on-green RGB, and most are not. Without such a video controller, you need a synch converter box, and obtaining the proper controller or converter is likely going to cost you more than the VR290 is worth. (There are more capable multisynch monitors available from Digital and from other vendors -- new and used. The VR290 is an old first-generation workstation monitor...) Please visit http://www.dejanews.com/, or look back through the last day or two of postings to comp.os.vms and comp.sys.dec, as I just answered this posting somewhere else. I posted a couple of other URLs for other monitor-related sites, as well. -------------------------- pure personal opinion --------------------------- Hoff (Stephen) Hoffman OpenVMS Engineering ////////////////////////////////////////////////////////////////////////////// Newsgroups:comp.terminals,comp.sys.misc,alt.comp.hardware,comp.sys.sgi.hardware Path: utk.edu!cpk-news-feed4.bbnplanet.com!cpk-news-feed1.bbnplanet.com !cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!news.maxwell.syr.edu !news.bc.net!dragon.sk.sympatico.ca!canopus.cc.umanitoba.ca!roberson Organization: National Research Council Canada Message-ID: <5v0257$hlp$1@canopus.cc.umanitoba.ca> References: NNTP-Posting-Host: zeno.ibd.nrc.ca Date: 8 Sep 1997 05:23:51 GMT From: roberson@ibd.nrc.ca (Walter Roberson) Subject: Re: Tektronics terminal to sgi monitor In article , David Adams wrote: : :I would like to connect a Tektronics x-terminal with an SGI (D-M21G) :monitor. The Tektronics video output appears to be a 15 pin (5+5+5) :connector, while the SGI video input is 10 pins + 3 RGB "coax" type :connectors all in a modular female plug. I know very little about video :signal. Are these types of connectors totally uncompatible. Can I get a :special cable made? Can the Tektronics x-terminal generate the type of RGB :output that goes into the balen-connectors I see on the back of some :terminals? Any help *much* appreciated. Please cc any replies to Sounds like the x terminal is generating SVGA (or at least uses that connector.) I understand the D-M21G has two connectors, one a 13W3 and the other SVGA. I could be wrong about that, the model numbers change without detailed specs getting posted. Anyhow, read the FAQ at http://www-viz.tamu.edu/~sgi-faq on how to merge SVGA to 13W3. ////////////////////////////////////////////////////////////////////////////// Path: utkcs2!transfer.stratus.com!cam-news-feed2.bbnplanet.com !cam-news-hub1.bbnplanet.com!news.bbnplanet.com!news.maxwell.syr.edu !feeder.news.azstarnet.com!reader1.news.azstarnet.com!news Newsgroups: comp.terminals,comp.os.linux.hardware,comp.os.linux.questions alt.comp.hardware.homebuilt,alt.comp.hardware.pc-homebuilt,comp.periphs NNTP-Posting-Host: 169.197.34.100 Message-ID: <34D2657D.8C074A34@azstarnet.com> References: <34D04D18.391D@informatik.uni-kl.de> Date: Fri, 30 Jan 1998 16:42:54 -0700 From: Mike Nicksic Subject: Re: Sony Monitor (DCM-19) with unchangable horiz. frequency 63.34 kHz Weiping Zhang wrote: > > could anyone tell me please, how can I get this monitor running under > Windows NT and Linux. I am using a ATI Match64 Xpression PCI VGA card. > > Do I need to buy a new VGA card for this Monitor? and which one would > be a proper one? What is the best solution? Basically, you'd only get 1280x1024 resolution from this setup. That means you have to use a multiscanning PC monitor that gets up to 1280 x 1024 to set up your pc. Load the ATI utilities and drivers, then preset the PC for the scan rate of the monitor you want to use. Restart the computer with the multiscanner and make sure it's up in the resolution you need, then swap signal cables with your Sony. You may need to do some twiddling with the horiz. scan and refresh rates to achieve a stable picture. These can be adjusted on the monitor's internal circuit board ( if you're bold or experienced enough) or possibly through the ATI driver. Use another monitor Mike N. ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.comp.hardware.homebuilt, alt.comp.hardware.pc-homebuilt, comp.periphs, comp.terminals, comp.os.linux.hardware, comp.os.linux.questions Date: Fri, 30 Jan 1998 11:22:38 -0800 From: Ben To: Weiping Zhang Subject: Re: Sony Monitor (DCM-19) with unchangable horiz. frequency 63.34 kHz Check out http://www.photonweb.com/3dm/ for the video card & the cable that are designed to run your monitors on a PC Ben ////////////////////////////////////////////////////////////////////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ Archiver's Note: Another possibility is Mirage Fixed-Scan Monitor Support http://www.mirage-mmc.com/ (2001-08-11) For Sony CRTs (as sold by Sun Microsystems with a 13W3 connector), see also Keywire Technologies http://members.nbci.com/keywire/convert.html The GDM-17E20 needs just an adapter, but Keywire shows a mod to use separate Horizontal and Vertical sync. http://members.nbci.com/_XMCM/keywire/convert.html http://members.nbci.com/_XMCM/keywire/step_two.html ////////////////////////////////////////////////////////////////////////////// Date: Mon, 02 Feb 1998 23:59:46 -0500 From: Anthony Iannone To: David Newsgroups: alt.comp.hardware.homebuilt, alt.comp.hardware.pc-homebuilt, comp.periphs, comp.terminals, comp.os.linux.hardware, comp.os.linux.questions Subject: Re: Q: Sony Monitor (DCM-19) with unchangable horiz. frequency 63.34 KHz David wrote: > > >It will only run specifically at 1024x768 at 60Hz. > > Make that 1280x1024@60Hz not true... it will run at 640x350, 640x400, 640x480, 800x600, 1024x768, and 320x240. Possibly 320x200. Right now I am using a 63/64khz sony tube on my pc at 1024x758. It really works well with the Mirage video cards, although they are way expensive ($200+ for pci or vlb, $100+ for isa ) aiannone@nis.net ////////////////////////////////////////////////////////////////////////////// Newsgroups: alt.comp.hardware.homebuilt,alt.comp.hardware.pc-homebuilt, comp.periphs,comp.terminals,comp.os.linux.hardware, comp.os.linux.questions Path: utkcs2!transfer.stratus.com!cam-news-feed2.bbnplanet.com !cam-news-hub1.bbnplanet.com!news.bbnplanet.com!news.idt.net !news.maxwell.syr.edu!newsfeed.nacamar.de!news.fh-hannover.de !news.uni-stuttgart.de!uniol!news.north.de!news.ohz.north.de!news Organization: IstDa Online NNTP-Posting-Host: gigabyte.ohz.north.de Message-ID: <34d9bc3d.765306843@194.94.254.66> References: <34D04D18.391D@informatik.uni-kl.de> Reply-To: fchk@i-online.ohz.north.de Date: Tue, 03 Feb 1998 06:55:29 GMT From: fchk@i-online.ohz.north.de (Frank-Christian Kruegel) Subject: Re: Sony Monitor (DCM-19) with unchangable horiz. frequency 63.34 kHz On Thu, 29 Jan 1998 10:34:16 +0100, Weiping Zhang wrote: > >could anyone tell me please, how can I get this monitor running under >Windows NT and Linux. I am using a ATI Match64 Xpression PCI VGA card. > >Do I need to buy a new VGA card for this Monitor? and which one would be >a proper one? What is the best solution? For Linux only, you can use your old card. The magic thing are the proper mode lines in the XF86Config. (You need a second computer or terminal to connect to the Linux computer via telnet and Ethernet or serial in order to edit the X config. Remember, you won't see much until you have the right values.) You will need a day until you have the proper values. Finetuning can be done with xvidtune afterwards. Remove all modelines except the one you are going to use - probably 1024*768 or 1280*1024. You won't have a text mode any more, i.e., no picture until X11 has started up. Use xdm to get an X11 based login upon boot-up. You can do everything from xterms then. It's best to setup this before switching to the big monitor. I'm running a Sony GDM 1934 this way with a standard Elsa 2000 AVI 4MB in 1280*1024*64k @74Hz. 73Hz or 75 Hz don't work here. For NT - sorry, in general it won't work unless you buy a special, expensive VGA board that can drive fixed-frequency displays. There are some distributors in the U.S., but I don't know any in Germany. Frank-Christian Kr|gel -- fchk@i-online.ohz.north.de - 2:2426/3060.1 http://www.ohz.north.de/ ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.hp.hardware Date: Sun, 01 Mar 1998 15:21:25 -0800 From: No Use For A Name To: Bernardo Pi Subject: Re: HP 98785A and 98578X compatibility Bernardo Pi wrote: > > I would like to know how I can make these two HP devices work together: > A 98785A monitor (fixed frequency), and a 98578X adapter on an _old_ > HP 9000 345 workstation. > > It seems the graphics adapter is doing about 3 times the scan frequency > of the monitor. (BTW the 98578X has a set of 8 DIP switches on-board). As far as I know the 98785A is only compatiable with the 98594A, 98547A, and 98545A interfaces. The first two interfaces being the most modern. In order to use the 98578 you'll need some sort of external sync conversion. Good luck! > ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals Path: utkcs2!news.bbnplanet.com!newsfeed.internetmci.com!130.33.9.211 !news.sarnoff.com!msawicki Organization: noSPAMtoSarnoff_Corporation Message-ID: <35A40DCE.2641@sarnoff.com> References: <35A15B48.5413@sarnoff.com> NNTP-Posting-Host: 130.33.12.92 Date: Wed, 08 Jul 1998 19:24:46 -0500 From: Jeremy_Pollack Subject: Re: video terminal FM fiber link wanted All-- Jeremy_Pollack wrote: > > I'm looking for a product which would allow remote connection of VGA > (1024x1280 resolution) video terminals (RGB/H&V) via a FM fiber optic > link. Any suggestions? I received a few responses by e-mail... (thank you!) In keeping with Usenet newsgroup protocols, I thought I'd sumarize what I found out. Need: A remote so-called "VGA" video terminal, set up some 200 ft away from its host computer. For security and ease of cable stringing, fiber optic cables are desired to replace 5 coax cables presently used. Approach: Present SXGA (1280x1024) video cable had been split up as 5 coax cables (RGB/H&V), then rejoined at the remote monitor. Fiber optic modulators suggested to carry the SXGA signals. While a "composite" modulator has not been identified a number of manufacturers have been found who make suitable fiber Tx/Rx (transmiter/receiver) pairs (modulators & demods). These are generally designed as 5 BNC connections in, and 4 fibers out (H&V sync are combined on 1 fiber). Benefit: Fiber connections are secure, free from interference, and may be run over longer distances than coax. Fiber cables are generally smaller than coax bundles, so may generally be run more easily. Comment: If security and interference are not critical issues, coax signals may also be effectively bundled, so one might consider more specialized, smaller diameter, multiconductor (bundled) coax cables in place of the separate (loose) cables now being used. Suggested Vendors: --- Lightwave Communications Inc. 261 Pepe's Farm Rd Millford CT 06460 Phone: 203-878-9838 Toll-Free 800-871-9838 Suggested: (stand alone chassis type, rack mount also available) Tx: m/n 200.160.4204 $1,895 (list) Rx: m/n 200.160.4205 $2,395 (list) Requires FDDI grade multi-mode 4-fiber cable, 62.5 with ST connectors NB: Other models available which will also carry keyboard & mouse data. --- Optelecom, Inc. 9300 Gaither Road, Gaithersburg, MD USA 20877 tel: (301) 840-2121, fax: (301) 948-6357, 800-29-FIBER email: optelecom@optelecom.com Possible suggestion (needs to be verified): m/n 5654A available as stand alone High Resolution RGB/VGA and SVGA System with AGC, 160 MHz; or as Rack Mount Card High Resolution RGB/VGA and SVGA System with AGC, 160 MHz. Of possible additional interest: m/n 3650 - 3654A & 3453 High Bandwidth Video Transmission System (e.g., for process control, command center, etc). Extends high resolution graphic video signals up to 4 mi (6.4 km); depending on model/version can also send keyboard/mouse data. LASER versions capable of 15 mi (25 km), resolutions up to 2048 x 2048. --- Opticomm Corporation 6046 Cornerstone Court West, Suite 209 San Diego, CA 92121 tel: (619) 450-0143, fax: (619) 450-0155 Possible suggestion (needs to be verified):RGB/Video high-resolution: fiber optic 160-200 MHZ RGB or monochrome video transmission system for ultra high resolution remote displays. m/n RGB-9100 RGB/Video 160Mhz 3 Fibers Sync on/Green m/n RGB-9130 RGB/Video 200Mhz 3 Fibers Sync on/Green --- Math Associates A Division of Communications Specialties, Inc. 89K Cabot Court Hauppauge, NY 11788 Phone: (516) 273-0404 Fax: (516) 273-1638 EMail: info@mathassociates.com Possible suggestion (needs to be verified): "Fibervision" systems available to transmit RGB signals at up to 225 MHz (a composite system may be available). ==================== ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals Date: Sat, 15 Aug 1998 18:20:38 GMT From: abreese@worldnet.att.net Subject: Re: NEC Multisync 4FGe In article <1998081003594700.XAA28161@ladder01.news.aol.com>, patmo1@aol.com (Patmo1) wrote: > Dose anyone have, or know where i can find the pinout fot the 4FGe...thanks > It's avaiable at http://cssweb.nectech.com/fgseries/Data/pin.htm -- Alan Breese Systems Engineer NEC Computer Systems Division a.breese@neccsd.com abreese@worldnet.att.net ////////////////////////////////////////////////////////////////////////////// Information on "Representation of Video Signals" may be obtained here: http://www.netlib.org/graphics/video.signals by Tom Duff. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals References: <87pvarij3s.fsf@kynopolis.dyn.ml.org> Reply-To: mdalene@ctol.net Message-ID: Date: Sat, 14 Nov 1998 21:11:04 -0500 From: mdalene@pinkrose.ctol.net (B'ichela) Subject: Re: CGA monitor with VT240? In article <87pvarij3s.fsf@kynopolis.dyn.ml.org>, Nubis Wolf wrote: > > Hello: > I have a VT240 (without VR24x) that I was hoping to use as a >terminal for a VAXstation. Unfortunately, I don't have the original >monitor for it; however, I do have an old CGA monitor that I was >hoping to use with it. Is there any possibility? The VT240 has a coax >monitor connecter (or at least it has a little screen picture above >it), a DB15 monitor connector, a DB9 printer port, a DB25 comm port >and something labeled ``20ma'' (what would this be?). Monitor is an Sounds like the system is set up for a Composite Video display. does it use one BNC or RCA plug for the monitor? if so plug it into a RF Modulator or your favorite VCR and use your television! 80 cols will suck though. set terminal to 40 cols. or use a composit monitor (such as the ones suggested below). A CGA monitor has Seperate Up-going Horizontal and Vertical signals. three seperate Red, green and blue Digital lines and one Intensity line. (all signals are digital). meaning a max color option of 2^4 or 15 color combinations plus black. to use a CGA monitor on such a system would require a custom protocol conversion kit. possible monitor modifications (to make it a RGB analog monitor). If you can find a Color Composite monitor. such as the Commodore 1701 or Commodore 1702 or the Commodore 1902 Composite/Digital RGB (CGA Mode) monitor, you could use it for the terminal or even watching your favorite movies! (monitors come with built in speakers, Seperate Y/C (S-vhs mode, RCA to s-VHS plug cable required to hook to the y/c lines on the back of the Commodore 1902 or 1702 monitors. 20 MA loop is used for longer distance Serial transfer connections. its similar to RS-422. (not compatible however). it uses a current fixed signal (20 ma) to compesate for different voltage drops. Unless you are going to use 20ma current loop. make certain that your terminal is set for Rs-232c mode. if it does NOT work in that mode, you will need to locate a 20ma curr loop to rs232c adaptor. -- A pearl of wisdom from the y2K newsgroups: ------------------------------------------------------------------------- Y2K appears to be the Baby Boomers mid-life crisis, and it has the potential to be a dandy. -- Anonymnous -- -------------------------------------------------------------------------- B'ichela ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Organization: Saint Marks College Message-ID: <74smrg$6qr$1@news.mel.aone.net.au> References: <74pqch$48q$1@nnrp03.primenet.com> Date: Sat, 12 Dec 1998 13:40:32 +1030 From: "Geoff Roberts" Subject: Re: VR290 Schematics/Prints Jeff Shirley wrote in message <74pqch$48q$1@nnrp03.primenet.com>... >Greetings. > >I finally got my DEC 3000 M500 to drive my VR290 (a PMAGB-BC with the right >oscillator). Unfortunately, shortly thereafter the VR290 took a dive. >Anybody have schematics/prints they could copy for me? > >The symptoms? No picture for a long time after power-up, and when it does >show up, it is about half regular height and about 3/4 normal width. Tweaking >the pots does change it, but only relative to it's shrunken size. The failure >followed about a week of slight picture shrinkage. My guess is HV or >deflection. Might try a shotgun approach. It's very likely that dead/leaky electrolytic capacitor(s) is the source of your problems. I'd change all the caps I could reach in the psu and line stages, particularly if they are high voltage, low value, and especially if they are near heatsinks or high dissipation resistors. Any that appear discoloured, out of shape or bulging (at the top for instance) or appear to have leaked gunk onto the board are guilty until proven innocent. WARNING: Try the following only if you have some idea what you are doing, and appropriate safety precautions are taken. [[ Warning: you could get hurt trying the following ]] If you are careful, the guilty party may be revealed by bridging a new 350v ~10uf cap across the ones in the supply, one at a time, until you see a sudden improvement in the pix. Remember to discharge the cap after each bridging or you will zap something else for sure. DANGER HIGH VOLTAGE. If you are not comfortable working on 300v dc switching psu circuits, while they are energised, let someone who is do this. Bear in mind that big caps in Switch Mode PSU's can store a very (un)healthy (for you) amount of energy, if you get across one that's not discharged, you will know it in a very big way. This CAN happen even when the unit is switched off, so watch it. You should also bear in mind that working on ungrounded "hot" chassis systems is perilous without a mains isolation transformer, as you can get a ~ half mains voltage shock simply by getting between the chassis and a decent earth, like the case of a computer. This can ruin your whole day. Permanently. A general check for dry solder joints is also a good idea, but this sounds more like caps. I'd say either your your main HT rail is low, or the EHT is way high (less likely). Measure the HT as it comes out of the PSU, it should probably be around 120v -150v or so. If it's under a hundred, I say that was what's upset things. Since the monitor is basically still working, it's less likely (though not impossible) for it to be a transisor or diode. Hope this helps. Cheers Geoff Roberts Computer Systems Manager Saint Mark's College Port Pirie, South Australia geoffrobx@stmarksx.ppx.catholicx.edux.aux Spam countermeasures, remove the x's from email address before using ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Organization: Digital Equipment Corporation Message-ID: <36894171.4B749A73@digital.nospam.com> References: <01be3106$8b933dc0$0f42b6d1@umpire.neca.com> Date: Tue, 29 Dec 1998 15:54:09 -0500 From: Glen Kelley Subject: Re: digital monitors specs help me please guess wrote: > HI I have some Digital monitors model #pcxbv-pc and pcxcv-ac and would like > to find the specs for the monitors ,I check Digital web site and did a > search on the monitors but have found nothing as to what they are. please > email any Info you can to me at guess21@hotmail.com Thanks PCXCV-AC Scan Rate (H) 31/35.5/38/48/56Khz Scan Rate (V) - 50-90Hz Band Width - 70Mhz 640x480 @75Hz = max 800x600 @75Hz = max 1024x768 @70Hz = max glen kelley compaq ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.dec Message-ID: <785iau$4t$1@nnrp1.dejanews.com> References: <77tder$icg$1@news.asu.edu> Date: Wed, 20 Jan 1999 21:37:36 GMT From: xavax@my-dejanews.com Subject: Re: VRC16 memory clear? In article <77tder$icg$1@news.asu.edu>, "scottv" wrote: > I've got an old VRC16 that doesn't want to synch to some resolutions on on > my new video card. Is there a way to clear the user stored settings? > > Scott > > There's a small hole in the control panel which will allow a match or similar to operate the reset switch. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.hardware Message-ID: <797e18$5ra$3@remarQ.com> References: <794ho3$mos$1@infosun2.rus.uni-stuttgart.de> <794pp8$ahc$1@Starbase.NeoSoft.COM> NNTP-Posting-Host: 208.164.40.177 Date: 2 Feb 1999 17:52:40 GMT From: fhahn@zdnetmail.com (Frank Hahn) Subject: Re: VGA Monitor on a Sparc IPX >In article <794ho3$mos$1@infosun2.rus.uni-stuttgart.de>, >Matthias Bilger wrote: >>I got a Sparc IPX with this strange 13W3 Connector - is there any >>"HOWTO" about building an adaptor to use a standard VGA Monitor >>(NEC 4FGe) - or my Sony GDM 1950, which was also delivered in a >>Sun OEM Version (but mine has 5 BNC Connectors) On 1 Feb 1999 11:54:48 -0600, Timothy J. Bogart wrote: >Believe it or not, even IBM has started to use these >types of connectors...their latest monitors have both >15 pin and 13W3 connectors on them. > >People make the adapters...for example (expensive) > >www.ultraspec.com > >Though I would be inteested in seeing some kind of tech >notes on that strange looking beast for fun! There are adapters available which cost less than adapter cables. We purchased a couple of Sun 13W3 to 4 BNC cables a couple of years ago and they cost about $80.00 each. I think you can get adapters (either from 13W3 to BNC or 13W3 to DB15 VGA) for US$20-$30. Something to keep in mind is that Sun's typical video output is 1152X900@66Hz vertical, 61.8KHz horizontal. If your monitors can't handle this, you will be out of luck. Also, I don't think you need to use all five of the BNC connectors. Both at work and at home, the cables I've used have just four BNC connectors and we have not had problems. If you do a search of http://www.dejanews.com for this topic, you will come across a list of adapters someone else had come with. -- Frank Hahn ////////////////////////////////////////////////////////////////////////////// Date: 18 Mar 1999 18:04:32 GMT From: Jeff Shirley Subject: Re: 4000-90 Color Monitor Replacement Antonio Carlini wrote: : In article <7cp4rv$333$1@nnrp1.dejanews.com>, culverp@hillwpos.hill.af.mil wro te: : > : >I need to replace my Digital RGB monitors with new hardware. Has anyone done : >this and how did it work out? What did you replace with? What was the : >approximate cost? Thank you : I ran a VAXstation 3100-76 using a Toshiba of some kind that had BNC inputs : and could do sync-on-green. I would be surprised if the VAXstation 4000-90 : were any different. I have one on my desk connected to a PCXAV-WZ which works : well but I would expect any modern monitor to be able to cope with the H/V : scan rates - all you need to check is that it accepts RGB BNC inputs and does : sync-on green. : Antonio : Antonio Carlini Mail: carlini@marvin.reo.dec.com : DECnet-Plus for OpenVMS Engineering : COMPAQ Reading, UK I read somewhere about people using Iiyama monitors to replace failed DEC units. I bought one when my old VR290 died. It is truly amazing. Works on DEC, Sun, and PeeCee, and the image is much better than that of what it replaced. Jeff. -- ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.hardware Message-ID: <7d3cg3$pii$1@nnrp1.dejanews.com> References: <7cjeqq$c3h$1@pheidippides.axion.bt.co.uk> <7crlff$2pre@enews4.newsguy.com> Date: Sun, 21 Mar 1999 18:07:06 GMT From: chtotev@my-dejanews.com Subject: Re: Sun Monitor Pin Out for VGA Use In article <7crlff$2pre@enews4.newsguy.com>, info@fixedfrequency.com (Emil Darmo) wrote: > In article <7cjeqq$c3h$1@pheidippides.axion.bt.co.uk>, jon.2.walker@bt.com > says... > > > >I've got a Sun 20" monitor # GDM 20D10 / 3651324 Made Jan '94 which I would > >like to use on my PC. [...] I use a SUN 19" GDM 1962B from 1992 with my PC. It took me a bit - but I succeded buying a ATI 3D-Xpression graphic card and an adaptor - which wasn`t too expensive. You need the composite sync signal from the VGA output which - as far as I know - is only produced by ATI cards (they are also common in Macs --> they need also csync signals). You can enable csync with the Win 9x driver and with Xfree86. You should know that you lose compatibility to low resolutions. There will be no sync! I use LINUX with a graphical login therefore and when something goes wrong you should have an old VGA-monitor aside... Christian ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.hardware Message-ID: <7crlff$2pre@enews4.newsguy.com> References: <7cjeqq$c3h$1@pheidippides.axion.bt.co.uk> Organization: MIRAGE (310) 258-1202 From: info@fixedfrequency.com (Emil Darmo) Date: 18 Mar 1999 19:51:11 GMT Subject: Re: Sun Monitor Pin Out for VGA Use In article <7cjeqq$c3h$1@pheidippides.axion.bt.co.uk>, jon.2.walker@bt.com says... > >I've got a Sun 20" monitor # GDM 20D10 / 3651324 Made Jan '94 which I would >like to use on my PC. Does anyone have details / URLS for info on connecting >it, eg pin outs etc? Here is the pinout for the Sun 13W3 cable: 1 0 0 ::::: 0 ^ ^ A3 A1 A1 Red/R-Gnd A2 Green/G-Gnd A3 Blue/B-Gnd pin 1 N/C pin 2 N/C pin 3 Sense 2 pin 4 Sense Ret. pin 5 C-Sync pin 6 N/C pin 7 N/C pin 8 Sense 1 pin 9 Sense 0 pin 10 C-Sync Ret. You may spend lots of hours trying to patch up cables and get some sort of limited PC compatibility out of this monitor or up front purchase a MIRAGE video card which supports maximum PC compatibility on a monitor like this (Including Multiple Resolution graphics and text in full screen mode under DOS, Win9x, NT, Linux, OS/2,...) and is as easy to setup with this monitor as plug-n-play. If interested in second solution, check the following URL: http://www.mirage-mmc.com or http://www.mirage-mmc.com/sun -- Emil ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.sun.hardware Date: Wed, 12 May 1999 15:25:06 GMT From: Frank Hahn Subject: Re: Using a VGA Monitor with a Sparc 10 On Wed, 12 May 1999 02:04:07 GMT, Toby Hamson wrote: > >I have just purchase a sparc 10. I have a VGA Monitor that I planned to >use with it, by using a '13W3M to HDD15F' adapter, as sold by dalco.com. > >My monitor is a Komodo H40 VGA/SVGA 14 inch. > >However, when I boot up, I just get a blank/black screen. If anyone can >provide any pointers about what to try, where I went wrong, if it will >ever work, anything ! I think the Sun's standard video output is 1152X900@66Hz vertical, 61.8KHz horizontal (I think these numbers are correct). I doubt that your 14" monitor is going to be able to do the above. In the past, many of the cheaper 17" units could not do this. I have a Viewsonic PS790 which is a 19" unit connected to a Sun Sparc 20 and it works with no problems. I also have a Viewsonic PT795 which is a 17" unit hooked up to a Windows machine which will also work with the Sun. At work we have a couple of Princeton E075 17" monitors connected to Sun IPC's. These work okay but there is a slight wiggle to the picture in both top corners. Maybe you can compare the specifications of these monitors to yours and see if you can get there. -- Frank Hahn ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.hp.hpux Date: Thu, 12 Mar 1998 23:56:03 -0700 From: Steve Ruby Subject: Re: HP A2094A Monitor with PC? Help! Travis Froess wrote: > > cdh024@email.mot.com wrote: > > > 1) is the A2094A sync on green? at the back of the monitor, there are 5 BNC > > connectors: R,G,B, V Sync, and H Sync - am I correct by assuming that this > > monitor does NOT sunc on green? > > > > This monitor does sync on green. I believe that the other > 2 sync BNC connectors are for external syncing. I assume you are trying to get it to work on a PC yes it is sync on green or it will sync on HV if it has input there. The newer 20" (A4033A) with the button controls will multi sync and work fine on PC's but the older ones with dial controls such as the A2094A (I think) are fixed res and will work on a PC but only at that resolution try 1280X1024X75Hz or 1024x768 Dont' remember exactly but I've used the old dial ones on PC's. they are better for MACS though were you don't have to worry about the resolution switching you get in DOS mode. ////////////////////////////////////////////////////////////////////////////// Date: 18 Jun 1999 15:21:44 GMT From: Jonathan Stone Reply-To: jonathan@DSG.Stanford.EDU Newsgroups: comp.sys.dec, comp.sys.dec.micro, misc.forsale.computers.workstation Subject: Re: FS: 11 Digital VR262 19" monitors $40 US each. In article <376A09B1.806316A8@idsi.net>, Schroeder writes: |> Are these compatible with a PMAGB-BA framebuffer? I don't think so, but |> it doesn't hurt to ask. Please email me as soon as possible. Not really. The 262 is a mono 1024x896 monitor. It only works with a PMAGB-BB -- a PMAGB-BA with an auxiliary crystal the same frequency as on the PMAG-B. Even then it'll be in mono (using green to supply sync). ////////////////////////////////////////////////////////////////////////////// Date: 18 Jun 1999 16:22:16 GMT From: Jeff Shirley Newsgroups: comp.sys.dec, comp.sys.dec.micro, misc.forsale.computers.workstation Subject: Re: FS: 11 Digital VR262 19" monitors $40 US each. : Not really. The 262 is a mono 1024x896 monitor. You can do what I did. De-solder the oscillator from a PMAG-B (or find a 69.1968MHz part elsewhere), install it in the auxiliary socket on the PMAGB-B, and set the Osc jumper to 1. This worked great for a VR290. Jeff. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.hp.hpux,comp.sys.hp.hardware,comp.sys.hp.misc Message-ID: <37A0AFE4.35E27C3@gmx.de> References: <7n9eas$fof$1@niobium.hgmp.mrc.ac.uk> <7nafs8$r3l$1@ocean.cup.hp.com> NNTP-Posting-Host: hil-qbu-ptt-vty45.as.wcom.net Organization: CompuServe Interactive Services Date: Thu, 29 Jul 1999 21:47:48 +0200 From: Thilo Domsdorf Subject: Re: Help with setting up old Apollo/HP 715/75 David Dalton wrote: > F Mattes (fmattes@hgmp.mrc.ac.uk) wrote: > > :>apollo hp 715/75 > :>NO MONITOR > > :>My question is now how to set up the machine. > :>The hd does'nt contain hp-ux, but I have hp-ux on cd. > :>I tried a hp A1097C monitor, but the monitor remained black. > > :>Can I redirect the boot prompt to a serial port ? > > Sounds like the console is already on the serial port > (or maybe the 1097 monitor is dead). Try connecting a > terminal to the serial port and see what you get. > > :>Can I use a pc multi sync monitor. The video output looks pc stylish. All HP Systems use sync on green, that's the reason they only need 3 lines on the monitor cable (red, green, blue and hsync on green) > > No, not on the 715/75 (or 715/50 or 715/33). There is an entirely different The older 715/XX series like 715/33, 715/50 and 715/75 had a switch (you can see a sticker on the back that shows the dip switch settings) to set resolution/refresh rate to 1024*768@75 Hz, 1280*1024@ 72Hz and a greyscale mode whose rates I do not remember. The 715/64, 715/80, 715/100, 715/100XC support about 10 different grapic settings/ refresh rates; from std VGA 640*480 up to 1280*1024@75Hz VESA. Std setting should be Monitor selection No. 2, which is 1280*1024@72Hz. The A1097[ABC] is a fixed frequency monitor, that works at 1280*1024@72Hz. All newer HP Monitors (beginning with the A4033[ABC]) are multifrequency monitors that should work fine on every workstation. Some PC monitors, especially 15" up to 17" types sometimes have trouble with the high refresh rate, they used to fail after short time. > beast known as 715/100 (or 715/64 ir 715/80) that does support PC monitors, > but you do not have one of these. As long as your 1097 monitor is working > you should be OK. > > If you get any output on the 1097 monitor, then hold the ESC key to prevent > booting. Press "a" to enter the ADMIN mode and then "help path" for > instructions on switching the console path to RS232. Obviously you must > have an HIL keyboard attached to do this. > > -- > -> My $.02 only Not an official statement from HP {They make me say that} > -- > As far as we know, our computer has never had an undetected error. > --------------------------------------------------------------------------- > David Dalton dalton@cup.hp.deletethis.com 408/447-3016 ////////////////////////////////////////////////////////////////////////////// Date: Sun, 05 Sep 1999 16:32:25 -0500 To: Kent Rankin Organization: Applied Synergy, Inc. Newsgroups: comp.os.linux.hardware, comp.os.vms, comp.sys.dec, misc.forsale.computers.monitors Message-ID: From: Chris Scheers Subject: Re: FS: 5 DEC VRT19-HA 19" Triniton monitors ; $135 US Kent Rankin wrote: > > >Where would these be shipping from Kent? Do you know if they're > >essentially the same as the Sony GDM-1962? If they are, they should be > >useful on Sun systems as well. > > They are GDM-1961's. If I recall correctly, they are 1152x864 at 72Hz. 1280x1024 @ 66Hz and 72Hz. ----------------------------------------------------------------------- Chris Scheers, Applied Synergy, Inc. 817-237-3360 (Voice) 817-237-3074 (Fax) Internet: asi@airmail.net ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.hp.hpux NNTP-Posting-Host: dialin-145-254-066-228.arcor-ip.net (145.254.66.228) References: Message-ID: Organization: dynalabs Network Research Unit Date: Thu, 04 Dec 2003 01:37:16 +0100 From: Michael Piotrowski Subject: Re: HP A4032 Monitor on PC MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Jaco van der Schyff writes: > If anyone can help me, I want to connect my HP A4032 monitor from > my HP C110 workstaion to my PC. I read somewhere that this could > be a problem because of different signalling methods used between > the monitor and pc vga. Is it possible to do it? AFAIK (and according to what you can find on the Web) this is a multisync monitor supporting both sync-on-green (as typically used by HP workstations) and separate sync (as typically used by PCs). You would only need a cable with 5 BNC connectors. > What am I letting myself in for? What is tha max resolution that I > would be able to get from this old beast ? 1280x1024@70hz?? What I found on the Web is this: Max Resolution: 1280 1024 H Freq / V Freq: 20-85 kHz / 50-120 Hz If this is the 17" sibling of the A4033A (which I once owned) this should be a very fine monitor. HTH -- Michael Piotrowski, M.A. Public key at ////////////////////////////////////////////////////////////////////////////// Date: Sun, 05 Sep 1999 22:45:32 GMT Organization: FlashNet Communications, http://www.flash.net Newsgroups: comp.os.linux.hardware, comp.os.vms, comp.sys.dec, misc.forsale.computers.monitors, misc.forsale.computers.workstation Message-ID: <37d2f264.802777632@news.flash.net> From: Duncan Brown Subject: Re: FS: 5 DEC VRT19-HA 19" Triniton monitors ; $135 US On Fri, 03 Sep 1999 19:09:34 GMT, "Kent Rankin" wrote: > The monitors are located in Pulaski, VA, 24301. > > They are DEC model VRT19-HA monitors with Triniton tubes. Quite nice >monitors, mind you, as I use several of them on a daily basis. Sony OEM >part number GDM-1961, in case that's useful. I bought a couple of these for use with some VXT2000 boxes (without monitors) that I had picked up cheap. That is one of their original applications in the DEC world (if you had the high-end graphics card in the VXT). As he says, they are *quite* nice! With the fixed resolution and pair of fixed frequencies and sync-on-green they are problematic to use on PCs, but for just about any workstation or X-window term of that era (~6 years ago?) there's a good chance this *was* the high-end monitor offered. Duncan ////////////////////////////////////////////////////////////////////////////// Date: Tue, 23 May 2000 06:06:38 +0800 Organization: DCI HiNet Newsgroups: comp.terminals Message-ID: <8gcbk0$1uk@netnews.hinet.net> From: n/Dan Jacobson Subject: added extention cable to monitor, now shadows on screen In an effort to move my PC and it's fan farther away from me as to reduce noise pollution, I bought a 10 meter long extension cable (PC<-->monitor) for my Lemel monitor, but now there are shadows to the right side of each character on my screen, e.g., I looks like II but of course the right component much fainter... I tried grounding the cable's connector to a water pipe, but there was no improvement... any suggestions? Thanks. -- Dan Jacobson==n http://www.geocities.com/jidanni ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals Message-ID: <392A96BB.1036C947@GD-CS.Com> References: <8gcbk0$1uk@netnews.hinet.net> To: =?iso-8859-1?Q?=BFn=A4=A6=A5=A7=2FDan?= Jacobson Date: Tue, 23 May 2000 14:33:31 GMT From: "Scott G. Hall" Subject: Re: added extention cable to monitor, now shadows on screen The maximum length that you can extend a SVGA signal is about 1 meter (or 3 feet). What you are experiencing is reflections and interference with the signals on the wire. If you get good results with anything longer, you are lucky to have a video card with higher voltage levels or adaptive circuitry. A solution to a length from 1.5 meters (5 feet) and longer is a video repeater box, where there is an amplifier and noise reducer in the middle. I have seen some where there is an encoder on one side and a decode on the other. Also check out one of the new KVM devices (keyboard, video, mouse). Even though most KVM's are for multiple systems to a single keyboard, monitor and mouse, they also provide longer lengths of distance from the work area to the CPU. -- Scott G. Hall General Dynamics Communication Systems ph: 919-549-1189 North Carolina Systems Center email: Scott.Hall@GD-CS.Com Research Triangle Park, NC USA ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.unix.solaris NNTP-Posting-Host: 24.91.122.207 NNTP-Posting-Date: Mon, 20 Sep 2004 18:14:17 +0000 (UTC) References: Message-ID: Date: 20 Sep 2004 11:14:16 -0700 From: Jack Dao Subject: Re: Sun X7121A monitor and shadowing Alan Coopersmith wrote in message news:... > > dao@snakebrook.com (Jack Dao) writes in comp.unix.solaris: > | > |I have a Sun21" monitor X7121A that I have connected to a Sun Ultra 60 > |and a PC with an ATI Radeon 9200 graphics card. The graphics on the > |Sun (With an Expert3D-Lite) is fine. When I switch to the PC though, > |everything (text, windows etc) has shadows.It makes my eye hurt. > > Check your VGA cable from the PC to the monitor - I've seen this with > bad VGA cables before. Yes, it's amazing what a good quality cable can do to poor video performance. I splurged and bought a new one and all is fine now. Even at 1600x1200. Thanks, Jack ////////////////////////////////////////////////////////////////////////////// Date: Thu, 01 Jun 2000 10:28:37 -0500 Organization: Avalon Networks Inc. Newsgroups: comp.terminals Message-ID: <39368125.8127F65@iercomputer.com> From: Paul M Tucker Subject: Re: NCD NC1764AA Monitor specs, please? Date: Thu, 01 Jun 2000 10:28:37 -0500 Organization: Avalon Networks Inc. Newsgroups: comp.terminals Message-ID: <39368125.8127F65@iercomputer.com> From: Paul M Tucker Subject: Re: NCD NC1764AA Monitor specs, please? "R. O'Connor" wrote: > TIA for any info on refresh, horiz, vert rates (and whatever else ;-). > > -- > Rory O'Connor - > r o o c o n n > a t n c > r r d o t > c o m Rory, Here are some specs on the NCD 1764AA monitor: 1152 X 900 max resolution .28 dot pitch vertical frequency range: 50-90 Hz horizontal frequency range: 30-82 kHz -Paul Tucker Iowa Electronic Recovery (319)351-3058 ////////////////////////////////////////////////////////////////////////////// Information on using Hitachi monitors/CRTs in different ways: http://www.ff-net.demon.nl/hitachi/ ////////////////////////////////////////////////////////////////////////////// Matrox video card tips from http://saturn.tlug.org/sunstuff/ffmonitor.html (web page maintained by Mike Frisch) Matrox Tips In order to activate sync-on-green in the Windows 95 Millennium/Mystique driver, just change "H_SYNC_POL" to 32 in the "mga.mon" file. (Information courtesy: Ersin Esen ) Andy reports using a Mystique with a Sony GDM-1950. This tweak has also been reported to work on the newer Millennium II video cards as well. If anybody has a Matrox Millennium/Mystique G200, please let me know if it's applicable there as well. Daniel McKeel is very seriously into using a Matrox card with a fixed-frequency monitor. He has reprogrammed the BIOS of his Matrox Mystique which could lead to interesting things (ie. configuring a text mode for the BIOS screens, etc). He alludes to the program "progbios" and provides this link. http://grafi.ii.pw.edu.pl/gbm/matrox/biosprog.html What cable do I need? If your monitor has a 13W3 connector, you will need an adapter to go from 13W3 to an HD15M (VGA) connector. Several companies on the 'net sell these for around $30 USD each. Some even have built-in sync combiners which means it'd be possible to use virtually any PC video card with monitors requiring composite sync (i.e., Sun monitors). If your monitor has 3/4/5 BNC connectors, it's possible to use a 5 x BNC to an HD15M (VGA) cable. These are quite common as they're the same cable used when connecting higher-end monitors (those with BNC connectors) to a standard PC. These can be had from most well stocked computer stores for between $30-$50 USD depending on the store/quality of the cable. Remember that BNC monitors are either sync-on-green (3 BNC connectors), composite sync (4 BNC connectors) or separate sync (5 BNC connectors). It's also quite possible for monitors with 5 BNC connectors to support composite sync *and* sync-on-green, but obviously not the other way around. .............................................................................. ATI Tips ...ATI supports composite sync without the need for a sync adapter. If you want to use a Sun monitor (or any other that requires composite sync), the ATI cards are a solid choice. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video, sci.electronics Message-ID: Organization: TekWiz's Society From: TekWiz Date: Tue, 11 Feb 2003 08:16:04 GMT Subject: NTSC on VGA Monitor--Quality? (Re: Bob Myers 1995 Post) Hi! I have been trying to figure out for several years now why video on computer monitors looks nothing like it does on a standard TV. All the video cards with TV tuners have dim images, hot whites, with wierd colors. My friends do professional video editing, and while the preview looks super on the NTSC TV, it looks bad on the computer monitor. Initially I thought it was just a bad ATI AIW, but I also played with a Matrox G400TV and an NEC 15" monitor and an old 1702 Commodore 14" NTSC monitor, and the NTSC output from the Matrox looked far better on the Commodore than the NEC. I also noticed in 1991 on an Amiga 1080 VGA/NTSC monitor that the NTSC had the same strange quality, while the VGA was great. Reviewers always like to review all the TV cards as just great, and also those new Viewsonic converters. However I did see one post on some forum after an enthusiastic review of the converter where one person described the video in the same way, and asked if all the reviewers are blind. The answer was that the stuff being smoked must be good... I have looked for a technical reason for this all over, and didn't know if it was the CRT or the electronics, and tried again today when I suddenly found this old post by Bob Myers, an engineer, who explained the technical differences in the tubes, and I think that's the answer. TV screens are vastly different than VGA tubes and are made to display bright-looking video, while VGA screens are designed to display sharp and precise pixels. So there is no substitute for a standard TV if you want to enjoy your TV watching I think...? Am I interpreting Bob's explanations accurately? .............................................................................. Newsgroups: sci.electronics Date: 1995/07/02 From: Bob Myers Subject: Re: VGA & NTSC monitor crt design Q's Samuel M. Goldwasser (sam@stdavids.picker.com) wrote: > > ? yoke voltage > It is yoke current, not voltage. Probably depends more on high voltage > field gradient so bigger tube not necessarily larger current. Deflection > angle significantly impacts deflection requirements. However, there > are differences between yokes for different scan rates. A little more on this. It IS primarily the 2nd anode voltage which determines the yoke current requirements in a monitor, all else being equal ("all else" meaning mostly the deflection angle and the sweep rate). The current requirement goes up as roughly the square root of the ratio of the voltages. The larger tubes DO tend to run at higher voltages to get sufficient brightness over the larger screen area. And, as Sam mentioned, the max. sweep rate is a big factor; you don't see many 17" displays designed for VGA only, so the deflection current CAPABILITY is quite a bit greater in the larger screens, even though there may not be much difference between the current required in a 14" and the current required by a 17" RUNNING IN THE SAME MODE. > Sure. > >3) what are the differences between a monochrome VGA tube and a > >monochrome TV tube? > Beam focus is usually better for a VGA tube. Otherwise there should not > be any fundamental differences. There's actually a considerable difference between TV and computer-display tubes of the same size. TV CRTs are optimized for brightness--up to three times or so the brightness of a comparable-size computer-grade CRT--at the expense of spot size. This has an impact on the focus and other aspects of the electron gun design (for one thing, the cathode current's gonna be higher, but you don't need as tight a beam) plus changes to the shadow mask and phosphor screen. TV CRTs are usually 110 degree or 114 deg. deflection; computer types are almost without exception 90 degree tubes. The phosphors themselves are often of different formulations, owing to the differences in typical white point settings and "burn" resistance requirements of the two markets. The fundamental operation is the same, of course, but there are considerable differences in the design details. > >4) are there differences between a VGA yoke and a TV yoke? yes, probably > >impedeance and such design changes to work at the different frequencies, > >but what about the basic alignment to the tube neck? > Yes, don't know the specifics. Again, the basic operation is fundamentally the same, but the computer application requires much better control of the yoke design and assembly. One big difference in the applications is that the TV image is usually overscanned, which hides a lot of problems with the yoke's effect on geometry, corner focus and convergence, etc.. > >could a monochrome TV tube be subsituted for a monochrome VGA tube of the > >same size? use the matching tube/yoke, or the monochrome VGA yoke on the > >monochrome TV tube? > Probably. ...Not. At least in going in the TV -> VGA monitor direction, the poorer quality of the TV yoke would be readily apparent, if it worked at all. This assumes that the basic electrical characteristics of the yokes were similar, which is far from a given--there are too many different types of yokes in use, particularly on the computer monitor side of the question. Also, don't forget that the TV yoke was intended to run at 15,734 Hz ONLY; the VGA, at 31.5 kHz. The VGA yoke might be from a multisync monitor, in which case it was designed to run FASTER than 31.5, but not slower. It most likely doesn't match the TV yoke in any parameter except gross appearance. > Putting a small CRT into a larger yoke may work without too much effort > Mono is a lot less critical than color and you can play with the > controls as well as the geometry correction magnets to optimize it. > If you swap all of the electronics, your HV may be too high which will > increase the stiffness of the beam and the required deflection power. > If you are lucky, the internal controls will have enough range to > compensate. > I have never done this with computer monitors. With TVs, swapping yokes > often works but may require an adjustment to size or the addition/deletion > of a size coil. > Whatever you decide, respect the voltages present inside even small > monitors. This will include both line connected components as well > as the high voltage--which you will need to be swapping if you decide > to pursue any of this. Even the small CRTs are an implosion hazard, > line voltage is line voltage and dangerous, and the high voltage can > still be a show stopper. Basically, I agree with what Sam's saying above, but I'm less confident in the likelihood of an acceptable outcome, particularly if you don't have much experience working with the innards of CRT monitors and/or don't have adequate test equipment to do at least some rough checks before the smoke test. Swapping yokes between TVs is relatively easy and likely to work, just because there's so much similarity between TVs. I would recommend that you not try to do this yourself--get someone familiar at least with television troubleshooting/repair, and preferably computer display service, to look at this for you. -- Bob Myers ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video, sci.electronics Message-ID: <3e4bf03c$1_3@hpb10302.boi.hp.com> References: <3e494d78$1_3@hpb10302.boi.hp.com> <3e4a9ce3_2@hpb10302.boi.hp.com> <8bfm4vsuv0u51d6h9t7f5euiq6bo51sknp@4ax.com> Date: Thu, 13 Feb 2003 12:21:31 -0700 From: Bob Myers Subject: Re: NTSC on VGA Monitor - Quality? (Re: Bob Myers 1995 Post) "TekWiz" wrote in message news:8bfm4vsuv0u51d6h9t7f5euiq6bo51sknp@4ax.com... > > Would it be correct to assume that a digital HDTV video signal would > therefore look much better on a computer monitor, (being digital) just > as a series of low-loss jpeg images would look if displayed > consecutively? It can be better, but only in part because it's "digital". And broadcast HDTV still suffers from some problems that will creep in, vs. the same image had it been kept as full-bandwidth RGB, again due to the nature of the encoding/compression systems used. Remember, a 1920 x 1080 image at 30 frames/second - about the worst-case data rate for HDTV - represents about almost 1.5 Gbits/second of data if it were transmitted as 24 bit/pixel RGB. All you can send over a standard TV channel is a little less than 20 Mbits/second, so obviously there's a lot of compression going on here, and it IS lossy. Also, HDTV is a lot more complicated than just a series of JPEG images; standard broadcast HDTV uses a variation on MPEG-2 encoding, which encoded SOME frames in a manner similar to JPEG, while others are (to put it somewhat simply) "made up" (or predicted) by the receiver, from motion and predicted-frame-error information included in the transmitted data stream. If you look at the data rates, something less than one bit (on average) is being transmitted per pixel of the final displayed image. The HDTV encoding process again gives up color resolution (vs. luminance resolution) as compared with the RGB original (meaning that you can't distinguish extremely fine detail from chrominance variations only), and will also show certain artifacts (like the "blockiness" you sometimes see with digital satellite transmissions) owing to the compression process. So it's still not as good as the RGB original by a long shot, but then, the human eye is a very forgiving thing, especially under typical TV/video conditions. -- Bob M. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video, sci.electronics Message-ID: <3e4d3af0_3@hpb10302.boi.hp.com> References: <3e494d78$1_3@hpb10302.boi.hp.com> <3e4a9ce3_2@hpb10302.boi.hp.com> Date: Fri, 14 Feb 2003 11:52:30 -0700 From: Bob Myers Subject: Re: NTSC on VGA Monitor - Quality? (Re: Bob Myers 1995 Post) "Marlboro" wrote in message news:e3fd5378.0302131114.3008d6ad@posting.google.com... > > Sorry guys, > > But I think NTSC color encoding is lossless, while the other two PAL > and SECAM are lossy ( 1/3 of color info is lost in vertical direction No, NTSC and PAL are both lossy (i.e., you CANNOT accurately recover the original RGB information) due to the bandlimiting imposed on the chrominance (U and V) signals following the matrix conversion from RGB to YUV (prior to the bandlimiting, it WOULD be a "lossless" process, or at least as lossless as an analog system can be). This form of loss was tolerated, as it results in a loss of color resolution along the horizontal axis - but the eye has poorer color acuity than luminance acuity anyway. (PAL and NTSC are, in this regard, virtually identical.) Another source of color inaccuracy at the receiver comes from the need to precisely recover the color subcarrier phase information, and that's rarely done exactly, but it's not really a limiter on the system in theory. PAL is an improvement on NTSC in this regard, as phase errors on alternate lines supposedly cancel each other out. (In modern TVs, the difference is actually negligible.) SECAM does add a loss in the vertical axis as well, but it's no worse than what's already being given up in the horizontal and was therefore acceptable on those grounds. SECAM is an utterly different encoding system (the nickname has always been "System Essentially Contrary to the American Method"), but in practice delivers comparable performance. -- Bob M. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video, sci.electronics Message-ID: <3e51f1ad$1_2@hpb10302.boi.hp.com> References: <3e494d78$1_3@hpb10302.boi.hp.com> <3e4a9ce3_2@hpb10302.boi.hp.com> <3e4d3af0_3@hpb10302.boi.hp.com> Date: Tue, 18 Feb 2003 01:41:15 -0700 From: Bob Myers Subject: Re: NTSC on VGA Monitor - Quality? (Re: Bob Myers 1995 Post) "Marlboro" wrote in message news:e3fd5378.0302171436.3bcc56aa@posting.google.com... > Yeap, you are rite. For me, that bandlimiting is a lost to FCC. Well, it might be a loss - literally - but it was needed in order to get color TV to fit into the same space as was originally allocated to the "black and white" system. And from the standpoint of the average, modern-day TV viewer, there's really no significant loss in the visible image quality (assuming everything works right). > ideal condition, without band limit NTSC will give better picture than > SECAM? Hard to say; if you didn't band-limit the chroma components AT ALL, then in theory the RGB signals are fully recoverable. That assumes no phase errors, in addition, and no significant losses to any signals in the transmission path - so we're more and more into the realm of fantasy. But IF you can accept those, then yes, it would technically be better because you'd have no losses in the vertical direction (which SECAM forces by its very nature). > If I remember correct, there was a PAL.xxx ( some kind of version???) > that does the color cheat likes SECAM (throw away 1 component every > line), is that true? I don't recall anything like that, but it's certainly possible. I just don't see why, under the rest of the PAL transmission standards, you'd ever want to do this. -- Bob M. ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.sys.ibm.pc.hardware.video, sci.electronics Message-ID: References: <3e494d78$1_3@hpb10302.boi.hp.com> <3e4a9ce3_2@hpb10302.boi.hp.com> <8bfm4vsuv0u51d6h9t7f5euiq6bo51sknp@4ax.com> <3e4bf03c$1_3@hpb10302.boi.hp.com> Organization: Onvoy Date: Tue, 18 Feb 2003 14:19:24 GMT From: chrisv Subject: Re: NTSC on VGA Monitor - Quality? (Re: Bob Myers 1995 Post) On Thu, 13 Feb 2003 12:21:31 -0700, "Bob Myers" wrote: >Remember, a 1920 x 1080 image at 30 frames/second - >about the worst-case data rate for HDTV - represents >about almost 1.5 Gbits/second of data if it were transmitted >as 24 bit/pixel RGB. And that "worst case" is never actually realized... As I understand it, the signal is essentially low-pass filtered to 1400 (or so) horizontal, and is also filtered vertically, to avoid interlacing artifacts, giving an effective resolution of about 750x1400 (not a whole lot higher than 720p's 720x1280). Still better than what most consumer HDTV's are capable of... -- Chris ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.unix.solaris NNTP-Posting-Host: blackhelicopter.databasix.com NNTP-Posting-Date: Tue, 25 May 2004 20:56:47 +0000 (UTC) References: Message-ID: Organization: DataBasix - What, me worry? Date: Tue, 25 May 2004 16:59:18 -0400 From: Gary L. Burnore Subject: Re: Lost my old-sunMonitor "remote-control" (lives under-screen); have one? On 25 May 2004 01:39:29 -0400, dkcombs@panix.com (David Combs) wrote: > > The monitors Sun sells today have its picture-size adjusts > as buttons on the monitor itself; back in 1995 or so when > I got my then Sparcstation-5, the monitor I got with it > had its screen-adjusting control in a wee hand-held > remote-control something like the size of a credit-card; > fit into and lived in a little bin just under the screen. > > Years ago, I lost mine -- and no problem not having > it, *until* I replaced the sparc-5 with a blade-100 > (am using the same monitor -=- didn't buy a new one), > and for some reason, with the blade, a full-screen > (gnu) emacs is slightly too-big for the screen. > > > > Before I try to find out if anyone (Sun seems not to) still > sells these things, > > (My ("ancient") monitor: Sun part-num "365-1324-01" > "remote control" for it: part number: 370 15 76 3701576 ) > >, I thought I'd first ask here, to see if anyone had > one of these ancient implements (but nothing to use it on). > > Obviously, I'd pay for it, whatever's reasonable. > > Thanks! > David > > P.S. (yes, greg, I'm finally getting around to doing this!) Yes, I have several. Where would you like it sent? ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.terminals References: Message-ID: Date: Tue, 29 Jun 2004 19:46:50 +0200 From: Matthias Czapla Subject: Re: VT340 terminal faint screen problem stewart allen wrote: > > Hi all > i acquired 2 vt340 terminals: the screen for one of them comes on but is > very faint,so much that i can hardly make out what is on it. Is there any > way that it can be adjusted to be brighter or is there any website i can go > to to troubleshoot it. the other problem is related as this one does not > show any video although the indicator light shows that it is on. Of course > i use the two controls on the sides to no avail. Hi! I've recently got hold of a VT420 which was way too dark also. I was able to correct this by following the guidelines given in the VT420 service guide available from http://www.vt100.net/ There is also a "VT330 Pocket Service Guide" which is probably applicable to the VT340 too (although I don't know for sure). The basic steps necessary were: - Set front brightness to max and contrast to min - Adjust the "Screen" control, which is located inside the terminal, until the screen content almost disappears, but is still visible That made my terminal shine very bright again. Maybe the VT340 has a similar control. Regards Matthias ////////////////////////////////////////////////////////////////////////////// Newsgroups: comp.unix.solaris NNTP-Posting-Host: i528c1556.versanet.de NNTP-Posting-Date: Sat, 30 Apr 2005 00:07:13 +0000 (UTC) References: <4272459E.3020905@hotmail.com> Message-ID: <20050430020713.2a46ed0f@hel> Date: Sat, 30 Apr 2005 02:07:13 +0200 From: Barbie LeVile Subject: Re: setting screen resolution for solaris 8 (CDE) On Fri, 29 Apr 2005 16:33:02 +0200 Felix wrote: > > I got a new flat screen today. Now I have to change the screen > resolution from 1280x1024 pixels to 1600x1200. How can I do this? > > Workstation: SUNW,Ultra-60; sparc; sun4u > Opertaing System: SunOS Release 5.8 Generic_108528-21 > Windwo System: OpenWindows Version 6.4. > > I searched the Internet but didn't find a solution. > > Felix fbconfig is your friend to get a list of possible resolutions fbconfig -res \? take note of the ones with a attached 'd', those are designed for LCD displays. After setting the desired resolution, logout and in again to benefit from it. -- Barbie - Prayers are like junkmail for Jesus I have seen things you lusers would not believe. I've seen Sun monitors on fire off the side of the multimedia lab. I've seen NTU lights glitter in the dark near the Mail Gate. All these things will be lost in time, like the root partition last week. Time to die. //////////////////////////////////////////////////////////////////////////////