This chapter provides information used to unpack, pack, and install the VT102. The installation procedure describes how to select the input voltage switch and fuse. The chapter also provides a step-by-step power-up and checkout procedure.
The terminal consists of a video monitor and a detached keyboard. Figure 7-1 shows their dimensions. The following list covers the terminal's environmental and power specifications.
Temperature | 10° to 40° C (50° to 104° F) |
Relative humidity | 10 to 90 percent with a maximum wet bulb temperature of 28° C (82° F) and a maximum dew point of 2° C (36° F) noncondensing |
Input voltage | 99 to 128 Vac (115 V setting) 198 to 256 Vac (230 V setting) or 87 to 107 Vac (100 V setting) 222 to 268 Vac (250 V setting) |
Power consumption | 70 W |
Power receptacle | Nonswitched, grounded |
When installing the terminal, make sure that all power and signal cables are free from stress, sharp bends, or obstructions. Also, make sure to provide access to monitor controls on the back of the terminal.
Several ventilation openings prevent the terminal from overheating. Do not block the air flow around these openings by placing objects on top of or under the terminal. Also, do not allow liquids, coins, paper clips, or other objects to enter these ventilation openings. These objects may damage the terminal.
You can place the terminal on a desk or tabletop. However, operators usually prefer the keyboard at standard typewriter-table height rather than desk height. Terminal tables and stands are available from the DIGITAL Accessories and Supplies Group (A&SG). (See Chapter 10 for more information on accessories).
Position the video monitor to avoid reflected light. The screen should face away from light sources. However, if reflected light is a problem, filter screens are available from A&SG.
For installations with static electricity problems, static mats are available from A&SG.
The terminal is packed in a carton with the following items.
Figure 7-2 shows the terminal's packaging. Unpack the terminal from the shipping carton by using the following procedure.
NOTE: All terminals are shipped with a US power cord.
NOTE: Notify the carrier and your local DIGITAL Sales Office of any damage.
Pack the terminal for shipment by using the following procedure. Figure 7-2 shows the terminal's packaging. Figure 7-3 shows power switch and cable locations.
Install the terminal by using the following procedure. Figure 7-3 shows switch and cable locations.
CAUTION: Failure to select the proper voltage range will damage the terminal.
A label over the power receptacle indicates the factory-selected input voltage range. Check this label, the voltage selection switch, and fuse for the correct voltage range. Make sure the voltage range matches your local ac power source.
Select 120 volts by performing the following procedure.
Select 220-240 volts by performing the following procedure.
NOTE: When using the 20 mA current loop option, the terminal ignores the position of the communication switches.
NOTE: Make sure the power switch is off (0) before connecting the power cord.
The terminal has ten internal communication switches to connect or disconnect modem communication lines. See Chapter 6 for more information on these communication lines. Select these switches by using the following procedure.
To select the rocker switch, press the side of the switch that corresponds to the desired selection. To select the slide switch, push the switch tab to the side that corresponds to the desired setting. Figure 7-6 shows the location of the communication switches. Figure 7-7 shows the communication lines connected (on, closed) or disconnected (off, open) by these switches.
NOTE: Always use a small-blade screwdriver or ball-point pen to change the communication switches. Never use a lead pencil.
CAUTION: You may damage the access cover by tightening the captive screws too much.
You can order communication and printer cables from A&SG. See Chapter 10 for part numbers and ordering information. Table 7-1 describes each communication cable used, and Figure 7-8 shows connection examples for each cable.
Part Number | Connector Types | Function |
---|---|---|
BC22A-10 (10 ft) |
RS-232 (female) to RS-232 (female) |
Null modem; connects terminal directly to computer or printer (6-conductor cable). |
BC22A-25 (25 ft) |
RS-232 (female) to RS-232 (female) |
Null modem; connects terminal directly to computer or printer (6-conductor cable). |
BC22B-10 (10 ft) |
RS-232 (male) to RS-232 (female) |
Extension; connects terminal to a modem (14-conductor cable). |
BC22B-25 (25 ft) |
RS-232 (male) to RS-232 (female) |
Extension; connects terminal to a modem (14-conductor cable). |
BC03M-xx (variable length) |
RS-232 (female) to RS-232 (female) |
Null modem; connects terminal directly to computer or printer. |
BC05D-xx (variable length) |
RS-232 (male) to RS-232 (female) |
Extension; connects terminal to a modem. |
BC05F-15 (15 ft) |
Mate-N-Lok™ to Mate-N-Lok |
20 mA; connects terminal with 20 mA option installed directly to computer. (Supplied with 20 mA option.) |
BC05X-xx (variable length) |
Mate-N-Lok to Mate-N-Lok |
20 mA extension |
30-10958-02 EIA 20 mA |
RS-232 (male) to RS-232 (female) and 20 mA (male) |
Connects acoustic coupler to terminal EIA or 20 mA. |
™AMP, Inc. |
A power-up self-test procedure verifies the terminal operation each time you power up. Power up and check out the terminal by using the following procedure. See Figure 7-3.
Turn the power switch on (1). The terminal automatically runs the power-up self-test. The test provides the following indications.
When the power-up self-test finds an error, the terminal provides one of the following indications.
See Chapter 9 for more information about self-test failure.