Installing and Using the VT320 Video Terminal

4 Set-Up

Overview

The VT320 has seven set-up screens that list the settings for the terminal's operating features.

Set-Up Directory
Display
General
Communications
Printer
Keyboard
Tab

You can display these screens and change settings from the keyboard. This chapter describes the set-up screens and how to change settings.

Most set-up features are initially set to a factory-default setting that works with most Digital systems. The VT320 has these factory-default settings permanently stored. If you change settings, you can use set-up to reset the terminal to the factory-default settings.

You can also select and save settings to match your host system. The VT320 saves your selections in nonvolatile memory, along with the factory-default settings. When you shut power off, you do not lose your saved settings.

You can change all set-up features from the keyboard. Your host system can also change some settings, as described in the VT320 Programmer Reference Manual. See Appendix B to order other VT320 manuals.

Entering and Leaving Set-Up

To enter or leave set-up, you press the Set-Up key (the third key from the left on the top row of the main keypad). When you enter set-up, any text on the screen disappears, and the Set-Up Directory appears. When you leave set-up, the text that was on the screen reappears.

The Set-Up Directory lists all the set-up screens. You can select any set-up screen from the Set-Up Directory. You can also move from screen to screen. You can return to the Set-Up Directory from any set-up screen. You can only display one set-up screen at a time.

Set-Up Screen Format

The terminal displays set-up screens on the bottom third of the screen. Figure 4-1 shows the set-up screen format.

How to Change Settings

You use the arrow keys to move the set-up cursor to a particular feature on a set-up screen. Most features have two or more possible settings. You use the Enter key to change the setting of the feature highlighted by the cursor. Each time you press Enter, the setting changes. Depending on the feature, the change takes effect immediately or when you leave set-up.

Some features are action fields. When you move to an action field and press the Enter key, the terminal performs the action. For example, six of the set-up screens have an action field that reads To Directory. When you move to this feature and press Enter, the Set-Up Directory screen replaces the current screen.

Example
This example shows how to change the screen display from 80 to 132 columns.

Press Set-Up to enter set-up. The Set-Up Directory appears. The cursor is on the Display field.
Press Enter. The Display Set-Up screen appears.
Use the arrow keys to move the cursor to "80 Columns". Press Enter to change the setting to "132 Columns".
Press Set-Up to leave set-up.

When you change a feature setting, the VT320 uses that setting until you turn the terminal off or change the setting again. To save a new setting, read the next section.

How to Save Your Settings

You can save the feature settings you select. When you do, the VT320 automatically uses your settings each time you turn the terminal on. In this way, you can set the VT320 to your computing environment.

You use the Save feature to save your settings. After you change settings to match your host computer, return to the Set-Up Directory. Use the arrow keys to move the cursor to the Save feature, then press Enter. The VT320 saves all current set-up settings and displays a "Done" message on the status line. The terminal uses these settings until you or an application save a new set of settings.

If you temporarily change some settings without saving them, you can Recall your last set of saved settings from the Set-Up Directory.

Status Line

The status line shows you the current position of the screen cursor, the printer status, and the modem status (if used). Table 4-1 describes the three status line fields, from left to right. The status line appears on line 25 at the bottom of the screen. If you display the status line outside of set-up, the line appears in reverse video.

By default, the status line only appears in set-up. You can use the Status Display feature in the Display Set-Up screen to control the status line. The feature has three settings.

No Status Display (default)	The status line appears only in set-up or when selected by the host system.
Indicator	The status line appears at all times.
Host-Writable	The host system can write messages in place of the status line.

You can display the indicator status line in English, French, or German. Use the Set-Up Language feature in the Set-Up Directory screen to select the language.

Table 4-1 Status Line Messages
Field	Value	Meaning
1		Cursor position
1	(l,c)	The cursor is currently at line l, column c.
2		Printer status
	Ready	The printer is ready.
	Not Ready	The printer is not ready.
	None	No printer is connected.
	Auto	The terminal is in auto print mode.
	Controller	The terminal is in printer controller mode. See Chapter 6.
3		Modem status*
	DSR	The modem is ready to send or receive data.
	No DSR	The modem is not ready to send or receive data.
* This field appears only when the VT320 has a modem connected.

A Guide to Set-Up Features

Table 4-2 lists the features available on each set-up screen.

Table 4-2 A Guide to Set-Up Features
Set-Up Directory	Display Set-Up	General Set-Up
Display Set-Up General Set-Up Communications Set-Up Printer Set-Up Keyboard Set-Up Tab Set-Up On-Line/Local Clear Display Clear Communications Reset Terminal Recall Saved Settings Save Settings Set-Up Language Keyboard Language Factory Defaults Exit Set-Up	To Next Set-Up To Directory 80/132 Columns Display/Interpret Controls Auto Wrap Smooth/Jump Scroll Light/Dark Screen Cursor Cursor Style Status Display	To Next Set-Up To Directory Terminal Mode Terminal ID UDK Lock User Features Lock Character Set Mode Keypad Mode Cursor Key Mode New Line User-Preferred Set
Communications Set-Up	Printer Set-Up	Keyboard Set-Up
To Next Set-Up To Directory Transmit Speed Receive Speed XOFF Data Bits/Parity Stop Bits Local Echo Host Port Selection Disconnect Transmit Rate Limit Auto Answerback Answerback = Concealed	To Next Set-Up To Directory Transmit/Receive Speed Printer to Host Comm Print Mode XON/XOFF Data Bits/Parity Stop Bit Print Page Printed Data Type Print Terminator	To Next Set-Up To Directory Typewriter/D.P. Keys Caps/Shift Lock Auto Repeat Keyclick Margin Bell Warning Bell Break Compose Key <x] DEL/BS ,, and .. Keys <> Key `~ Key
	Tab Set-Up
	To Next Set-Up To Directory Clear All Tabs Set 8 Column Tabs Tab Fields and Ruler

Set-Up Directory Screen

This screen always appears when you enter set-up. You can select any set-up screen from the Set-Up Directory. You can also perform such functions as saving and recalling feature settings. Table 4-3 describes the Set-Up Directory features. All features, except On-Line/Local, are action fields.

Table 4-3 Set-Up Directory Features
Feature	Settings*	Function
Display	Display	These fields display the selected set-up screen. For example, Display selects the Display Set-Up screen.
General	General
Comm	Comm
Printer	Printer
Keyboard	Keyboard
Tab	Tab
On-Line/Local		Selects whether or not the VT320 can communicate with the host system.
	On-Line	Lets the VT320 communicate with the host system.
	Local	Puts the host system on hold. The VT320 sends keyboard data to the screen only.
Clear Display	Clear Display	Clears the screen when you leave set-up.
Clear Comm	Clear Comm	Clears communication as follows.
Stops any print operation. Stops any escape sequence, control sequence, or device control string (DCS). Stops printer controller mode and returns to normal print mode.		Clears the keyboard buffers. Clears the receive buffer. Clears the transmit buffer. Sends an XON signal to the host. Resets the XOFF received flags at the printer and host.
Reset Terminal	Reset Terminal	Resets many VT320 operating features to a default setting used by most application programs. The screen, communication, character set modes, and user-defined keys are not affected. See Chapter 13 of the VT320 Programmer Reference Manual.
Recall	Recall	Sets all set-up features to their saved values. Clears the screen.
NOTE: If you use a modem, Recall disconnects communication with the host system.
Save	Save	Saves all current feature settings in all set-up screens.
Set-Up=_____	English Francais Deutsch	Selects the language used to display set-up screens.
_____ Keyboard		Lets you select one of the following languages or dialects to match your keyboard.
	North American British Flemish Canadian (French) Danish Finnish German/Austrian Dutch Italian Swiss (French) Swiss (German) Swedish Norwegian French/Belgian Spanish Portuguese
Default	Default	Sets all set-up features to their factory-default settings. Clears the screen and returns the cursor to the upper-left corner.
NOTE: If you use a modem, Default may disconnect communication with the host system.
Exit	Exit	Lets you leave set-up.
* Default settings are in bold type.

Display Set-Up Screen

This screen lets you select display features such as 80 or 132 columns, smooth or jump scrolling, and a block or underline cursor. Table 4-4 describes the Display Set-Up features.

Table 4-4 Display Set-Up Features
Feature	Settings*	Function
To Next Set-Up	To Next Set-Up	Displays the General Set-Up screen.
To Directory	To Directory	Displays the Set-Up Directory.
_____ Columns	80 Columns	Selects an 80 or 132-column screen display for text. Takes effect in set-up and clears the screen.
_____ Columns	132 Columns
_____ Controls		Selects whether to execute or display codes from the host system. This feature is useful for debugging programs.
	Interpret Controls	Executes control codes, but does not display them.
	Display Controls	Displays control codes as characters, but does not execute them.
Auto Wrap		Selects whether or not text automatically wraps to the next line when you reach the right margin.
	No Auto Wrap	When the cursor reaches the margin, the VT320 displays each new character in the last column of the line. Each new character overwrites the previous character.
	Auto Wrap	When the cursor reaches the margin, the VT320 displays new characters on the next line.
_____ Scroll		Selects how fast lines appear on the screen.
	Smooth Scroll	Limits the speed at which new lines appear on the screen, producing a smooth, steady scroll.
	Jump Scroll	Displays new line as fast as they are received, producing a jump scroll.
_____ Text, _____ Screen		Selects a normal or reverse video display.
	Light Text, Dark Screen	Selects a normal screen display (light text on dark background)
	Dark Text, Light Screen	Selects a reverse video display (dark text on light background).
Text Cursor	Cursor	Selects whether or not to display the text cursor.
Text Cursor	No Cursor	Selects whether or not to display the text cursor.
_____ Cursor Style	Block	Selects a blinking block or blinking underline cursor.
_____ Cursor Style	Underline	Selects a blinking block or blinking underline cursor.
_____ Status Display		Selects how and when to display the status line at the bottom of the screen.
	No Status Display	The status line only appears when you are in set-up.
	Indicator	The status line appears at all times.
	Host Writable	Host applications can write messages in place of the status line.
* Default settings are in bold type.

General Set-Up Screen

This screen lets you select the terminal's general operating features, such as operating mode and multinational character sets. Table 4-5 describes the General Set-Up features. See Chapter 2 for more on character sets.

Table 4-5 General Set-Up Features
Feature	Settings*	Function
To Next Set-Up	To Next Set-Up	Displays the Communications Set-Up screen.
To Directory	To Directory	Displays the Set-Up Directory screen.
_____ Mode _____		Selects the terminal's operating mode. Lets the VT320 work as a VT200 series, VT100 series, or VT52 terminal.
	VT300 Mode, 7-Bit Controls	Lets the terminal use all VT320 features. This mode supports 8-bit graphic display characters and 7-bit control characters. Select this mode for all VT200 applications. Digital recommends this mode for most applications.
	VT300 Mode, 8-Bit Controls	Lets the terminal use all VT320 features in an 8-bit environment with 8-bit control characters. Select this mode for all VT200 applications that use 8-bit control characters. This mode is the most efficient, but not yet supported by many applications.
	VT100 Mode	Lets the terminal run applications that require strict VT100 compatibility. In general, use VT300 Mode, 7-Bit Controls if possible.
	VT52 Mode	Lets the terminal run VT52 applications.
Terminal ID	VT320 ID VT100 ID VT101 ID VT102 ID VT220 ID	Selects the device attributes response (terminal ID). This response lets the host system know specific operating attributes of the terminal.
NOTE: If you use the VMS operating system, version 4.6 or later can recognize VT320 terminals. If your operating system does not recognize your VT320, select the "VT220 ID" setting.
User Defined Keys _____		Selects whether or not the host system can change user-defined key (UDK) definitions.†
	Unlocked	Allows the host to define UDKs.
	Locked	Prevents the host from defining UDKs.
User Features _____		Selects whether or not the host system can change your settings for the following features. Auto Repeat Smooth/Jump Scroll Light/Dark Screen Tab stops Keyboard lock
	Unlocked	Lets the host change user features.
	Locked	Prevents the host from changing features.
NOTE: Some applications expect to control the above user features. For these applications, set User Features _____ to "Unlocked".
Character Set Mode		Selects the type of character sets to use, 8-bit multinational sets or 7-bit national sets.
NOTE: If you set the Keyboard feature in the Set-Up Directory to "North American", you cannot select "7-Bit Characters". If you set the operating mode to "VT100", you cannot select "8-Bit Characters".
	8-Bit Characters	Supports the 8-bit DEC Multinational or ISO Latin-1 set. Both include the 7-bit ASCII set. You select the specific 8-bit set with the User-Preferred Character Set feature in this screen.
	7-Bit Characters	Makes the VT320 use one of the 7-bit national replacement character sets (NRCs). You select the NRC set with the Keyboard feature in the Set-Up Directory screen.
_____ Keypad		Selects whether the numeric keypad keys send the characters on their keycaps or programming functions.
	Numeric	The keypad keys send the characters on their keycaps (using ASCII character codes).
	Application	The keypad keys send programming functions defined by an application.
NOTE: If you set the Keypad feature above to "Numeric", the Enter key works like the Return key.
_____ Cursor Keys		Selects whether the arrow keys control cursor movement or send application control functions.
	Normal	The arrow keys move the cursor up, down, left, right (using ANSI cursor control sequences).
	Application	The arrow keys send application control functions.
_____ New Line		Selects whether or not the Return key moves the cursor to a new line.
	No New Line	The Return key sends a carriage return only.
	New Line	The Return key sends a carriage return and a line feed.
NOTE: When you set the Keypad feature to "Numeric", the New Line feature affects the Enter key the same as it does the Return key.
User-Preferred Character Set		When Character Set Mode is set to "8-Bit Characters", selects the DEC Multinational set or ISO Latin-1 set for use. The difference between the two sets is their supplemental character set, called a user-preferred set.
	UPSS DEC Supplemental	Selects the DEC Multinational character set. This set is compatible with Digital applications.
	UPSS ISO Latin-1	Selects the International Standards Organization (ISO) character set.
* Default settings are in bold type.
† You can define the function of some top-row keys by using programming sequences. See Chapter 10 of the VT320 Programmer Reference Manual.

Communications Set-Up Screen

This screen lets you select features that affect how the VT320 communicates with your host system. The default settings work with most of Digital's computer systems. Table 4-6 describes the Communications Set-Up features.

Table 4-6 Communications Set-Up Features

Feature

Settings*

Function

To Next Set-Up

Displays the Printer Set-Up screen.

To Directory

Displays the Set-Up Directory screen.

Transmit= _____†

Selects the baud rate the VT320 uses to send data to the host system.

75
110
150
300
600
1200
2400
4800
9600
19200

The terminal's transmit speed must match the host's receive speed. However, the VT320 can transmit at one speed and receive at another.

Receive= _____†

Receive=Transmit
75
110
150
300
600
1200
2400
4800
9600
19200

Selects the baud rate the VT320 uses to receive data from the host system.

The terminal's receive speed must match the host's transmit speed. However, the VT320 can transmit at one speed and receive at another.

XOFF _____†

XOFF at 64
XOFF at 128
No XOFF

Selects how many characters the VT320 can receive before sending the host system an XOFF signal to stop sending data.

For example, "XOFF at 64" means the VT320 sends XOFF to the host when the input buffer contains 64 characters. See Appendix C.

___ Bits, ___ Parity†

8 Bits, Even Parity
8 Bits, Odd Parity
8 Bits, No Parity
8 Bits, Even Parity, No Check
8 Bits, Odd Parity, No Check
7 Bits, Even Parity, No Check
7 Bits, Odd Parity, No Check
7 Bits, No Parity
7 Bits, Even Parity
7 Bits, Odd Parity
7 Bits, Mark Parity
7 Bits, Space Parity

Selects the character format used to communicate with the host system. See Appendix B in the VT320 Programmer Reference Manual.

___ Stop Bit†

Selects the number of stop bits (1 or 2) used in the character format.

1 Stop Bit

Digital recommends using 1 stop bit for most applications.

2 Stop Bits

Use this setting for baud rates under 300.

Local Echo

Selects whether or not to send the characters you type directly to the screen.

No Local Echo

Sends keyboard data to the host. The host may or may not send the data back to the screen.

Local Echo

Sends keyboard data to the screen and to the host.

Host Port Selection

Selects which cable connector you can use on the rear of the VT320 to connect to the host system.

RS232, Data Leads Only

Selects the 25-pin RS232 connector. Use this setting if you do not have a modem.

RS232, Modem Control

Selects the 25-pin RS232 connector. Use this setting if you have a modem requiring EIA modem control.

DEC-423, Data Leads Only

Selects the 6-pin DEC-423 connector. Use this setting if you do not have a modem.

DEC-423, Modem Control

Selects the 6-pin DEC-423 connector. Use this setting if you have a modem.

NOTE: The next feature only works when you use the "RS232, Modem Control" setting above.

Disconnect, ___ Delay

When modem control is in effect, selects the time delay the VT320 uses before disconnecting from the communication line. A disconnect occurs when the VT320 no longer detects the received line signal detection (RLSD) signal.

Disconnect, 2 s Delay

This setting is for all countries except the United Kingdom.

Disconnect, 60 ms Delay

This setting is used in the United Kingdom.

______ Transmit

Selects a limited or unlimited terminal transmit speed.

Limited

Limits the terminal to sending 150 to 180 characters per second, regardless of the baud rate selected by the Transmit feature. This reduces the interrupt burden on the operating system.

Unlimited

Selects an unlimited terminal transmit speed.

Auto Answerback

Auto Answerback
No Auto Answerback

Selects whether or not to send the answerback message to the host system after a communication line connection.

Answerback =

Lets you type an answerback message of up to 30 characters. When you select this feature, the VT320 displays the prompt "Enter Answerback =" on the status line.

You can conceal your message with the Conceal feature in this screen.

NOTE: The VT320 sends this message to the host system when (1) you type Ctrl-Break, or (2) the host requests the message by sending an ENQ character. Host requests do not affect screen data or require a user response.

Concealed

Selects whether or not the VT320 can display the answerback message in set-up.

Not Concealed

The VT320 can display the answerback message in set-up.

Concealed

The VT320 cannot display your answerback message. You cannot reset this feature to "Not Concealed", except by entering a new answerback message.

* Default settings are in bold type.

† Does not apply to the printer port. See the Printer Set-Up screen.

Printer Set-Up Screen

This screen lets you set up the VT320 to work with different types of printers. Table 4-7 describes the Printer Set-Up features.

Table 4-7 Printer Set-Up Features
Feature	Settings*	Function
To Next Set-Up	To Next Set-Up	Displays the Keyboard Set-Up screen.
To Directory	To Directory	Displays the Set-Up Directory.
Speed= ____	75 110 150 300 600 1200 2400 4800 9600 19200	Selects the baud rate the VT320 uses to send data to a printer.
Printer to Host Comm		Selects whether or not the printer can send data to the host system.
	No Printer to Host	Data can only move from host to printer.
	Printer to Host	Data can move from host to printer, and from printer to host.
NOTE: XON/XOFF flow control operates independently between the terminal and printer, and between the printer and host.
Print Mode		Determines when and how printing takes place.
	Normal	Lets you start print functions from the keyboard.
	Auto Print	Prints the current line of text when the VT320 receives a line feed, form feed, or vertical tab from the host.
	Controller	Lets the host send data directly to the printer, without displaying the data on the screen.
XOFF		Selects whether or not to use XON/XOFF flow control with the printer. See Appendix C.
	XOFF No XOFF
___ Bits, ___ Parity		Selects a character format to match the printer's.
	8 Bits, No Parity 8 Bits, Even Parity 8 Bits, Odd Parity 7 Bits, No Parity 7 Bits, Mark Parity 7 Bits, Space Parity 7 Bits, Even Parity 7 Bits, Odd Parity
___ Stop Bit	1 Stop Bit 2 Stop Bits	Selects the number of stop bits that match the printer's character format.
Print _______		Selects how much of the screen to print when you press the Print Screen key.
	Full Page	Prints the full screen.
	Scroll Region	Prints only the scrolling region.
Printed Data Type		Lets you select the VT320 character sets that match the Digital printer's character sets.
	National Only	Use with a printer that supports the ASCII set (in "8-Bit" multinational mode) or the current national set (in "7-Bit" national mode). Examples: LA34, LA36, and LA120 printers.
	National and Line Drawing	Use with a printer that supports the VT100 line drawing set and (1) the ASCII set (in "8-Bit" multinational mode), or (2) the current national set (in "7-Bit" national mode). Example: LA100.
	Print All Characters	Use with a printer that supports the multinational and line drawing sets. Example: LA50.
Print Terminator	No Terminator Terminator = FF	Selects whether or not the VT320 sends a form feed (FF) at the end of a print operation.
* Default settings are in bold type.

Keyboard Set-Up Screen

This screen lets you control the function of several keys: Lock, Break, Compose, <x], . (period), , (comma), < >, and ~. You can also control the keyboard's margin bell, warning bell, and keyclick.

The "_____ Keys" feature lets you select between standard typewriter characters and data processing characters. This feature affects keys with characters on the right half of their keycaps. Data processing characters allow European model keyboards to use characters that appear as standard typewriter characters on the North American/United Kingdom keyboard.

Table 4-8 describes the Keyboard Set-Up features.

Table 4-8 Keyboard Set-Up Features
Feature	Settings*	Function
To Next Set-Up	To Next Set-Up	Displays the Tab Set-Up screen.
To Directory	To Directory	Displays the Set-Up Directory.
______ Keys		Selects the characters sent by keys that have three or more characters on their keycap.
	Typewriter	Selects the characters on the left half of the keycaps.
	Data Processing	Selects the characters on the right half of the keycaps.
NOTE: When you select "Data Processing" keys, the keyboard can only send ASCII characters. For keys with three or more characters, you cannot use the characters on the left half of the keycap.
______ Lock		Selects the function of the Lock key (Chapter 3).
	Caps Lock	After you press Lock down, the alphabetic keys send their uppercase character. Other keys still send the bottom character on their keycap.
	Shift Lock	After you press Lock down, all keys send the top character on their keycap.
Auto Repeat	Auto Repeat No Auto Repeat	Selects whether or not a key sends its character repeatedly when you hold the key down.†
Keyclick	Keyclick No Keyclick	Selects whether or not keys make a sound when you press them.
Margin Bell	Margin Bell No Margin Bell	Selects whether or not the VT320 makes a bell tone when the text cursor approaches the right margin.
Warning Bell	Warning Bell No Warning Bell	Selects whether or not the VT320 makes a bell tone when (1) operating errors occur, or (2) you press Ctrl-G.
Break	Break No Break	Selects whether or not the Break key sends a break signal (Chapter 3). You can end communication with a modem by pressing Shift-Break, regardless of the Break setting.
Compose	Compose No Compose	Selects whether or not the Compose Character key works (Chapter 5).
Backarrow Key		Selects whether the <x] key sends a delete (DEL) character or a backspace (BS) character.
	<x] Delete	Pressing <x] sends a DEL character.
	<x] Backspace	Pressing <x] sends a BS character.
,, and .. Keys		Selects which characters the comma and period keys send.
	,, and .. Keys	The comma key sends a comma when shifted or unshifted. The period key sends a period when shifted or unshifted.
	,, and .. Keys Send ,< and .>	The comma key sends a comma when unshifted and a < character when shifted. The period key sends a period when unshifted and a > character when shifted.
<> Key‡		Selects which characters the angle bracket key sends.
	<> Key	The angle bracket key sends a < when unshifted and a > when shifted.
	<> Key Sends `~	The angle bracket key sends a ` when unshifted and a ~ when shifted.
`~ Key‡		Selects which character the tilde key sends.
	`~ Key	The tilde key sends a ` when unshifted and a ~ when shifted.
	`~ Key Sends ESC	The tilde key sends an escape (ESC) character.
* Default settings are in bold type.
† The following keys never repeat: Hold Screen, Print Screen, Set-Up, Return, Break, Lock, and Ctrl.
‡ This feature applies only to the North American/United Kingdom and Dutch keyboards.

Tab Set-Up Screen

This screen lets you set the number of tab stops on a line. When you press the Tab key outside of set-up, the cursor advances to the next tab stop on the line. Table 4-9 describes the Tab Set-Up features.

There is one tab stop field for each column on the screen. You can use a screen display that is 80 or 132 columns wide. See the Columns feature in the Display Set-Up screen.

You can use the arrow keys or Tab key to move the set-up cursor to any tab stop field. Press the Enter key to place a T in a blank field or erase a T from that field. This screen shows the default tab stop settings.

Table 4-9 Tab Set-Up Features
Feature	Settings*	Function
To Next Set-Up	To Next Set-Up	Displays the Display Set-Up screen.
To Directory	To Directory	Displays the Set-Up Directory.
Clear All Tabs	Clear All Tabs	Clears all tabs previously set.
Set 8 Column Tabs	Set 8 Column Tabs	Automatically sets tabs every 8 columns, starting with column 9.