Table of Contents
Advertisement
_ _ _ _ LEAR SIEGL.ER, INC.
DATA PRODUCTS DIVISION
contains most of the video circuitry, and (3) the
flyback assembly. The monitor display screen
measures 12 inches diagonally.
1.5 SPECIFICATIONS
The ADM SA specifications are listed in Table I-
I, page 1-6.
1.6 CHARACTER FORMAT (Figure 1-3)
The standard ADM 3A character set contains
96
ASCII characters. Control characters are not
displayed when they are generated. The
displayable
96
ASCII characters consist of upper
and lower case letters, numerics, and punctuation.
1.7 WORD STRUCTURE
The ADM 3A transmits and receives serial
asynchronous data in a '9-bit, 10-bit, or II·bit
format in the folloV\"1ng sequence:
• One start bit
• Seven or eight data bitE
• One or no parity bit
• One or two stop bitE
Parity selection (odd, even, or no parity) is
permitted with both the 7·bit or B-bit data word. If
an B-bit data word is selected, then bit number
eight can
be
designated to be either HI" or ICO."
Parity selection and the value of bit number eight
are selected in the set-up mode. Refer to Section
III.
1.8 ANSWERBACK PROGRAMMING
The ADM 3A provides a 32·byte, user-
programmable, answerback message stored in
volatile memory. Answerback with NVM is
optional. The message is transmitted in response
to an ENQ code from the host computer or by
pressing the
I
HERE IS
I
key for display on the
terminal if
it
is in half·duplex mode. The
answerback
is
programmable
through
the
' [ CTRL(AJ in the set-up mode. Refer to Section
III.
1.9 DATA ENTRY AND OVERFLOW
New data enters on progressive lines, from top to
bottom. When the cursor is on the bottom line, line
feed causes upward scrolling of the entire display
1-4
page, \\T}}en overflow occurs, the entire display
page is scrolled upward one line as new data
enters at the beginning of the new bottom line.
If
auto newline is not enabled in set-up mode, a
CR/LF must be sent.
1.10 KEYBOARD LAYOUT OPTIONS
Four character formats, which are selectable via
the set·up mode, are available ",nth the ADM 3A
for the following language sets: USASCII·
QWERTY,
UKASCII·QWERTY, German·
Q\\TERTZ, and French·AZERTI:.
1.11 OPTIONAL
FEATURI~S
The standard ADM 3A can be further equipped
with several options.
1.11.1 20mA Current Loop On
Extension Port
This option permits the extension port to be used
in a current loop application.
1.11.2 20mA Current Loop On Modem
Port
This option permits the modem port to be
U8ed
in
a
current loop application.
1.11.3 RS·422 Interface
O~.tlon
This option permits the modem port to
be
used
in
an RS·422 application.
1.11.4 230 VAC
For this option, a 230-volt tlrans form er and
appropriate power cord are provided to make the
ADM 3A suitable for 230-volt operation.
1.11.5 Green Phosphor Display
A green display screen is available with the ADM
3A. This option has a longer life than thE
8tandard white screen.
1.11.6 Answerback Storage (NVM)
The ADM SA incorporates fSLcilities to add
answerback NVM as an option. This provides thf
capabilities to store up to
8
32-character message
in non·volatile memory. Answerback
~~lttf
may
be ordered with the terminal or as an add-on, plug·
in component.
Advertisement
Table of Contents
