HP 3457A Service Manual page 38

Installation
ASCII CODE CHARACTER ASCII CODE CHARACTER
Listen Talk Decimal Code Listen Talk Decimal Code
sp a 00 0 Pp 16
! A 01 1 Q 17
" B 02 2 R 18
# c 03 3 s 19
$ oD 04 4 T 20
% & 05 5 U 21
& F 06 6 v 22
' G 07 ¥ Ww 23
¢ 4 08 8 x 24
) 1 09 9 y 25
* J 10 2 26
+ kK " i ( 27
b L 12 < ® 28
™ 13 = J 29
rs N 4 > ~ 30
/ C) 15 Talk Only 31*
* Address 31 sets the 3457A to the Talk Only Mode. In this mode, the 3457A will output
directly to an HP-IB printer without a controller on the bus. Address 31 is not, how-
ever, a valid HP-1B address with a controller on the bus.
Figure 2-6. HP-IB Address Codes
b. Transmit the new device address to the HP 3457A. The message required to transmit the new ad-
dress code consists of the controller's transmit command, the HP-IB interface select code, the
HP 3457A's device address and the message. As an example: typing the following into a controller
which uses HP-enhanced BASIC, would change the device address of the HP 3457A from "22" to "18".
OUTPUT 722; "ADDRESS18"
In this command statement, OUTPUT is the transmit command of the controller used; "7" is the select
code of the HP-IB interface; "22" is the present address of the HP 3457A and "ADDRESS18" is the
message to change the instrument address to 18.
2-25. INSTALLATION OF OPTIONS
2-26. The HP 3457A is shipped from the factory with the Rear Terminal Assembly installed. Optional
Plug-In Assemblies are packaged separately and must be configured and installed by the customer. Each
Plug-In Assembly includes a wiring block and two-piece strain relief housing for making external
connections.
2-27. The following paragraphs provide information necessary to configure and install Optional Plug-In
Assemblies HP 44491A or HP 44492A.
2-6
To prevent personal injury, disconnect all external input connections to the HP 3457A
before removing or installing the Rear Terminal Assembly or Optional Plug-In Assembly.
3457A