GPIB Functions
The following is a list of the various functions
9400A’s rear panel GPIB connector:
AHI
SHI
L4
T5
SRI
RL2
DCI
DTI
PP1
CO
E2
Complete Acceptor Handshake
Complete Source Handshake
Partial Listener Function
Complete Talker Function
Complete Service Request Function
Partial Remote/Local Function
Complete Device Clear Function
Complete Device Trigger
Parallel Polling: remote configuration
No Controller Functions
Tri-state Drivers
provided via the
7.4
GPIB and RS-232-C Command Format
7.4.1 Introduction
All the remote control commands apply equally to communication via the
GPIB and RS-232-C ports. (Note that GPIB commands should not be used
when Option 0P02 is not fitted in the 9400A.) Certain functions,
however, which are part of the GPIB standard (such as Device Clear or
Group Execute Trigger) must be implemented as separate commands for the
RS-232-C interface (see Section 7.6.10). The command syntax
compatible with IEEE Recommended Practice for Code and Format
Conventions (IEEE Standard 728-1982).
In GPIB, the predefined control commands, such as Device Clear, Group
Execute Trigger, Set Remote or Set Local, are part of the device driver
commands. Therefore the 9400A only has English-like commands for these
functions in RS-232-C inferfacing applications. The user must consult
the manual for his GPIB-interface driver in order to determine the form
of these special commands.
Commands are formed of easy-to-read, unambiguous English words, with
abbreviations (typically 2 to 4 characters) being used to achieve
higher throughput. Short and long formats may be freely substituted for
one another.
The execution of certain commands depends on whether the 9400A is in
the REMOTE or LOCAL state.
7-3
Remote Operations
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