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Using GPIB, RS-232
D-2 GB1400 User Manual
Interface Functions
The GB1400 is configured as a talker/listener. No controller functions are
implemented. As described in the IEEE-488 standards, the GB1400 supports the
following implementation:
SH1 Complete source handshake
AH1 Complete acceptor handshake
T6 Basic talker; serial poll, no talk only, unaddressed if
addressed to listen, no extended talker
L4 Basic listener, no listen only, unaddressed if addressed to
talk, no extended listener
SR1 Complete service request
RL1 Complete remote/ local capability including local lockout
PP0 No parellel poll capability
DC1 Complete device clear capability
DT0 No device trigger capability
C0 No controller capability
E2 Tri-state drivers used on DI0 lines for maximum data
transfer rate
GPIB Connector Pin-Outs
The GB1400 uses the standard D-type 24 pin GPIB connector located on the rear
panel. All signals and pins conform to the standard GPIB pin out protocol.
Programming GPIB Remote Commands
There are two types of remote commands for the GB1400:
• Set commands (commands)
• Queries commands (queries
The set commands force the GB1400 to take a specific action. The query
commands direct the GB1400 to return status information. The controller sends
commands to the GB1400 as strings terminated at EOI or EOI/LF characters.
These command lines can contain either a single command or multiple commands.
The command line may contain both queries and commands. Each individual
command within the command line must be separated by semi-colons (;),
parameters must be separated by comma (,). Hexadecimal parameters must be
preceded by a ‘#H’.
Each query command sent to the GB1400 will return one response. The response
may contain multiple response units (separated by semi-colons), however only one
EOI/LF response termination is sent by the GB1400 to the controller for each