7-8 GPIB Operation
Front panel aspects of GPIB operation
The following paragraphs describe aspects of the front panel and remote panel that are part
of GPIB operation, including the remote operation indicator, LOCAL key, and messages.
Remote indicator and LOCAL key
When the power supply is in the remote state, the “R” character is displayed in the bottom
right corner of the display. It blinks as a solid block character. “R” does not necessarily indicate
the state of the REM line, as the instrument must be addressed to listen with REM true before
the “R” indicator turns on.
When the instrument is in remote, all front panel keys, except for the LOCAL key, are locked
out. The
LOCAL key cancels the remote state and restores local operation of the instrument.
Pressing the LOCAL key also turns off the “R” indicator and returns the display to normal if a
user-defined message was displayed.
If the LLO (local lockout) command is in effect, the LOCAL key is also inoperative.
Error and status messages
See Appendix B for a list of error and status messages associated with IEEE-488
programming. The instrument can be programmed to generate an SRQ, and command queries
can be performed to check for specific error conditions.
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