C O M M A N D R E F E R E N C E
GPIB Command Reference
40
LDC-3926339
C H A P T E R
4
GPIB Command Reference
This section presents the module commands for both local and remote operation
of the LDC-3926339, listed in alphabetical order. Sub-sections for each path are
presented, listing the commands which are legal for that path.
Action
Adjusts the internal analog to digital (A/D) converter to reference points, then reports results.
Results
Zero = OK
Non-zero = calibration error
Note
A/D referencing is performed each 10 minutes of inactive time.
Example
*CAL?
Action
Clears status event registers: Event Status, Event Status Enable, and Error Queue.
Note
Useful to clear registers before enabling service requests (SRQ).
Example
*
CLS
Action
Enables bits in the standard event status enable register.
Response
The value must be between 0 and 255.
Notes
Bit 5 of the status byte register is set if any enabled conditions are true.
Setting bit 0 allows you to generate service requests from overlapped commands as previous oper-
ations complete. This may be useful for ensuring that an operation is complete before starting a
measurement.
*CAL?
*CLS
*ESE <nrf value>
Event Status Enable
Numeric
Value:
Operation complete
Query error
Device dependent error
Execution error
Command error
User request
Power ON
= Unused bits
1
4
8
16
32
64
128
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