April 2018
47
FPM-8220
*SRE?
Common
Service Request Enable Query
Device
Dependent
Front Panel
Action
Returns the enabled bits in the Service Request Enable Register.
Parameters
None.
Notes
The response is the sum of the enabled bits and must be a value between 0 and 255.
Refer to Figure 3.5 in Chapter 3 for a complete description of the Status Byte and Service Request
Enable Register.
Examples
“*SRE?” –response: “136” specifies that the device condition summary and error available bits are
enabled.
*STB?
Common
Status Byte Query
Device Dependent
Front Panel
Action
Returns the value of the Status Byte Register.
Parameters
None.
Notes
The response is the sum of the enabled bits and must be a value between 0 and 255.
Refer to Figure 3.5 in Chapter 3 for a complete description of the Status Byte and Service Request
Enable Register.
Examples
“*STB?” –response: “200” specifies that the device condition summary, master status summary and
error available bits are enabled.
*TST?
Common
Self Test
Device Dependent
Front Panel
Action
Performs an internal self-test, then reports results.
Parameters
None.
Notes
Response 0 = test completed with no errors.
Response non-zero = test not completed or completed with errors.
Examples
“*TST?” –response: “0” means test completed without errors.
*WAI
Common
Wait to Continue
Device Dependent
Front Panel
Action
Prevents the instrument from executing any further commands until OPC (operation complete) status
is true.
Parameters
None.
Notes
This command can be used to make the instrument wait until an operation is complete before
continuing.
Care should be taken to set the GPIB time-out appropriately for use with the *WAI command. After
this command (or the Delay) command is sent, the instrument may receive up to 20 more commands
before the wait period is over.
Examples
“*WAI” –action: wait until OPC status is true.
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