Agilent Technologies E1300B, E1301B, 75000 SERIES B user manual Output 70900*SRE?, Print a

*SRE? Status Register Enable Query. Returns the weighted sum of all enabled (unmasked) events (those enabled to assert SRQ) in the Status Byte Register.

Example	10 OUTPUT 70900;"*SRE?"	Sends Status Register Enable
		query
	20 ENTER 70900;A	Places response in variable
	30 PRINT A	Prints response

40END

*STB? Status Byte Register Query. Returns the weighted sum of all set bits in the Status Byte Register. Refer to "The Status Byte Register" earlier in this chapter for a table showing the contents of the Status Byte Register.

Comments	You can read the Status Byte Register using either the *STB? command or an
	GPIB serial poll (IEEE 488.1 message). Both methods return the weighted sum
	of all set bits in the register. The difference between the two methods is that
	*STB? does not clear bit 6 (Service Request); serial poll does clear bit 6. No
	other status byte register bits are cleared by either method with the exception of
	the Message Available bit (bit 4) which may be cleared as a result of reading the
	response to *STB?.
Example	10 OUTPUT 70900;"*STB?"	Sends Status Byte Register
		query
	20 ENTER 70900;A	Places response in variable
	30 PRINT A	Prints response

40END

*TRG Trigger. Triggers an instrument when the trigger source is set to bus (TRIG:SOUR BUS command) and the instrument is in the Wait for Trigger state.

*TST? Self-Test. Causes an instrument to execute an internal self-test and returns a response showing the results of the self-test. A zero response indicates that self-test passed. A value other than zero indicates a self-test failure or error.

Example	10 OUTPUT 70900;"*TST?"	Execute self-test, return
		response
	20 ENTER 70900;A	Places self-test response in
		variable
	30 PRINT A	Prints response

40END

*WAI Wait-to-continue. Prevents an instrument from executing another command until the operation caused by the previous command is finished (sequential operation). Since all instruments normally perform sequential operations, executing the *WAI command causes no change to the instrument’s operation.

System Instrument Command Reference 7-71