Agilent Technologies E1470A user manual Ieee 488.2 Common Commands Quick Reference

IEEE 488.2 Common Commands Quick Reference

The following table lists the IEEE 488.2 Common (*) Commands accepted by the E1470A module driver. For more information on Common Commands, see the the ANSI/IEEE Standard 488.2-1987.

					Command Description
			Command		Clears all status registers and clears the error queue.
CLS					Enable Standard Event.
	E				Enable Standard Event Query.
ES					Standard Event Register Query.
OPC?					Instrument ID Query; returns identification string of the module:
					HEWLETT-PACKARD,E1470A,B.01.00
					Causes E1470A to set bit 0 (Operation Complete Message) in the Standard Event
					Status Register when all pending operations are complete. This allows for
					synchronization between instrument and computer or between multiple instruments. For
					the E1470A, the only pending operation is the time delay (approximately 16 msec)
					provided to allow the relays to settle. If this command waits longer than about 60 msec,
					the error -240, “Hardware error” is generated.
					Operation Complete Query. The E1470A places a “1” in the output buffer when all
					pending operations are complete. For the E1470A, the only pending operation is the
					time delay (~ 16 msec) provided to allow the relays to settle. If this command waits
					longer than about 60 msec, the error -240, “Hardware error” is generated.
					Recalls the instrument state saved by *SAV.
R					Resets the module to its power-on state; Channel 0 connects to COMmon for all banks.
TST					This is equivalent to PATH x0,x00 (where x is the bank number).
		<registernumericstatevalue>
					Stores up to 10 module states.
AV					Service request enable, enables status register bits.
	R			>
TBCL<registervalu					Service request enable query.
IDNRE
					Read status byte query.
*?					Executes an internal self-test. *TST? compares the actual relay positions (by reading
					the hardware) to the specified states (by reading the software state). If the self-test
					passes, a “0” is returned. If a discrepancy occurs, the number returned is the decimal
					weighted sum of the following errors:
					1 Register 20h fails self-test. See Appendix B.
					2 Register 22h fails self-test. See Appendix B.
					4 Register 24h fails self-test. See Appendix B.
					8 Register 26h fails self-test. See Appendix B.
					16 Register 28h fails self-test. See Appendix B.
					*TST? is only valid if the module was programmed using the SCPI [ROUTe:]PATH
					command. Register writes and the DIAG subsystem will invalidate the software state
					and generate a *TST? error.
Chapter 3					RF Switch Command Reference 37