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IEEE 488.2 Common Commands
The following table lists the IEEE 488.2 Common (*) Commands that can
be executed by the Microwave Switch modules. The operation of some of
these commands is described in Chapter 3 of this manual. For more
information on Common Commands, refer to the HP 75000 Series B
Mainframe User’s Manual (HP Model Number E1300/E1301), appropriate
HP Command Module User’s Manual, or the ANSI/IEEE Standard
488.2-1987.
Command Title Description
*IDN? Identification query Returns identification string of the switchbox.
*RST Reset Opens all channels, and invalidates current
channel list for scanning.
Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.
*TST? Self-Test Always returns 0.
*OPC Operation Complete Sets the request for OPC flag when all pending operations have
completed. Also sets OPC bit in the Standard Event Register.
*OPC? Operation Complete Query Returns a 1 to the output queue when all pending operations have
completed. Used to synchronize between multiple instruments.
*WAI Wait to Complete Halts execution of commands and queries until the "No Operation
Pending" message is true.
*CLS Clear status Clears all Event Registers, the Request for OPC flag, and all queues
(except output queue).
*ESE<
mask>
Event status enable Used to set the bits in the Event Status Enable Register.
*ESE? Event status enable query Queries the current contents in the Event Status Enable Register.
*ESR? Event status register query Queries and clears the contents in the Standard Event Status Register.
*SRE<
mask>
Service request enable Used to set the Service Request Enable Register bits, and corresponding
Serial Poll Status Byte Register bits, to generate a service request.
*SRE? Service request enable query Queries the current contents in the Service Request Enable Register.
*STB? Read status byte query Queries the current contents in the Status Byte Register.
*TRG Trigger Triggers the switchbox to advance the scan when scan is enabled and
trigger source is TRIGger:SOURce BUS.
*RCL<
n> Recall saved state Recalls previously stored Microwave Switch module configuration.
<
n> (0 to 9) is the location in memory where the desired (previously
stored) set-up is located.
*SAV<
n>
Save state Stores present settings of ARM:COUNt, TRIGger:SOURce,
OUTPut[:STATe], INITiate:CONTinuous, SCAN:MODE, and
SCAN:PORT. <
n> (0 to 9) is the location in memory where the current
set-up is located.
Note: See the
HP 75000 Series B E1300/E1301 Mainframe User’s Manual or the ANSI/IEEE Standard 488.2-1987 for
more information about these commands.
70 HP E1368A/69A/70A Command Reference Chapter 4