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E1442A Command Reference 83Chapter 3
IEEE 488.2 Common Commands Reference
The following table lists the IEEE 488.2 Common (*) commands
accepted by the E1442A 64-channel Form C Switch Module. The
operation of some of these commands is described in Chapter 2 of this
manual. For more information on Common commands, refer to the user’s
manual for your mainframe or to the ANSI/IEEE Standard 488.2-1987.
The common commands *RCL, *SAV and *TST? do specific actions with
the E1442A, as listed in the following table.
Command Command Description
*CLS Clears all status registers (see STATus:OPERation[:EVENt]?) and clears the error queue.
*ESE<unmask> Enables Standard Event.
*ESE? Enables Standard Event Query.
*ESR? Standard Event Register Query.
*IDN? Instrument ID Query; returns identification string of the module.
*OPC Operation Complete.
*OPC? Operation Complete Query.
*RCL<n> Recalls the instrument state saved by *SAV. You must reconfigure the scan list.
*RST Resets the module. Opens all channels and invalidates current channel list for scanning.
Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.
*SAV<n> Stores the instrument state but does not save the scan list.
*SRE<unmask> Service request enable, enables status register bits.
*SRE? Service request enable query.
*STB? Read status byte query.
*TRG Triggers the module to advance the scan when scan is enabled and trigger source is
TRIGger:SOURce BUS.
*TST? Self-test. Executes an internal self-test and returns only the first error encountered. Does
not return multiple errors. The following is a list of responses you can obtain where “cc” is
the card number with the leading zero deleted.
+0 if self test passes.
+cc01 for firmware error.
+cc02 for bus error (problem communicating with the module).
+cc03 for incorrect ID information read back from the module's ID register.
+cc10 if an interrupt was expected but not received.
+cc11 if the busy bit was not held for a sufficient amount of time.
*WAI Wait to Complete.