Ieee 488.2 common commands – HP E1368A User Manual

Page 71

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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

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