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Appendix D
Common commands
In this appendix:
Command summary ................................................................ D-1
Script command equivalents ................................................... D-2
Command reference ................................................................ D-2
Command summary
Common commands supported by the Model 2651A are summarized in the following table. Although
commands are shown in upper-case, common commands are not case sensitive, and either upper or
lower case can be used. Note that although these commands are essentially the same as those
defined by the IEEE- 488.2 standard, the Model 2651A does not strictly adhere to that standard.
NOTE
Unlike other commands, such as those in the
(on page 7-1), each common
command must be sent as separate lines.
Mnemonic Name
Description
*CLS
Clear status
Clears all event registers and Error Queue. For status commands
details, see
*ESE <mask>
Event enable command
Program the Standard Event Status Enable Register. For status
commands details, see
*ESE?
Event enable query
Read the Standard event status enable Register. For status
commands details, see
*ESR?
Event status register query
Read/clear the Standard Event Enable Register. For status
commands details, see
*IDN?
Identification query
Returns the manufacturer, model number, serial number, and
firmware revision levels of the unit. For detailed information, see
(on page D-3).
*OPC
Operation complete command
Set the Operation Complete bit in the Standard Event Register
after all pending commands have completed. For detailed
information, see
Operation complete and query: *OPC and *OPC?
*OPC?
Operation complete query
Places an ASCII "1" into the Output Queue when all selected
device operations have completed. For detailed information, see
Operation complete and query: *OPC and *OPC?
*RST
Reset command
Returns the Model 2651A to default conditions. For detailed
information, see
(on page D-3).
*SRE <mask>
Service request enable command Programs the Service Request Enable Register. For status
commands details, see
*SRE?
Service request enable query
Reads the Service Request Enable Register. For status
commands details, see
*STB?
Status byte query
Reads the status byte register. For status commands details, see