564 Chapter 8
Using the STATus System
Common IEEE Commands
Using the STATus System
register.
Key Type: There is no equivalent front panel key.
Range: Integer, 0 to 255

Standard Event Status Register Query

*ESR?
Queries and clears the standard event status event register. (This is a
destructive read.)
Key Type: There is no equivalent front panel key.
Range: Integer, 0 to 255

Identification Query

*IDN?
Returns an instrument identification information. The string will
contain the model number, serial number and firmware revision.
The response is organized into four fields separated by commas. The
field definitions are as follows:
• Manufacturer
• Model
Serial number
•Firmwareversion
For example:
Agilent Technologies,E4440A,US00000123,B.02.02 (for PSA)
Key Type: There is no equivalent front panel key.
Remarks: An @ in the firmware revision information indicates
that it is proto firmware.
Front Panel
Access: System, Show System

Instrument State Query

*LRN?
This command is not implemented. Other commands are available for