Chapter 10
165
Command Reference
IEEE Common Commands
10
. Comm
and
Refe
ren
ce
*ESR?
Syntax
*ESR?
Description
Reads out the value of the Standard Event Status Register. Executing this command clears
the register value. (Query only)
Query response
{numeric}<newline><^END>
Equivalent key
sequence
No equivalent key is available on the front panel.
*IDN?
Syntax
*IDN?
Description
Reads out the product information (model number, serial number, and firmware version
number) of the E4981A. (Query only)
Query response
{string 1},{string 2},{string 3}, {string 4} <newline><^END>
Readout data is as follows:
{string 1}
Keysight Technologies.
{string 2}
Model number. E4981A is always read out.
{string 3}
10-digit serial number (example: JP1KH00101).
{string 4}
Firmware version number (example: A.01.00).
Equivalent key
sequence
[System]
*LRN?
Syntax
*LRN?
Description
Returns all the necessary commands to set the E4981A at its present state. The response
can later be sent back to the E4981A to place it in this state. (Query Only)
Equivalent key
sequence
No equivalent key is available on the front panel.
*OPC
Syntax
*OPC
Description
Sets the OPC bit (bit 0) of the Standard Event Status Register at the completion of all
pending operations. (No query)
Equivalent key
sequence
No equivalent key is available on the front panel.