Stanford Research Systems SR124 Operation And Service Manual page 75

4.4 Commands
*STB? [i]
Example:
*SRE(?) [i,] j
Example:
*ESR? [i]
Example:
*ESE(?) [i,] j
Example:
*CLS
Example:
LEXE?
SR124 Analog Lock-In Amplifier
Status byte
Reads the Status Byte register [bit i].
*STB?
0
Service request enable
Set (query) the Service Request Enable register [bit i] to j .
*SRE 0,1
Standard event status
Reads the Standard Event Status Register [bit i].
Upon executing *ESR?, the returned bit(s) of the ESR register are
cleared.
*ESR?
64
Standard event status enable
Set (query) the Standard Event Status Enable Register [bit i] to j .
*ESE 6,1
ESE?
64
Clear status
*CLS immediately clears the ESR register, and the UNLOCK and
OVERLOAD bits in the Status Byte.
*CLS
Last execution error
Query the last execution error code. A query of LEXE? always clears
the error code, so a subsequent LEXE? will return 0. Valid codes are:
Value Definition
0 No execution error since last LEXE?
1 Illegal value
2 Wrong token
3 Invalid bit
4 Queue full
5 Not compatible
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