Keysight N777 C Series Programming Manual page 32

3 Instrument Setup and Status
Command: *STB?
Syntax: *STB?
Description: The STatus Byte query *STB? returns the contents of the Status Byte register.
Parameters: none
Response: The bit value for the register (a 8-bit signed integer value):
Bit
7 (MSB)
6
5
4
3
2
1
0
Example:
*STB?
Command: *TST?
Syntax: *TST?
Description: The self-TeST query *TST? makes the instrument perform a self-test and place the results of the test in the output queue. If
the self-test fails, the results are also put in the error queue. We recommend that you read self-test results from the error
queue. No further commands are allowed while the test is running. After the self-test the instrument is returned to the
setting that was active at the time the self-test query was processed. The self-test does not require operator interaction
beyond sending the *TST? query.
Parameters: none
Response:
A value of zero indicates no errors.
Example:
*TST?
32
Mnemonic
Operation Status (OSB)
Not used
Event Status Bit (ESB)
Message Available (MAV)
Questionable Status (QSB)
Not used
Not used
Not used
->
+32
Selftest failed
->
0
1
Keysight N777xC Series Tunable Laser Family Programming Guide
Decimal Value
128
64
32
16
8
0
0
0