Model 2657A High Power System SourceMeter® Instrument Reference Manual
Appendix E: Status model
2657A-901-01 Rev. B/December 2012
E-13
Figure 154: Questionable status registers
Clearing registers
Commands to reset the status registers are listed in the table below.
In addition to these commands, you can reset the enable registers and the NTR to 0. To do this, send
the individual command to program the register with a 0 as its parameter value. The PTR registers
can be reset to their defaults by programming them with all bits on. Note that the event registers are
not programmable but can be cleared by reading them.
Commands to reset registers
Command Description
To reset registers:
*CLS
Reset bits of the event and NTR registers to 0 and
set all PTR register bits on. Also clears the output
queue.
status.reset()
Reset bits of the event and NTR registers to 0 and
set all PTR register bits on.
0
6
5
3
4
2
1
7
14
13
12
11
10
9
8
15
Questionable Status Register
(questionable/QSR)
+
Instrument Summary (INST)
0
6
5
3
4
2
1
7
14
13
12
11
10
9
8
15
Questionable Status
Calibration Summary
Register
+
SMU A (SMUA)
0
6
5
3
4
2
1
7
14
13
12
11
10
9
8
15
Questionable Status
Instrument Summary
Register
+
SMU A (SMUA)
To Questionable
Summary Bit (QSB) in
Status Byte (STB)
0
6
5
3
4
2
1
7
14
13
12
11
10
9
8
15
Questionable Status
SMU A Summary
Register
+
Calibration (CAL)
Similar registers
exists for Over
Temperature and
Unstable Output
Calibration (CAL)
Over Temperature (OTEMP)
Over Temperature (OTEMP)
status.questionable.instrument.smua
status.questionable.calibration
status.questionable.instrument
status.questionable
(status.questionable.over_temperature)
Unstable Output (UO)
(status.questionable.unstable_output)
Unstable Output (UO)
Summary of Contents for 2657A
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