Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 7: Command reference
2651A-901-01 Rev. A / March 2011 7-301
Bit Value Description
B0-B7 Not used Not available
B8
status.questionable.CALIBRATION
status.questionable.CAL
An enabled bit in the questionable status calibration
summary event register is set.
Bit B6 decimal value:256
B9
status.questionable.UNSTABLE_OUTPUT
status.questionable.UO
An enabled bit in the questionable status unstable
output summary event register is set.
Bit B9 decimal value: 512
B10-B11 Not used Not available
B12
status.questionable.OVER_TEMPERATURE
status.questionable.OTEMP
An enabled bit in the questionable status over
temperature summary event register is set.
Bit B12 decimal value: 4,096
B13
status.questionable.INSTRUMENT_SUMMARY
status.questionable.INST
An enabled bit in the questionable status
instrument summary event register is set.
Bit B13 decimal value: 8,192
B14-B15 Not used Not available
As an example, to set bit B9 of the questionable status enable register, set status.questionable.enable =
status.questionable.UO.
In addition to the above constants, quesRegister can be set to the numeric equivalent of the bit to set. To set
more than one bit of the register, set quesRegister to the sum of their decimal weights. For example, to set
bits B12 and B13, set quesRegister to 12,288 (which is the sum of 4096 + 8192).
Bit B7 B6 B5 B4 B3 B2 B1 B0
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal 128 64 32 16 8 4 2 1
Weights (2
7
) (2
6
) (2
5
) (2
4
) (2
3
) (2
2
) (2
1
) (2
0
)
Bit B15 B14 B13 B12 B11 B10 B9 B8
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal 32,768 16,384 8,192 4,096 2,048 1024 512 256
Weights (2
15
) (2
14
) (2
13
) (2
12
) (2
11
) (2
10
) (2
9
) (2
8
)
Also see
Questionable Status Registers (on page E-21)
status.questionable.calibration.*
This attribute contains the questionable status calibration summary register set.
Type TSP-Link accessible Affected by Where saved Default value
Attribute - - - - - - - -
.condition (R) Yes Not applicable Not saved Not applicable
.enable (RW) Yes Status reset Not saved 0
.event (R) Yes Status reset Not saved 0
.ntr (RW) Yes Status reset Not saved 0
.ptr (RW) Yes Status reset Not saved 2 (All bits set)

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English