Keithley 2657A, Reference Manual, Page: 564 / 805

Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 7: TSP command reference
2657A-901-01 Rev. B/December 2012 7-251
Bit Value Description
B0 status.measurement.VOLTAGE_LIMIT
status.measurement.VLMT
Set bit is a summary of the
status.measurement.voltage_limit
register.
Bit B0 decimal value: 1
B1
status.measurement.CURRENT_LIMIT
status.measurement.ILMT
Set bit is a summary of the
status.measurement.current_limit
register.
Bit B1 decimal value: 2
B2 status.measurement.SINK_LIMIT
status.measurement.SLMT
Set bit is a summary of the
status.measurement.sink_limit
register.
Bit B2 decimal value: 4
B3 status.measurement.OVERVOLTAGE
status.measurement.OV
Set bit is a summary of the
status.measurement.overvoltage
register.
Bit B3 decimal value: 8
B4-B6 Not used Not applicable
B7 status.measurement.READING_OVERFLOW
status.measurement.ROF
Set bit is a summary of the
status.measurement.reading_overflow
register.
Bit B7 decimal value: 128
B8
status.measurement.BUFFER_AVAILABLE
status.measurement.BAV
Set bit is a summary of the
status.measurement.buffer_available
register.
Bit B8 decimal value: 256
B9-B10 Not used Not applicable
B11 status.measurement.INTERLOCK
status.measurement.INT
Set bit indicates that the interlock has been asserted.
Bit B11 decimal value: 2,048
B12 Not used Not applicable
B13 status.measurement.INSTRUMENT_SUMMARY
status.measurement.INST
Set bit indicates that a bit in the measurement
instrument summary register is set.
Bit B13 decimal value: 8,192
B14-B15 Not used Not applicable
As an example, to set bit B8 of the measurement event enable register, set
status.measurement.enable =
status.measurement.BAV
.
In addition to the above constants,
measurementRegister
can be set to the decimal equivalent of the bit to
set. To set more than one bit of the register, set
measurementRegister
to the sum of their decimal weights.
For example, to set bits B1 and B8, set
measurementRegister
to 258 (which is the sum of 2 + 256).
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 1,024 512 256
Weights
(2
15
) (2
14
) (2
13
) (2
12
) (2
11
) (2
10
) (2
9
) (2
8
)
Example
status.measurement.enable = status.measurement.BAV Sets the BAV bit of the
measurement event enable register.
Also see
Measurement event registers (on page E-8)