Keithley 2651A Reference Manual

Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-282 2651A-901-01 Rev. A / March 2011
Bit Value Description
B0 Not used Not applicable.
B1
status.operation.instrument.smuX.trigger_overrun.ARM
Set bit indicates that the
arm event detector of the
SMU was already in the
detected state when a
trigger was received.
Bit B1 decimal value: 2
B2
status.operation.instrument.smuX.trigger_overrun.SRC
Set bit indicates that the
source event detector of
the SMU was already in
the detected state when a
trigger was received.
Bit B2 decimal value: 4
B3
status.operation.instrument.smuX.trigger_overrun.MEAS
Set bit indicates that the
measure event detector of
the SMU was already in
the detected state when a
trigger was received.
Bit B3 decimal value: 8
B4
status.operation.instrument.smuX.trigger_overrun.ENDP
Set bit indicates that the
end pulse event detector of
the SMU was already in
the detected state when a
trigger was received.
Bit B4 decimal value: 16
B5-B15 Not used Not applicable.
As an example, to set bit B1 of the operation status SMU A trigger overrun enable register, set
status.operation.instrument.smua.trigger_overrun.enable =
status.operation.instrument.smua.trigger_overrun.ARM.
In addition to the above constants, operationRegister can be set to the numeric equivalent of the bit to set.
To set more than one bit of the register, set operationRegister to the sum of their decimal weights. For
example, to set bits B1 and B4, set operationRegister to 18 (which is the sum of 2 + 16).
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
)
Example
status.operation.instrument.smua.trigger_overrun.enable =
status.operation.instrument.smua.trigger_overrun.ARM
Sets the ARM bit of the
operation status SMU A
trigger overrun enable
register using a
constant.
Also see
Operation Status Registers (on page E-20)
status.operation.instrument.smuX.*
(on page 7-279)

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English