Keithley 2657A User Manual

Section 7: TSP command reference Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-298 2657A-901-01 Rev. B/December 2012
Details
These attributes are used to read or write to the operation status user registers. Reading a status register returns
a value. The binary equivalent of the value indicates which register bits are set. In the binary equivalent, the least
significant bit is bit B0, and the most significant bit is bit B15. For example, if a value of 1.29000e+02 (which is
129) is read as the value of the condition register, the binary equivalent is 0000 0000 1000 0001. This value
indicates that bits B0 and B7 are set.
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
** > > > > > > > > > > > > > > *
0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register set contents (on
page E-1) and Enable and transition registers
(on page E-19). The individual bits of this register are defined in
the following table.
Bit Value Description
B0
status.operation.user.BIT0
Bit B0 decimal value: 1
B1
status.operation.user.BIT1
Bit B1 decimal value: 2
B2
status.operation.user.BIT2
Bit B2 decimal value: 4
B3
status.operation.user.BIT3
Bit B3 decimal value: 8
B4
status.operation.user.BIT4
Bit B4 decimal value: 16
B5
status.operation.user.BIT5
Bit B5 decimal value: 32
B6
status.operation.user.BIT6
Bit B6 decimal value: 64
B7
status.operation.user.BIT7
Bit B7 decimal value: 128
B8
status.operation.user.BIT8
Bit B8 decimal value: 256
B9
status.operation.user.BIT9
Bit B9 decimal value: 512
B10
status.operation.user.BIT10
Bit B10 decimal value: 1,024
B11
status.operation.user.BIT11
Bit B11 decimal value: 2,048
B12
status.operation.user.BIT12
Bit B12 decimal value: 4,096
B13
status.operation.user.BIT13
Bit B13 decimal value: 8,192
B14
status.operation.user.BIT14
Bit B14 decimal value: 16,384
B15 Not used Not applicable
As an example, to set bit B0 of the operation status user enable register, set
status.operation.user.enable = status.operation.user.BIT0.
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 B11 and B14, set operationRegister to 18,432 (which is the sum of 2,048 + 16,384).

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English