Keithley 708B Reference Manual page 434

Models 707B and 708B Switching Matrix Reference Manual
Details
Although the status logical instrument reset affects these attributes, a system reset does not.
These attribute's values are set using a constant or a decimal value, but are returned as a decimal 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 10000001. This value indicates that bit B0
and bit B7 are set.
B15 B14
** >
0 0
* Least significant bit
** Most significant bit
Assigning a value to this attribute enables one or more status events. When an enabled status event occurs, a
the corresponding bit is set in the event register.
The individual bits of the status byte condition register can be set to the following described values (for example,
to set bit B0 of the user operation status register, set status.operation.user.enable =
status.operation.user.BIT0):
Bit Value
B0
status.operation.user.BIT0
B1
status.operation.user.BIT1
B2
status.operation.user.BIT2
B3 status.operation.user.BIT3
B4 status.operation.user.BIT4
B5 status.operation.user.BIT5
B6
status.operation.user.BIT6
B7 status.operation.user.BIT7
B8 status.operation.user.BIT8
B9 status.operation.user.BIT9
B10
status.operation.user.BIT10
B11
status.operation.user.BIT11
B12 status.operation.user.BIT12
B13 status.operation.user.BIT13
B14 status.operation.user.BIT14
B15 Not used
In addition to the above constants, operationRegister can be set to the decimal 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 2048 + 16,384).
Bit
Binary value
Decimal
Weights
Bit
Binary value
Decimal
Weights
707B-901-01 Rev. A / August 2010
B13 B12 B11 B10
> > > >
0 0 0 0
B7 B6
0/1 0/1
128 64
7
(2 ) (2
B15 B14
0/1 0/1
32,768 16,384
15
(2 ) (2
B9 B8 B7 B6
> > > >
0 0 1 0
Description
Bit 0 decimal value: 1
Bit 1 decimal value: 2
Bit 2 decimal value: 4
Bit 3 decimal value: 8
Bit 4 decimal value: 16
Bit 5 decimal value: 32
Bit 6 decimal value: 64
Bit 7 decimal value: 128
Bit 8 decimal value: 256
Bit 9 decimal value: 512
Bit 10 decimal value: 1024
Bit 11 decimal value: 2048
Bit 12 decimal value: 4096
Bit 13 decimal value: 8192
Bit 14 decimal value: 16384
Not applicable
B5 B4
0/1 0/1
32 16
6 5 4
) (2 ) (2 )
B13 B12
0/1 0/1
8,192 4,096
14 13 12
) (2 ) (2 )
Section 7: Command reference
B5 B4 B3 B2
> > > >
0 0 0 0
B3 B2 B1
0/1 0/1 0/1
8 4 2
3 2 1
(2 ) (2 ) (2 )
B11 B10 B9
0/1 0/1 0/1
2,048 1024 512
11 10 9
(2 ) (2 ) (2 )
B1 B0
> *
0 1
B0
0/1
1
0
(2 )
B8
0/1
256
8
(2 )
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