Keithley 707B, Справочное руководство

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Models 707B and 708B Switching Matrix Reference Manual Section 7: Command reference
707B-901-01 Rev. A / August 2010 7-191
Details
Although the status logical instrument reset affects these attributes, a system reset does not.
In an expanded system (TSP-Link), these attributes are used to read or write to the system summary registers.
They 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
1.02
(which is 129) is read as the value of the
condition register, the binary equivalent is
0000 0000 1000 0001
. This value indicates that bit B0 and bit 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
Assigning a value to this attribute enables one or more status events. When an enabled status event occurs, a
summary bit is set in the appropriate system summary register. The register and bit that is set depends on the
TSP-Link node number assigned to this instrument. The individual bits of the status byte condition register can
be set to the following described values (for example, to set the enable bit to B0 of the system summary status
register, set
status.system.enable = status.system.enable.EXT
):
Bit Value Description
B0 status.system.EXTENSION_BIT
status.system.EXT
Bit 0 decimal value: 1
B1
status.system.NODE1
Bit 1 decimal value: 2
B2
status.system.NODE2
Bit 2 decimal value: 4
B3 status.system.NODE3 Bit 3 decimal value: 8
B4 status.system.NODE4 Bit 4 decimal value: 16
B5 status.system.NODE5 Bit 5 decimal value: 32
B6
status.system.NODE6
Bit 6 decimal value: 64
B7 status.system.NODE7 Bit 7 decimal value: 128
B8 status.system.NODE8 Bit 8 decimal value: 256
B9 status.system.NODE9 Bit 9 decimal value: 512
B10 status.system.NODE10 Bit 10 decimal value: 1024
B11 status.system.NODE11 Bit 11 decimal value: 2048
B12 status.system.NODE12 Bit 12 decimal value: 4096
B13 status.system.NODE13 Bit 13 decimal value: 8192
B14 status.system.NODE14 Bit 14 decimal value: 16384
B15 Not used Not applicable
In addition to the above constants,
enableRegister
can be set to the decimal equivalent of the bit to set. To
set more than one bit of the register, set
enableRegister
to the sum of their decimal weights. For example, to
set bits B11 and B14, set
enableRegister
to 18,432 (which is the sum of 2048 + 16,384).
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
)