Keithley 3721-ST User Manual

Section 11: TSP command reference Series 3700A System Switch/Multimeter Reference Manual
11-376 3700AS-901-01 Rev. D/June 2018
Details
These attributes read or write the measurement event registers.
Reading a status register returns a value. The binary equivalent of the returned value indicates which
register bits are set. The least significant bit of the binary number is bit B0, and the most significant bit
is bit B15.
For example, assume value 384 is returned for the enable register. The binary equivalent is
0000 0001 1000 0000. This value indicates that bit B7 (ROF) and bit B8 (BAV) are set.
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
**
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*
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register set
contents (on page C-1) and Enable and transition registers (on page C-19). The individual bits of this
register are defined in the following table.
Bit
Value
Description
B0
status.measurement.LOWER_LIMIT1
status.measurement.LLMT1
Set bit indicates that a reading has
exceeded the lower limit 1 value.
Bit B0 decimal value: 1
B1
status.measurement.UPPER_LIMIT1
status.measurement.ULMT1
Set bit indicates that a reading has
exceeded the upper limit 1 value.
Bit B1 decimal value: 2
B2
status.measurement.LOWER_LIMIT2
status.measurement.LLMT2
Set bit indicates that a reading has
exceeded the lower limit 2 value.
Bit B2 decimal value: 4
B3
status.measurement.UPPER_LIMIT2
status.measurement.ULMT2
Set bit indicates that a reading has
exceeded the upper limit 2 value.
Bit B3 decimal value: 8
B4-B6
Not used
Not applicable
B7
status.measurement.READING_OVERFLOW
status.measurement.ROF
Set bit indicates that a reading has resulted
in an overflow measurement value.
Bit B7 decimal value: 128
B8
status.measurement.BUFFER_AVAILABLE
status.measurement.BAV
Set bit indicates that a reading buffer is
storing measurement values.
Bit B8 decimal value: 256
Binary value: 0001 0000 0000
B9-B15
Not used
Not applicable
For example, assume value 257 is returned for the enable register. The binary equivalent is
0000 0001 0000 0001. This value indicates that bit B0 (VLMT) and bit B8 (BAV) are set.

Keithley 3721-ST Specifications

General

Brand	Keithley
Model	3721-ST
Category	Multimeter
Language	English