Keithley 2651A Reference Manual

Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-308 2651A-901-01 Rev. A / March 2011
Details
These attributes are used to read or write to the questionable status unstable output summary 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 information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register sets
(on page E-
2) and Enable and transition registers
(on page E-18). The individual bits of this register have the following
meanings:
Bit Value Description
B0 Not used Not applicable.
B1
status.questionable.unstable_output.SMUA
Set bit indicates that an unstable output
condition was detected.
Bit B1 decimal value: 2
Binary value: 0000 0010
B2-B15 Not used Not applicable.
In addition to the above constants, questionableRegister can be set to the numeric equivalent of the bit to
set.
Example
status.questionable.unstable_output.enable =
status.questionable.unstable_output.SMUA
Sets the SMU A bit in the
questionable status unstable output
summary enable register bit using a
constant.
Also see
Questionable Status Registers (on page E-21)
status.questionable.* (on page 7-300)
status.request_enable
This attribute stores the service request (SRQ) enable register.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes Status reset Not saved 0
Usage
requestSRQEnableRegister = status.request_enable
status.request_enable = requestSRQEnableRegister
requestSRQEnableRegister
The service request (SRQ) enable register's status. A zero (0) indicates
no bits set (also send 0 to clear all bits); other values indicate various bit
settings
Details
This attribute is used to read or write to the service request enable register. Reading the service request enable
register returns a value. The binary equivalent of the value of this attribute indicates which register bits are set. In
the binary equivalent, the least significant bit is bit B0, and the most significant bit is bit B7. For example, if a
value of 1.29000e+02 (which is 129) is read as the value of this register, the binary equivalent is 1000 0001.
This value indicates that bit B0 and bit B7 are set.

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English