Keithley 2651A Reference Manual

Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-218 2651A-901-01 Rev. A / March 2011
smuX.source.lowrangeY
This attribute sets the lowest source range that will be used during autoranging.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes SMU reset
Instrument reset
Recall
Saved setups Voltage: 100e-3 (100 mV)
Current: 100e-9 (100 nA)
Usage
sourceRangeLow = smuX.source.lowrangeY
smuX.source.lowrangeY = sourceRangeLow
sourceRangeLow
Set to the lowest voltage (in volts) or current (in amperes) range to be used
X
Source-measure unit (SMU) channel (for example, smua.source.lowrangev
applies to SMU channel A)
Y
SMU source function (v = voltage, i = current)
Details
This attribute is used with source autoranging to put a lower bound on the range used. Lower ranges generally
require greater settling times. By setting a low-range value, sourcing small values might be able to be made with
less settling time.
If the instrument is set to autorange and it is on a range lower than the one specified by sourceRangeLow, the
source range will be changed to the range specified by sourceRangeLow.
Example
smua.source.lowrangev = 1
Sets volts low range for Model
2651A SMU channel A to 1 V. This
prevents the source from using the
100 mV range when sourcing
voltage.
Also see
smuX.source.autorangeY (on page 7-211)
smuX.source.offfunc
This attribute sets the source function used (source 0 A or 0 V) when the output is turned off and the
source-measure unit (SMU) is in normal output-off mode.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes SMU reset
Instrument reset
Recall
Saved setups smuX.OUTPUT_DCVOLTS

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English