Keithley 2651A Reference Manual

Section 3: Functions and features Model 2651A High Power System SourceMeter® Instrument Reference Manual
3-2 2651A-901-01 Rev. A / March 2011
Defining a rel value
A unique rel value can be established for the selected measurement function.
To establish a unique rel value from the front panel:
1. Press the CONFIG key and then the REL key.
2. Select the measurement function (CURRENT, VOLTAGE, OHMS, or WATTS), and then press
ENTER or the navigation wheel
. The present rel value is displayed.
3. Set the desired rel value.
4. With the desired rel value displayed, press the ENTER key or the navigation wheel
, and then
press the EXIT (LOCAL) key to back out of the menu structure.
Remote rel programming
Rel commands
Rel commands are summarized in the following table.
Rel commands
Command Description
To set rel values:
smua.measure.rel.leveli = relval
Set current rel value.
smua.measure.rel.levelp = relval
Set power rel value.
smua.measure.rel.levelr = relval
Set resistance rel value.
smua.measure.rel.levelv = relval
Set voltage rel value.
To enable/disable rel:
smua.measure.rel.enablei = smua.REL_OFF
Disable current rel.
smua.measure.rel.enablep = smua.REL_OFF
Disable power rel.
smua.measure.rel.enabler = smua.REL_OFF
Disable resistance rel.
smua.measure.rel.enablev = smua.REL_OFF
Disable voltage rel.
smua.measure.rel.enablei = smua.REL_ON
Enable current rel.
smua.measure.rel.enablep = smua.REL_ON
Enable power rel.
smua.measure.rel.enabler = smua.REL_ON
Enable resistance rel.
smua.measure.rel.enablev = smua.REL_ON
Enable voltage rel.
Rel programming example
The programming example below illustrates how to set and enable current rel to 100 mA:
-- Set current rel to 100 mA.
smua.measure.rel.leveli = 0.1
-- Enable current rel.
smua.measure.rel.enablei = smua.REL_ON

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English