Tektronix Keithley 2651A Reference Manual page 852

Section 12: Calibration
Calibration commands
Command
smua.source.calibratev(range,
cp1Expected, cp1Reference,
cp2Expected, cp2Reference)
smua.contact.calibratelo(
cp1Measured, cp1Reference,
cp2Measured, cp2Reference)
smua.contact.calibratehi(
cp1Measured, cp1Reference,
cp2Measured, cp2Reference)
* Calibration point 1 should be performed at approximately 0% of range; calibration point 2 should be performed at
approximately 90% of range. See
Adjustment procedure
Use the following procedure to perform remote calibration adjustment by sending commands over a
communications interface. The remote commands and appropriate parameters are separately
summarized for each step.
Step 1. Prepare the Model 2651A for adjustment
A. Connect the Model 2651A to the controller IEEE-488 interface, RS-232 port, or LAN using an
appropriate interface cable.
B. Turn on the Model 2651A and the test equipment. Allow them to warm up for at least two hours
before performing adjustment.
C. Make sure the IEEE-488, RS-232, or LAN interface parameters are set up properly. To configure
the interface, press the MENU key, and then select RS232, LAN, or GPIB, as applicable;
configuration of the USB interface is not necessary so it is not available.
Step 2. Voltage calibration adjustment
A. Connect the Model 2651A SMU to the digital multimeter using the 4-wire connections shown in
the figure below, and select the multimeter dc volts function.
12-22
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Description
Adjust voltage source range calibration*:
±range (source range to adjust).
cp1Expected (source value programmed for cal. point 1).
cp1Reference (reference measurement for cal. point 1).
cp2Expected (source value programmed for cal. point 2).
cp2Reference (reference measurement for cal. point 2)
Adjust the low/sense low contact check measurement calibration.
cp1Measured (value measured by SMU for cal. point 1).
cp1Reference (reference measurement for cal. point 1).
cp2Measured (value measured by SMU for cal. point 2).
cp2Reference (reference measurement for cal. point 2).
Adjust the high/sense high contact check measurement
calibration.
cp1Measured (value measured by SMU for cal. point 1).
cp1Reference (reference measurement for cal. point 1).
cp2Measured (value measured by SMU for cal. point 2).
cp2Reference (reference measurement for cal. point 2)
Step sequence (on page 12-19) for calibration points.
2651A-901-01 Rev. C October 2021