Tektronix Keithley 2651A Reference Manual page 844

Section 12: Calibration
▪
Output voltage accuracy limits
Source range
100 mV
1 V
10 V
20 V
40 V
* Modify voltage limits if necessary. See
6. Repeat the procedure for negative output voltages with the same magnitudes as those listed in
the previous table, as applicable.
Voltage measurement accuracy
Follow the steps below to verify that the Model 2651A voltage measurement accuracy is within
specified limits. To perform this test, you will set the source voltage, as measured by a precision
digital multimeter, and then verify that the Model 2651A voltage readings are within required limits.
1. With the power off, connect the digital multimeter to the Model 2651A output terminals using
4-wire connections (the same Connections for voltage verification as shown in
accuracy
2. Select the multimeter dc volts function.
3. Enable the Model 2651A 4-wire (remote sense) mode:
a. Press the CONFIG key and then the MEAS key.
b. Select V-MEAS > SENSE-MODE > 4-WIRE.
4. Set the Model 2651A SMU to both source and measure voltage by pressing the SRC and then
the MEAS keys.
5. Make sure the source output is turned on (if off, press the OUTPUT ON/OFF control).
6. Verify voltage measurement accuracy for each of the voltages listed in the table (see below). For
each test point:
▪
Select the correct source range.
▪
Set the Model 2651A output voltage such that the digital multimeter reading is the value
indicated in the source voltage column of the table below. It may not be possible to set the
voltage source to get exactly the required reading on the digital multimeter. Use the closest
possible setting and modify the reading limits accordingly.
12-14
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Output voltage setting*
50.000 mV
90.000 mV
0.50000 V
0.90000 V
5.0000 V
9.0000 V
10.000 V
18.000 V
20.000 V
36.000 V
(on page 12-13)).
Output voltage limits
(1 year, 18° C to 28° C)
49.490 mV to 50.510 mV
89.482 mV to 90.518 mV
0.49940 V to 0.50060 V
0.89932 V to 0.90068 V
4.9940 V to 5.0060 V
8.9932 V to 9.0068 V
9.993 V to 10.007 V
17.991 V to 18.009 V
19.984 V to 20.016 V
35.981 V to 36.019 V
Source limit calculations (on page 12-4).
Voltage source
2651A-901-01 Rev. C October 2021