Tektronix Keithley SourceMeter 2461, Руководство по калибровке и настройке

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Section 3: Calibration Model 2461 Calibration and Adjustment Manual
3-10 2461-905-01 Rev. A / February 2016
Step 4. Resistance measurement calibration verification
Follow the steps below to verify that Model 2461 resistance measurement accuracy is within specified
limits. In this procedure, you apply accurate resistances from a resistance calibrator and then verify
that Model 2461 resistance measurements are within required limits.
1. With the source output off, connect the Model 2461 to the resistance calibrator using the
connection configuration in Connections for resistance calibration verification and adjustment (on
page 2-6).
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the Model 2461
while the instrument is powered on. Turn off the equipment from the front panel or
disconnect the main power cord from the rear of the Model 2461 before handling cables.
Putting the equipment into standby does not guarantee that the outputs are powered off if a
hardware or software fault occurs.
2. Turn on the Model 2461 source output.
If the Model 2461 is not already warmed up, allow it to warm up for at least one hour before
continuing to the next step.
3. On the resistance calibrator, select the external sense mode.
4. Send the commands summarized in the following table in the order listed to verify resistance
measurement accuracy.
Resistance calibration verification procedure using a resistance calibrator*
Step Command or procedure Description
1 *RST Restore default settings.
2 :FUNC "RES" Select the resistance function.
3 :RES:RANG:AUTO OFF Disable autoranging.
4 :RES:RANG <Range> Set the resistance range.
5 :RES:RSEN ON Enable 4-wire remote sensing.
6
:ROUT:TERM <FRONT
or
REAR>
Select the front-panel or rear-panel terminals to
match your test setup.
7 Program calibrator value. Set the resistance calibrator value.
8 :OUTP:STAT ON Turn on the source output.
9 :READ? Have the Model 2461 measure and return its
source output.
10 :OUTP:STAT OFF Turn off the source output.
11 Calculate the measure error. Calculate the difference between step 7 and
step 9.
12 Validate measure accuracy. Compare the result of step 11 to the calibrator
specification.
* Perform the complete procedure for each range, where
<Range>
= 20, 200, 2K, 20K, 200K, 2M, 20M, and 200M.