Keithley 2790, Reference Manual

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17-24 Model 2790 SourceMeter
®
Switch System Reference Manual
5. Calibrate step 0 with the following command:
:CAL:PROT:DC:STEP0
6. Perform the entire remote comprehensive calibration procedure. See “ Comprehensive
calibration ” earlier in this section.
7. Connect the calibrator to the Model 2790 INPUT jacks as shown in Figure 17-5 .
Select the front input jacks with the INPUTS switch.
8. Set the calibrator to output a 1V RMS, 10Hz sine wave, then send the following
command:
:CAL:PROT:AC:STEP14 <Cal_voltage>
Here <Cal_voltage> is the actual 10Hz calibrator signal amplitude. If an error is
reported after performing this step, refer to
Table 17-14 for troubleshooting.
9. Connect the function generator to the Model 2790 INPUT jacks as shown in
Figure 17-6 .
10. Set the generator to output a 1V RMS, 1kHz sine wave, then send the following
command:
:CAL:PROT:AC:STEP15 1E3
11. Send the following commands to set calibration dates, save calibration, and lock
out calibration:
:CAL:PROT:DATE <yyyy>, <mm>, <dd>
:CAL:PROT:NDUE <yyyy>, <mm>, <dd>
:CAL:PROT:SAVE
:CAL:PROT:LOCK
Calibration for firmware revision A03 and lower
Measuring function generator signal amplitude
The 3Hz function generator signal amplitude must be accurately measured using the digi-
tal multimeter listed in
Table 17-13 . Proceed as follows:
1. Connect the function generator output to the digital multimeter INPUT jacks. (See
Figure 17-6 for typical connections.)
2. Turn on the function generator and multimeter. Allow a two-hour warm-up period
before measuring.
3. Set the function generator to output a 1V RMS sine wave at 3Hz; measure and
record the signal amplitude.
Front panel manufacturing calibration (firmware revision A03 and lower)
1. Install the shorted calibration extender board (see “ Extender board preparation ”
earlier in this section) in scanner card Slot 1 and select the rear inputs with the
INPUTS switch. Allow three minutes for thermal equilibrium.