Dc Differential Gain Accuracy - Keysight N2790A User Manual

Performance Verification Procedures

DC Differential Gain Accuracy

24
1 Set the volts/division on channel 1 of the oscilloscope to 20 mV/div.
Set the seconds/div to 200
2 Set the volts/division on channel 2 of the oscilloscope to 50 mV/div.
Trigger on channel 2, select 50
3 Set the calibrator 9500B's channel 2 as the trigger channel (50
Connect the calibrator's channel 2 active head to channel 2 of the
oscilloscope.
4 Connect the active head channel 1 from the Fluke 9500B to channel 1
of the oscilloscope. Set the calibrator channel 1 to 0.1V peak-to-peak
amplitude and 1 kHz (square wave, 1 M
5 Select the amplitude measurement on the oscilloscope and record the
DC amplitude (approximately 100 mV) of the square wave. This
measurement is only the oscilloscope.
6 Disable the Fluke calibrator output, disconnect the channel 1 active
head from channel 1 of the oscilloscope.
7 Connect the output of the N2790A probe to channel 1 of the
oscilloscope.
8 Attach the BNC adapter to the Fluke channel 1 active head.
9 Attach the differential probe input leads by clipping the alligator clamp
to the BNC adapter banana post.
10 Set the probe to 50:1. Set the Fluke calibrator to 10V and 1 kHz
standard amplitude output (channel 1, square wave, 1 M
11 Enable the output of the calibrator.
12 Record the DC amplitude of the square wave and divide 50 into just the
amplitude of the oscilloscope. Verify that the probe gain accuracy is
±2% + scope gain accuracy.
13 Set the calibrator to 100V output and set the attenuation button on the
probe to 500:1.
14 Record the DC amplitude of the square wave and divide 500 into just
the amplitude of the oscilloscope. Verify that the probe gain accuracy
is ±2% + scope gain accuracy.
15 Disable the calibrator output and leave the setup connected for the
next procedure.
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Keysight N2790A Differential Voltage Probe User Guide
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