34 Keysight N2791A/N2891A High-Voltage Differential Probes User Guide
N2891A Performance Verification Procedures
Bandwidth
1 Connect the 50 Ω BNC feed through adapter to the calibrator’s active
head channel 1.
2 Attach the BNC (f)-to-banana post adapter to the BNC feed through
adapter.
3 Attach the differential probe input leads by clipping the alligator clamp
to the BNC adapter banana post.
4 Set the probe to 100:1 attenuation.
5 Set the volts/division on channel 1 of the oscilloscope to 10 mV/div
and seconds/division to 20 ns/div. Set the trace to the center of the
oscilloscope. Input impedance should be set to 1 ΜΩ. Disable average
mode.
6 Set the calibrator to sine wave, 5 V peak-to-peak amplitude. Set the
frequency to 70 MHz, 50 Ω load.
7 Write down the peak-to-peak amplitude measured by the
oscilloscope. It should be greater than or equal to 35 mV - scope
vertical accuracy.
8 Disable the generator output and disconnect the probe input.
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