Keysight N2791A User Manual page 25

2 Set the volts/division on channel 2 of the oscilloscope to 500 mV/div. Trigger on
channel 2, select 50 Ω impedance.
3 Set the calibrator 9500B's channel 2 as the trigger channel (50 Ω load). 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 MΩ load), enable the output.
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 N2891A 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 100:1. Set the Fluke calibrator to 10 V and 1 KHz standard
amplitude output (channel 1, square wave, 1 MΩ load).
11 Enable the output of the calibrator.
12 Record the DC amplitude of the square wave and divide 100 into just the
amplitude of the oscilloscope. Verify that the probe gain accuracy is +/-2% +
scope gain accuracy.
13 Set the calibrator to 100 V output and set the attenuation button on the probe
to 1000:1.
14 Record the DC amplitude of the square wave and divide 10 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.
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.
N2891A Performance Verification Procedures
25