Keysight N2800A User Manual page 98

6
Performance Verification
Measuring Input Resistance for the Browser Probe Head
The following image shows the correct setup for measuring the differential input resistance
of the N5445A Browser probe head
Figure 72 Setup for Measuring Input Resistance for Browser Probe Head
1 Set the browser for a fairly wide span (span does not impact this DC measurement).
2 Plug the probe amplifier into the browser.
3 Clamp the browser with the N2787A probe positioner.
4 Hold the browser with one hand and loosen the arm locking knob on the probe positioner
with the other hand.
5 Carefully position one tip over the signal trace on the PV fixture and the other over the
ground plane. Then let the weight of the browser slightly compress the tips so good
contact is made.
6 Now the differential and single-ended input resistance can be measured in the same
manner as for the ZIF and solder-in probe head procedure above.
98
(Figure 72).
InfiniiMax III Series Probes User's Guide