HP 8753E Network Analyzer Service Guide - Agilent Technologies

Verify Shorts and Opens
Substitute a known good short and open of the same connector type and sex as
the short and open in question. If the devices are not from one of the standard
calibration kits, refer to the HP 8753E Network A~~~lyzer User’s Guide for
hfomation on how to use the ~~~~~~~~~~~~ fMction* Set aside the short
and open that are causing the problem.
1. Perform an Sll l-port calibration using the good short and open. Then press
zpQ&g,c,,
. . . . .._. . ;ii.....:L.:!. i I-- ~~~~~~~~
-._- ..__.._... - . . . . .../..
to view the devices h S&h chart format.
2. Come& the good shod to poti 1. Press c-1 ~~~~~~~~~ ad
turn the front panel knob to enter enough electrical delay so that the trace
appears as a dot at the left side of the circle. (See Figure 9-2a, left.)
Replace the good short with the questionable short at port 1. The trace of
the questionable short should appear very similar to the known good short.
3. CoMect *e good open to port 1. mess lscale, ~.~~~~~~~~ and
turn the front panel knob to enter enough electrical delay so that the trace
appears as a dot at the right side of the circle. (See Figure 9-2b, right.)
Replace the good open with the questionable open at port 1. The trace of the
questionable open should appear very similar to the known good open.
g-6 Accessories Troubleshooting