Inspect The Ccessories; Switch Repeatability; Inspect The Error Terms - HP 8753D Option 011 Service Manual

Inspect the ccessories

nspect the System's Connectors and Calibration Devices
1. Check for damaged mating interfaces and loose connector bulkheads on the analyzer's front
panel connectors.
2. Check the test set and power splitter connectors for defects as well.
3. Inspect the calibration kit devices for bent or broken center conductors and other physical
damage. Refer to the calibration kit operating and service manual for information on
gaging and inspecting the device connectors.
If any calibration device is obviously damaged or out of mechanical tolerance, replace the
device.

Switch Repeatability

Calibration does not compensate for the repeatability of the mechanical transfer switch in the
S-parameter test sets, so the switch can be a source of error. However, most switch failures
are not subtle: no action.
Connect the test set to the analyzer. Press
efl: FWD S11 (A/ )
No sound: con rm that the test set has a solid-state (noiseless) switch, then refer to \Test
Set Troubleshooting" to locate the problem.
udible sound: continue with this section unless a subtle failure is suspected. To
troubleshoot subtle failures, refer to the test set manual.

Inspect the Error Terms

Error terms are a measure of a \system": a network analyzer, calibration kit, and any cables
used. s required, refer to Chapter 11, \Error Terms" for the following:
The speci c measurement calibration procedure used to generate the error terms.
The routines required to extract error terms from the instrument.
Typical error term data.
Use Table 9-1 to cross-reference error term data to system faults.
RAFT
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RESET
. Listen for the sound of the switch.
efl: EV S22 (B/ )
MEAS
5 5
Accessories Troubleshooting 9-3
and then