Service Guide E8364-90038
4- 31
PNA Series Microwave Network Analyzers
Troubleshooting
E8362C, E8363C, E8364C
Measurement System Troubleshooting
Source Group Tests
NOTE
A defective A22 switch splitter can exhibit the same symptom as a faulty source. Therefore,
if it is determined that the source is functioning properly, you are directed to
“Checking the
Signal Separation Group” on page 4-38
.
Equipment Used for These Tests
Getting Ready to Test
Before checking the assemblies, you must open the analyzer.
CAUTION
Use an antistatic work surface and wrist strap to reduce the chance of electrostatic
discharge for all of the procedures in this chapter.
1. Turn off the analyzer power.
2. Unplug the power to the analyzer and disconnect all rear panel connections.
3. Remove the covers from the analyzer. Refer to
“Removing the Covers” on page 7-6
.
4. With the covers off, plug in the analyzer and turn on the power.
Single vs. Broadband Failure
There are two main types of failures that are related to the source group. The failures are classified as:
•
broadband
•
single band
Single band failures are indicated by all four channel traces having partial dropouts across the frequency
range or intermittent phase lock problems. Troubleshooting information is provided under “If the traces
faults are band-related,” under
“All Traces” on page 4-28
.
Broadband failures are indicated by all four channel traces being in the noise floor. Most often this is due to
problems in the phase lock signal path and will be characterized by a “PHASE LOCK LOST” error message on
the display.
Equipment Type
Models
Used With
Model or
Part Number
Alternate Model or
Part Number
Spectrum analyzer
All
8565E
None
Power meter
All
E4418B/19B
E4418A/19A
Power sensor, 3.5 mm
E8362C
8485A
None
RF cable, 3.5 mm (f) to 3.5 mm (f)
E8362C
85131C
Any
Power sensor, 2.4 mm
E8363C, E8364C
8487A
None
RF cable, 2.4 mm (f) to 2.4 mm (f)
E8363C, E8364C
85133C
Any
Summary of Contents for E8362C
Page 11: ...Service Guide E8364 90038 1 1 1 Safety and Regulatory Information ...
Page 21: ...Service Guide E8364 90038 2 1 2 General Product Information ...
Page 33: ...Service Guide E8364 90038 3 1 3 Tests and Adjustments ...
Page 81: ...Service Guide E8364 90038 4 1 4 Troubleshooting ...
Page 137: ...Service Guide E8364 90038 5 1 5 Theory of Operation ...
Page 171: ...Service Guide E8364 90038 6 1 6 Replaceable Parts ...
Page 257: ...Service Guide E8364 90038 7 1 7 Repair and Replacement Procedures ...
Page 341: ...Service Guide E8364 90038 8 1 8 General Purpose Maintenance Procedures ...