Troubleshooting
Measurement System Troubleshooting
Checking the Receiver Group
Equipment Used for These Tests
Equipment Type
Spectrum analyzer
1. Must be capable of measuring signals at 8.333 MHz and 41.667 MHz.
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 (refer to
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
4. With the covers off, plug in the analyzer and turn on the power.
5. For Port 1 measurements, set the network analyzer for an S
GHz.
For Port 2 measurements, set the network analyzer for an S
GHz.
Checking the A27 through A30 First Converter Outputs
Perform this procedure if you observe a problem in all bands on a single channel.
1. Refer to the block diagram at the end of this chapter and to
page
6-66. Locate the cables W21, W22, W23, and W24 at the first converters, A27, A28, A29, and A30,
respectively.
2. Using a 5/16-inch torque wrench, disconnect the semirigid cable associated with the faulty channel,
from the first converter.
3. Connect the spectrum analyzer to the connector to which this cable was connected.
4. The measured signal on the spectrum analyzer should be at 8.333 MHz.
5. If the signal is not present, replace the faulty first converter. Refer to
A28, A29, and A30 First Converters (Mixers) and Mixer Bias Board" on page
6. If the signal is present, reconnect the cable and continue with
Outputs" on page
4-43.
4-42
Models
Used With
All
"Protect Against Electrostatic Discharge (ESD)" on page
"Removing the Covers" on page
PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
Model or
Alternate Model or Part
Part Number
Number
8565E
856xE
7-6.
measurement with a CW frequency of 1
11
measurement with a CW frequency of 1
22
"Bottom Flexible Cables, All Options" on
"Removing and Replacing the A27,
7-52.
"Checking the A31 through A34 Receiver
Service Guide E8364-90038
1
4-3).