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Assembly Replacement Sequence
The following steps show the sequence to replace an assembly in the network
analyzer.
1. Identify the faulty group. Refer to Chapter 4, "Start Troubleshooting Here."
Follow up with the
faulty assembly.
2. Order a replacement assembly. Refer to Chapter 13, "Replaceable Parts."
3. Replace the faulty assembly and determine what adjustments are necessary.
Refer to Chapter 14, "Assembly Replacement and Post-Repair Procedures. n
4. Perform the necessary adjustments. Refer to Chapter 3, "Adjustments and
Correction Constants, n
5. Perform the necessary performance tests. Refer to Chapter 2, "System
Verification and Performance Tests. *
Before You Start Troubleshooting
1.
Make sure all of the assemblies are lirmly seated.
2.
Make sure that input R has a signal of at least -35 dHm (about 0.01 Vp-p into
50 ohms) at all times to maintain phase lock. 'Ib make this measurement,
perform the following steps:
a. Perform steps 1 and 2 of the "Source Pretune Correction Constants"
procedure located in Chapter 3. Make note of the DAC number that is
displayed and then abort the procedure.
c. Enter the DAC number determined from step a and press (GiJ.
d. Disconnect the front panel R CHANNEL jumper.
e. Zero and calibrate a power meter. Measure the power at R CHANNEL
OUT.
appropriate troubleshooting chapter
that identifies the
Source Troubleshooting 7-3
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Table of Contents
Troubleshooting
