Service Guide E8364-90026 4-57
PNA Series Microwave Network Analyzers Troubleshooting
E8362B, E8363B, E8364B Measurement System Troubleshooting
Checking the A13 Frequency Offset Receiver Band 0 Output
Perform this procedure if you observe a problem in band 0 and all signals from the A12
source 20 output are present.
1. Refer to the block diagram at the end of this chapter and to “Bottom Flexible Cables, All
Options” on page 6-64. Locate the flexible cable W116 at the frequency offset receiver
output.
CAUTION
Be careful not to damage the center pins of the semirigid cable. Some flexing
of the cables is necessary to measure the output.
2. Disconnect the flexible cable at the frequency offset receiver.
3. Connect the spectrum analyzer to the frequency offset receiver connector J6.
4. Set the network analyzer to a CW frequency of 25 MHz.
• The spectrum analyzer should measure a signal at 1.04 MHz.
5. If the measured signal is not present, Replace the A13 receiver. Refer to “Removing and
Replacing the A13 Frequency Offset Receiver Assembly” on page 7-24.
6. If the signals are present, reconnect W116, and then continue with “Checking the A45
and A46 Switches (Option 081 Only)” on page 4-57.
Checking the A45 and A46 Switches (Option 081 Only)
NOTE
Before continuing, perform the Operator’s check “The Operator’s Check” on
page 3-11. If the instrument passes the operator’s check then the A45 and
A46 switches are ok.
If you are still experiencing problems, and your instrument has passed all
troubleshooting tests to this point, then contact Agilent (refer to “Contacting
Agilent” on page 2-13).
Perform this procedure if the instrument has passed all the frequency offset receiver tests
but fails the operator’s check and the problem appears to be at the A45 or A46 switches.
• Refer to the block diagram at the end of this chapter, to “Bottom Assemblies, Options
014/080/081” on page 6-44, and to “Bottom Flexible Cables, All Options” on page 6-64.
Locate the semirigid cable W60 on the front panel. Locate the semirigid cables W96 and
W99 at the A45 switch input and A45 output respectively.
CAUTION
Be careful not to damage the center pins of the semirigid cable. Some flexing
of the cables is necessary to measure the output.
1. Disconnect the W60 semirigid cable from the front panel.
2. Connect the spectrum analyzer to the
Source Out port.
3. From the
Channel menu, click Test Set. In the Test Set dialog box, click External: flow
through R1 loop
. Click OK.
4. Set the network analyzer to a CW frequency of 1 GHz.
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