Agilent Technologies E8362C Service Manual page 127

PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
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
page 6-66. 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
A13 Frequency Offset Receiver Assembly" on page
6. If the signals are present, reconnect W116, and then continue with
(Option 081 Only)" on page
Checking the A45 and A46 Switches (Option 081 Only)
NOTE Before continuing, perform the Operator's check
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
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
page 6-46, and to "Bottom Flexible Cables, All Options" on page
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
3. From the menu, click
Channel
.
OK
4. Set the network analyzer to a CW frequency of 1 GHz.
• The spectrum analyzer should measure a signal at 1 GHz.
5. If the measured signal is not present, replace A46 switch. Refer to
and A46 Reference Channel Transfer Switches (Option 081)" on page
Service Guide E8364-90038
7-24.
4-47.
port.
Source Out
. In the
Test Set Test Set
Measurement System Troubleshooting
"Bottom Flexible Cables, All Options" on
"Removing and Replacing the
"Checking the A45 and A46 Switches
"The Operator's Check" on page
"Contacting Agilent" on page
"Bottom Assemblies, Options 014/080/081" on
6-66. Locate the semirigid cable W60 on
dialog box, click
External: flow through R1 loop
"Removing and Replacing the A45
7-72.
Troubleshooting
3-10. If the
2-12).
. Click
4-47