Agilent Technologies E8362B Service Manual page 132

Troubleshooting
Measurement System Troubleshooting
For Port 2 measurements, set the network analyzer for an S
frequency of 1 GHz.
Perform the following checks in the order presented.
Checking the A22 Switch Splitter and A25 and A26 Test Port Couplers
1. Locate the following semirigid cable at the A22 switch splitter:
Standard . . . . . . . . . . . . . . . . . . . . . . . . W5 for Port 1 or W6 for Port 2
Option UNL . . . . . . . . . . . . . . . . . . . . . . W51 for Port 1 or W52 for Port 2
Option 014 . . . . . . . . . . . . . . . . . . . . . . . W61 for Port 1 or W62 for Port 2
Option UNL/014 . . . . . . . . . . . . . . . . . . W51 for Port 1 or W52 for Port 2
2. Using a 5/16-inch torque wrench, disconnect the semirigid cable at the A22 switch
splitter.
3. Connect the spectrum analyzer to the connector. Set the spectrum analyzer to measure
a signal at 1GHz.
4. If the 1 GHz signal is not present, replace the A22 switch splitter. Refer to
and Replacing the A22 Switch Splitter" on page
5. If the 1 GHz signal is present:
Standard . . . . . . . . . replace the appropriate test port coupler. Refer to
Option 014 . . . . . . . . replace the appropriate test port coupler. Refer to
Option UNL . . . . . . . reconnect the semirigid cable and go to
Option UNL/014 . . . reconnect the semirigid cable and go to
Checking the A36 and A37 60-dB Step Attenuators (Option UNL)
1. Locate the following semirigid cable at the appropriate step attenuator:
Option UNL . . . . . . . . . . . . . . . . . . . . . . W53 for Port 1 or W54 for Port 2
Option UNL/014 . . . . . . . . . . . . . . . . . . W81 for Port 1 or W82 for Port 2
2. Using a 5/16-inch torque wrench, disconnect the semirigid cable at the step attenuator.
3. Connect the spectrum analyzer to the step attenuator connector. Set the spectrum
analyzer to measure a signal at 1 GHz.
4. If the 1 GHz signal is not present, replace the appropriate 60-dB step attenuator. Refer
to "Removing and Replacing the A36 and A37 60-dB Source Step Attenuators (Option
UNL)" on page 7-56.
5. If the 1 GHz signal is present, reconnect the semirigid cable and go to
A38 and A39 Bias Tees (Option UNL)" on page
4-50
Replacing the A25 and A26 Test Port Couplers" on page
Replacing the A25 and A26 Test Port Couplers" on page
A37 60-dB Step Attenuators (Option UNL)" on page
A37 60-dB Step Attenuators (Option UNL)" on page
PNA Series Microwave Network Analyzers
measurement with a CW
22
7-42.
"Checking the A36 and
"Checking the A36 and
4-51.
Service Guide E8364-90026
E8362B, E8363B, E8364B
"Removing
"Removing and
7-48.
"Removing and
7-48.
4-50.
4-50.
"Checking the