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HP 85106D mm-Wave System
5-13
HP 85104A Test Set Module
Troubleshooting Procedures
Switching Mixers
(A11, A12)
Procedure 3
Before beginning this procedure, turn power to the HP 85105A mm-wave
controller OFF. Disconnect the HP 85104A from the HP 85105A. This
procedure assumes that the isolators are located in their original modules.
Refer to the step references in Figure 5-11 on page 5-32.
1. Remove the IF and LO cables from the mixer inputs (Step 7 and
Step 13).
2. Disconnect the isolator at the mixer interface (Step 15 and Step 16).
3. Remove the mixer bracket (Step 14).
4. Replace the mixer with the mixer from the opposite auxiliary arm or
with a mixer from another test set module.
5. Attach the new mixer to the isolator and connect the IF and LO input
cables. Be sure to use correct waveguide connection techniques (refer to
“Waveguide Connections” on page 2-9 for waveguide connection
information).
6. Connect the mixer clamp.
7. Reconnect the cables from the HP 85104A to the HP 86105A. Turn the
HP 85105A ON. Recheck the unratioed power levels (refer to
8. Return to the troubleshooting flowchart.
Summary of Contents for 85106D
Page 11: ...x HP 85106D mm Wave System ...
Page 117: ...4 24 HP 85106D mm Wave System Service and Troubleshooting Check Unratioed Power Levels ...
Page 139: ...5 22 HP 85106D mm Wave System HP 85104A Test Set Module Troubleshooting Procedures ...
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Page 238: ...B 2 HP 85106D mm Wave System Upgrade Paths ...
Page 243: ...HP 85106D mm Wave System v work surface installation 1 12 ...
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