7-72
Service Guide E8364-90026
Repair and Replacement Procedures
PNA Series Microwave Network Analyzers
Removing and Replacing the A47 and A48 Couplers (Option H11)
E8362B, E8363B, E8364B
Removing and Replacing the A47 and A48 Couplers
(Option H11)
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• 5/16-inch open-end torque wrench (set to 10 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to
for this procedure.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
“Removing the Covers” on page 7-6
. Position the
analyzer bottom side up and raise the receiver deck as shown. Refer to
if necessary.
3. Locate the coupler to be removed; the A47 RF path coupler or the A48 LO path coupler.
The A47 RF path coupler is secured to the analyzer side frame (test set deck) and the
A48 LO path coupler is secured to a bracket which also holds the A19 splitter.
4. To remove the A47 RF path coupler:
a. With a 5/16-inch wrench, disconnect the three semirigid cables from the coupler.
CAUTION
Be careful not to damage the center pins of the semirigid cables. Some flexing
of the cables is necessary for removal. Do not over-bend them.
b. With a T-10 TORX driver, remove the mounting screws holding the coupler.
5. To remove the A48 LO path coupler:
a. With a 5/16-inch wrench, disconnect the three semirigid cables from the coupler and
the three semirigid cables from the A19 splitter.
b. With a T-10 TORX driver, remove the mounting screws from the bracket that holds
the A48 LO path coupler and the A19 splitter.
6. Remove the bracket, with the A48 LO path coupler attached, from the analyzer.
Observe the
CAUTION
above.
7. Remove the A48 LO path coupler from the bracket by removing the attachment screws.
Replacement Procedure
1. Reverse the order of the removal procedure using the existing cables and hardware.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to
Summary of Contents for E8362B
Page 11: ...Service Guide E8364 90026 1 1 1 Safety and Regulatory Information ...
Page 19: ...Service Guide E8364 90026 2 1 2 General Product Information ...
Page 33: ...Service Guide E8364 90026 3 1 3 Tests and Adjustments ...
Page 83: ...Service Guide E8364 90026 4 1 4 Troubleshooting ...
Page 151: ...Service Guide E8364 90026 5 1 5 Theory of Operation ...
Page 185: ...Service Guide E8364 90026 6 1 6 Replaceable Parts ...
Page 269: ...Service Guide E8364 90026 7 1 7 Repair and Replacement Procedures ...
Page 351: ...Service Guide E8364 90026 8 1 8 General Purpose Maintenance Procedures ...