20 Installation Note N9030-90045
Option BBA, Analog Baseband I/Q Inputs Retrofit Kit
Instruments with the Switch Assembly
1. Position the switch assembly, removed earlier in its mounting location, being careful to align the
semi-rigid cable with the switch ports. Assure the lower threaded mounting tab is behind the low
band switch bracket. Do not attach the switch bracket with screws yet.
2. Assure the gray coax cable is routed under the switch bracket, laying on top of the switch body.
3. Reinstall W52 and tighten W54 and W53. Attach cables W2 and W8. Reinstall W51. Torque to
10 inch-pounds.
4. Attach the switch assembly using the 3 screws removed previously
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