256 E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
Assemblies That You Can Replace
— “A38 Lowband Switch Filter” on page 377
— “A39 Directional Sweep Coupler” on page 379
— “A40 Compact Flash Drive Assembly” on page 381
— “A41 Flash Drive Door Assembly” on page 383
— “A42 20 GHz Power Amp (Option 521)” on page 385
— “A43 Lowband Amp Filter” on page 387
— “A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only)” on
page 389
— “AT1 90 dB Attenuator” on page 391
— “AT1 115 dB Attenuator” on page 393
— “AT1 90 dB Attenuator (Option 1EM)” on page 395
— “AT1 115 dB Attenuator (Option 1EM)” on page 397
— “B1 Fan” on page 399