Keysight NFA Series Noise Figure Analyzers Service Guide 135
RF Section Troubleshooting (N8973B, 74B, 75B Analyzers)
RF Section Description
The RF section is comprised of the following major assemblies:
— A9 Input Attenuator A
— A10 Input Attenuator B
— A11 Low Band Switch Assembly
— A12 YTF Preselector
— A14 L.O. Synthesizer Assembly
— A13 RF Front End Assembly
— A15 Front End Control Assembly
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