Keysight NFA Series Noise Figure Analyzers Service Guide 399
Assembly Replacement Procedures
RF Area (N8973B, 74B, 75B)
RF Area (N8973B, 74B, 75B)
Refer to Figure 15-7. The RF area consists of RF attenuator A (1), RF
attenuator B (2), low band switch assembly (3), and YTF Preselector (4).
Figure 15-7 RF Area Components and Cables
The YTF Preselector is not typically installed on the N8973B.