Quick Check To Verify High Band Rf Path - Keysight N8973B Service Manual

RF Section Troubleshooting (N8976B)
Troubleshooting

Quick Check to Verify High Band RF Path

Refer to the RF Highband Path #1 Block Diagram (N8976B) in
The High Band signal path (sometimes referred to as Band 1-Band 6) is used
for all signals 3.6 GHz and above. If the start frequency is set to 3.6 GHz and
above, the analyzer displays only the High Band signal path. If the analyzer
start frequency is below 3.6 GHz and the Stop frequency is set above 3.6 GHz,
the analyzer will start sweeping in Low Band up to 3.6 GHz, and then
automatically switch to the high band path above 3.6 GHz.
Equipment needed:
To perform the following checks, it will be necessary to remove the outer cover and the top
brace. See
216
Spectrum Analyzer with frequency range to 14 GHz
Signal source with output power 0 dBm and frequency range to at least the
maximum frequency of the EXA
Power splitter, 11667C
2 each, quality 2.4 mm cables
90° SMA (m) to SMA (f) adapter
MMCX (f) to SMA (f) cable
SMA (f) to SMA (f) adapter
SMA (m) to SMA (m) adapter
3.5 mm (f) to 2.4 mm (m) adapters (2 required)
3.5 mm (m) to 2.4 mm (f) adapter
Chapter 15 for removal procedures.
Keysight NFA Series Noise Figure Analyzers Service Guide
Chapter 12.