Troubleshooting; Quick Check To Verify The Low Band Signal Path - Keysight n9020a Service Manual

RF Section Troubleshooting

Troubleshooting

Troubleshooting

Quick Check to Verify the Low Band Signal Path

The analyzer has an internal 50 MHz amplitude reference signal that is used to
verify the low band path. Refer to
Equipment needed:
To perform the following checks, it will be necessary to remove the outer
NOTE
cover and the top brace. See
Turn the analyzer on and allow it to complete its full boot up process to
Spectrum Analyzer mode. Use the internal 50 MHz, −25 dBm calibrator signal
as a reference for troubleshooting by pressing Mode Preset, Input/Output, RF
Calibrator, 50 MHz on the analyzer. Now press FREQ (Channel), 50 MHz,
SPAN (X Scale), 1 MHz, Peak Search. The 50 MHz reference signal should
measure 50 MHz @ −25 dBm ± 2 dB on the analyzer display. If the power level
is within tolerance, the low band path is functioning correctly at 50 MHz. To
verify the high band path go to
on page
If the power level is not within tolerance, press SPAN (X Scale), Zero Span,
AMPTD (Y Scale), Attenuation, 10 dB.
Turn off auto align by pressing System, Alignments, Auto Align, Off.
IMPORTANT
Functioning Spectrum Analyzer
DVM
Cables & Connectors
174.
Chapter 11, "Block Diagrams"
Chapter 14 for removal procedures.
"Quick Check to Verify High Band RF Path #1"
146
for details.