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Analog/Digital IF Troubleshooting
A3 Digital IF Troubleshooting
A3 Digital IF Troubleshooting
Verifying the 22.5 MHz Input Power
1. Perform an instrument shutdown.
2. Remove the cover of the PXA Signal Analyzer. Refer to
3. Turn the instrument over so that the bottom side of the analyzer is facing
4. Turn on the PXA Signal Analyzer and wait for the instrument to complete
5. Press System, Alignments, Auto Align, Off
6. Press Input/Output, RF Calibrator, 50 MHz
7. Verify the 50 MHz signal is at −25 dBm by pressing FREQ, 50 MHz, SPAN,
8. To continue verifying press SPAN, Zero Span. Verify the input attenuator
240
"Assembly Replacement Procedures", on page 417
up.
the boot up process.
1 MHz, Peak Search on the analyzer. The marker readout should be
50 MHz at −25 dBm ± 3 dB. If this reference signal is measuring
incorrectly, see
Chapter 4, "RF Section Troubleshooting (RF/Microwave
Analyzers)", on page 147
on the PXA is set to 10 dB. Look near the top of the display near the center
and verify Atten: 10 dB is visible. If needed change the input attenuator by
pressing AMPTD, Attenuation, 10 dB on the analyzer.
in this service guide.
N9030A PXA Signal Analyzer Service Guide
Chapter 16,
in this service guide.
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Table of Contents
Troubleshooting
