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L.O. Synthesizer/Reference Troubleshooting
A16 Reference Assembly Troubleshooting
A16 Reference Assembly Troubleshooting
NOTE In order to measure signals on analyzers with serial prefix < MY/SG/US5233,
you will need to remove the rear panel. Refer to “Rear Panel” removal
procedure on page 486 for details.
If the A16 Reference Assembly is suspect, verify the reference signals, local
oscillator output frequencies, and power levels as per Table 7-2 using a
functioning spectrum analyzer.
The board layout in Figure 7-8, Figure 7-9, and Figure 7-10 (depending on
serial prefixes) below identifies the input and output connectors and LEDs on
the A16 Reference Assembly.
If these outputs measure correctly, the A16 Reference Assembly is functioning
correctly. If not, the Reference Assembly is the most probable cause provided
the power supply is operating correctly. Refer to “A7 Midplane Assembly
Troubleshooting” on page 327 if the power supplies are suspect.
Figure 7-8 A16 Reference Assembly, Serial Prefix > MY/SG/US/5233
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