144 Chapter 5
Digital IF Troubleshooting
A3 Digital I.F. Troubleshooting
12.The analyzer should read 10 MHz at +5 dBm ± 3 dBm as shown in Figure 5-4.
Figure 5-4 A2 Digital I.F. Reference Input
If the 22.5 MHz and 10 MHz signals measure the correct frequency and
amplitude and yet the display is not processing the signal properly, the most
probable causes are the A2 Digital IF or the A3 CPU. It is difficult to separate
these two assemblies given the architecture of the analyzer. Each assembly will
have to be tried to see which one is causing the failure.
To Next Page
Loading...
