M850-00
T855 Fault Finding
B5.7
Copyright TEL 31/09/98
Check that the swept response has a rounded top and no sharp non-linearities
(refer to Figure 5.2).
Increase the RF level to -50dBm; the trace will now show the shape of the 455kHz
ceramic filter (&XF302).
Check that the response has no sharp non-linearities.
If sharp non-linearities do occur, replace the filter and sweep again to confirm a
satisfactory solution (refer to Figure 5.3).
Figure 5.2 IF Swept Response Figure 5.3 Ceramic Filter Swept Response
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