RH-128
RF Description and Troubleshooting
Figure 9: FTM dialog box
Cell Receiver Check from RF to IQ
When the AMS is ready for Cell RX troubleshooting, if the received power of the DSPM Rfc RXTX is not
close to the signal generator there is a problem in the RX line. First, test the DC points of the RX DC supply
lines as according to Table 3. Then test the RF trace.
1. Inject a –75 dBm CW signal of 881.82 MHz (i.e. 300 kHz offset from 881.52 MHz or 10
channels away).
2. Measure a 300 kHz tuning on the analyzer. You should see a typical -52 dBm IQ tuning for
CDMA Cell.
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