User Guide

Nokia Customer Care RF Description and Troubleshooting

2115i/2116/2116i (RH-66)

AMPS Receiver Check from RF to IQ

Use the following steps to check the AMPS receiver functionality from RF to IQ output.

1. Start Phoenix in Local Mode with only the Rx path turned on.

2. Inject a –75 dBm CW signal of 881.53 MHz (i.e., 10 kHz offset from 881.52 MHz)

into the RF.

3. Measure a 10 kHz tone on the analyzer. You should see a typical -20 dBm IQ tone

for AMPS.

Figure 14: Receiver IQ Level on AMPS band

Figure 15 shows the AMPS spectrum with an inject tone at -75 dBm, as well as the IQ

output test points. Note that DC is present on the IQ output test points, and all test

points should be approximately equal.