User Guide

Troubleshooting diagram for GSM900 receiver

Troubleshooting flow

Figure 33 GSM900 receiver troubleshooting

Results

By measuring with an oscilloscope at RXIP or RXQP on a working GSM900 receiver this picture should be seen.

Signal amplitude peak-peak 108mV. DC offset 1.0V.

RH-116; RH-117

RF Troubleshooting Instructions

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