User Guide

Troubleshooting diagram for GSM 900 receiver

Figure 31 GSM 900 Receiver troubleshooting

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

Signal amplitude 114mVp-p. DC offset 1.0V.

RH-70

RF troubleshooting Nokia Customer Care

9243364 (Issue 1, Part 2) Company Confidential Page 2–9