Measurement Points In The Receiver - Nokia RM-392 Service Manual

RM-392; RM-393
RF Troubleshooting Instructions
Results
By measuring with an oscilloscope at RXIP or RXQP on a working GSM1900 receiver this picture should be
seen. Signal amplitude 108 mVp-p. DC offset 1.0V.
Figure 61 1900 RX I/Q signal waveform

Measurement points in the receiver

Figure 62 RX measurements point of the control voltages to FEM N7700
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