User Guide
Table Of Contents
- 7 - RF Description & Troubleshooting
- 1. RF Description and Troubleshooting
- 2. RF Implementation in NHL-12
- 3. Introduction to RF troubleshooting
- 4. Receiver Description and Troubleshooting
- 5. Transmitter Description and Troubleshooting
- 6. Additional Information on EDGE Troubleshooting
- 7. Synthesizer Description and Troubleshooting
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Issue 2 10/2004 COMPANY CONFIDENTIAL 21
Copyright © 2004 Nokia. All Rights Reserved.
NHL-12
7 - RF Description & Troubleshooting Nokia Customer Care
Figure 10: Rx I&Q, phase difference 90 deg between signals.
Figure 10, “Rx I&Q, phase difference 90 deg between signals.” :
Detailed view of GSM850 continuous mode Rx I and Q signals measured from test points RXI
and RXQ simultaneously.
Used channel 190, input signal 881.6671 MHz, level –90 dBm at antenna port, AGC setting 12.
Phase difference should be 90 degrees between Rx I and Q signals at all bands.