User Guide

NPL-4/5 Company confidential
Troubleshooting Instructions Nokia Customer Care
Page 18 Copyright © 2004 Nokia Corporation. All rights reserved. Issue 1 05/04
Measuring RX performance using SNR measurement
- Start Phoenix Service Software and open FBUS connection.
- Select → Scan Product (Ctrl-R)
Wait until phone information is shown in the lower right corner of the screen.
- Set operating mode to “local mode”.
- Select → Testing → RF Controls
- Select → Band → GSM 850 or GSM 900 or GSM1800 or GSM1900
Active unit → RX
Operation mode →Burst
RX/TX Channel → 190 or 37 or 700 or 661
- Select → Testing → SNR Measurement
- Select → Measuring mode → Fast SNR (Radio Button)
- Press → Start
The window “Signal Measurement” pops up informing on frequency and power level of
the signal generator to be set.
- Press “ok” and the window will close.
- Read the SNR results.
The values should exceed:
• GSM 850: > 20 dB
• GSM 900: > 20 dB
• GSM 1800: > 18 dB
• GSM 1900: > 18 dB
The set up should now look like this: