Setting WCDMA I WCDMA II WCDMA IV WCDMA V WCDMA VIII
Signal generator
RF level (CW
signal)
-48 dBm -48 dBm -48 dBm -48 dBm -48 dBm
2. Activate WCDMA RSSI reading in Phoenix (Testing —> WCDMA —> Rx Power Measurement) .
3. In the Rx Power Measurement window, make the following settings:
4. Click Start to perform the measurement.
Results
The
Result
reading should reflect the level of the signal generator (- losses) +/- 5 dB.
When varying the level in the range of -40 to -100 dB, the reading should follow within +/- 5 dB.
Note: In some versions of the Phoenix service tool, the
WCDMA Rx Power Measurement
tool does
not work as it should. In these cases, the result is something really small (for example -8387684.9).
Antenna
Antenna overview
RM-750 has four antennas:
•
GSM/WCDMA low band antenna
•
GSM/WCDMA high band antenna
•
WLAN/BT antenna
•
GPS antenna
The RF antennas are located at the lower end of the phone and the WLAN/BT and GPS antennas at the top
part of the phone. The connection from the phone PWB to the antennas is implemented by spring contacts
(3 pcs).
RM-750
Cellular RF troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 5 – 23
Copyright © 2011 Nokia. All rights reserved.
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