User Guide

3. Click Start to perform the measurement.

Transmitter troubleshooting

General instructions for transmitter (TX) troubleshooting

Please note the following before performing transmitter tests:

• TX troubleshooting requires TX operation.

• Do not transmit on frequencies that are in use!

• The transmitter can be controlled in local mode for diagnostic purposes.

• The most useful Phoenix tool for GSM transmitter testing is “RF Controls”; in WCDMA transmitter testing

the best tool is “TX Control”.

• Remember that re-tuning is not a fix! Phones are tuned correctly in production

Note: Never activate the GSM or WCDMA transmitter without a proper antenna load. Always connect

a 50 Ω load to the RF connector (antenna, RF-measurement equipment or at least a 2 W dummy

load); otherwise the GSM or WCDMA Power amplifier (PA) may be damaged.

GSM transmitter troubleshooting

Steps

1. Set the phone to local mode.

2. Activate RF controls in Phoenix (Testing→GSM→Rf Controls ).

Make settings as shown in the picture:

RA-6

RF troubleshooting

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