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PAMS Technical Documentation
I/Q signals look almost the same regardless if modulation is by "1" or by "0". There is no
significante difference between TXIP and TXIM. The same is valid for TXQP and TXQM.
PCN TransmitterGeneral instructions for PCN TX troubleshooting
Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RF-
cable should be connected to measurement equipment or to at least a 10-dB attenuator,
otherwise the PA may be damaged.
Start Phoenix-Service-Software and establish a connection to the phone e.g. FBUS.
Select File. Choose Product: Gemini
Select: Maintenance, Testing and then RF Controls.
Band:
Active Unit:
Tx Power Level:
Tx Data Type:
Your screen should look like:
Measure the output power of the phone; it should be around 28.5 dBm. Remember the
loss in the jig; around 0.7 dB.
Path of the transmitted PCN signal
Fault finding chart for PCN transmitter
Issue 1 05/02
GSM 1800
TX
0
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ãNokia Corporation
NHM-8NX
Troubleshooting Instructions
Page 37
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Table of Contents
Troubleshooting
