User Guide

RH-26 Company Confidential

5 - Service Software Instructions CCS Technical Documentation

Transmitter Tunings

TX I/Q tuning

Spectrum analyzer is needed.

With the help of Tx IQ tuning, you can change the Tx I DC offset, Tx Q DC offset, ampli-

tude difference and phase difference.

Must be done separately on all bands!

TX I/Q tuning steps are:

• EGSM (GSM850) with EDGE off

• EGSM with EDGE on,

• GSM1800 with EDGE off

• GSM1800 with EDGE on

• GSM1900 with EDGE off

• GSM1900 with EDGE on

Remember to take jig and cable attenuations into account!

To start tuning:

1 From the “Tuning” menu, choose “TX IQ Tuning”.

EGSM850 band with EDGE Off

2 To begin tuning at EGSM 850 band with EDGE off, click “Start”.