Transmitter Tuning Operations; Tx I/Q Tuning - Nokia NHM-1 Series Software Instructions

CCS Technical Documentation

Transmitter Tuning operations

TX I/Q Tuning

• Spectrum analyzer needed
• Tx IQ Tuning allows changing the Tx I DC Offset, Tx Q DC Offset,
Amplitude difference and Phase difference
• TX I/Q tuning starts (GSM900), then continues RX Calibration at
GSM1800 band
• Remember to take jig and cable attenuations into account!
Select Tuning =>GSM =>TX IQ Tuning
Select "Start"
The tuning is done by setting each of the sliders to desired value. The sliders can be
changed only when the tuning is ongoing.
The order of tuning should be same as the order of the sliders e.g. the Tx I DC Offset is
tuned first and Phase difference is tuned last.
Issue 1 11/03
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