User Guide

RM-94

Nokia Customer Care 3 - Service Software and Tuning Instructions

62 COMPANY CONFIDENTIAL Issue 1 04/2005

The spectrum analyzer now shows a plot like this:

Compare the results in the TX IQ Tuning Window with the limits below:

Repeat the IQ tuning for all bands and for all modes by following the instructions from Phoenix

IQ tuning. Always use the highest power level, otherwise a wrong Vbat value will be stored in

the phone memory.

Note: The optimum values for <TX I and Q Offset> and <Amplitude and Phase Difference> vary

from phone to phone.

Please be aware, that the frequency deviation in EDGE mode is 50 kHz, due to the 3 pi / 8

EDGE modulation.

Value Typical Limit min. Limit max.

TX I DC offset 0.1 -6 6

TX Q DC offset 0 -6 6

Amplitude difference 0 -1 1

Phase difference 87.5 78 102

Ref Lvl

35 dBm

Ref Lvl

35 dBm

RBW 3 kHz

VBW 3 kHz

SWT 3 s

RF Att 30 dB

30 kHz/Center 897.4 MHz Span 300 kHz

21 dB Offset

Mixer -20 dBm

Unit dBm

-60

-50

-40

-30

-20

-10

-65

1 [T1] 25.61 dBm

897.33229000 MHz

2 [T1] -22.44 dBm

897.40000000 MHz

3 [T1] -38.76 dBm

897.46771000 MHz

Marker 1 [T1]

25.61 dBm

897.33229000 MHz