Nokia RM-57 Service Manual page 212

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5. When the values have been written to the phone memory, click the Finish button to end the tuning.
6. Change band to GSM1800 and repeat steps 4 to 5.
7. Change band to GSM1900 and repeat steps 4 to 5.
8. To close the tuning window, click Close.
Next action
Tuning sliders should be close to the center of the scale after the tuning and within the limits specified in the
table below. If they are not within the limits, check Tx IQ quality manually.
GSM850/GSM900
I DC offset / Q DC
offset
Ampl
Phase
GSM1800/GSM1900
I/Q DC
Ampl
Phase
Page 7–32
Min
-6
-1
85
-6
-1
95
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RF Troubleshooting and Manual Tuning Guide
Typ
-4
0
90
0.5
0
100
Max
6
1
95
6
1
110
RM-57/58
Unit
dB
dB
dB
dB
dB
dB
Issue 1