Rx Channel Select Filter Calibration - Nokia RH-37 Series Service Software And Tuning Instructions

RH-37
Service Sofftware and Tuning Instructions
Channel Number
(as indicated in the < Rx Band Filter Response Compensation >
window)
Meas. point GSM900
First 965
N1 975
N2 987
N3 1009
N4 37
N5 90
N6 114
N7 124
Last 136

RX channel select filter calibration

In the following, the calibration of the Rx channel select filter (BB-filter) inside the FR-
ASIC is described. It is performed by internal measuring of a proto-type filter. For this
reason, the calibration has to be done only once. No RF signal generator is needed. No
GSM band has to be selected in Phoenix.
Rx channel select filter calibration is always the first tuning in the tuning sequence.
Set the operating mode to local mode.
Select
The setup should now look like this:
Page 54
GSM1800
497
512
535
606
700
791
870
885
908
Tuning
Rx Channel Select Filter
Calibration
Nokia Corporation
Limits
(of < Measured Level
Difference >)
GSM1900 Low
497 -6.0 dB
512 -3.0 dB
537 -3.0 dB
586 -3.0 dB
661 -2.0 dB
736 -3.0 dB
794 -3.0 dB
810 -3.0 dB
835 -6.0 dB
Nokia Custome Care
High
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
+2.0 dB
Alt-U
Alt-H
Issue 1 07/04