Rh-53/54 Manual Alignment With Phoenix; Manual Alignment With Phoenix; Rx Calibration - Nokia 2650 Service Manual

RH-53/54

RH-53/54 Manual Alignment with Phoenix

Manual alignment with Phoenix

The alignment/calibrations are the same in both GSM900/850 and GSM1800/1900 except for
the channels and frequencies. Only the procedures for GSM900/GSM1800 are shown.
The attenuation values for GSM850 are similar to the ones for GSM900, and the ones for
GSM1900 to GSM1800. The difference can be 1-2 dBs.
In Phoenix select connection Fbus scan product. If you power up the board before selecting
Fbus, it works without any error messages. Use Jig or other device for RF and bus connection.
Attenuation in the probe alone is 0dB for 900 and 0.1dB for 1800.
Use CMD55, CMU200 or other suitable device. Default channels are
• GSM850: ch. 190
• GSM900: ch. 37
• GSM1800: ch. 700
• GSM1900: ch. 661
The alignments and calibrations must be performed in the order shown in Phoenix to give reli-
able results. The way to save data to the phone and to load data from the phone is made dif-
ferent in the various tunings. Always look what is shown in the windows regarding these issues
and act accordingly. In some windows the saving is done without any warning or second ap-
proval as soon as you stop or end. To vary a selected parameter you can use + and – key or
in some cases directly type the new value. + and – steps the value for every press. Repeat
function seems not to work. In I/Q you can use the side arrows.

RX calibration

Select Tuning, RX Calibration
Select Band, for example GSM900
Note: You must first tune the lower band to be able to tune the higer band. You can stop at any
time by switching off the menu. If the values are outside internal specifications, you can not save
them and you will have to leave the tuning without saving.
Press start and follow the description in Phoenix, setting up the signal generator as described
Issue 2 06/2005 COMPANY CONFIDENTIAL
Copyright © 2005 Nokia. All Rights Reserved.
Nokia Customer Care
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