Rf Autotuning - Nokia RM-132 Service Manual & Parts Manual

Nokia Customer Care
Note: RF calibration is always performed with the help of a product-specific module jig, never with
an RF coupler. Using an RF coupler in the calibration phase will cause a complete mistuning of the
RF side.
Important:
in rare cases.
Cable and adapter losses
RF cables and adapters have some losses. They have to be taken into account when the phone is tuned. As
all the RF losses are frequency dependent, the user have to be very careful and understand the measurement
setup. The following table presents the RF attenuations of the product-specific module jig:
GSM850
GSM900
GSM1800
GSM1900
WCDMA 2100

RF autotuning

Prerequisites
For information on the recommended test set-up, refer to the corresponding information on the Partner
Website or Nokia Online.
Before you can use the autotuning feature, the GPIB driver from the GPIB card vendor must be installed and
running.
The autotune .xml file must be in a correct place: C:\Program Files\Nokia\Phoenix\products\xx-x*
*= indicates the type designator of the phone, e.g. RM-1 )
\rfconf_xx-x*.xml (
Context
RF autotuning is performed with the aid of a digital radio communication tester.
Autotuning covers all RF tunings that are needed to perform after RF component repairs.
Note: Do not perform RF autotuning without a proper reason. Autotuning may only be performed
after component repairs or if the RF tuning information is lost.
Steps
1. Connect the communication tester to the GPIB bus.
Phoenix service software.
2. Start
3. Choose Tools→Options→GPIB Card.
4. From the Card Type drop-down menu, choose the GPIB card used, then click Start.
The name of the communication tester appears in the Listeners pane.
Page 7 –24
After RF component changes, always use autotuning. Manual tunings are only required
Band
COMPANY CONFIDENTIAL
Copyright © 2006 Nokia. All rights reserved.
RF Troubleshooting and Manual Tuning Guide
Attenuation
0.25dB
0.25dB
0.4dB
0.45dB
0.5dB
RM-132; RM-133
Issue 1