Auto Tuning; Introduction To Rf Tunings - Nokia RM-529 Service Manual

RM-529; RM-530; RM-584
RF Troubleshooting
Figure 18 Antenna matching components - top

Auto tuning

Introduction to RF tunings

RF tuning is always performed with the help of a product-specific module jig, never with an RF coupler. Using
an RF coupler in the tuning phase will cause a complete mistuning of the RF part.
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 RF losses are frequency dependent, the user has to act very carefully and understand the measurement
setup. For RF attenuations of the module jig and RF cable, please refer to the Service Tools section.
Auto tuning
This phone can be tuned automatically.
Issue 1 COMPANY CONFIDENTIAL Page 4 –7
Copyright © 2009 Nokia. All rights reserved.