Nokia CardPhone TUNING INSTRUCTIONS 06
PAMS Technical Documentation
Transceiver RPE–1
Chapter 6
RPE–1 TUNING
INSTRUCTIONS
Original, 02/98
Copyright 1998 Nokia Mobile Phones. All rights reserved.
RPE–1
PAMS
Tuning Instructions
Amendment
Number
Technical Documentation
AMENDMENT RECORD SHEET
Date Inserted By Comments
6 – 2
Original 02/98
PAMS
RPE–1
Technical Documentation
RPE–1 TUNING INSTRUCTIONS
Contents
Introduction Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Equipment Page 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Setup Page 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Setup for Tuning Page 6. . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Setup for SW Upgrading with Flash Security Box Page 7
Starting The Software Page 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tuning Steps Page 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. RSSI Reference Signal Level Storage Page 9. . . . . . . . . . . . . .
2. AFC Diagram Storage Page 9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. I/Q Modulator Amplitude Balance and Phase Shift Tuning Page 10
4. Tuning of Transmitter Power Levels Page 12. . . . . . . . . . . . . . . .
Tuning Instructions
Original 02/98
6 – 3
RPE–1
PAMS
Tuning Instructions
Introduction
General
In contrast to earlier second–generation analog cellular phones almost all tuning operations of the RPE–1 are carried out using the service software. The
service software turns the phone into tuning mode, in which the phone can be
outwardly controlled via the M2BUS interface.
Tuning is based on the software communicating with the D/A and A/D converters of the phone. In some instances the phone processor will also calculate the
required correction parameter.
The tuning values of the phone reside on the EEPROM. The contents of the
EEPROM can be read by the service software and saved as a file. This is advisable when there is need to retain that information, e.g. in view of replacement of the circuit. The program also enables writing the default parameters on
the EEPROM, in which case all tuning steps should be carried out.
Technical Documentation
N.B. During tuning, proceed as follows:
– Take care not to damage sensitive measuring instruments with excessive
RF power.
– Carry out all tuning steps in the shortest possible time to avoid excessive
heating of RF units.
– Perform all tuning steps in the order presented.
– Never try to mask a fault by tuning it out!
6 – 4
Original 02/98
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