Nokia PermiCell9 TUNING INSTRUCTIONS
PAMS Technical Documentation
TFE–1 TUNING
INSTRUCTIONS
Original 09/97
TFE–1
PAMS
Tuning Instructions
Amendment
Number
Technical Documentation
AMENDMENT RECORD SHEET
Date Inserted By Comments
Page 2
Original 09/97
PAMS
TFE–1
Technical Documentation
TUNING INSTRUCTIONS
Contents
Introduction Page 4
General Page 4
Required Equipment Page 5
Equipment Setup Page 5
Equipment Setup for Tuning a Phone without Removing Covers Page 6
Equipment Setup for Tuning a Phone with Removing Covers Page 7
Starting The Software Page 9
Tuning Steps Page 10
1. RSSI Reference Signal Level Storage Page 10
2. AFC Diagram Storage Page 10
3. I/Q Modulator Amplitude Balance and Phase Shift Tuning Page 11
4. Tuning of Transmitter Power Levels Page 13
Tuning Instructions
Original 09/97
Page 3
TFE–1
PAMS
Tuning Instructions
Introduction
General
In contrast to earlier second–generation analog cellular phones almost all tuning operations of the TFE–1 are carried out using the service software. The service software turns the phone into the locals 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!
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Original 09/97
PAMS
TFE–1
Technical Documentation
Required Equipment
– PC/AT computer with service software; see Sect. 5 for instructions on instal-
lation and use.
– M2BUS adapter DAU–4S and other service accessories; see equipment set-
up pictures.
– Multimeter or DVM.
– GSM radio telephone test station or separate measuring equipment as fol-
lows:
– RF generator
– pulse power meter
– spectrum analyzer
– attenuator and branching unit
Equipment Setup
Tuning Instructions
Caution: Make sure that you have switched off the PC and the printer before
making connections !
Caution: Do not connect the PKD–1 key to the serial port. You may damage
your PKD–1 !
Attach the protection key PKD–1 to parallel port one (25–pin female D–connector) of the PC. When connecting the PKD–1 to the parallel port be sure that you
insert the PC end of the PKD–1 to the PC (male side). If you use a printer on
parallel port one, place the PKD–1 between the PC and your printer cable.
Next, attach the DAU–2T PC/MBUS adapter to the PC serial port, using an
RS–232 9–pin to 25–pin adapter if necessary. Attach one end of the modular
cable XCM–1 to DAU–2T, and the other end to the system connector with the
help of the sevice adaptor AFW–2.
The RF cable should be connected between the RF connector of the test set
and the Antenna 1 connector on TFE–1 with the help of a Mini UHF/BNC
adapter. When the phone covers are removed the RF connection on the extension cable should be used instead.
For audio measurements, connect the service cable, ADS–1, as follows:
– EAR line to AF INPUT of test equipment
– MIC line to MOD GEN OUTPUT of test equipment
Original 09/97
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