Nokia 450 TRANSCEIVER 9p

After Sales Technical Documentation

Appendix 2 – Transceiver THF–9P

Chapter 1

TRANSCEIVER

Original, 01/97

THF–9P

After Sales

Transceiver

CONTENTS

Introduction 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Block Diagram 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Modules 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Specifications 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transceiver General Specifications 2 – 4. . . . . . . . . . . . . . . . . . .

Transmitter Branch 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver Branch 2 – 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RX Synthesizer 2 – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TX Synthesizer 2 – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Exploded View of THF–9 2 – 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly Parts of THF–9 2 – 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List of GP3P EDMS issue 1.3 2 – 9. . . . . . . . . . . . . . . . . . . .

Technical Documentation

Page 1 – 2

Original, 01/97

After Sales

THF–9P

Technical Documentation

Introduction

Functional Description

The transceiver electronics consist of UI module PCB and RF/system PCB.
UI module is connected to system module with a connector. System and rf
submodules are interconnected with PCB wiring. Unit can be connected to
accessories with a bottom system connector, which includes charging and
accessory control.

RF block is designed for a hand portable phone, which operates in NMT450
systems. Purpose of the RF module is to receive and demodulate radio fre­quency signal from the base station and to transmit a modulated RF signal
to the base station.

Block Diagram

THF–9 consist of 2 pcbs, GP3 and GU3F. GP3 consist of 2 submodules,
BASEBAND and RF. The BASEBAND module consists of 3 functional
blocks: PWRU, CTRLU and AUDIO; and the RF module consists of 3 func­tional blocks: RX, SYNT , and TX. The pcb GU3E is the User Interface module
(UIF–module).

Transceiver

PWRU

CTRLU

BASEBAND–submodule

UIF–module

LCDLCD

LCD Driver

AUDIO

MIC/EAR
BUZZER

RX

SYNT

TX

RF–submodule

ANT

DUP

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Page 1 – 3

THF–9P

After Sales

Transceiver

Modules

Transceiver THF–9P 0501118

• system module GP3P 0200977

• display module GU3F 0200779

• mechanics MTHF9P 0261349

Note: When ordering the system module as a spare part use code
0200998

Electrical Specifications

Transceiver General Specifications

Number of channel
Duplex spacing
Channel spacing

Technical Documentation

200
10 MHz
25 kHz

Frequency stability
Antenna impedance
Audio output
Short–code memory locations
Identification number of the dealer,
the date when the telephone will be
delivered to the customer,
subscriber number and locking code
Signalling

Transmitter Branch

Frequency band
Output RF power levels
Spurious signals

Modulation

better than ±1.0 kHz
50

Ω

1.5 mW into 750 ohms
0, 00, 1...99

are programmed in EEPROM
1200–baud FFSK

452.500...457.475 MHz

0.15 W, 1.0 W
< 0.25 µW f=100 kHz...1 GHz

<

1.0 µW f= 1 GHz...4 GHz

FM, pre–emphasis of 6 dB/octave

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Deviation ±

• with 4000 Hz supervisory signal ±
FFSK deviation

• 1200 Hz (”1” frequency) ±

• 1800 Hz (”0” frequency) ±

Harmonic distortion

4.7 kHz max.

5.0 kHz max.

2800 Hz ±400 Hz
4200 Hz ±600 Hz

< 5 %

Original, 01/97

After Sales

THF–9P

Technical Documentation

Audio frequency response

Adjacent channel power
Audio inter–odulation products
Residual modulation

• linear

• psophometric

Audio muting
Compander (SW enabled)

• expansion ratio

• dynamic range

Transceiver

300...500 Hz (+1...–3 dB),

500...2000 Hz (± 1 dB),

2...3 kHz (+1...–3 dB),
pre–emphasis 6 dB / octave

< –70 dB
< –20 dB

< –20 dB (peak)
< –40 dB (RMS)
> 40 dB

1:2

0...–50 dB ±1 dB

Receiver Branch

Frequency band
Sensitivity
Adjacent channel selectivity
Spurious response rejection
Inter–modulation rejection
Blocking
Spurious emission

Audio inter–modulation products
AM suppression
Noise

• without psophometric filter

• with psophometric filter

Harmonic distortion
Audio frequency response

462.500...467.475 MHz
<–113 dBm (20 dB SINAD psoph.)
> 67 dB
> 67 dB
> 67 dB
> 87 dB
< 2.0 nW f=100 kHz...1 GHz

< 20 nW f=1 GHz...4 GHz

< –20 dB (1600 Hz)

> 30 dB

< –20 dB
< –40 dB
< 5 %

300...500 Hz (+1...–3 dB),

500...2000 Hz (± 1 dB),

2...3 kHz (+1...–3 dB),
de–emphasis of 6 dB / octave

Expander (SW enabled)

• expansion ratio

• dynamic range

Original, 01/97

1:2

0...–50 dB ±1 dB

Page 1 – 5

THF–9P

After Sales

Transceiver

RX Synthesizer

Frequency tolerance at startup ±
Frequency range
Output level
Phase noise
Residual deviation
Settling time
CHN–>CHN+1
CHN–>CHN+?

TX Synthesizer

Transmitted frequency difference from

Technical Documentation

2.5 ppm

417.500...422.475 MHz
1 dBm ±2 dB
< –118 dBc/Hz (@25 kHz)
< 50 Hz

< 5 ms
< 25 ms

BS in conversation mode ±
Frequency range
Output level
Phase noise
Residual deviation
Settling time
CHN–>CHN+1
CHN–>CHN+?
Modulation linearity

250 Hz

452.500...457.475 MHz
1 dBm ±2 dB
< –116 dBc/Hz (@25 kHz)
< 50 Hz

< 15 ms
< 35 ms
< 1.5 dB

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Original, 01/97