Nokia 6090 Service Manual techinfo

Programmes After Market Services

NME–3 Series Transceivers

Technical Information

Issue 1 10/99

NME–3 Technical Information

Technical Documentation

CONTENTS

Introduction 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Powerdown Mode: 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Idle Mode 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

normal mode 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

timer mode 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Call Mode 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HF voice call 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HS voice call 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data call 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Distribution 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Protection Circuits 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supply – Handset 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Signals and Connections 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Connector 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Connector 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Internal Signals and Connections 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SYS Conn Block Conections 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio Block Connections 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio Connection to Handset 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handsfree Audio Path 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handset Audio Path 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handsfree Loudspeaker 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handsfree Microphone 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specification for microphone input 21. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transceiver (NME–3) 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Baseband 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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CCONT for CD949 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handset interface 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multiplexing the Busses 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SIM Card in RU 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power up/Power down procedure 33. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description of the Brownout circuit 36. . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Ratings 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Distribution 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Functional Description 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver Characteristics 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver Module Specification 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter Characteristics 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sub Block Description/Tables 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Synthesizer 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Antenna 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handset (RTE–2HJ) 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power up/Power down procedure HS 61. . . . . . . . . . . . . . . . . . . . . . . . .

D.C. Characteristics 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Signals and Connections 63. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cradle (CRD–8)) 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Description 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Information

Cradle Concept 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

List of Figures

Figure 1. Power Supply Block Diagram 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2. Power Supply Blockdiagram 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3. Signals and Connections 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4. CD 949 System overview 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 5. Digital interface in GM8B 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6. HS audio interface 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 7. Audio Paths for Hands–Free 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 8. Audio Path – Hand–Set 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 9. Write cycle timing. 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 10. Regular Startup 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 11. Invalid wakeup (ignored) 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 12. SW crash + Restart 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 13. Regular Shutdown 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 14. Brownout procedure total powerdrop 37. . . . . . . . . . . . . . . . . . . . .

Figure 15. Power distribution diagram 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 16. Block diagramm of the CD949 GSM RF part 43. . . . . . . . . . . . . .

Figure 17. RF frequency plan 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 18. Phase locked loop , PLL 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 19. Power distribution diagram 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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NME–3 Technical Information

Technical Documentation

A3 Schematics/Layouts

Radio Unit GM8B_06 A–1 – A20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handset A–21– A28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Radio Unit GM8B_07 A–29 – A47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note: In printed manuals all A3 drawings are located at the back of the binder

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Amendment 11/99

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NME–3

Technical Documentation

Introduction

The CD949 has 3 Basic Operating Modes, divided into submodes:

Powerdown Mode:

In powerdown mode the complete system is switched off, it is not in service and consumes a minimum of current.

Idle Mode

normal mode

In idle mode the phone is switched on and in service (if inside network coverage).

timer mode

When Ignition is switched off the phone goes in to timermode. This means that the phones stays in idlemode for a specified time and switches itself off if no action from the user takes place.

Technical Information

Call Mode

HF voice call

Handsfree voice call

HS voice call

Handset voice call

Data call

Receive transmit data

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NME–3 Technical Information

Power Distribution

Power is supplied to the system via the System–Cable or SCM5 (longer one). The Figure below shows an overview of Power Supply and Protection Circuits

Carbat+

Carbat–

PowerOn

LineFilter

TVS

Si Switch

Aux Protect

Technical Documentation

12V Supply

8V Regulator

8V Supply

PAMS

Supply Monitor

Figure 1. Power Supply Block Diagram

Table 1. Supply Voltages and Power Consumption

Pin / Conn. Line Symbol Minimum Typical /

1/System

17/System

VBATT 0

VBATT 1.5

LoPower Regulator

_OVERVOLTAGE _POWERF AIL _POWERCRITICAL

Nominal

10.8 16

13.5

150

Feedback

Maximum Unit / Notes

10.8 16 28

4 500 1

Post–Regulator / LoPower Bypass

V/ no operation

V/ reduced operation

V/ nomal operation V/ no Operation

A Callmode mA Idle mode mA Powerdown mode

3.8V Supply

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Table 2. External Signals

Pin / Conn. Line Symbol Minimum Typical /

Nominal

11/System Ignition 9

3/System Backlightdimming 9

4/System Antenna motor

control

20/System Car radio mute

21/System FBUS Rx 5/System FBUS Tx

13% 60

V–BATT–1 VBATT

13.5 16

Technical Information

Maximum Unit / Notes

V / ON

0.6

100% 100

0.3 100

0.3 V–BATT

V / OFF V / High voltage

% / Duty Cycle Hz / Frequency

V / ON V / OFF mA/ Current

V / Voicecall active

V / inactive kW / external pullup resistance

23/System MBUS Handset 22/System MBUS Test/Flash 28/System HFMic 92 843 mVrms 32/System HF P 234 2828 mVrms 31/System HF N 234 2828 mVrms 14/System Line out P 70 2000 mVrms 13/System Line out N 70 2000 mVrms 9/System HSEar N 28 802 mVrms 10/System HSEar P 28 802 mVrms 26/System HSMicN 87 790 mV Microphone –

to microphone +

25/System HSMicP 87 790 mV Microphone +

microphone – 8/System HS Powerbutton 1/Data DCD +/– 3.3 +/– 15 V/ inactive

V /active 2/Data Received Data

(output)

+/– 3.3 +/–15 V / binary state 1

V / binary state 0 3/Data transmitted data

(input

4/Data DTR +/– 3.3 +/– 15 V / inactive

5/Data GND 0 V/ reference

6/Data DSR +/– 3.3 +/– 15 V / inactive

+/– 3.3 +/– 15 V/ binary state 1

V/ binary state 0

V / active

ground

V/ active

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Technical Documentation

Table 2. External Signals (continued)

MinimumLine SymbolPin / Conn.

Nominal

7/Data RTS +/– 3.3 +/– 15 V / inactive

8/Data CTS +/– 3.3 +/– 15 V / inactive

9/Data RI +/– 3.3 +/– 15 V / inactive

Unit / NotesMaximumTypical /

V/ active

Protection Circuits

Power is first filtered and protected agains Voltages>30V and Reverse Voltage. The Supply Monitor switches off the 12V Supply via Si–Switch at supply Voltages > 16.25V. Aux–Protect clamps peak pulses that are not covered by the Supply Monitor. Three signals are provided to detect different supply–voltage levels by other hard– and software: _OVERVOLTAGE is active at >16.25V, _POWERFAIL at <10,9V. _POWERCRITICAL is active at a drop of more than 5% on 3.8V Supply. A LowPower Regulator is used for sleep power for CCONT and MAD.

Three different Voltages are used in CD949. 3.8V for CCONT (VBCCONT), 8V for RF–PREAMP, AUDIO and for VBCCONT Regulator,HS and 12V for RFPA, Audio PowerAmp. 12V and 8V can be switched by PowerOn and automatically by _OVERVOLTAGE.

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Power Supply – Handset

Power is supplied to the HS via cable from RU. The Figure below shows an overview of Power Supply and Reset Circuits.

LineFilter

GND

Supply Monitor

5V Regulator

3V Regulator

FIL TER

Technical Information

8V Backlightdiming

5V Audio

5V Digital

RESET Generator

_RESOUT

SUPPLOWINT

Figure 2. Power Supply Blockdiagram

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NME–3 Technical Information

External Signals and Connections

CD949 has three external connectors: – System Connector – Data Connector – RF Connector

System Connector

Table 3. External Signals

PAMS

Technical Documentation

Pin / Conn. Line Symbol Minimum Typical /

Nominal

19/System Ignition 9

3/System Backlightdimming 9

13% 60

4/System Antenna motor con-

trol

20/System Car radio mute

21/System FBUS Rx 5/System FBUS Tx 23/System MBUS Handset 22/System MBUS Test/Flash 28/System HFMic 92 843 mVrms 31/System HF P 234 2828 mVrms 32/System HF N 234 2828 mVrms

9 VBATT

13.5 16

Maximum Unit / Notes

V / ON

100% 100

0.3 100

0.3 16

V / OFF

V / High voltage

% / Duty Cycle

Hz / Frequency

V / ON

V / OFF

mA/ Current

V / Voicecall active

V / inactive

kW / external pullup

resistance

14/System Line–out P 70 2000 mVrms 13/System Line–out N 70 2000 mVrms 9/System HSEar N 28 802 mVrms 10/System HSEar P 28 802 mVrms 25/System HSMicP 87 mV Microphone +

microphone – 26/System HSMicN 87 mV Microphone –

microphone +

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Technical Information

Data Connector

The CD949 transceiver unit GM8B has 3 digital interfaces between the MAD and external devices. These are the data or RS232 interface, to use the transceiver as modem. The handset interface used for communication between the radiounit and the handset, and the Test and Flash interface, needed for production and after sales purposes. All of these interfaces are implemented using the M– and F–Bus coming from the MAD.

Table 4. Data interface Spec RS 232

Signal

name

RS232 DCD

RS232TXOutput +– 3,3V .. 15V PIN 2 RS 232 interface for dataaplications and remo-

RS232RXInput +– 3,3V .. 15V PIN 3 RS 232 interface for dataaplications and remo-

RS232 DTR

Signal-

type

Output +– 3,3V .. 15V PIN 1 Handshake: Data Carrier Detect

Input +– 3,3V .. 15V PIN 4 Handshake: Data Terminal ready

electrical spec Pinnum-

ber

Notes

tecontrol aplications using advanced At–commandset

GND Power-

supply

RS232

DSR RS232

RTS/ RS232

CTS RI Output +– 3,3V .. 15V PIN 9 handshake: Ring Indication

Output +– 3,3V .. 15V PIN 6 Handshake: Data Set Ready

Input +– 3,3V .. 15V PIN 7 handshake: ready for receiving

Output +– 3,3V .. 15V PIN 8 handshake: Clear to send

0V DC GND PIN 5

All Signals converted from RS232 level to 2.8V with a normal RS232 Levelconverter which has an own chargepump. All handshake signals are controlled by the MAD via the Row/Col pins originally used for the keyboard . The RX and TX signals are connected to the F–Bus that is shared with the Testinterface.

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NME–3 Technical Information

SIM Connector RU

PAMS

Technical Documentation

Table 5. SIM–Card interface

Pin Line Symbol Minimum Typical /

Nominal

1 VCC 4.5

2.7

2 Reset 0

4.3 0

2.4

3 CLK 0

3.5 0

2.1

1 3.25

4 N.C. reserved for future use

Maximum Unit / Notes

5.5

3.3 10

0.6

VCC

400

0.6

400

0.5

0.6

3 9% of period 9% of period

50 50 55

V / supply voltage for 5V cards V / supply voltage for 3V cards mA / supply current for 5V cards mA / supply current for 3V cards

V / low voltage for 5V cards V / high voltage for 5V cards µs / rise and falltime V / low voltage for 3V cards V / high voltage for 3V cards µs / rise and falltime

V / low voltage 5V cards

V / high voltage 5V cards

V / low voltage 3V cards

V / high voltage 3V cards

ns / risetime 5V cards ns / falltime 5V cards ns / risetime 3V cards ns / falltime 3V cards % / duty cycle MHz / clock frequency

5 GND ground

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Table 5. SIM–Card interface (continued) MinimumLine SymbolPin

Nominal

6 VPP 4.5

2.7

7 I/O –0.3

3.5 0

3.8

–0.3

2.1 0

2.1

8 N.C reserved for future use

5.5

3.3

0.8

5.3

0.4 5

0.6

3.3

0.4 3 1 1

Technical Information

Unit / NotesMaximumTypical /

V / programming voltage idle state 5V cards V / programming voltage idle state 3V cards

V / input low voltage 5V cards V / input high voltage 5V cards V / output low voltage 5V cards V / output high voltage 5V cards V / input low voltage 3V cards V / input high voltage 3V cards V / output low voltage 3V cards V / output high voltage 3V cards

µs / risetime µs / falltime

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NME–3 Technical Information

SIM Connector HS

PAMS

Technical Documentation

Table 6. SIM–Card interface

Pin Line Symbol Minimum Typical /

Nominal

1 VCC 4.5

2.7

2 Reset 0

4.3 0

2.4

3 CLK 0

3.5 0

2.1

1 3.25

4 N.C. reserved for future use

Maximum Unit / Notes

5.5

3.3 10

0.6

VCC

400

0.6

400

0.5

0.6

3 9% of period 9% of period

50 50 55

V / supply voltage for 5V cards V / supply voltage for 3V cards

mA / supply current for 5V cards mA / supply current for 3V cards

V / low voltage for 5V cards V / high voltage for 5V cards µs / rise and falltime V / low voltage for 3V cards V / high voltage for 3V cards µs / rise and falltime

V / low voltage 5V cards V / high voltage 5V cards V / low voltage 3V cards V / high voltage 3V cards ns / risetime 5V cards ns / falltime 5V cards ns / risetime 3V cards ns / falltime 3V cards % / duty cycle MHz / clock frequency

5 GND ground 6 VPP 4.5

2.7

7 I/O –0.3

3.5 0

3.8

–0.3

2.1 0

2.1

8 N.C reserved for future use

5.5

3.3

0.8

5.3

0.4 5

0.6

3.3

0.4 3 1 1

V / programming voltage idle state 5V cards V / programming voltage idle state 3V cards

V / input low voltage 5V cards

V / input high voltage 5V cards

V / output low voltage 5V cards V / output high voltage 5V cards

V / input low voltage 3V cards

V / input high voltage 3V cards

V / output low voltage 3V cards V / output high voltage 3V cards

µs / risetime µs / falltime

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Technical Documentation

Internal Signals and Connections

LAPTOP

RS 232 Driver

HSIF

Antenna

SIM Reader

RFPART

DCT 3 Engine

Power supply

Technical Information

Transceiver

Audio circuits

VDA signals

Battery

Ignition CRM

AMC BackLD

HF Microphone

HF Loudspeaker

Carradio

Lineout

Cradle

Power supply

MCU

Key board

Car Data IF

Audio

SIM Reader

Display

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Figure 3.

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NME–3 Technical Information

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Technical Documentation

Transceiver

Flash RAM EEPROM

SIM Reader

VDA signals

DSUB 9

RS 232 Levelshifter

F–Bus

GenIO

MAD2

CCONT

Powersupply

RF–part

LNA

Antenna

Rx Tx

Duplexfilter

CRFU 1A

UHF VCO

VHF VCO

Synth

VCTCXO

Backld

A M C

Earpiece amp

Mic–amp

IgnitionCRM

Car bat

Power supply

M–Bus

COBBA

Handset audio interface

Test– Flash IF

Cradle

Display

MCU

SIM Reader

Keyboard

Figure 4. CD 949 System overview

HF preamplifier

Line Drive r

HFMicrophone

Lineout

Handset

Illumination

Loudspeaker

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Technical Documentation

Row 0..4

Col 0..4

MAD

F–Bus Rx F–Bus Tx

M–Bus

RS232 Level shifter

Technical Information

System connector

Data connector

Flash/Test equipment

Handset

Figure 5. Digital interface in GM8B

SYS Conn Block Conections

Audio Block Connections

The Cobba has to functions AD/DA converters for the RF–BB interface. Codecs for the Audio interface. The RF–BB interface is used implemented in the same way it is implemented in HD940. The Cobba audio interface is used different to the handys. The Inputs and outputs for HS–use, which are normally connected directlly to the Microphone and the earpiece are connected to the Handset via balanced drivers and receivers. The Handsfree input and output is connected to the analog HFanalog audio parts on the RU PCB via Balanced lines as well.

Audio Connection to Handset

The audio interface to the HS will not be reused from CD 940. It consists of balanced audiolines from Cobba to Earpiece and from HS Microphone to Cobba.

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NME–3 Technical Information

Table 7. Audio levels for HS

Signal name Nominal value Maximum value Notes

Technical Documentation

PAMS

HS EARP/EARN 17,5 mV

HS MICP/MICN 87 mV

RMS

501 mV

790 mV

RMS

This is the balanced

signal level at the HS

This is the balanced

signal level at the HS/

Cobba

Handset

Radio Unit

Figure 6. HS audio interface

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Technical Documentation

Handsfree Audio Path

DSP 0dB @ 1kHz

Serial Interface

13 bit

parallel nom: –16dBm0 max: +3,14dBm0

92 mVrms nominal

843 mVrms maximal

Networklevel after DSP correction: nom: –16dBm0 max: +3,14dBm0

13 bit ADC

6,14 dBm0 @ 0dBV

8kHz

nom: 78mV max: 707mV

8KHz

2nd order 300Hz highpass filter 0dB @ 1KHz

Phone Unit

–11,3dBm0/Pa @ 1kHz from MRP to Network

5th order 3kHz elyptic lowpass filter 0dB @ 1kHz

nom: 92mV max: 843mV

Technical Information

Sending (SLR=8dB)

0–22,5 dB in 1,5dB steps

anti–aliasing prefilter 0dB

nom: 78mV max: 707mV

+ 6 dB

nom: 184mV max: 1686mV

–20dB

15dB

nom:

18.4mV max: 168 mV

Cobba

nom: 18,4mV max: 168mV

Mic1

VDA HF

Microphone

Networklevel after

DSP 0dB @ 1kHz

Serial Interface

DSP correction: nom: –16dBm0 max: +3,14dBm0

13 bit DAC –7,07 dBVrms

@ 0dBm0

13 bit

parallel nom: –16dBm0 max: +3dBm0

Gain is adjustable from 0 to –30dB in 2dB/4dB steps. Sorftware is set up to provide 10 volume steps.

– 0dB – 4dB – 8dB –10dB –12dB –14dB –16dB –20dB –24dB –28dB

8kHz

nom: 70,2mV max: 636mV

8KHz

Phone Unit

Receiving (RLR=2dB)

–33dBPa/–16dBm0 from Network (nominal)

–4dBPa@3.14dBm0 (maximal)

5th order 3kHz elyptic lowpass filter 0dB @ 1kHz

LineOut

nom: 70mV max: 2000mV

nom: 234mV max: 6700mV 2828mV = 2W at 4W

nom: 70,2mV max: 636mV

Loudspeaker

–18dB (nom) 0dB (max)

–9.5 dB

20dB

nom: 23mV max: 670mV

Gain (see steps shown left lower)

nom: 14mV

6dB gain

max: 401mV increase done

+6dB

nom: 14mV max: 401mV

nom: 70mV max: 2000mV

HF HFCM

Cobba

8dB

EARP

EARN

Issue 1 10/99

Figure 7. Audio Paths for Hands–Free

Page 19

NME–3 Technical Information

Handset Audio Path

PAMS

Technical Documentation

DSP 0dB @ 1kHz

Serial Interface

13 bit parallel

nom: –16dBm0 max: +3,14dBm0

nom: –4,7dBPa max: 14,3dBPa

DSP 0dB @ 1kHz

Serial Interface

nom: –16dBm0 max: +3dBm0

MRP

13 bit parallel

Networklevel after DSP correction: nom: –16dBm0 max: +3,14dBm0

13 bit ADC 6,14 dBm0 @ 0dBV

8kHz

nom: 78mV max: 707mV

8KHz

Mic+Boot Mic: –41,7dBV/Pa @ 1cm @ 1kHz

Vbias

2.2V

nom: 3.28mV max: 30,0mV

Networklevel after DSP correction: nom: –16dBm0 max: +3,14dB m0

13 bit DAC –7,07 dBVrms @ 0dBm0

8kHz

8KHz

2nd order 300Hz highpass filter 0dB @ 1KHz

–2.8 dB

EMC Filtering

nom: 2.37mV max: 21.5mV

Handset

Phone Unit

nom: 70,2mV max: 636mV

31dB

Phone Unit

5th order 3kHz elyptic lowpass filter 0dB @ 1kHz

HSMICP HSMICN

nom: 87mV max: 790mV

5th order 3kHz elyptic lowpass filter 0dB @ 1kHz

Sending (SLR=8dB)

–11,3dBm0/Pa @ 1kHz from MRP to Network

20–42,5 dB in 1,5dB steps

anti–aliasing prefilter 0dB

7m cable

0dB

EMC Filtering

– dB

– 6dB – 8dB –10dB –12dB –14dB –16dB –18dB –20dB –22dB –24dB

nom: 78mV max: 707mV

–18dB (nom) – 6dB (max)

nom: 70,2mV max: 636mV

29dB Fix20dB+

Mic2

VAR9dB

nom: 1.95mV

max: 17.68mV

Cobba

HSMICP

0dB

HSMICN

EMC Filtering

nom: 87mV max: 790mV

–33 dB

nom: 1.95mV max: 17.68mV

Gain is adjustable from 0 to –30dB in 2dB steps. Sorftware is set up to provide 10 volume steps.

nom: 14mV 6dB gain increase done

max: 401mV

Cobba

+6dB

EARP/EARN

ERP

Earp 24dB Pa/V

–12dB

EMC Filtering

@ 1kHz

nom: –9,5dBPa max: 19,5dBPa

nom: 17.7mV max: 506mV

nom: 70.5mV max: 2030mV

Receiving (RLR=2dB)

6,5dBPa/0dBm0 from Network to ERP (nominal)

19,5dBPa@3,14dBm0 (maximal)

Figure 8. Audio Path – Hand–Set

Page 20

12.1dB

Handset

HSEARP

HSEARN

EMC Filtering

nom: 17.5mV max: 501 mV

–__dB

–4 dB

–__dB

EMC Filtering

nom: 28mV max: 802mV

Issue 1 10/99

EARP

EARN

+ 46 hidden pages