Telit Wireless Solutions GM862GPS Series Manuale utente

TELIT GM862-GPS

Quad Band GPS Data Terminal Module

TECHNICAL

MANUAL

Code: 1vv0300730

Rev. 0

May. 20, 2006

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

Pag.2 of 79

Rev. 0

REVISION INDEX

REV. SUBJECT OF MODIFICATION DATE

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

Pag.3 of 79

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MASTER INDEX

1INTRODUCTION ................................................................................... 4

2MECHANICAL VIEW ............................................................................ 6

2.1 Mechanical view of Telit GM862-GPS module................................................................. 6

3TECHNICAL SPECIFICATIONS........................................................... 7

3.1 GM862-GPS Transceiver Module..................................................................................... 8

3.2 Environmental requirements ........................................................................................... 11

3.3 Transceiver module interface connectors ....................................................................... 12

3.4 Audio levels specifications .............................................................................................. 13

3.5 Interface connector.......................................................................................................... 15

3.6 Mechanical characteristics.............................................................................................. 18

3.7 GM862-GPS Data Terminal System............................................................................... 19

3.8 EMC ................................................................................................................................ 22

3.9 Camera support............................................................................................................... 22

3.10 Software Features........................................................................................................... 23

3.11 Jammed Detect & Report Extension............................................................................... 30

3.12 Easy Script Extension - Python interpreter...................................................................... 31

3.13 Python implementation description ................................................................................. 33

3.14 AT Commands ................................................................................................................ 50

3.15 GPS Receiver characteristic ........................................................................................... 55

3.16 Conformity Assessment Issues...................................................................................... 57

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

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1 INTRODUCTION

The Telit GM862-GPS Quad Band GSM-GPRS Data Terminal Module is a small,

lightweight and low power consumption device that allow digital communication services

wherever there is a GSM - GPRS 850 MHz, 900 MHz, 1800 MHz or PCS 1900 MHz

network with an integrated GPS receiver.

The Telit GM862-GPS includes a 20 channels GPS receiver. It provides all the features of

the Telit GM862 family versions such as Voice, Circuit Switched Data transfer,

Phonebook, SMS, four bands GSM capability, hot removal sensing on board SIM Reader,

GPRS Class 10 and battery charger circuitry.

Moreover, the Telit GM862-GPS integrates the “EASY SCRIPT “ functionality. This is a

PYTHON engine script interpreter allowing self-controlled operations.

It is specifically designed and developed for OEM usage and dedicated to portable data,

voice and telematics applications needing the added triband and GPRS Class 10

improved speed features and the battery charger such as:

• Fast Worldwide GPRS Telemetry and Telecontrol (SCADA applications)

• Worldwide Smart GPRS Security systems

• Worldwide Smart GPRS Vending machines

• Fast Worldwide GPRS POS terminals

• Worldwide PDAs

• Worldwide Phones and Payphones

• Worldwide Smart Automotive and Fleet Management applications

• Battery powered applications needing a battery charger

Moreover, for the GM862-GPS:

• Automotive and Fleet Management applications

• Position reporting and tracking

The Telit GM862-GPS module is specifically designed and developed for OEM usage and it is

intended to be installed inside an equipment.

The Telit GM862-GPS family modules is LEAD FREE Green products compliant with

RoHS directive.

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

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The design and development of the Telit GM862-GPS module is in line with the following

documents:

3GPP TS 51.010–1 GSM/EDGE Radio Access Network; Digital cellular

telecommunications system (Phase 2+): Mobile Station (MS) Conformance Specification;

Part 1. Conformance Specification.

EN 301 511 Global system for mobile communications (GSM); Harmonised standard

for mobile stations in the GSM 900 and DCS 1800 bands covering essential requirements

under Article 3(2) of the R&TTE directive (1999/5/EC).

EN 60950 Safety of information technology equipment, including business equipment.

EN 301 489–07 Electromagnetic compatibility and radio spectrum matters (ERM);

Electromagnetic compatibility (EMC) standard for radio equipment and services;

Part 7: Specific conditions for mobile and portable radio and ancillary equipment of digital

cellular radio telecommunications systems (GSM and DCS).

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

Pag.6 of 79

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2 MECHANICAL VIEW

2.1 Mechanical view of Telit GM862-GPS module.

GPS antenna connector

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

Pag.7 of 79

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3 TECHNICAL SPECIFICATIONS

Herein will be described the technical characteristics of GM862-GPS Transceiver Module.

The block diagram in Figure 1 shows the interconnection between GM862-GPS

Transceiver and Other Equipment Manufacturer Hardware.

Figure 1 GM862-GPS Transceiver.

Internal

SIM

CARD

reader

QUAD BAND

RFsection

GPS section

GPS RF connector

RX-TX connector

Charger Input

Power supply

/D Connect

Camera Interface

GPIO 1-7

RS232 UART data

Handset AUDIO path

Handsfree AUDIO path

BB Processing

E-Gold Lite

RS232 NMEA data

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

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3.1 GM862-GPS Transceiver Module

The GM862-GPS Transceiver Module is a Quad Band GSM - GPRS class 10 (4 down 2

up) based on Lite Infineon chipset and PV Lite internal SW platform with SiRF GSC3F

GPS chipset, on low profile compact shielded assembly with connections for GSM RX/TX

antenna, GPS antenna and data/service connector for all functional and interface signals.

The module is provided with an on board SIM Holder.

3.1.1 Electric Characteristics

3.1.1.1 Supply voltage

The external power supply must be connected to the VBATT signal and must fulfill the

following requirements:

• Nominal operating voltage: 3.8 V

• Operating voltage range: 3.4 V - 4.2 V

3.1.2 Power consumption

The typical current consumption of the GM862-GPS module is:

• Power off current (typical) < 36 μA;

• Stand–by current (power saving) < 20 mArms (< 5 mArms using command AT+CFUN)

• Operating current in voice ch. 170 mArms @ typical network conditions

• Operating current in voice ch. < 270 mArms 1.9 Apeak @ worst network conditions

• Operating current GPRS class 10 < 500 mArms @ worst network conditions

• GPS Receiver consumption < 60 mArms

• GPS Receiver (power saving) 1 mArms

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

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3.1.3 Embodied Battery charger

The battery charger is suited for 3.7V Li-Ion rechargeable battery (suggested capacity 500-

1000mAh). The Charger needs only a CURRENT LIMITED power source input and

charges the battery directly through VBATT connector pins.

• Battery charger input pin: CHARGE

• Battery pins: VBATT, GND

• Battery charger input voltage min: 5.0 V

• Battery charger input voltage typ: 5.5 V

• Battery charger input voltage max: 7.0 V

• Battery charger input current max: 400mA

• Battery type: Rechargeable Li-Ion

NOTE: If embodied battery charger is used, then a LOW ESR capacitor of at least 100μF

must be mounted in parallel to VBATT lines.

NOTE: when power is supplied to the CHARGE lines, a battery must always be connected

to the VBATT pin of the module.

TECHNICAL MANUAL

Telit GM862-GPS

Quad Band GPS Data Terminal Module

Pag.10 of 79

Rev. 0

3.1.4 Radio Electric Characteristics

3.1.4.1 Operating frequencies

The standard operating frequencies are conforming to the ETSI GSM specifications.

Mode Freq. TX (MHz) Freq. RX (MHz) Channels (ARFC) TX - RX offset

E-GSM-900 890.0 - 914.8 935.0 - 959.8 0 – 124 45 MHz

880.2 - 889.8 925.2 - 934.8 975 - 1023 45 MHz

GSM-850 824.2 - 848.8 969.2 - 893.8 128 - 251 45 MHz

DCS-1800 1710.2 - 1784.8 1805.2 - 1879.8 512 – 885 95 MHz

PCS-1900 1850.2 - 1909.8 1930.2 - 1989.8 512 - 810 80 MHz

3.1.4.2 Transmitter output power

GSM–850

The GM862-GPS transceiver module in GSM–850 operating mode is class 4 in

accordance with the specification that set the nominal 2W peak RF power (+33dBm) on 50

Ohm.

GSM–900

The GM862-GPS transceiver module in GSM–900 operating mode is class 4 in

accordance with the specification that set the nominal 2W peak RF power (+33dBm) on 50

Ohm.

DCS–1800

The GM862-GPS transceiver module in DCS–1800 operating mode is class 1 in

accordance with the specifications that set the nominal 1W peak RF power (+30dBm) on

50 Ohm.

PCS–1900

The GM862-GPS transceiver module in PCS–1900 operating mode is class 1 in

accordance with the specifications that set the nominal 1W peak RF power (+30dBm) on

50 Ohm.

3.1.4.3 Reference sensitivity

GSM–850

The sensitivity of the GM862-GPS transceiver module according to the specifications for

the class 4 GSM–850 portable terminals is better than –102dBm in all the operational

conditions.

GSM–900

The sensitivity of the GM862-GPS Transceiver module according to the specifications, for

the class 4 GSM–900 portable terminals is better than –102dBm in all the operational

conditions. The static sensitivity is better than –105dBm in all the operational conditions.

DCS–1800

The sensitivity of the GM862- GPS Transceiver module according to the specifications, for

the class 1 portable terminals DCS 1800 is better than –102dBm in normal operating

conditions. The static sensitivity is better than –105dBm in all the operational conditions.

PCS–1900

The sensitivity of the GM862- GPS Transceiver module according to the specifications, for

the class 1 portable terminals PCS 1900 is better than –102dBm in normal operating

conditions. The static sensitivity is better than –105dBm in all the operational conditions.

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