Telit Wireless Solutions GM862GPS Series User manual

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
Rev. 0
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
Pag.4 of 79
Rev. 0
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
Pag.5 of 79
Rev. 0
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
Rev. 0
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
Rev. 0
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
A
/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
Pag.8 of 79
Rev. 0
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
Pag.9 of 79
Rev. 0
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.