User Manual
Table Of Contents
- 1. Introduction
- 2. GR47/GR48 Radio Devices
- 3. Abbreviations
- 4. Mechanical Description
- 5. System Connector Interface
- 5.1 Overview
- 5.2 General Electrical and Logical Characteristics
- 5.3 Grounds
- 5.4 VCC - Regulated Power Supply Input
- 5.5 Battery Charging Input (CHG_IN)
- 5.6 Turning the Radio Device ON/OFF and the External Power Signal
- 5.7 Analogue Audio
- 5.8 PCM Digital Audio
- 5.9 Serial Data Interfaces
- 5.10 SIM Card Related Signals
- 5.11 Service/Programming
- 5.12 Buzzer
- 5.13 LED
- 5.14 General Purpose Digital I/O Ports
- 5.15 Extended I/O capabilities
- 5.16 General Purpose Analogue I/O Ports
- 5.17 External I 2C Serial Control Bus
- 5.18 TX_ON - Burst Transmission
- 5.19 Real Time Clock
- 6. Antenna Connector
- 7. Keyboard Interface
- 8. Hints for Integrating the Radio Device
- 9. Embedded Applications
- 10. TCP/IP Stack
- 11. Technical Data
- 12. Declaration of Conformity
- 13. Introduction to the Developer’s Kit
- 14. Using the Developer’s Kit
2. GR47/GR48 RADIO DEVICES
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LZT 123 7589 R1A
2.3.4 Data
The radio device supports the following data protocols:
• *356*HQHUDO3DFNHW5DGLR6HUYLFH
The radio devices are Class B terminals. The radio devices are GPRS
4+1 enabled, which are capable of receiving at a maximum of four
timeslots per frame (down link), and transmitting in one timeslot per
frame (up link).
• &6'&LUFXLW6ZLWFKHG'DWD
The radio devices are capable of establishing a CSD communication at
9.6 kbps.
• +6&6'+LJK6SHHG&LUFXLW6ZLWFKHG'DWD
The radio devices support HSCSD communication, with one timeslot
per frame capacity in the up link and two timeslots per frame capacity
in the down link (2+1).
2.3.5 SIM Card
An external SIM card with 3 V or 5 V technology, can be connected to the
radio device via its 60-pin system connector.
2.3.6 Power Consumption
1RWH The power consumption during transmission is measured at maximum
transmitted power.
2.3.7 Other Features
These include:
• 07.10 multiplexing.
• GPS interoperability.
• SIM application tool kit, class 2 release 96 compliant.
• Embedded application
• On board TCP/IP stack
• E-OTD (Supported by GR48)
Idle Mode Transmit/Operation
GSM 850 and E-GSM 900 Voic e/C SD < 5 mA < 250 mA (< 2 A peak)
Data (GPRS 4+1) < 5 mA < 350 mA (< 2 A peak)
GSM 1800 and GSM 1900
Voic e/C SD < 5 mA < 250 mA (<1.75 A peak)
Data (GPRS 4+1) < 5 mA < 350 mA (<1.75 A peak)