SIM908

SIM908 module is a complete Quad-Band  GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will  significantly save both time and costs  for customers to develop GPS enabled applications.
Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

 

General features

 

•          Quad-Band 850/900/18001900MHz

•          GPRS multi-slot class 10

•          GPRS mobile station class B

•          Compliant to GSM phase 2/2+

  -  Class 4 (2 W @ 850/900 MHz)

  - Class 1 (1 W @ 1800/1900MHz)

•          Control via AT commands (GSM 07.07 ,07.05   and SIMCom enhanced AT Commands)

•          SIM application toolkit

•          Supply voltage range:

    -GPRS: 3.2 ~ 4.8 V

    -GPS: 3.0 ~ 4.5V

•          Low power consumption

•          Dimensions: 30*30*3.2mm

•          Weight:

  - SIM908:5.2g

  - SIM908-C:11.1g

•          Operation temperature:

  -40 °C to +85 °C

 

Specifications for SMS via GSM / GPRS

•          Point-to-point MO and MT

•          SMS cell broadcast

•          Text and PDU mode

 

Specifications for audio

•          Tricodec

  - Half rate (HR)

  - Full rate (FR)

  - Enhanced Full rate (EFR)

•          Hands-free operation

•          Echo cancellation

 

Specifications for data transfer

•          GPRS class 8/10: max. 85.6 kbps (downlink)

•          PBCCH support

•          Coding schemes CS 1, 2, 3, 4

•          CSD up to 14.4 kbps

•          USSD

•          Non transparent mode

•          PPP-stack

•          Integrated TCP/IP stack

 

Compatibility

•          AT cellular command interface

 

Specification for GPS

•          Receiver type

  - 42-channel

  - GPS L1 C/A code,

  - High-performance STE engine 

 

•          Sensitivity

  - Tracking:               -160 dBm

  - Cold starts :           -143 dBm

 

•       Time-To-First-Fix  

  - Cold starts:           30s (typ.) 

  - Hot starts:               1s (typ.)

 

•       Accuracy

  -Horizontal position : <2.5m CEP

 

•       Power consumption (GSM engine in idle mode)

  - Acquisition           77mA

  - Tracking               76mA

 

Interfaces

•          80-pad with SMT type

•          Interface to external SIM 3V/ 1.8V

•          Dual analog audio interfaces

•          SPI interface


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