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SIM928A 1
SIM928A 1



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    SIM928A   module is a compact Quad-Band  GSM/GPRS-enable module base on PNX4851 platform which is also equipped with GPS technology for satellite navigation. The complete design in a SMT type makes it easy to integrate GSM/GPRS&GPS as an all-in-one solution.

    General features
    •Quad-Band GSM 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 (3GPP TS 27.007 and SIMCom enhanced AT Commands)
    •SIM application toolkit
    •Supply voltage range:
          -GPRS: 3.2 ~ 4.8 V
          -V-GPS: 2.8 ~ 4.3V
          -VCHG: 5V
    •Low power consumption
    •Dimensions: 30*30*3.0mm
    •Weight: 5.3g
    •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
    -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
    •Integrated TCP/IP stack

    Specifications for CSD data
    •CSD up to 14.4 kbps
    •Non transparent mode

    •AT cellular command interface

    Specification for GPS

    •Support EASYTM   self-generated  orbit prediction
    •Support EPOTM orbit prediction
    •Support SBAS ranging (WAAS, EGNOS, GAGAN, MSAS)
    •Support  Jamming Removing
    •Integrated Low-noise amplifier
    •Receiver type
        33tracking/99 acquisition-channel GPS receiver
    •Max. update rate:    10Hz
         Tracking: -167 dBm     
         Reacquisition:      -157 dBm
         Cold starts:          -148 dBm
          Cold start:          28s
          Warm start:        26s
           Hot start:           <1s
           EPO Assist:     13s(CTTFF)
           Automatic Position3 : <2.5m CEP 
           Speed4: 0.1m/s

    • 80-pad with SMT type
    • one Interface for external SIM card : 3V/ 1.8V
    • two analog audio interfaces
    • SPI interface
    • RTC backup
    • A serial interface and a debug interface for GSM/GPRS
    • two serial interfaces for GPS charge  input

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