How to connect a Gps device to PC

Discussion in 'Other GPS Devices' started by andi, Dec 20, 2016.

  1. andi

    andi

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    I have A Starcom System Helios GPS tracker. It was not in use for 4 years.
    Now i want to use it on Orange GPS for free tracking.
    For this I have to change device server and port. There is RS232 three wires in device which is used to communicate with pc using RS232 to USB converter cable. I bought a RS232 to USB cable and connect three wires RX, TX, Ground from gps device to cable. my PC can detect the cable in device manager but GPS application can not detect my device. How do i connect my GPS to PC.
    System Windows 8.1 64 Bit
    Gps device- Helios Adv 1.0
     

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    andi, Dec 20, 2016
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  2. andi

    Nuvi-Nebie Moderator

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    You probably need to set-up the RS232 perameters (in screenshot 688), so that the baud rate, stop bits etc. line up with the values being used by the tracker
     
    Nuvi-Nebie, Dec 22, 2016
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  3. andi

    andi

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    I don't know what parameter are used by tracker.... What should be these value for a tracker?
     
    andi, Dec 22, 2016
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  4. andi

    andi

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    andi, Dec 22, 2016
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  5. andi

    Nuvi-Nebie Moderator

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    It looks like 115200 is the default baud rate on pages 38 and 39, are you sure that the Tx and Rx conections are the right way round?, Tx on the tracker needs to go to Rx on the usb - serial interface
     
    Nuvi-Nebie, Dec 22, 2016
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  6. andi

    andi

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    The baud rate is set to 115200 by default. There is only three wires from tracker- GND, RX and TX.
    I connected RX to number 2 pin , TX to number 3 pin and GND to number 5 pin of RS232 cable.
    I also tried replacing number 2 and 3 pin by TX and RX respectively but nothing happens. see page number 83 for wire lable.
    see screenshot.
     

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    andi, Dec 22, 2016
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  7. andi

    Nuvi-Nebie Moderator

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    I'm running out of suggestions, the only other one I have is voltage levels, true RS232 swings between plus and minus 15volts whereas TTL serial swings between plus 5volts and 0volts, there are some notes here :-

    https://www.sparkfun.com/tutorials/215
     
    Nuvi-Nebie, Dec 22, 2016
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