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serial communication protocol analyze

Discussion in 'General Electronics Discussion' started by awe320, Jul 23, 2013.

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  1. awe320


    Jul 23, 2013
    I hope this is the right forum for my question but i really need some help.

    I have a video camera with a remote control that connected through special cable.
    i want to copy some command from the remote and write a software that send these commands to the camera, basically i want to control the camera with a software and without the remote.
    i know how to write the software but i cannot figure out how to analyze the data.
    the manual explains the cable pinouts:
    1- CAM DATA (H)
    2- CAM DATA (C)
    3- CAM CONT (H)
    4- CAM CONT (C)

    however i managed to operate the remote with only 3 wires by connecting 1 and 3 together.
    - i do not know any data about the connection, whether its 232, 422 or 485.
    - i do not know the baud rate, stop bits etc.
    - i know it can work with 3 wires
    - i know it work even with 200m cable.
    - the communication between the camera and remote is bi-directional

    can anyone please tell me where to start and what are my chances?

    Thanks a lot for any help. :confused:
  2. gorgon


    Jun 6, 2011
    How about to start with telling us what type of camera we are supposed to know this about?
  3. awe320


    Jul 23, 2013
    the camera- panasonic AG-HPX255
    the remote- AG-EC4GPJ

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