Serial communication for 400m @ 32Mbps

Discussion in 'The Projects Forum' started by rakeshm55, Jun 23, 2011.

  1. rakeshm55

    Thread Starter Member

    Oct 19, 2010
    68
    0
    Hi
    i have an application where I need to transmit data for 400m @ rate of 32Mbps. The transmission is full duplex.
    I am using a coaxial cable for transmitting this distance with a bandwidth of 6Ghz. Will this be possible?? If so then how??
    the data will override on DC power which is used to powerr the remote device.
     
  2. strantor

    AAC Fanatic!

    Oct 3, 2010
    4,302
    1,988
    look up devicenet - that's power over communications, or this: http://www.axis.com/products/video/about_networkvideo/poe.htm

    I don't know about the coax part though. Are you absolutely committed to coax?

    You're being pretty specific about the numbers which makes me think you have already selected your remote device? can you post a link to the device?
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    You're going to get a heck of a lot of attenuation using coaxial cable over that distance.
    Here's a datasheet that covers a variety of coax over a variety of frequencies, but only up to 1GHz:
    http://datasheet.elcodis.com/pdf/0/65/6507/c5770.30.01.pdf

    You'll need coax with a very hefty center conductor. RG58 or RG59 will NOT work for you. The limit for RG6 is about 150 meters without amplification for cable TV stuff, and that's only up to around 2GHz.
     
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