what is dc line balancing?

Discussion in 'General Electronics Chat' started by ElVale, Apr 19, 2009.

  1. ElVale

    Thread Starter New Member

    Mar 3, 2009
    2
    0
    In some transmission frame structures, there are some bits for "dc line balancing". What are those used for?:confused:
     
  2. Darren Holdstock

    Active Member

    Feb 10, 2009
    262
    11
    That's a new term to me. I guess it's a fettle so that the average DC level of the transmitted signal is zero. Nulling DC has been an issue since the first days of telegraphy, and a lot of coding systems (NRZ, EFM, Manchester etc.) are designed to have zero DC component.
     
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