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
    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
    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.