Cable NB/NC - 128-Port Async Controller Cable 8-wires NB P/N43G0937 15ft NC P/N43G0936 0.75ft

                         ____________________________
                        | System End  |   Device End |
        System End      | HD-15  _____|____    HD-15 |     Device End
                        | pin   |  Signal  |     pin |
         1              |_______|__________|_________|              1
       __|__________    |  1     RxD- | TxD-      1  |    __________|__
      |  . . . . .  |   |  2     RxD+ | TxD+      2  |   |  o o o o o  |
    6-- . . . . .   |   |  4     RxC- | TxC-      4  |   |   o o o o o--6
       \ . . . . . /    |  5     RxC+ | TxC+      5  |    \ o o o o o /
        '|-------|'     |  6     TxD- | RxD-      6  |      '-------|
        11       15     |  7     TxD+ | RxD+      7  |              11
                        |  9     TxC- | RxC-      9  |
                        | 10     TxC+ | RxC+     10  |
                        | Shell ShGnd | ShGnd        |
                        |_____________|______________|

         <=1000ft 28 AWG - max16pF/f -  type Belden 9806 or equivalent
          >1000ft 24 AWG - max16pF/f  - type Belden 9831 or equivalent


   __________________
  | 128-Port        1|---NB/NC-------.
  | Adapter         2|---NB/NC--     |  _NB/NC__   _NB/NC _   _NB/NC__
  |_______          _|          |   _|_|_      _|_|_      _|_|_      _|_T_
          |||||||__|            |  |Node1|    |Node2|    |Node3|    |Node4|
                                |  |_____|    |_____|    |_____|    |_____|
                                |
                                |
                                |
                                |  _NB/NC__   _NB/NC _   _NB/NC__
                               _|_|_      _|_|_      _|_|_      _|_T_
                              |Node1|    |Node2|    |Node3|    |Node4|
                              |_____|    |_____|    |_____|    |_____|