Netmux audio wiring

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Revision as of 20:50, 23 December 2009 by Malcolm.chambers (talk | contribs) (Straight from old website)
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This page aims to track the wiring of various cables within the breakout.

Mux Connection Leads

These are all made up using 8-core screened lead. The screen is connected to ground in all the leads, and carries no signal because all the audio is balanced. There will be a total of two Group 1 cables, two group 2 cables and two output cables needed, one of each for the top (Net) and bottom (Stream) audio muxes. The two right-hand side connectors (seen from the back of the mux) are unused because the system is mono.

Input Group 1

Mux Channel Source Pin Colour
1 Sound Desk + 13 Brown
1 Sound Desk - 12 Yellow
2 ??? + 24 Black
2 ??? - 23 White
3 OB Input + 10 Purple
3 OB Input - 9 Green
4 ??? + 21 Red
4 ??? - 20 Blue

For some reason I can't remember what channels 2 and 4 were for, and why it's those numbers which are blank.


Input Group 2

Mux Channel Source Pin Colour
12 Digital + 21 Yellow
12 Digital - 20 Brown
13 Analogue + 7 Green
13 Analogue - 6 Purple
14 Vidserv + 18 White
14 Vidserv - 17 Black
15 Inform + 4 Red
15 Inform - 3 Blue
16 Silence + 15 Wire link
16 Silence - 14 Wire link

Channel 16 is associated with clock and puts silence on air. It has a wire link across the pins inside the D connector and no connection to the outside world.


Output Cable

Mux Output Pin Colour
1 + 4 Purple
1 - 3 Green
2 + 15 Red
2 - 14 Blue

Outputs 1 and 2 are the same signal from independent line drivers in the NetMux unit.