Netmux audio wiring

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.