TL Audio VTC - Manual (Page 10)

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- Screen = Ground.
If unbalanced signals are used, the screen and ring should both be connected to ground.
2.7 Meter Bridge Connection
The optional bar graph meterbridge is connected to each section of the VTC via these 25 way D-type
connectors. See Technical Section 4.17 for more details.
AUDIO CONNECTIONS – MASTER SECTION
2.8 Group Insertion Points.
The group insertion points are interfaced via a 3 pin, 0.25” switched jack socket on the rear of the
unit. The pin connections are:
- Sleeve = Ground,
- Tip = Send,
- Ring = Return.
The insertion point is unbalanced. If used as an additional send only (e.g. as a send to a tape machine
or monitor mixing desk), the Tip and Ring should be wired together, to preserve the signal path
through the insertion point.
2.9 Group Outputs.
The monitor outputs are via balanced, 3 pin jack connectors. The mating connectors should be wired
as follows:
Balanced outputs:
- Tip = Signal Phase (“+” or “hot”),
- Ring = Signal Non-Phase (“-” or “cold”),
- Screen = Ground.
If unbalanced signals are used, the screen and ring should both be connected to ground.
The nominal operating level of the Group Outputs may be internally set for +4dBu (professional) or -
10dBu (semi-professional) nominal level. The outputs are factory set for +4dBu, but may be changed
by referring to part 4.4 of the Technical Section.