TL Audio VTC - Manual (Page 9)

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2.4 Insertion Points.
The insertion points are also 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.
2.5 Monitor Return Inputs.
A 3 pin, 0.25” jack plug is required, which is also compatible with balanced or unbalanced sources,
when wired as follows:
Balanced inputs:
- 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 Monitor Return 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 3.6 of the Technical Section.
2.6 Tape/Direct Outputs.
The Direct Output connector is a 3 pin, 0.25” jack socket on the rear of the unit. The output
automatically adjusts for balanced or unbalanced connection, and 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.
The mating connector should be wired as follows:
Balanced outputs:
- Tip = Signal Phase (“+” or “hot”),
- Ring = Signal Non-Phase (“-” or “cold”),