TL Audio VTC - Manual (Page 8)

8
AUDIO CONNECTIONS – CHANNEL
2.2 Mic Inputs.
Each channel has a female, 3 pin XLR connector for mic connection. It is compatible with either
balanced or unbalanced signals, when the mating connector is appropriately wired:
Balanced inputs:
- Pin 1 = Ground (screen).
- Pin 2 = Signal Phase (“+” or “hot”).
- Pin 3 = Signal Non-Phase (“-” or “cold”).
Unbalanced inputs:
- Pin 1 = Ground (screen)
- Pin 2 = Signal Phase (“+” or “hot”).
- Pin 3 = Signal Ground
When using unbalanced signals, the signal ground may be obtained by linking pins 1 and 3 in the
mating XLR connector. Good quality screened cable should be used, particularly for microphone or
low level sources, to prevent hum or noise pickup.
2.3 Line 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.