Biamp VO-4 - Manual (Page 8)

8
VO-4 REAR PANEL CONTROLS
Control Outputs
The Control Outputs, labeled 1 through 4, are isolated, voltage-free, software-configurable relay outputs.
The individual pins are labeled as follows:
1. (C): the common/ground pin
2. (NC): normally closed (connected to C when relay is not energized)
3. (NO): normally open (connected to C when relay is energized)
Control Inputs
The Control Inputs are labeled as follows:
1. ( ): logic common/ground input pin
2. (1–4): individual logic inputs
3. (10V): 10V reference voltage (when used as a switch input, a switch must be connected
between the input and logic common terminal)
Audio Inputs
Four plug-in barrier strip connectors provide analog audio signal output. The Vocia software enables a nominal output level of +4 dBu, 0 dBu,
or -10 dBu to support a wide range of connection devices. All plug-in barrier strip connectors should be wired from left to right as follows:
1. (+) High
2. (–) Low
3. ( ) Ground
Ground Screw
This screw provides a connection point to ground the chassis of the VO-4. The power supply to the VO-4 is sourced from PoE, which may
have no connection to ground. The chassis of the VO-4 should be connected to a safety ground (main power supply ground) using the
Ground Screw