1. Connect the receiver to the
MLC 104 IP Plus.
a.
Wire one of the provided two-pole
captive screw connectors to one end of a
communication cable as follows:
•
Connect the red wire to the NO (Normally
Open) pin.
•
Connect the black wire to the C (Common
or ground) pin.
b.
Plug the communication cable into the Rly
port on the receiver (see the illustration at
right.
NOTE:
If the controller and the switcher use
separate power supplies, ground the common
(C) pin of the Rly port to the receiver using
a jumper between the common pin and the
ground pin on the Contact input (CTC), the
Aux Input (Aux In), or the RS-232 port (see the
illustration at right).
Installation
Example — Setting
Up an Instant Alert
This section describes an example of an optional instant alert setup, in which the relay
port of the VLR 102 is connected to a Digital I/O port of an Extron MLC 104 IP Plus. This
enables you to send out e-mail alerts from the classroom by holding down both Volume
buttons for 3 seconds.
Ï
Connect a communication cable to the
VLR 102 Rly port.
VoiceLift System with PVS 405D Installation Guide
•
Installation Example
37