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HD Wireless User’s Guide (v6.2) 29
Chapter 2 - Installation
2.4.2 Connecting the studio signalling
Connect the studio signalling system to the Sign . connector on the rear of the WCU. The
wiring of the panel connector is shown.
Figure 2-11. Signalling connection
Call, On-air and Iso signals
There are four connection methods for the Call, On-air and Iso (On-air yellow) signalling
functions:
1. Dry contact
2. Common ground
3. Voltage level Send lead
4. Open / voltage level Send lead
A selection in the
SYSTEM > SIGNALLING
menu allows you to make the state of the function
(on or off) correspond to a particular input signal. There are two leads for each connection -
Send and Return.
The following tables show the selectable states for each of the four connection methods. The
states are Open/High (OH); High/Open (HO); Low/High (LH) or High/Low (HL). Refer to Chapter
5 to see how to set these menu settings.
Table 2-12. Signalling send and return pins
Function Send pin Return pin
Call 2 10
Iso 3 11
On-air 4 12
8
15
9
1
Preview out
Preview out ret.
Call in
+5 Vdc
Housing
Call in ret.
ISO in
ISO in ret.
Call out ret.
Call out
On-air in ret.
On-air in
Audio 2 level
Ground
Audio 1 level