APT WorldCast Equinox - 4.5.7. Opto-coupler;Isolator Inputs

WorldCast Equinox - Release 3.1 - user manual – 07/2011
Page 32
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4.5.7. Opto-coupler/Isolator
25 pin female connector
contact view
Alarm Port
Selected by pins
Pin
Description
Function
1
+ve Alarm 1
Alarm 1 +ve I/P
2
Clean Alarm 1
Alarm 1 Contact I/P
3
+ve Alarm 2
Alarm 2 +ve I/P
4
Clean Alarm 2
Alarm 2 Contact I/P
5
+ve Alarm 3
Alarm 3 +ve I/P
6
Clean Alarm 3
Alarm 3 Contact I/P
7
+ve Alarm 4
Alarm 4 +ve I/P
8
Clean Alarm 4
Alarm 4 Contact I/P
9
+ve Alarm 5
Alarm 5 +ve I/P
10
Clean Alarm 5
Alarm 5 Contact I/P
11
+ve Alarm 6
Alarm 6 +ve I/P
12
Clean Alarm 6
Alarm 6 Contact I/P
13
+ve Alarm 7
Alarm 7 +ve I/P
14
Clean Alarm 7
Alarm 7 Contact I/P
15
+ve Alarm 8
Alarm 8 +ve I/P
16
Clean Alarm 8
Alarm 8 Contact I/P
17
-ve Alarm 1
Alarm 1 -ve I/P
18
-ve Alarm 2
Alarm 2 -ve I/P
19
-ve Alarm 3
Alarm 3 -ve I/P
20
-ve Alarm 4
Alarm 4 -ve I/P
21
-ve Alarm 5
Alarm 5 -ve I/P
22
-ve Alarm 6
Alarm 6 -ve I/P
23
-ve Alarm 7
Alarm 7 -ve I/P
24
-ve Alarm 8
Alarm 8 -ve I/P
25
GND
Ground
The opto-coupler, a 25 way „D‟ type female connector, will accept
a mix of up to a maximum of eight DC inputs. Either the voltage is
applied between +ve and –ve (up to +30V) or Clean Alarm is
connected to GND. These signals are then converted to data and
embedded in the main data stream.
Connecting Clean Alarm inputs to Gnd may cause ground loops
and affect audio quality. If this happens use the opto-coupled in-
puts (+ve and –ve) instead.
When the Remote Status feature is enabled, the contacts of
alarm relays 1 to 6 on both the local and remote codecs are dis-
connected from their normal operation and their circuits are con-
trolled by other unit‟s opto-coupled inputs. The alarm circuitry can
now be now used to transport any user defined control or moni-
toring signal. The Summary alarm is not affected and remains ac-
tive as before.