PAGE 13 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL
VER1.1
L
ock release back EMF protection :
A capacitor must be fitted across the terminals on
an AC lock release
and a diode must be fitted across the terminals on a DC lock release
as shown in the diagrams below to suppress back EMF voltages.
LOCK RELEASE
12V AC
~ ~
0.1uF capacitor
+
-
1N4002
+
-
12V DC
LOCK RELEASE
DIODE
CABLE SIZE GUIDE
AUDIO SYSTEM
Connections from door panel to telephone.
Connections
50m 100m 200m 300m 400m
1
0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
2
0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
3
0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²
5
0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²
6
0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
When ever possible connection 1(Tx) should be twisted with connection 3(Gnd) and connection 2(Rx) should
be twisted with connection 3(Gnd) as pairs.
Maximum acceptable resistance for terminals 1,2 & 6 = 10
Ω
and for terminals 3 & 5 = 3
Ω
Connections for power supply output to door panel and lock release connections.
50m
100m
Connections
0.5mm² 0.75mm²
The power supply should be located as close to the door panel as possible for best performance.
Maximum acceptable resistance for above cables = 3
Ω
VIDEO SYSTEM
Connections from door panel to the Art.890 controller.
Connections
50m 100m 200m 300m
400m
T
0.35mm² 0.5mm² 0.5mm² 0.75mm²
1.0mm²
A
0.5mm² 1.0mm² 1.5mm² 2.0mm²
2.5mm²
+8
0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
F
0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
I
0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²
G2
0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
H1
0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
F1
0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
F2
0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
SE
0.5mm² 1.0mm² 1.5mm² 2.0mm²
2.5mm²
V
Standard quality
Medium quality
Good quality
Good quality
High quality
M
75
Ω
Coax cable
75
Ω
Coax cable
75
Ω
Coax cable
75
Ω
Coax
cable
75
Ω
Coax
cable
When ever possible connection H1(Tx) should be twisted with connection F(Gnd) and connection G2(Rx)
should be twisted with connection F(Gnd) as pairs.
