C2478M-B-ML (2/05) 7
EnglishMinimum cable requirements:
75 ohms impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage
NOTE:
These are the recommended maximum distances for 24 VAC appli-
cations and are calculated with a 10 percent voltage drop. (Ten percent is
generally the maximum allowable voltage drop for AC-powered devices.)
NOTE:
Input power for the dome is 24 VAC only. Power consumption is
75 VA per dome.
Use a 24 VAC transformer with a minimum of 100 VA.
Table A.
Video Coaxial Cable Requirements
Cable Type Maximum Distance
RG59/U 750 ft (299 m)
RG6/U 1,000 ft (305 m)
RG11/U 1,500 ft (457 m)
Table B.
24 VAC Wiring Distances
Wire Gauge
Total VA 20
(0.5 mm
2
)
18
(1.0 mm
2
)
16
(1.5 mm
2
)
16
(2.5 mm
2
)
75 37 ft
(11 m)
60 ft
(18 m)
95 ft
(29 m)
153 ft
(46 m)
Table C.
Configuration of Wire Harness
Pin Wire Color Function
9-Conductor Cable
A Black Alarm 1
B Red Alarm 2
C White Alarm 3
D Green Alarm 4
E Brown Alarm 5
F Orange Alarm 6
GYellow Alarm 7
HViolet Ground
– Blue Not Used
5-Conductor Cable
J Black Relay N.O. (Aux. 1)
K Red Relay N.C. (Aux. 1)
L Green Relay Common (Aux. 1)
M Brown Ground
N White Auxiliary 2
Cat5 Cable
P Green TX+
R White/Green TX-
S Blue RX-
T White/Blue RX-
U Orange UTP Video (+)
V White/Orange UTP Video (-)
W Brown Spare
X White/Brown Spare
Coaxial Cable
Y Coaxial Core Video Out
Z Coaxial Shield Video Shield
Individual Wires
a White 24 VAC (AC HI)
b Black 24 VAC (AC LO)
c Green/Yellow Earth Ground