Справочник Пользователя для Pelco cc3700
Pelco Manual C1986M-B (11/03)
[ 9 ]
AC Operation Only – If you are wiring more than one camera to the same transformer, connect one side of the
transformer to the same terminal on all cameras, and connect the other side of the transformer to the remaining
terminal on all cameras. Failure to connect all of the cameras the same way will cause the cameras to be out of
phase with each other and may produce a vertical roll when switching between cameras.
transformer to the same terminal on all cameras, and connect the other side of the transformer to the remaining
terminal on all cameras. Failure to connect all of the cameras the same way will cause the cameras to be out of
phase with each other and may produce a vertical roll when switching between cameras.
Table A. Recommended Wire Gauge and Wiring Distances
The following are the recommended maximum distances for 24 VAC applications and are calculated with a 10-
percent voltage drop. (Ten percent is generally the maximum allowable voltage drop for AC-powered devices.)
percent voltage drop. (Ten percent is generally the maximum allowable voltage drop for AC-powered devices.)
Wire Gauge
Total
20
18
16
14
12
10
VA
(0.5 mm
2
)
(1.0 mm
2
)
(1.5 mm
2
)
(2.5 mm
2
)
(4.0 mm
2
)
(6.0 mm
2
)
10
283
451
716
1142
1811
2880
(86)
(137)
(218)
(348)
(551)
(877)
EXAMPLE: A camera that requires 10 VA and is installed 283 feet (86 m) from the transformer would require
a minimum wire gauge of 20 AWG.
a minimum wire gauge of 20 AWG.
NOTE: Distances are calculated in feet; values in parentheses are meters.
Table B. Video Coaxial Cable Requirements
Cable Type*
Maximum Distance
RG59/U
750 ft (229 m)
RG6/U
1,000 ft (305 m)
RG11/U
1,500 ft (457 m)
* Minimum cable requirements:
75 ohms impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage
All-copper center conductor
All-copper braided shield with 95% braid coverage