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8 C1475M-C (9/08)
Table A. Video Coaxial Wiring Distances
Table B shows the recommended maximum distances for 24 VAC with a 10 percent voltage drop. (Ten percent is generally the maximum
allowable voltage drop for AC-powered devices.)
Table B. 24 VAC Wiring Distances
NOTE: Distances are calculated in feet; values in parentheses are meters.
Surface Mount Installation
The DF5S-SMKIT surface mount adapter kit is required to attach DF5S Series back box to the surface of a ceiling. Refer to the installation manual
for the DF5S-SMKIT.
Camera and Lens Installation
NOTE: If the camera and lens are already installed, refer to the camera and lens manuals for information on wiring and operating your
equipment.
Use only fixed focal length lenses with the DF5S dome. To install the camera and lens:
1. Install the miniature coaxial cable on the camera. Attach the camera and lens to the tilt table with the 1/4-20 screw and washers
(supplied).
Figure 5. Installing the Camera and Lens
2. To ensure that the lens will not hit the lower dome:
• Place the lower dome over the back box with the camera and lens installed (do not attach dome).
• If the lens touches the lower dome, adjust the tilt table assembly.
3. Refer to the manual supplied with the camera and lens for the following information:
• How to connect power and video wiring
• How to make camera and lens adjustments
Cable Type* Maximum Distance
RG59/U
RG6/U
RG11/U
750 ft (299 m)
1,000 ft (305 m)
1,500 ft (457 m)
*Cable requirements:
75-ohm impedance
All-copper center conductor
All-copper braide shield with 95% braid coverage
Wire Gauge
Total VA 20 18 16 14 12 10
10 VA 283 ft (86) 451 ft (137) 716 ft (218) 1142 ft (348) 1811 ft (551) 2880 ft (877)