Dahua 49 Series Manuel de démarrage rapide - Page 13
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4.1 Cable Requirements
The HDCVI PTZ requires the following minimum specifications for the coaxial cable used to transmit
video:
•
75 Ohm Resistance
•
Full-cable with copper conductor
•
95% knitted copper shield
Transmission distances
RG-59/U Coax
RG-6/U Coax
CAT 6 UTP
(balun required)
4.2 Preparing the Camera
The HDCVI PTZ camera comes with the PFB305 Wall Mount, the installer must supply the following
hardware:
•
Four (4) bolts, washers or other fastening hardware to secure the wall mount to the installation
medium. The hardware must be capable of supporting eight (8) times the weight of the camera
and mount.
•
Appropriate tools to mount the camera to the wall.
Unpacking the Camera
1. Remove the camera, the mount accessories and any hardware packages from the boxes.
2. Remove the camera from the plastic wrapping and place the camera dome-end up in the foam
packaging.
4.3 Mounting the Camera to a Wall
1. Place the PFB305W Wall Mount against the wall and mark the location of the center hole and the
four perimeter mounting holes.
2. Pre-drill the four perimeter holes as marked on the wall for the expansion bolts, using a drill bit
that is no wider than the expansion bolt.
3. Drill a 50-mm (approximately 2 in.) center hole to route the cables, if necessary.
4. Insert an expansion bolt into each pre-drilled perimeter hole, if necessary.
5. Pull the composite cable from the dome through the wall mount and pull it out of the other end of
the wall mount bracket.
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Transmission distance results verified by real-scene testing in Dahua's test laboratory. Actual transmission distances may
vary due to external influences, cable quality, and wiring structures.
1
depend on the type of coaxial cable used and the maximum video resolution:
720p:
500 m
(1640.42 ft)
1080p: 400 m
(1312.34 ft)
720p:
800 m
(2624.67 ft)
1080p: 600 m
(1968.50 ft)
720p:
380 m
(1246.72 ft)
1080p: 380 m
(1246.72 ft)
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