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3.4.3 Field Cables
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All system cables must be shielded, and the shield(s) must be bonded to earth ground.
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All Ethernet wiring must be done in accordance with TIA/EIA 568-C standards.
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To connect two outdoor Cat5e cables together use a waterproof coupler. For proper sealing, the dia-
meter of the Cat5e cable jacket must be between 6 and 7 mm.
To build the camera system cables, CohuHD recommends:
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For Ethernet/PoE++:
Belden p/n 7919A Multi-Conductor - Category 5e DataTuff® Twisted Pair
Cable,overall Beldfoil shield (100% coverage). CohuHD p/n 7610201-001.
Note: The maximum cable length for Ethernet is 100 m (328’). However, other factors may reduce
the distance Ethernet can be successfully used, such as EMI from other sources. Use an Ethernet
extender to extend an Ethernet cable beyond its distance limitation. CohuHD recommends Enable-IT
860 LRE Kit, which can be purchased with the camera system.
When wiring to the Ethernet pins, consider whether they are to be wired for the NIC (Network Interface
Card) in a PC or for system connections to a hub, switch, router, or similar device.
Ethernet Cable Wiring to a Hub, Switch, or Router (Straight Wiring)
Ethernet Function
Camera Connector
Corresponding RJ-45 Ethernet Pins
TX+
D
1
TX-
E
2
RX+
F
3
RX-
H
6
This Ethernet wiring is intended to connect directly to a hub, switch, or router. For connection directly to a PC, it will be nec-
essary to use either a crossover cable or a crossover adapter. Note: For clarity, only signal lines are shown.
Ethernet Cable Wiring to a PC (Crossover Wiring)
Ethernet Function
Camera Connector
Corresponding RJ-45 Ethernet Pins
TX+
D
3
TX-
E
6
RX+
F
1
RX-
H
2
This Ethernet wiring is intended to connect a camera to the NIC card in a PC. Note: For clarity, only signal lines are shown.
