Table of Contents
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Dome requirements
For proper operation, adhere to the following operational, load, cable, and power requirements for Legend IP domes.
Minimum load requirements
Table 1 lists the load requirements for all Legend IP dome configurations.
CAUTION:
For safety, the mounting surface, hardware, and procedure used for securing the dome must support
the weight of the dome, mount (if used), cables, and any structural or environmental vibration according
to local codes.
Table 1.
Minimum load requirements of dome configurations
Minimum load
100 lb.
50 lb.
Cable requirements
Table 2 lists the requirements for the cables that connect to the dome.
CAUTION:
To ensure the security of your surveillance system, your IP network should be isolated and secured from
unauthorized access.
Table 2.
Cable requirements
Operation
Ethernet (for digital
CAT-5 Ethernet cable (without cable boots)
video and data)
Power
24 VAC cable. To determine the size of cable needed for individual applications, see
Power cable size and length requirements
Alarms and relays
22 to 26 gauge (0.64 to 0.4 mm) unshielded, two-conductor, twisted-pair (UTP) cable
Analog video
75 ohm coaxial cable; or
22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP) cable
Note:
Analog data
For RS-422: 22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP) cable
For RS-485: 22 gauge (0.64 mm) shielded, two-conductor, twisted-pair (STP) cable
Note:
When using unshielded twisted-pair cable for video and data, the wires can share the same jacket but must remain
separate twisted pairs.
Dome configuration
• Rugged, cast aluminum pendant-mount housing (with any mount)
• Heavy duty housing (with any mount)
• Pressurized housing (with any mount)
• Swing-arm mount (with any dome)
All other dome and mount configurations
Cable requirement
Use only crimp-on BNC connectors. Do not use screw-on connectors.
on page 11.
Chapter 1
9
Introduction
Length
feet
meters
385
100
10,000
3,000
3,000
900
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Troubleshooting
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