Cable requirements, Table 3. cable requirements, Power cable size and length requirements – Interlogix UltraView PTZ Dome Series User Manual
Page 14
CyberDome II
Installation Manual
6
Cable requirements
Table 3 lists the requirements for the cables that connect to the dome.
Note: When using UTP cable for video and data, the wires can share the same jacket but must remain separate twisted pairs.
Power cable size and length requirements
Using the proper gauge of power cable will ensure proper operation and avoid voltage drops. See Table 4 for
the recommended cable gauge for varying maximum cable lengths and power draws.
Table 3.
Cable requirements
Operation
Cable requirement
Length
feet
meters
Data
For RS-422: 22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP)
cable
10,000
3,000
For RS-485: 22 gauge (0.64 mm) shielded, two-conductor, twisted-pair (STP) cable
3,000
900
Video
75 ohm coaxial cable (RG59 with lift/gain)
1,600
486
22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP) cable
Note: Use only crimp-on BNC connectors. Do not use screw-on connectors.
1,250
381
Alarm
Cat-5 cable (recommended)
1,250
381
Relay contacts
Cat-5 cable (recommended). Contacts rated for 60 W DC, 62.5 W AC with 2 A max.
1,250
381
Power
24 VAC cable. To determine the size of cable needed for individual applications, see
Table 4.
Recommended power cable gauges based on maximum lengths for an operating voltage of 24 VAC (±4 VAC)
Wire gauge
Domes with fan (20 VA)
Domes with
12 W heater/fan (x2) (45 VA)
HD domes with
23 W heater/fan (x2) (66 VA)
AWG
mm (dia.)
feet
meters
feet
meters
feet
meters
10
2.60
1569
478
784
238
490
149
12
2.05
988
301
494
150
309
94
14
1.62
620
188
310
94
194
59
16
1.29
391
119
196
59
122
37
18
1.02
246
74
123
37
77
23
WARNING: Be aware that the power requirements for CyberDome II and CyberDome are different, which may require
new cabling when replacing CyberDomes with CyberDome II domes.