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Cable Guidelines
Power supply cable maximum length (feet/meters)
Total
load
Cameras with AC/DC power supplies
3.5 W
3.5 W
Note
Note
Video cable maximum length (feet/meters)
Maximum length (feet/meters)
* Copper clad steel core, 95% braided shield
We recommend these NVT video transceivers (sold separately by NVT Inc.):
NV-212A (500 ft/152 m—26 Ω)**
NV-213A/A-M (1000 ft/305 m—52 Ω)**
NV-652R, NV-862R or NV-1662R (3000 ft/914 m—163 Ω)**
** Distances have been calculated using 24 AWG Twisted Pair wire.
Note
AWG
18
20
22
24
Note
Document 800-01605 Rev A
04/08
Power
24 AWG
supply
15 VDC
180/55
24 VAC
470/143
Calculations are based on an unregulated linear power supply which
would be the worst case. Using a regulated or switching power
supply can increase the cable distance. We recommend using a CSA
Certified/UL listed Class 2
electrical safety standards.
Calculations are based on a 15VDC power supply to allow for longer
cable runs.
Cable type
Wire gauge
We recommend that you measure the wire distance to ensure the
capability of the twisted pair product is not exceeded. Use an
ohmmeter to measure wire resistance by shorting the two conductors
together at the far end, then measure the loop resistance out and
back. Compare to the table below.
Maximum length (feet/meters)
250/76
500/152
3 Ω
6 Ω
5 Ω
10 Ω
8 Ω
17 Ω
13 Ω
26 Ω
Use point-to-point Unshielded Twisted Pair wire only.
Wire gauge
22 AWG
18 AWG
290/88
730/220
760/232
1926/587
power adapter to ensure compliance with
RG-59
RG-6
23 AWG*
18 AWG*
750/229
1500/457
1000/305
1500/457
13 Ω
19 Ω
20 Ω
30 Ω
33 Ω
48 Ω
52 Ω
78 Ω
B
16 AWG
1170/352
3065/934
RG-11
14 AWG*
2000/610
2000/610
26 Ω
40 Ω
66 Ω
108 Ω
35
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