Installation Manual

Relationship between cable diameter (24V AC) and transmission distance 17
Relationship between Cable
Diameter (12V DC) and Transmission
Distance
 The recommended transmission distances are for reference only, and the actual conditions
shall prevail.
 The chart below gives the maximum transmission distance of cables with certain diameters
when the 12V DC power source voltage lose rate is bellow 10%.
 For cameras powered by direct current, the maximum voltage loss rate allowed is 10%.
 Cables mentioned in the table below are copper cables ( the resitivity of copper ρ =
0.0175Ω ∗ mm
2
/m)
Transmission
power (W)
Cable diameter (mm)
0.8000 1.000 1.250 2.000
Transmission distance Feet (m)
5
122.13 (37.23)
190.83 (58.16)
298.17 (90.88)
763.31 (232.66)
10
61.06 (18.61)
95.41 (29.08)
149.08 (45.44)
381.66 (116.33)
15
40.71 (12.41)
63.61 (19.39)
99.39 (30.29)
254.44 (77.55)
20
30.53 (9.31)
47.71 (14.54)
74.54 (22.72)
190.83 (58.16)
25
24.43 (7.45)
38.17 (11.63)
59.63 (18.18)
152.66 (46.53)
30
20.35 (6.20)
31.80 (9.69)
49.69 (15.15)
127.22 (38.78)
35
17.45 (5.32)
27.26 (8.31)
42.60 (12.98)
109.04 (33.24)
40
15.27 (4.65)
23.85 (7.27)
37.27 (11.36)
95.41 (29.08)
45
13.57 (4.14)
21.20 (6.46)
33.13 (10.10)
84.81 (28.85)
50
12.21 (3.72)
19.08 (5.82)
29.82 (9.09)
76.33 (23.27)
55
11.10 (3.38) 17.35 (5.29) 27.11 (8.26) 69.39 (21.15)
60
10.18 (3.10)
15.90 (4.85)
24.85 (7.57)
63.61 (19.39)
65
9.39 (2.86)
14.68 (4.47)
22.94 (6.99)
58.72 (17.90)
70
8.72 (2.66)
13.63 (4.15)
21.30 (6.49)
54.52 (16.62)
75
8.14 (2.48)
12.72 (3.88)
19.88 (6.06)
50.89 (15.51)
80
7.63 (2.33)
11.93 (3.64)
18.64 (5.68)
47.71 (14.54)
85
7.18 (2.19)
11.23 (3.42)
17.54 (5.35)
44.90 (13.69)
90
6.78 (2.07)
10.60 (3.23)
16.56 (5.05)
42.41 (12.93)
95
6.43 (1.96)
10.04 (3.06)
15.69 (4.78)
40.17 (12.25)
100
6.11 (1.86)
9.54 (2.91)
14.91 (4.54)
38.17 (11.63)