The transmission distance – IC Realtime 1.3 Megapixel 720P HD-AVS IR PTZ Dome Camera User Manual
Page 35
7 Appendix 2 The Relationship between the 24V AC Cable
Diameter and the Transmission Distance
It is the recommended transmission distance when the cable diameter is fixed and the 24V AC power
consumption is below 10%. For the AC device, the max permission voltage power consumption is
10%. For example, when a device of rated power 80VA installed from the transformer 35 inches (10m),
then the min cable diameter is 0.8000mm.
mm
Feet（m）
0.8000
1.000
1.250
2.000
W
10
283
(86)
451
(137)
716
(218)
1811
(551)
20
141
(42)
225 (68)
358
(109)
905
(275)
30
94 (28)
150 (45)
238 (72)
603
(183)
40
70 (21)
112 (34)
179 (54)
452
(137)
50
56 (17)
90
(27)
143 (43)
362
(110)
60
47 (14)
75
(22)
119 (36)
301
(91)
70
40 (12)
64
(19)
102 (31)
258
(78)
80
35 (10)
56
(17)
89
(27)
226
(68)
90
31
(9)
50
(15)
79
(24)
201
(61)
100
28
(8)
45
(13)
71
(21)
181
(55)
110
25
(7)
41
(12)
65
(19)
164
(49)
120
23
(7)
37
(11)
59
(17)
150
(45)
130
21
(6)
34
(10)
55
(16)
139
(42)
140
20
(6)
32 (9)
51
(15)
129
(39)
150
18
(5)
30 (9)
47
(14)
120
(36)
160
17
(5)
28 (8)
44
(13)
113
(34)
170
16
(4)
26 (7)
42
(12)
106
(32)
180
15
(4)
25 (7)
39
(11)
100
(30)
190
14
(4)
23 (7)
37
(11)
95
(28)
200
14
(4)
22 （6)
35
(10)
90
(27)
28