Table 1-2 Cables and maximum transmission distance (HDCVI)
Model Maximum Transmission Distance (ft/m)
SYV-75-3
720P (25 fps/30 fps): 1,640 ft/500 m
720P (50 fps/60 fps): 984 ft/300 m
1080P (25 fps/30 fps): 984 ft/300 m
1.3.2 RS-485 Cable Requirements
When using 0.56 mm (24AWG) twisted-pair line, depending on dierent baud rates, the theoretical
maximum transmission distance is dierent.
Table 1-3 Theoretical maximum transmission distance
Baud Rate Maximum Transmission Distance
2400 bps 1800 m
4800 bps 1200 m
9600 bps 800 m
The maximum transmission distance will be reduced in the following conditions: When thinner
communication cables are used; the Device is used in places with intense electromagnetic
interference; too many devices are connected to the RS-485 cable. Otherwise, maximum
transmission distance will be increased.
1.3.3 Selecting Power Cable
1.3.3.1 Power Cable
Depending on the power cable specication, the same cable diameter corresponds to dierent
transmission distance.
●
For 24 VAC power supply, see "5 Cable Diameter (24 VAC) and Transmission Distance".
●
For 12 VDC power supply, see "6 Cable Diameter (12 VDC) and Transmission Distance".
●
For 24 VDC power supply, see "7 Cable Diameter (24 VDC) and Transmission Distance".
●
For 36 VDC power supply, see "8 Cable Diameter (36 VDC) and Transmission Distance".
●
For 48 VDC power supply, see "9 Cable Diameter (48 VDC) and Transmission Distance".
1.3.3.2 PoE Power Cable
Table 1-4 PoE power cable
POE
Specication Network Cable Specication
AF
CAT5E and network cables with higher standard.AT
HiPoE or BT
2
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