Installation Preparation
2
Table 1-1 Cables and maximum transmission distance (network)
Table 1-2 Cables and maximum transmission distance (
HD Analog
)
Table 1-3 Theoretical maximum transmission distance
Model
Maximum Transmission Distance (ft/m)
RG59/U
750ft/229m
RG6/U
1,000ft/305m
RG11/U
1,500ft/457m
Model
Maximum Transmission Distance (ft/m)
SYV-75-3
720P (25 fps/30 fps): 1,640ft/500m
720P (50 fps/60 fps): 984ft/300m
1080P (25 fps/30 fps): 984ft/300m
When using 0.56 mm (24AWG) twisted-pair line, depending on different baud
rates, the theoretical maximum transmission distance is different.
Depending on the power cable specification, the same cable diameter
corresponds to different transmission distance.
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.
1.3.2 RS-485 Cable Requirements
1.3.3.1 Power Cable
Baud Rate
Maximum Transmission Distance
2400bps
1800m
4800bps
1200m
9600bps
800m
For 24V AC power supply, see "5 Cable Diameter (24V AC) and Transmission
Distance".
For 12V DC power supply, see "6 Cable Diameter (12V DC) and Transmission
Distance".
For 24V DC power supply, see "7 Cable Diameter (24V DC) and Transmission
Distance".
For 30V DC power supply, see "8 Cable Diameter (30V DC) and Transmission
Distance".
For 36V DC power supply, see "9 Cable Diameter (36V DC) and Transmission
Distance".
