KBC Networks FDVA4-DB1-M1T-R-WSC - Manual (Page 12)

Manual-FDVA4DB1-Rev1009.pdf Page 12 of 14
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① The 2 wires RS485/4 wires RS485 output bus pull-up and pull-down resistance usually should be
switched on. But if there are several fiber transmitters or receivers, 2 wires RS485/4 wires RS485
output interfaces are connected together, only one of the 2 wires RS485/4 wires RS485 output Pull-up
and Pull-down resistance should be switched on, the others should be switched off.
② The terminators can be switched on or off according to the RS485 bus connection. When the fiber
transmitter or receiver is placed at the end point of bus, the terminators are usually switched on, but
not be must, so the same as RS422.
Receiver Right View
Connectors:
DC or AC Power Supply between 12V and 24V can be used on this product.
• DC:
＋ : +12VDC~+24VDC
－ : Power Supply Ground
• AC:
There is no difference between ＋/－; the power supply can be connected into the
device directly.
FIB:
Fiber Optic ST
GND: Grounded pin
LEDs Definition:
POW:
Power Supply. On if power input is in OK.
FIB: Fiber Link. Off if the link is in OK.
V1: ; Channel 1 Video. On if video output is in OK.
V2: ; Channel 2 Video. On if video output is in OK.