Westermo ODW-632 - Manual (Page 8)

8 6650-2253
STATUS
C
NO
NC
LED’s Switches
CH 2
SFP
Fibre transceiver
TX
RX
CH 1
SFP
Fibre transceiver
TX
RX
Internal
Electronics
ODW-632
COM
COM
+VA O
V
P
+VB
POWER
T/R -
T/R+
RS -485
R -
R+
+5V 0V
+5V 0V
O
C
P
O
V
P
Functional description
OVP Over Voltage Protection
OCP Over Current Protection
Converter serial interface – optical fibre
ODW-632 is a fibre optic modem that converts between electrical RS-485 and a fibre
optical link.
ODW-632 can also be used to convert from RS-232 to RS-485 by using a
ODW-622 in the same link as ODW-632.
Repeater – optical fibre links
ODW-632 is a fibre optic repeater that repeats received data from one fibre link out to
the other link. This is useful e.g. for long distance communication, where electromagnetic
interference may occur or when isolation of the electrical network is needed. The maxi-
mum optical fibre distance depends on selected fibre transceiver and fibre type. Distances
up to 80 km (50 miles) are available.
Data rate up to 1.5 Mbit/s
ODW-632 converts data using rates from 300 bit/s up to 1.5 Mbit/s. Retiming of the data
ensures that the correct signal form is transmitted from the ODW-632 converter.