Westermo ODW-621, Руководство пользователя, Страница: 9 / 20

9
6650-2223
Point-to-point communication via fibre optical network
The serial data is transferred via a fibre optic network between two ODW-621.
This application 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 between two units depends on selected fibre transceiver and
fibre type. Distance up to 80 km (50 miles) are available.
Note! The Bi-di transceivers must always be used in pair, see example:
TX 1310 nm RX 1310 nm
RX 1550 nm TX 1550 nm
POWER CH 1
COM +VA +VB COM
POWER CH 1
COM +VA +VB COM TX RX TX RX
Fibre optical connection
at point-to-point communication
POWER CH 1
COM +VA +VB COM
POWER CH 1
COM +VA +VB COM
TX/
RX
TX/
RX
Fibre optical connection
at point-to-point communication (Bi-di transceiver)
Bi-di transceiver, TX 1310 nm,
RX 1550 nm. Bi-di transceiver, TX 1550 nm,
RX 1310 nm.