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Start and usage.
Power on.
Connect the power cord to the 21-1601 / 21-1651 and then connect to AC-mains or
DC-supply.
The “LO”-LED shall be lit green. If not, try to cross-connect the fibers at one end of
the link.
LED-status.
There are 12 LED-indicators at the front panel.
CON
A green LED is lit when Contra is selected.
CO
A green LED is lit when Codir is selected.
TXD
A yellow LED indicates data sent at selected electrical interface.
RXD
A yellow LED indicates data received at selected electrical interface.
RTS
A yellow LED indicate the status of RTS, (Ready To Send) on interface RS530 .
