Communication solutions for power utilities
1U SHELF TYPE MAS-2
WITH ASYNCHRONOUS PROGRAMMABLE MODEM MAFP - Rev. 9 (January 2018)
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4.1.2
Signalling
Interface
TD/103 LED
Amber. Indicates data input
RD/104 LED
Amber. Indicates data output.
RTS/105 LED
Amber. Indicates request to transmit and lights up when
the signal is in active state.
CTS/106 LED
Amber. Indicates the modem is ready to transmit and
lights up when the signal is in active state.
DSR/107 LED
Amber. Indicates the modem is working correctly.
CD/109 LED
Amber. Indicates the detection of line signals and lights
up when the level of the carrier is above a pre-set level.
It goes out in the opposite case.
Tests
TEST LED
Amber. The LED lights up when any kind of test is
carried out in the modem (sending of signals or loops).
AUX LED
Amber. It should always be alight. If it goes out, it must
be checked that the microswitch 1 of the MI2 is in the
ON position.
Alarm and loops
DATA LOOP LED
Amber. Lights up when data loop is carried out.
LINE LOOP LED
Amber. Lights up when line loop is carried out.