SRT AIS, Installation And Operation Manual

Page: 34 / 92

Installation and Configuration
Page 32
All sensor ports can be configured via the Interface settings menu which can
be found under the ‘
System settings’-> ‘Interfaces’ menu option.
The Interface settings menu also includes the ability to disable the requirement
for external GNSS sensors to provide a DTM (Datum) sentence.
3.4.6 Alarm Connections
The transceiver also provides connections to the alarm relay contacts. The
alarm relay connections are described in Table 3.
Table 3 Alarm Relay Connections
Alarm connection Function Contact rating
COM Alarm relay common
connection
2A at 220VDC or 60W
maximum
NC Alarm relay normally
closed connection
I f an external GNSS device which does not provide a DTM
sentence is connected to the transceiver and the trans-
ceiver is configured to require DTM sentences, the exter-
nal GNSS data will not be accepted by the transceiver. If
no DTM sentence is required the WGS84 datum will be
used as a coordinate origin and the external GNSS de-
vice must be configured to output position using this da-
tum.
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