ACR Electronics ACR-AIS-300 Manual De Usuario
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Y1-03-0222 Rev T4T4
NOTE:
The NAUTICAST-B contains no user serviceable parts. Contact your Service Agent
for repair for replacing the fuse fails to make the equipment serviceable.
5. SERIAL DATA INTERFACE
5.1 Power Connection / Data Connection
There is a 15-pin D-Sub female connector mounted on the back of the transponder cover. The standard data or
power and data cable assembly provided mates with this connector.
power and data cable assembly provided mates with this connector.
5.1.1
Power
12V DC (9.6-15.6V) is connected to the transponder power supply input via the data/power cable.
5.1.2
Data
A minimum keypad and display (MKD) unit, chart plotter or other display device may be connected to
the NAUTICAST-B unit via the appropriate cable assembly. The default baud rate of the data link is
38.4kBaud with 8 data bits, one stop bit and no parity.
The data interface conforms to IEC 61162-1.
VDM, VDO, ACA, ACS, ALR, TXT and ACK messages conform to NMEA 0183. Please refer to NMEA
0183 for full details of these AIS messages.
5.2 Serial Port Input/Output
There are two serial ports, one presenting RS422 format and the other RS232 format. Data can be input from
either or both ports.
The serial port interface(s) output:
At power-up boot-loader and main application splash text screens including version numbers and memory
status.
As a VHF Data Link Message (VDM) all incoming VHF Data Link (VDL) data received by the NAUTICAST-B.
The VHF data link own vessel (VDO) messages sent by the NAUTICAST-B over the VHF Data Link.
AIS regional channel assignment messages (ACA) received. These are derived from an incoming VHF Data
Link message (message 22) or a DSC message.
AIS channel management information source (ACS) messages.
Alarm messages (ALR, TXT).
The data interface will accept:
Personality programming messages
Alarm acknowledgement messages (ACK)
either or both ports.
The serial port interface(s) output:
At power-up boot-loader and main application splash text screens including version numbers and memory
status.
As a VHF Data Link Message (VDM) all incoming VHF Data Link (VDL) data received by the NAUTICAST-B.
The VHF data link own vessel (VDO) messages sent by the NAUTICAST-B over the VHF Data Link.
AIS regional channel assignment messages (ACA) received. These are derived from an incoming VHF Data
Link message (message 22) or a DSC message.
AIS channel management information source (ACS) messages.
Alarm messages (ALR, TXT).
The data interface will accept:
Personality programming messages
Alarm acknowledgement messages (ACK)
5.3 Power up messages
On power up the unit will report details of the firmware versions residing in the unit.
5.4 VHF data link messages (NMEA 0183 VDM)
This sentence is used to transfer the receipt of a VHF Data Link (VDL) message on either AIS radio channel, as
defined in ITU-R M.1371, using the “Six-bit” field type. The structure provides for the transfer of long binary
messages by using multiple sentences. Data messages should be transmitted in as few sentences as possible.
When a data message can be accommodated in a single sentence, then it shall not be split.
defined in ITU-R M.1371, using the “Six-bit” field type. The structure provides for the transfer of long binary
messages by using multiple sentences. Data messages should be transmitted in as few sentences as possible.
When a data message can be accommodated in a single sentence, then it shall not be split.