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User Manual
Lorenz AIS 3000 RT
x x = Sequence Number , 0 to 9
x IIII, II, a = Region Northeast corner latitude – N/S
x yyyyy.yy,a1 = Region Northeast corner longitude – E/W
x llll.ll,a = Region Southwest corner latitude – N/S
x y1y1y1y1y1.y1y1,a2 = Region Southwest corner longitude – E/W
x x1 = Transition Zone Size
x x2x2x2x2 = Channel A
x x3 = Channel A bandwidth
x x4x4x4x4 = Channel B
x x5 = Channel B bandwidth
x x6 = Tx/Rx mode control
x x7 = Power level control
x a3 = Information source
x x8 = In-Use Flag
x hhmmss.ss = Time of "in-use" change
Channel management information source messages (NMEA 0183 ACS)
This sentence is used in conjunction with the ACA sentence and identifies the originator of an ACA message.
ACS Message Format
$--ACS,x,xxxxxxxxx, hhmmss.ss,xx,xx,xxxx*hh <CR><LF>
x x = Sequence Number , 0 to 9
x xxxxxxxxx =MMSI of originator
x hhmmss.ss = UTC of receipt of channel management information
x xx = UTC Day, 01 -31
x xx = UTC Month, 01 -12
x xxxx = UTC Year
AIS Alarm Messages (NMEA 0183 ALR, Text)
ALR message format
$--ALR,hhmmss.ss,xxx,A,A,c--c*hh<CR><LF>
Where
x hhmmss.ss = Time of alarm (UTC)
x xxx = Unique alarm number
x A = Alarm condition
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User Manual
Lorenz AIS 3000 RT
Serial Data Interface
Power Connection / Data Connection
There is a 15-way D-type male connector mounted under the transponder top cover. The standard data or power and data
cable assembly provided mates with this connector.
Power
12V DC (9.6-15.6V) is connected to the transponder power supply input via the cable assembly LD1873.
Data
A PC, chart plotter or other NMEA compatible display device may be connected to the AIS 3000 RT 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. No
handshaking is used.
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.
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:
x At power-up boot-loader and main application splash text screens including version numbers and memory status.
x As a VHF Data Link Message (VDM) all incoming VHF Data Link (VDL) data received by the AIS 3000 RT.
x The VHF data link own vessel (VDO) messages sent by the AIS 3000 RT over the VHF Data Link.
x AIS regional channel assignment messages (ACA) received. These are derived from an incoming VHF Data Link
message (message 22) or a DSC message.
x AIS channel management information source (ACS) messages.
x Alarm messages (ALR, TXT).
The data interface will accept:
x Personality programming messages
x Alarm acknowledgement messages (ACK)
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