User Manual

Marine Systems
Aviation Recorders
Initial Issue
Aug. 23/10
165M1161--00
Page 1--4
14
Broadcast Safety
Related Message
1to5
slots
(varies)
Safety--related text for broadcast communication that is received by
all units that can receive the message; Warns of an AtoN malfunc-
tion
17 GNSS Broadcast
Binary Message
1to5
slots
(varies)
Differentially corrects GNSS positions to Differential Global Naviga-
tion Satellite System (DGNSS) positions; Should be transmitted by
a base station, which is connected to a DGNSS reference source
and configured to provide DGNSS data to receiving stations; Spe-
cial option
21 Aids--to--Navigation
Report
2slots AtoN position report that is usually transmitted every 3 minutes and
is meant to be seen by all AIS transponders; Contains information
about the AtoN, such as the origination MMSI, name of the AtoN (if
applicable), and the type of AtoN (fixed or floating); Sends the Aid
to Navigation Report and a warning to approaching vessels
25 AtoN Position Re-
port
1 Intended for short, infrequent data transmissions and is designed to
save bandwidth; Used for chaining
1.3. Technical Specifications
The AIS AtoN is fully compliant to the technical specifications:
F Defined in IEC 62320--2
F Defined in ITU.R M.1371-3
F IALA A--126
TDMA Transmitter
TX Frequency: 156.025 MHz - 162.025 MHz
Transmitter Power: 12.5 W max.
Channel Bandwidth: 25 kHz
Output
As defined in ITU.R.M.1371: Message 6, Message 8, Message 12, Message 14,
Message 17, Message 21, and Message 25
Power Supply
12 VDC nominal +
10 % (power to the unit is supplied by an AC converter which
plugs into a standard wall receptacle).
Power Consumption for Message 21
Message 21 (FATDMA) every 3 minutes for 30 minutes (10 full cycles):
F Average Instantaneous Current: 14.2 mA (Vin = 12.0 Vdc)