User Manual for AIT2500 V1.01
TEL + 44 1179 554474 www.digitalyacht.co.uk
1. Notices
Congratulations on the purchase of your AIT2500 Class B+ AIS Transponder.
When reading this manual please pay attention to warnings marked with the warning triangle shown on
the left. These are important messages for safety, installation and usage of the product.
1.1
Safety warnings
This equipment must be installed in accordance with the instructions provided in this manual.
This AIS transponder is an aid to navigation and must not be relied upon to provide accurate navigation
information. AIS is not a replacement for vigilant human lookouts and other navigation aids such as
RADAR. The performance of the transponder may be seriously impaired if not installed as instructed in
the user manual, or due to other factors such as weather and or nearby transmitting devices.
Compatibility with other systems may vary and is reliant on the third party systems recognising the
standard outputs from the transponder. The manufacturer reserves the right to update and change these
specifications at any time and without notice.
Do not install this equipment in a flammable atmosphere such as in an engine room or near to fuel tanks.
1.2
General notices
Position source
All marine Automatic Identification System (AIS) transponders utilise a satellite based location system such as the Global
Positioning Satellite (GPS) network.
The accuracy of a GPS position fix is variable and is affected by factors such as the antenna positioning, how many
satellites are used to determine a position and how long satellite information has been received for.
Compass safe distance
The compass safe distance of this unit is 0.2m or greater for 0.3° deviation.
RF emissions notice
Caution: The AIS transponder generates and radiates radio frequency electromagnetic energy. This equipment must be
installed and operated according to the instructions contained in this manual. Failure to do so can result in personal injury
and / or AIS transponder malfunction.
Caution: Never operate the AIS transponder unless it is connected to a VHF antenna.
To maximise performance and minimise human exposure to radio frequency electromagnetic energy you must make sure
that the antenna is mounted at least 1.5 metres away from the AIS transponder and is connected to the AIS transponder
before power is applied. The system has a Maximum Permissible Exposure (MPE) radius of 1.5m. This has been
determined assuming the maximum power of the AIS transponder and using antennas with a maximum gain of 3dBi.The
antenna should be mounted 3.5m above the deck in order to meet RF exposure requirements. Higher gain antennas will
require a greater MPE radius. Do not operate the unit when anyone is within the MPE radius of the antenna (unless they
are shielded from the antenna field by a grounded metallic barrier). The antenna should not be co-located or operated in
conjunction with any other transmitting antenna. The required antenna impedance is 50 Ohms.
Warranty
This product is supplied with standard 2 year RTB warranty.
Any attempt to tamper with or damage this product will invalidate the warranty.
