CNS Systems is committed to providing responsive and timely support of our high quality and standardized hardware and software.
A one year warranty plan, i.e. Investment Protection, is provided with each new product purchased. Investment Protection for following years may be purchased for continued technical support and software upgrades.
To request technical support, please complete the form below.
What is AIS?
AIS stands for Automatic Identification System and is an automatic tracking and monitoring system that is used on-board vessels and aircraft in order to identify and locate vessels. Identification, position, course and speed are part of the information that is exchanged with other AIS equipped vessels or aircrafts and control centers on-shore.
The International Maritime Organization (IMO) and the International Convention for the Safety of Life at Sea (SOLAS) requires AIS to be fitted aboard international voyaging ships with gross tonnage of 300, cargo ships of 500 gross tonnage and all passenger ships regardless of size.
What are the differences between a Class A and Class B transponder?
There are several important functional differences between AIS Class A and Class B transponders:
What is SOTDMA?
Self-Organizing Time Division Multiple Access (SOTDMA) is a concept in which the time slots are synchronized to UTC, and stations advertise their intention to transmit in a specified time slot by means of a reservation protocol carried in a prior transmission.
For convenience, a group of contiguous time slots spanning a period of 60 seconds is termed a super-frame. Each time slot may be used by a radio transceiver (mounted on aircraft, ground vehicles, and vessels or at fixed ground stations) for transmission of data. The exact timing of the slots and planned use of them for transmissions are known to all users in range of each other, so that the data link can be used efficiently and users do not transmit simultaneously.
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