AIS Clasa B V3100 SOTDMA

The main difference lies in the transmission technology. The V3100 uses SOTDMA (Self-Organising Time Division Multiple Access) technology, the same as Class A AIS units. This allows it to reserve transmission slots, ensuring your data is sent even in high-traffic areas. It also offers:

Higher transmission power: 5 watts, compared to 2 watts for standard AIS units (CSTDMA). Faster update rate: up to every 5 seconds depending on speed, compared to 30 seconds for a CSTDMA.

The V3100 offers comprehensive connectivity to integrate with your system:

NMEA 2000: One Micro-C port for simple and modern connection to most multifunction displays. NMEA 0183: Two ports to ensure compatibility with older equipment. USB: One waterproof Mini-B port, primarily used for initial setup via a computer.

The V3100 AIS transponder is designed to operate on a 12V or 24V DC electrical system, making it compatible with the vast majority of recreational and commercial vessels.

The transmission frequency of dynamic data (position, speed, heading) varies depending on your vessel's speed:

Over 23 knots: every 5 seconds.Between 14 and 23 knots: every 15 seconds.Between 2 and 14 knots: every 30 seconds.Under 2 knots, at anchor or moored: every 3 minutes.

Yes, the V3100 has a silent mode. When activated, the device stops transmitting your vessel's information but continues to receive all AIS data from surrounding boats. The 'Tx/Silent' LED lights up solid orange to indicate that this mode is active.

The device requires two antennas and uses the following connectors:

VHF antenna: One standard SO-239 connector (female). GPS antenna: One SMA connector. An adapter is included to facilitate the connection.

Yes, absolutely. The V3100 is equipped with two NMEA 0183 ports, allowing it to communicate with chartplotters, autopilots, or other older instruments that do not have NMEA 2000 connectivity.

The V3100 is designed to be energy-efficient. Its typical power consumption is less than 3 watts on average with a 12V DC power supply.

Programming your MMSI number and other static vessel data (name, dimensions, etc.) is done by connecting the V3100 to a computer via its USB Mini-B port. You will need to use the provided configuration software to enter this information.

The Simrad V3100 is a Class B AIS transponder. However, it uses SOTDMA technology, which is normally reserved for Class A devices, giving it performance far superior to traditional Class B AIS units (CSTDMA).

A red, steady error light indicates that the MMSI number has not been programmed into the device. The AIS cannot transmit without a valid MMSI. You must configure it using the supplied software.

The V3100 supports the two most common marine communication protocols: NMEA 2000 and NMEA 0183. This ensures broad compatibility with both modern and older navigation equipment.

The "Tx/Silent" LED flashing green indicates the device is actively transmitting AIS data. The flash rate varies with the vessel's speed, reflecting the position update frequency.

Yes, for your computer to recognize the AIS V3100 when connected via USB, you will need to install the USB drivers. These are usually included on the software CD provided with the device.