AIS700 - Class B AIS Transceiver w/ Antenna Splitter

The AIS700 from Raymarine is a Class B Automatic Identification System (AIS) transceiver designed for use with Raymarine multifunction navigation display systems. As a Class B AIS transceiver, the AIS700 not only receives broadcasts from other vessels, it also transmits your own boat’s information too helping you to be seen on other vessels’ systems

FEATURES

• Full transmit and receive AIS for enhanced situational awareness and safety
• Latest SO-TDMA networking for longer range and faster performance
• Built-in antenna splitter simplifies installation with existing VHF radio antenna
• NMEA2000, NMEA0183, PC and SeaTalkng Compatible
• Software or hardware switchable Silent Mode for enhanced security when needed

TECHNICAL SPECIFICATIONS

Environmental Specifications

• Operating temperature -15°C to +55°C
• Storage temperature -20°C to +75°C
• Water ingress IPX6 and IPX7
• Humidity Up to 93% @ 40°C

Power Specifications

• Power Supply: 12v and 24 nominal
• Power Consumption: <3W
• Peak current: 3A
• Load Equivalency Number: 1 LEN

RF Specifications

• DSC Receiver: Implemented by time sharing with one TDMA receiver
• Receiver 1 band: 156.025 MHz to 162.025 MHz (in 25KHz steps)
• Receiver 2 band: 156.025 MHz to 162.025 MHz (in 25KHz steps)
• Transmitter band: 156.025 MHz to 162.025 MHz (in 25KHz steps)
• Transmitter specification: To meet IEC 62287-2 relevant sections
• Receiver specification: To meet IEC 62287-2 relevant sections
• Transceiver specification: To meet IEC 62287-2 relevant sections
• GPS receiver: u-blox MAX-M8W
• GPS receiver channels: 72 channels
• GPS Cold start acquisition time: 26s nominal
• Positional source: GPS & GLONASS
• AIS performance: 5W SOTDMA

Antenna Splitter Specifications

• Operating frequency range: 156.0MHz to 162.025MHz Transmitting | 156.0MHz to 162.025MHz Receiving
• Insertion loss AIS RX path: 0dB
• Insertion loss AIS TX path: <1dB
• Insertion loss VHF RX path: 0dB
• Insertion loss VHF TX path: <1dB
• Power handling AIS port: Maximum 5W input
• Power handling VHF port: 25W input
• Switching time RX to VHF TX: 10uS Max
• Switching time RX to AIS TX: 10uS Max
• Switching time VHF TX to AIS TX: 10uS Max
• Switching time any TX to RX: 10uS Max
• VHF port impedance: 50 Ohms
• AIS port impedance: 50 Ohms
• Antenna port impedance: 50 Ohms
• VHF to AIS port isolation: >28dB (both directions)
• Minimum VHF input power for switching: 400mW

External Connections

• VHF antenna connector type SO-239 coaxial
• VHF radio connector type SO-239 coaxial
• GNSS antenna connector 50Ω TNC coaxial
• NMEA2000 DeviceNet male
• USB Micro-B
• External interface isolation NMEA0183 and NMEA 2000 interfaces to incorporate galvanic isolation from power supply as required by the relevant interface specification.
• NMEA0183 interface 1 (MFD connection) NMEA 0183 HS (IEC 61162-1) compliant, bi-directional, RS422 levels. 4 wire interface (differential signalling). Configurable baud rate. Input to MFD from AIS.
• NMEA0183 interface 2 (NMEA0183 instrument connection) NMEA 0183 (IEC 61162-1) compliant, bi-directional, RS422 levels. 4 wire interface (differential signalling). 4 wire interface (differential signalling) Configurable baud rate
• USB interface (PC connection) Protocol NMEA 0183 HS (IEC 61162-1) compliant, bi-directional USB port, 38.4 kBaud

NOTE:

The AIS700 is a Class B AIS Transceiver with an Integrated Antenna Splitter. This means that a marine VHF radio can be connected to the AIS700 and, using the integrated antenna splitter technology, share a marine VHF antenna with the integrated AIS transceiver.

The marine VHF radio frequency band, which is used by both VHF radios and AIS transceivers spans the frequency range from 156MHz to 162MHz. VHF radios tend to operate at the bottom of the range, and AIS transceivers tend to operate at the top of the range. Some marine VHF antennas are optimized to provide the best performance at either the bottom of the range for use with VHF radios, and some are optimized for the top of the range for use with AIS transceivers. However, the AIS700 requires a wider band antenna to provide good performance for both the VHF radio and the AIS transceiver.

Using a VHF antenna optimized for VHF radio frequencies may cause transmissions from the AIS transceiver to be reflected back into the AIS700 due to the poor impedance match of the antenna and AIS transceiver frequencies. Although this will not damage the AIS700 (because AIS class B transmissions are of substantially lower power than VHF transmissions) it could result in the AIS700 triggering a system ‘VSWR’ alarm.

Raymarine DOES NOT recommend the use of VHF antennas optimized for AIS or Radio Frequencies as this can cause a VSWR fault alarm or permanently damage the AIS700.

The recommendation is to select a Marine broad band VHF Antenna that spans the VHF Radio Frequency range with the following specification:

• VHF Radio Frequency Band: 156 MHz to 162 MHz
• VSWR (voltage standing wave ratio): 1.5:1 (ideal) 2:1 (max)
• Impedance: 50 Ohms
• Gain: 3dBi (max)
• Connector: PL-259

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