Description

The B921 is a 2W CSTDMA Class B AIS transceiver, delivering em-traks advanced performance and reliability through next-gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real-time, even at range limit, so you always have the complete picture and the time to respond.

em-traks intelligent connectivity means the B921 can be connected to any chart-plotter and comes equipped with integrated GPS technology and best-in-class, ultra-low power consumption. Installation is also simplified with our unique FLEXI-FIT bracket system to have you up and running in no time at all.

• Certified AIS Class B 2W CSTDMA
• Global Certification USCG / FCC / Canada / Europe
• SRT-AIS transceiver engine for superlative proven performance
• FLEXI-FIT bracket system for easy, convenient and secure installation
• Integrated high-performance GPS receiver & antenna (external antenna optional)
• Water, pressure spray and damp proof IPx6 & IPx7
• Ruggedized protected from vibration, shock and extreme temperatures
• Small and lightweight
• Ultra-low power consumption best in class
• NMEA0183 & NMEA2000
• Automated health and performance monitoring
• Silent Mode (transmit-off) function
• Enhanced RF screening to protect against electromagnetic interference
• Built-in power surge protection

PHYSICAL AND ENVIRONMENTAL SPECIFICATION Size (w x h x d) 150 x 115 x 45mm Weight 375g Operating temperature -25C to +55C Storage temperature -25C to +70C Ingress protection IPx6 and IPx7

ELECTRICAL SPECIFICATION Supply voltage 12V or 24V DC Supply voltage range 9.6V 31.2V DC Average current (at 12V) 135mA Peak current 2A Galvanic isolation NMEA 0183 inputs only, NMEA 2000, VHF antenna port

CONNECTORS VHF antenna SO-239 GNSS TNC Power/NMEA 0183/silent mode 12-way circular multipole NMEA 2000 5 way Micro-C connector USB USB Micro-B

DATA INTERFACES NMEA 0183 2 x bi-directional ports NMEA 2000 NMEA 2000 Ed 3.101, LEN=1 USB PC virtual com port for NMEA 0183 data

STANDARDS COMPLIANCE AIS standards IEC 62287-1 Ed. 3. ITU-R M.1371.5 Product safety standards EN60950-1 2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013 EN62311:2008 Environmental standards IEC 60945 Ed. 4 Serial data interface standards IEC 61162-1 Ed 5.0. IEC 61162-2 Ed 1.0 NMEA 2000 NMEA 2000 Ed 3.101 GNSS performance standards IEC 61108-1 Ed 2.0. IEC 61108-02 Ed 1.0

GNSS Systems supported GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo) Channels 72 Internal/external antenna Internal or optional external antenna Time to first fix from cold start 26s

VHF TRANSCEIVER VDL access scheme CSTDMA Operating frequency 156.025MHz 162.025MHz Channel bandwidth 25kHz Receivers/transmitters 2 x receivers, 1 x transmitter AIS receiver sensitivity (20% PER) -111dBm AIS transmitter power 2W (+33dBm)

USER INTERFACE Indicators Power, transmit timeout, error, silent mode