STANDARD PERFORMANCE
B923 CLASS B┃2W/CS
Get the most from your on-the-water experience with the B923, a 2W CSTDMA AIS Class B transceiver. Small and light-weight, it delivers em-trak’s advanced AIS performance to ensure you see all information and targets, even at maximum range, and with the lowest power consumption in its class.
The B923 is equipped with an integrated VHF antenna splitter, which enables your transceiver to share your existing VHF antenna without any loss of performance. It offers quick and simple installation, with built-in intelligent connectivity, including integrated next-generation GPS receiver and antenna and em-trak’s unique FLEXI-FIT® bracket system to get you up and running in no time at all. The dual NMEA2000 & 0183, coupled with serial ports and USB also make connecting to all your PC’s, display and navigation devices easy and simple.
- Certified AIS Class B – 2W CSTDMA
- Integrated high performance zero loss VHF antenna splitter
- Global Certification – USCG / FCC / Canada / Europe
- SRT-AIS™ transceiver engine for superlative proven performance
- FLEXI-FIX™ bracket system for easy, convenient and secure installation
- Internal high-performance GPS receiver and 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
- Guaranteed connectivity and interoperability with any app, chart plotter, smart phone, tablet or PC
- 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 – 415g
Operating temperature – -25°C to +55°C
Storage temperature – -25°C to +70°C
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) – 245mA
Peak current – 2A
Average power consumption (at 12V) – 2.9W
Galvanic isolation – NMEA 0183 inputs only, NMEA 2000, VHF antenna port
CONNECTORS
VHF antenna – SO-239
VHF radio – 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 – NMEA2000 Ed 3.101, LEN=1
USB – PC virtual com port for NMEA0183 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
- 1 x AIS Transceiver
- 1 x Power and Data Cable (2m)
- 1 x VHF Radio Accessory Cable (1m)
- 1 x FLEXI-FIT Mounting Bracket – Complete with Screws & Optional Fixing Tape
