Class B Automatic Identification System (AIS) Unit - Tianjin 712 Communication & Broadcasting Co., Ltd

The TCB AIS Class B receiver and transmitter unit is the culmination of six years AIS development, and the application of some of the most advanced wireless digital development skills and techniques. The result is a small, low cost, reliable, robust and high performance product suitable for a variety of applications within the AIS environment.

TCB's AIS Class B is an elegant single PCB solution optimising the combined application of hardware and software

As standard the TCB Class B can be connected to any NMEA compatible GPS plotter or suitably configured PC or PDA

TCB's Class B is enabled to alert users and/or authorities if the unit has been either removed or tampered with once installed (configurable option additional to the Class B specification

Distress alert button enables the user to transmit a distress alert with the GPS position of the vessel (configurableoption additional to the Class B specification)

Robust, coated aluminium case, to ensure the unit is able to operate in the harshest of environments. IEC60945 - Cat C.

TCB's Class B includes an integral GPS module to facilitate ease of installation and use.

Physical	Dimensions: 190 x 135 x 83 mm (L x W x H) Weight: 1450g
Power	12V DC (9.6-15.6V) Average power consumption 6W Power Consumption 0.5A continuous
GPS Receiver (AIS Internal)	IEC 61108-1 compliant RTCM corrections
Electrical Interfaces	RS232 38.4kbaud bi-directional RS422 NMEA 38.4kbaud bi-directional
Connectors	VHF Antenna connector GPS Antenna connector RS232/RS422/Power
Environmental	IEC 60945 Operating Temperature: -25ºC to +55ºC
VHF Transceiver	1??span style="font-family: 'Times New Roman';"> Transmitter x 1 2??span style="font-family: 'Times New Roman';"> Receiver x 2 (one time shared between AIS/DSC) 3??span style="font-family: 'Times New Roman';"> Frequency : 156.025 to 162.025 MHz in 25KHz steps 4??span style="font-family: 'Times New Roman';"> Output power:??/span>33dBm ± 1.5 dB 5??span style="font-family: 'Times New Roman';"> Channel Bandwidth: 25KHz 6??span style="font-family: 'Times New Roman';"> Channel Step: 25KHz 7??span style="font-family: 'Times New Roman';"> Modulation modes??/span> 25KHz GMSK (AIS, TX and RX) 25KHz AFSK (DSC, RX only) 8??/span>Bit rate??/span>9600 b/s ± 50 ppm (GMSK) 1200 b/s ± 30 ppm (FSK) 9??/span>RX Sensitivity??/span>Sensitivity - 107dBm 25KHz Message Error Rate 20% Co-Channel 10dB Adjacent Channel 70dB IMD 65dB Blocking 84dB
Designed to be compliant with the following standards	1??span style="font-family: 'Times New Roman';"> IEC62287 FDIS Draft IEC standard, Class B AIS 2??span style="font-family: 'Times New Roman';"> IEC60945 Edn 4.0 IEC standard, environmental requirements 3??span style="font-family: 'Times New Roman';"> ITU-RM.1371-1 Universal AIS Technical Characteristics 4??span style="font-family: 'Times New Roman';"> IEC61162-1 Edn. 2.0 IEC standard, digital interfaces part 1 5??span style="font-family: 'Times New Roman';"> IEC61108-1 IEC standard, GPS receiver equipment 6??span style="font-family: 'Times New Roman';"> ITU RR AP18eWRC2000 Radio Regs., Appendix 18, Table of frequencies in the VHF maritime mobile band 7??span style="font-family: 'Times New Roman';"> ITU R M.493-9 Digital Selective Calling system for use in the maritime mobile service 8??span style="font-family: 'Times New Roman';"> ITU-R.M 825-3 Characteristics of a transponder system using DSC for use with VTS and ship-to-ship identification