MOBILESINDIA: AIS Class B

Product Feature:
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.



Features



Simple Design Concept

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



Standard NMEA interface

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



Anti-Tamper

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 Transmit

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)



Water Resistance

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



Internal GPS Module

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�� Transmitter x 1

2�� Receiver x 2 (one time shared between AIS/DSC)

3�� Frequency : 156.025 to 162.025 MHz in 25KHz steps

4�� Output power:��33dBm �� 1.5 dB

5�� Channel Bandwidth: 25KHz

6�� Channel Step: 25KHz

7�� Modulation modes��

25KHz GMSK (AIS, TX and RX)

25KHz AFSK (DSC, RX only)

8��Bit rate��9600 b/s �� 50 ppm (GMSK)

1200 b/s �� 30 ppm (FSK)

9��RX Sensitivity��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�� IEC62287 FDIS

Draft IEC standard, Class B AIS

2�� IEC60945 Edn 4.0

IEC standard, environmental requirements

3�� ITU-RM.1371-1

Universal AIS Technical Characteristics

4�� IEC61162-1 Edn. 2.0

IEC standard, digital interfaces part 1

5�� IEC61108-1

IEC standard, GPS receiver equipment

6�� ITU RR AP18eWRC2000

Radio Regs., Appendix 18, Table of frequencies in the VHF maritime mobile band

7�� ITU R M.493-9

Digital Selective Calling system for use in the maritime mobile service

8�� ITU-R.M 825-3

Characteristics of a transponder system using DSC for use with VTS and ship-to-ship identification