Comar Systems CSB200 Installation And Instruction Manual page 13

CSB200 Class B AIS
Information Transmitted and Received
A Class A unit will transmit its IMO number (if known), MMSI, Call sign
and Name, length and beam, ship type, time, course over ground (COG),
speed over ground (SOG), heading, navigational status,
draught, cargo type, destination and safety related messages via a short
message service (SMS) facility. Message lengths are variable with static
and voyage related information being transmitted less often.
A Class B unit will transmit its MMSI, Call Sign and Name, length and
beam, ship type, time, course over ground (COG), speed over ground
(SOG) and heading.
Built in Test
The CSB200 is equipped with Built In Integrity Testing (BIIT). BIIT tests
run continuously or at appropriate intervals simultaneously with the
standard functions of the equipment. The BIIT detects any failure or
malfunction that will significantly reduce integrity or stop operation of the
CSB200 unit.
The tests include:

AIS TX malfunction (synthesiser not locked and TX time-out not
exceeded)

Antenna VSWR exceeds limit

Rx channel 1 malfunction (synthesiser not locked)

Rx channel 2 malfunction (synthesiser not locked)

Internal GNSS not in use

No valid SOG information

No valid COG information

Background noise > -77dBm

GPS failure

VSWR exceeding the maximum allowed level

The input voltage is out of the specified range
R4.0 13
rate of turn,