Furuno FELCOM 250 Service Manual

    11.1 Communication unit: FB-2000 
11-5
4. ASK (Amplitude shift keying)
Communication (Simplex communication) between the Antenna unit and the
Communication unit is executed using ASK signals. The actual communication is executed
by the ATB Module of the Antenna unit and the MODEM board of the Communication
unit.
ASK signals transmit digital data by switching between ON/OFF for the 4 MHz carrier
signal.
The specifications for the ASK interface
x Communication speed : 38400 bps
x Data length : 8 bit
x Parity : Non
x Stop bit : 1 bit
x Flow control : N/A
x Frequency : 4 MHz

Furuno FELCOM 250 Specifications

General

Brand	Furuno
Model	FELCOM 250
Category	Marine GPS System
Language	English