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Appendix 5: Digital Interface
AP-73
Radar processor unit: output ports
TT for ECDIS
Baud rate for output sentences are set on the Radar Initialize menu. Complies with IEC 61162-1.
SN751178NS
Dual differrential
drivers and receivers
TD-A
TD-B
Logical High: A-B> +0.2V
Logical Low: A-B< -0.2V
=
=
LAN adapter: input ports
Log, wind, depth and navigation sensors
Baud rate is fixed at 4800 bps. Complies with IEC 61162-1.
HCPL061N
RD-A
RD-B
Photo Coupler
330k
AIS transponder
Baud rate is fixed at 38400 bps. Complies with IEC 61162-2.
HCPL061N
RD-A
RD-B
Photo Coupler
82k
Absolute maximum rating
Input
Forward current: 50mA
Reverse voltage: 3V