5.3 Communication Specifications
5.3.1 Ethernet Variant
Interfaces Ethernet
Speed 10/100 Mbps
Protocols NMEA 0183
Advanced Navigation Packet Protocol
TSS1
Simrad
Ports Up to 4 TCP or UDP ports
Timing PTPServer
NTP Server
Timing Accuracy 50 ns (PTP)
1 ms (NTP)
Table 12: Ethernet Communication Specifications
5.3.2 Serial Variant
Interfaces RS422 or RS232
CAN
Speed 2400 to 1 M baud
Protocols NMEA 0183
NMEA 2000
Advanced Navigation Packet Protocol
TSS1
Simrad
Timing 1PPSOutput
Timing Accuracy 20 ns
Additional Interfaces Auxiliary RS422/RS232
1PPS Output
Alarm Output
Table 13: Serial Communication Specifications
5.4 Electrical Specifications
Parameter Minimum Typical Maximum
RS232
Tx Voltage Low -5.4 V -5 V
Tx Voltage High 5 V 5.4 V
Tx Short Circuit Current ±60 mA
Rx Threshold Low 0.6 V 1.2 V
v2.0 Page 17 04 Nov 2021
GNSS Compass Reference Manual • Specifications