Nauticast GmbH NAUTICASTA2 用户手册
Page 15 of 80
1001001-2EN A2 Product Manual 2_0
sentence in accordance with Table 6.
Priority
Position
COG/SOG
HDG
ROT
1 (Highest)
RMC
RMC
THS
ROT
2
GNS
VTG
HDT
-
3
GGA
VBW
OSD
-
4
GLL
OSD
-
-
Table 6 – Sentence priority
3.6.1 Output Drive Capacity for Serial Ports
Each serial port transmitter in the NAUTICAST A2 can have a maximum of 25 listeners consuming 2.0 mA
Each serial port transmitter in the NAUTICAST A2 can have a maximum of 25 listeners consuming 2.0 mA
each.
3.6.2 Input Load
3.6.2 Input Load
Input impedance for each listener input is 6.4 kΩ.
3.6.3 Schematics of a NAUTICAST A2 Serial Transceiver
Each of the RS422 serial interfaces on the NAUTICAST A2 fulfils the requirements of IEC 61162-2 and IEC
61993-2. A detailed schematic of one of the serial ports in the NAUTICAST A2 is shown below.
61993-2. A detailed schematic of one of the serial ports in the NAUTICAST A2 is shown below.
Figure 4 – Serial Port Schematics
ISO Power
Internal
Signals to AIS
To connected
equipment