Installation
20221586B 75
3.20 Single NMEA input/output
RX1
RX1+
MAIN PCB
NMEA
Input 1
Vbat+
Sys. sel.
Gnd
TX1
TX1+
NMEA
Output1
AUTOPILOT COMPUTER
TB13
TB14
Note
NAV RECEIVER
OR PLOTTER
(NMEA talker)
NMEA listener
IS15 RUDDER
IS15 COMPASS
RADAR
Figure 3-22 Single NMEA connection
Caution ! If an IS15 Instrument is powered from TB14 Vbat+ and Gnd,
please observe that Vbat output voltage will follow mains
supply voltage (IS15 Compass = 12V only!).
3.21 Double NMEA input/output
RX1
RX1+
MAIN PCB
NMEA
Input 1
Vbat+
Sys. sel.
Gnd
TX1
TX1+
NMEA
Output1
POWER PCB
TB8
TB9
TB10
RX2
RX2+
NMEA
Input2
TX2
TX2+
NMEA
Output2
GPS or
CHARTPLOTTER
AC20/AC40 AUTOPILOT COMPUTER
TB13 TB14
GPS or
CHARTPLOTTER
Figure 3-23 Double NMEA connection
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