20 single nmea input/output, 21 double nmea input/output, Ac20/ac40 autopilot computer – Simrad AP25 User Manual
Page 91: Autopilot computer, Installation, Figure 3-22 single nmea connection, Figure 3-23 double nmea connection, Caution
Installation
20221495F
89
3.20 Single NMEA input/output
RX
1
RX
1+
MAIN PCB
NMEA
Input 1
Vba
t+
Sy
s.
s
el.
Gn
d
TX
1
TX
1+
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 can only operate on 12V.
3.21 Double NMEA input/output
RX1
RX
1+
MAIN PCB
NMEA
Input 1
Vb
at+
Sy
s. s
e
l.
Gn
d
TX1
TX
1+
NMEA
Output1
POWER PCB
TB8
TB9
TB10
RX
2
RX
2+
NMEA
Input2
TX2
TX
2+
NMEA
Output2
GPS or
CHARTPLOTTER
AC20/AC40 AUTOPILOT COMPUTER
TB13
TB14
GPS or
CHARTPLOTTER
Figure 3-23 Double NMEA connection