8.6. RJ45 connector ttyS7 and ttyS9
Both serial interfaces are similar with standard IGC assignment for the
serial port. This interfaces implement the IGC Standard on the PC site,
so devices like a FLARM can be connected to there.
Any device with an IGC compatible port e.g. a FLARM or a Logger,
can be connected with a standard 1:1 LAN cable to here.
Also any other serial device supported by the navi application e.g.
XCSoar, like a radio device can be connected to the serial interface,
pins RX/TX and GND with a custom cable in case the connected device
does not have a standard IGC RJ45 plug.
This interfaces provide as well 12V power on Pin 8, in case this is not wished there are several options:
1. Cut a PCB wire on the bottom of the I/O board, see right
side. Power on ttyS9 is cut per default. If no power is
needed on ttyS7 or ttyS9, the PCB can be modified by cuts
as shown on the right side here:
2. Use a Y-Piece as offered in the shop with power jumpers
pulled
3. Use a 8P4C wire with only Pin 1..4 connected (custom
made), a cable like this will be available around Q2/23
4. Use a 6P6C wire (RJ12) centered in the RJ45 ports (amazon provides corresponding cables with RJ12
ends)
Interface ttyS7 and ttyS9
Pin #
RJ45
FCC
identifier
direction
Connection
Logger/Radio/GPS
1
GND
GND
2
GND
GND
3
RS232 TTL TX
Serial RX
4
RS232 TTL RX
Serial TX
5
NC
6
NC
7
NC
8
+8..28 V
electrical 12VDC
Page 13
Abbildung 2: ttyS7,9 Pinout
