I have PAW Classic bought a week ago and running the latest software. I installed it into my MT-03 gyrocopter yesterday with the unit and aerials installed behind the instrument binnacle and within the GRP nose connected to the GPS mouse which sits on top of the binnacle and behind the windshield with a clear view of the sky; it was able to see 11 satellites within the hangar! My ATR833 radio aerial is also within the GRP nose enclosure and works fine so I assume that attenuation through GRP is minimal. The weather has been too poor to test fly, but on the ground it is seeing plenty of traffic so seems to be working OK.
My challenge is connecting it to my TRT800H transponder in order to achieve ADS-B out. The transponder was installed under a year ago and is hardware version 6.1 with software version 5.3. The Funke manual is a little unclear but I think my D-sub connector is the TRT800EMSS because the cables coming from the connector match the wiring diagramme under section 3.7.3.3 of the Funke manual. However, the connector itself has ‘EM800’ on the label with no reference to EMSS; I have asked Funke for clarification but have not heard back.
I purchased the recommended RS232 cable from Farnell as here
http://uk.farnell.com/ftdi/usb-rs232-we-1800-bt-0-0/cable-usb-a-rs232-serial-convertor/dp/1686450. I was then faced with the conundrum of which cable to attach to which; after much research I have crimped orange USB to light brown transponder, and black USB to bare transponder – see attached pictures. I was not entirely certain as to which of the two brown transponder cables to connect; I went with the less obviously brown one because it was contained within the grey cable sheath whereas the other clearly brown cable was outside of the sheath along with the red and blue power cables, so I took this to be the auto-on pin 14 connector and left it well alone. I made the connections via crimping, which I have not used before and may therefore be the source of my problem.
The RS232 USB cable was connected to the top left USB port of the PAW (with the Ethernet port immediately to the left) which I understand is Port 1, so I selected ‘Funke’ and 4,800 baud for this port on the PAW configuration page and saved. On the TRT800H set-up screens I enabled RS232 and selected ‘NMEA’; the baud rate appeared as 4,800 but position reported ‘No data’. I tried rebooting the PAW and recycling the TRT800H to no avail. Thinking that perhaps the top left port isn’t port 1 after all I then cycled through amending each port to Funke/4,800, but still the TRT800 showed ‘no data’ at the position field.
I was powering the PAW via the official lead from an Anker Power Core 20100, although inflight I intend to use an Anker dual USB cigarette socket adapter.
Can anybody spot an error in my setup? Might I have connected the wrong leads? Can I interrogate the PAW’s GPS output via data logging to check all is OK there? Might there be a fault in the RS232 cable? Or might I simply have a poor crimping connection?
Photos hopefully attached to show the various parts of the setup.
Many thanks.
Stuart