Interface cable for Airtronics to Reflex
 

Hi...
I have Reflex XTR and have been using my JR 9303 with it. I want to start using an Airtronics Vanguard with it to save the JR box as my kids are starting to fiddle with it. My problem is that I can't seem to find an interface cable to connect from the radio to the USB adapter. As you probably know, the connection to the USB connector is a RJ11(phone) connector. I can build a cable but I don't know the pin assignments etc.
If anyone knows where I can get a cable or the directions to build the cable please respond.
I've attached a couple pics of my radio showing the model and connector port.
Cheers,
Lyle

RE: Interface cable for Airtronics to Reflex
 

I have the EXACT same problem. I bought the Reflex software with the, "5-pin DIN round plug fits into all Sanwa/Airtronics RD radios." Unfortunately, the store I bought it from didn't know that the Reflex site goes on to say, "Earlier Vanguard/Infinity radios will not work with this connector." - http://www.reflex-sim.de/reflex-sim/...products_id=89

I figure (like you) that this can be resolved by figuring out the correct pin assignment, and have just started doing the research to figure out how. Malcolm from micro-heli.co.uk has given me a couple of good suggestions. He says,

"The simplest solution would to use one of the many windows based
oscilloscope programs to confirm the presence of a good PPM signal.
Winscope is one of the originals. Make up a test lead using some screened
cable and a 3.5mm jack plug and then probe pin 3 on the trainer port on the
back to see what signal you get. You then need to modify the 5 pin din so
that the signal wire is connected to pin 3 ( as shown
http://www.mftech.de/buchsen_en.htm )" "screened cable is where the centre conductor is then surrounded by a braded
screen. You connect the braid to ground and the centre connection to the
signal."

The website listed in his msg has a pin mapping for Sanwa/Airtronics listed in it, as well as a description of how to use the Winscope

Ok, so it seems like if we create a plug that matches the pin arrangement of the USB stick, we should be able to pass our signal from the transmitter to the software. Now we just need to find the mapping for the connector on the XTR side of the equation. According to this page: http://www.reflex-sim.de/reflex-sim/...th=15_35_45_51 there are only 2 pins used, GND and signal. Unfortunately, the diagram on this page also seems to match the disgram of the Airtronics TX plug.

Will need to hook up the scope and look for which pin on the TX actually carries the PPM signal.