Help with a 12FG

[Boblister]

I have upgraded from a 6EXHP to a 12FG 2.4GHz today. The Phoenix worked fine on the 6EXHP, but I cant seem to get it working on the 12FG.
After a lot of reading/searching I am sure I have everything set correctly.
I have it set to STUDENT in the trainer setting screen. It's also set to 8 channel PPM and set to ON. When I plug into the 12FG with it turned off it powers up into student mode. Bottom right says Trainer/student. But Phoenix still says please reconnect or switch on your transmitter. Plug into the 6EXHP and it's fine. I don't know if anyone has any ideas because I am totally stumped.

I did see a posting somewhere mentioning that the logic out of the 12FG as 3.3v as against 5v on other systems. So not sure if this has a bearing on things. I have had the Phoenix for quite a while. I don't know if they had updated the little black interface box at any time.

Rob

[sooren]

I would like to know the answer to this as well as i am struggling to get my 12FG to work on the pheonix.

regards
Paul

[t-rex pedro]

Me too!

[Boblister]

Is yours being recognised by the Phoenix or does it think its turned off/not connected?

[Andy from Sandy]

I found this thread. The very last line suggests you still have to turn the tx on.

http://www.rcheliaddict.co.uk/phoeni...g-phoenix.html

[sooren]

Is yours being recognised by the Phoenix or does it think its turned off/not connected?

It thinks its turned of/not connected.

Regards
Paul

[Boblister]

I am starting to suspect it's a problem with the little black interface box. As I had posted it works perfect with the 6EXHP. But I found a mention in a thread with the quote below. At the moment it's the only thing thats making any sense. If the interface is expecting levels of 5v and only getting 3.3 then it could be the problem.
Anyone know where Phoenix live? Is it UK or US?

As viewed from the outside of the radio…

O1 o2 o3
O4 o5 o6

1=cppm out
2=gnd
3
4=cppm input
5= battery input (+)
6= battery output (+)

Just a little note... The FF0 and i think the 14Mz are using 5v logic the 12FG uses 3.3v logic so watch pluging traiberleads across between diferent types they need resistive attenuators in for a 12fg....

Steve

[Disc]

set a new Model up on the Tranny:

12FG set to Trainer MODE for this new Model

it will then work with the Sim

I had to have my tranny on but it was a old version of the Sim and so was the cable etc etc

[Boblister]

Sir, your an absolute star!!!!
Thats done it. I dont know why though. I set the default model 1 to student etc and that doesnt work. As far as I can tell I have created another model exactly the same and set the trainer options which seem to be a global setting and it works.

Thank's a lot. But I wish I understood why it doesn't work on the first model.

[xygax]

Phoenix works with JR and that signal is +/- 2.5v so it should work with a 12FG... Pop the back off and make sure that pin 5 and 6 are linked it turns the Tx on without the RF being energised...

Steve

[Disc]

Sir, your an absolute star!!!!
Thats done it. I dont know why though. I set the default model 1 to student etc and that doesnt work. As far as I can tell I have created another model exactly the same and set the trainer options which seem to be a global setting and it works.

Thank's a lot. But I wish I understood why it doesn't work on the first model.

The main issue is the 12FG needs to send its instructions in PPM mode to the Sim and the only way it does it is by setting it to trainer mode. When in 2.4ghz mode it does not do this.

Also a note is the 12FG needs a different trainer lead to even connect it to other Futaba sets the normal training lead won't work, just in case you ever try it...

[Stuart]

If its anything like my 14MZ make sure your in PPM and not 2.4ghz. Cancel the frequency warning message and let it boot up.

[Disc]

If its anything like my 14MZ make sure your in PPM and not 2.4ghz. Cancel the frequency warning message and let it boot up.

ah it might be close but you need to set up a new Model in Trainer mode on the 12FG from the outset of setting up the model to use with the sim, otherwise it won't like it...

[SadSack]

or you could just sack the lead all together!! and if you wanted wireless buddy lead possible too

http://www.rcheliaddict.co.uk/phoeni...-spektrum.html

[Boblister]

Thank's to everyone for the very helpful support and suggestions. Disc's reply seems to be the one thats worked. I still don't really know why. This transmitter was new today and came with a default Model 1 set for aeroplane. This is the one I have been struggling with all day. I know I tried every variation of trainer mode PPM etc. and it would not have it. When Disc suggested I make create another model setting and set that to trainer etc. it worked. But the strange thing is, so did model one after that. Since then I have deleted the new model and model 1 is still happily working. Still, it's working now. One possible answer. It wont let you accidentally go into student mode on the default model when you first fire up a new transmitter. Thats just a wild guess.

I did get a reply from Phoenix support. They were very helpful. Initially making similar suggestions to here. The settings in Trainer etc. He did confirm that the voltage input is not critical as it feeds into an op amp. He also sent me an .exe file to test the raw output from the USB dongle thingy, just to see if its working. Of course it was by then.

Now to go get used to all the rest of the bells and whistles on this 12FG