Futab 9CAP trainer cable - Pin assignment

[lam_nicola]

Who has the idea about the new Futaba 9CAP TX trainer cable pin assignment ?
I am particular interested in the cable pin assignment of 9CAP to a 6-8ch TX.
9CAP side has a totally new square male plug while older style is round male plug. ???

[CoolbeaN]

Well, you could test the pins with a multimeter to try and find ground. Then if you don't have an oscilliscope you can download this one.

You have to make a probe with a hacked up audio cable (I used a microphone cable because it is mono) and plug it into the microphone port on your sound card.. Make sure to test with mutimeter first so you don't probe something over 15-20 volts and fry your sound card.
Just look for a wave that looks something like this.

If you find a similar wave make sure you have the correct one by moving the sticks.. The distance between peaks should get smaller as you move both stick to the bottom right and larger as you move both sticks to the top left (or vice versa)

Hope this helps.. if you find it be sure to post it up.

[lam_nicola]

Just borrow a 9CAP to 9CAP training cord. The measurment is in the picture.
Pin 6 and 3 are TX and RX, but which is which ? Either pin 5 or 2 is the earth, but which one and what the other does. Sorry I do not have the guts to find the pin with the primitive oscilliscope provided by Coolbean.
BTW, the blue line is not the earth !

[Mike Roberts]

Hi

I have the details. I will put them on my website as soon as I can.

Mike

[Mike Roberts]

Done! Have a look

Mike