Old Futaba tx pinout?
Found this pinout for the Futaba FP-TP tx module that's in the 3PJ, 7U, 8U, 9C & 9Z:
looking at the back of the transmitter, antenna pointing away from you:
#2 switched battery positive
#3 RF good (pulled low through a transister when signal is present at the final amp)
#5 RF out
I knew my old 3EGX modules were 10 pin but when I opened one to have a look the pins are tied together so the result is only 5 inputs to the module:
So using the same orientation as previous, pins 1/2, 3/4, 5/6/7, 8/9, 10 feed the tx. Any idea whats what? Any way to find out?
Guess you figured where this is going. Here's the FASST unit that replaces that FP-TP module:
The pin 10 modules we have here don't match this pin out.
1, 3, 5 are PPM, +B, and GND with the other pins not tied together.
So just to be sure, looking at the module in the center of the picture from the left:
1&2 = PPM
3&4 = +9.6v
5/6/7 = GRD
8&9 = ?
10 = ?
Or have I completely misunderstood and you're quoting YOUR pinout?
I would do nothing until putting an oscope, and meter on the tx and seeing what is what.
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