Champ loses binding

[NJSwede]

...and while we're at it, here's another Champ issue:

I don't like the feeling of the "video game-like" tx that comes with the Champ, so I fly it with a DX5e. Great setup! However, a slightly annoying thing is that the Champ has to be rebound to the tx every time I change batteries. Really not a big deal, but I'm wondering if something is wrong with my setup or if the Champ is hardwired to go back to the "stock" binding when it loses power.

[SHADY]

As long as you turn on the Tx 1st, it should stay bound to your DX5.
If you plug in the plane batt. 1st it will go into bind mode, (flashing led).
Then you will need to rebind.

When my battery dies, I land, leave the Tx on and just switch to a fresh batt. without rebinding...

Hope that helps...

[NJSwede]

Hmmm... That might be the reason. The DX5e manual explicitly says it doesn't matter in what order you turn things on... Thanks!

[kyleservicetech]

Originally Posted by NJSwede

Hmmm... That might be the reason. The DX5e manual explicitly says it doesn't matter in what order you turn things on... Thanks!

H'mmm
That's strange, try it both ways, and post your results in wattflyer. (I've got a DX7 with AR7000 receivers, they don't care which is turned on first.)

[NJSwede]

Originally Posted by kyleservicetech

H'mmm
That's strange, try it both ways, and post your results in wattflyer. (I've got a DX7 with AR7000 receivers, they don't care which is turned on first.)

You asked and NJSwede provides:

Shady is 100% right. If the rx doesn't detect a signal on startup, it immediately goes into binding mode. If it has a signal, it just keeps on using it. So it's a little different from how the full size rxs work.

But now that I know how it works, I won't have to rebind all the time. Thanks Shady!

[SHADY]

Originally Posted by NJSwede

You asked and NJSwede provides:

Shady is 100% right. If the rx doesn't detect a signal on startup, it immediately goes into binding mode. If it has a signal, it just keeps on using it. So it's a little different from how the full size rxs work.

But now that I know how it works, I won't have to rebind all the time. Thanks Shady!

Glad I could help.....

[Turner]

The reason for the difference is the lack of bind plug on the ultra micro stuff. If the Rx is powered up first it looks for a Tx signal and if it doesn't find one it is unbound.

[NJSwede]

Stuart: That's what the manual says. Don't have it in front of me, so I can't give you the exact quote.

But I think I know why they can say that. DMS2 seems to be based on CDMA, which means that each transmitter has is own unique and very distinct fingerprint. Either the RX "hears" that fingerprint and reacts to the information that it carries, or it doesn't hear it and does nothing (probably goes back to failsafe mode is my guess). An FM receiver can't detect lack of signal as easily and will pick up all kinds of noise if there's no signal. Hence the twitching.

(Sorry, but you unleashed the radio geek in me... :-))