xp9303 2.4ghz Binding Issue

[eman.302]

I've done some searches and read through the different posts about binding the XP9303 to the spektrum receivers. I'm having some issues.

I plug the bind plug into the battery jack on the receiver. Power is being provided by the electronic speed controller on the throttle channel.

I then plug the battery into the ESC, and get quick flashes from the receiver.

I then turn on the XP9303 2.4ghz while holding down the bind button.

After about 5 seconds the blinking stops on the receiver and the light goes completely off for about 3 seconds, then the light comes on blinking again, but at a slower pace.

I'm at a loss, this is a new radio on an older helicopter that has flown before with the receiver installed. Thanks for the help.

[zeb29]

Well the slow blinking indicates a power supply issue to the rx, either it got too low or was temporarily disrupted at some point.

I find it's a hassle to monkey with the ESC power for binding and other issues with electric powered stuff so I just use a Spektrum 3 wire switch assembly with a NiMH battery to do setups and binding. Since there is nothing which needs to go into the Batt/Bind slot on the rx of an electric powered model, I just leave a short extension in that slot and then connect the switch there.

You might want to try powering the rx with another battery to do the bind? Kind of a hassle I know, but it'll eliminate some questions if it works where your ESC connection seems to be causing a power brownout on the rx during the bind.

[BarracudaHockey]

I wouldnt even mess with a switch.

Plug the bind plug in to the batt/bind port
Plug a 4 or 5 cell battery directly into a servo port.
Bind

[zeb29]

I wouldnt even mess with a switch.

Plug the bind plug in to the batt/bind port
Plug a 4 or 5 cell battery directly into a servo port.
Bind

Well not a bad idea unless....

The rx is buried or hard to get to in order to monkey around with the servo leads i.e. the AR-6100E in my little T-Rex 450. All the other ports are used and the Batt/Bind port is right next to the frame (it's mounted in a similar fashion to the Blade 400) so with that and all the other servo wires coming out of it, it's just a real pain to get to....:arggg:

So I've got a short extension doubled over and tie wrapped and it just stays plugged into that battery slot. Then the Spektrum switch has a battery input as well as a place to put the bind plug and you can just turn it off/on with a flick. Or you can disconnect the thing to do linkage adjustments or such and it's real easy to plug it back in when you need the electrical/radio system again.

Granted, if I didn't already have the small switch like comes with the radios I probably would not have gone out and bought one since Spektrum is the only place I found to get a three wire switch (for the OP it MUST be a three wire switch) in the smaller size normally used for glow stuff.

[Sonic_BOOMER_SOONER]

+1 zeb. I have a TRex600NP and I'm running the AR7100R with the Rev-Limiter, three antennas and a Flight Logger. It's an elegant setup but the receiver bus is a busy place! I run a Y plug from Data/Bind port and then plug the Flight Logger into one of the Y's and leave other one easily accessible away from all the zip tied wiring around the receiver. Binding is now pretty much a non event. :)

I'm using the DX7se, but I think this will help you as well.

[eman.302]

No luck guys. I have now removed the receiver from the helicopter (T-Rex250) and have attempted to bind. I have the bind plug inserted into the battery port, and I then connect a battery directly to the RX in a different servo port, the RX rapidly blinks and then I turn on the TX while holding down the bind button. Nothing happens. I'm starting to wonder if it's a bad TX, it's a used JR XP9303, looks mint. I know the RX worked, because I had a Spektrum 6 channel TX linked to it. I'm at a loss. Thanks for the replies so far.

[Pinecone]

First, I hope you really have an X9303, NOT an XP9303. XP is 72 MHz, X is 2.4 GHz.

It could be either the Tx or the Rx. Do you have any other Rxes to test? If it binds to another Rx, then it is an Rx problem. If the same thing happens to multiple Rxes, then it is likely a Tx problem.

Best thing, pack it up and send to Horizon. They are very good about repairing and not charging

[lefty346]

I have a X9303 bought about 2 months ago had a binding issue with my t450. Something went wrong I can't bind anymore. I have a DX6I and it binds with no problem to the 450, so its not the RX its the TX. Called Horizon and they told me to send it in. Been gone for 2 weeks still waiting.

[eman.302]

Thanks Guys. I have an XP9303 with the 2.4ghz module. I must be brain dead, though I've figured out my issue. On the system menu I needed to select the PPM modulation and not the SPCM. Sorry for wasting everyones time, but now I've got it working. Thanks for all of the help. Ya know it's always something simple. The instruction manual didn't have any information, because it was the XP, adn the module was bought as an add-on.