Setting up the Futaba 611 for the Spektrum DX7

[fredmillard]

Greetings folks,

I currently have my 611 set manually for heading hold, as such I do not have the gear leads plugged into the AR7000 receiver. However, I now wish to be able to change the gyro's gain via transmitter settings, meaning in switch position 0 I may wish to have a gain sensitivity of X while on switch position 1 perhaps something different that X.

As well, is it possible to have Pos 1 to be heading hold while Pos 0 is normal mode?

The problem I have when attempting to do so is that the tail servo starts doing weird things. A little direction could sure help me if someone is inclined to provide it.

Thanks much

Fred

[capebob]

First of all you must define "weird". If this is your first heading hold gyro you may think that your servo is doing weird things when in heading hold when it is actually working properly. For instance, when in heading hold and you move your servo one way or the other it will not center itself when you release the rudder stick. If you understand how a heading hold gyro works while in heading hold then forget what I just said. :)

The best way to set up the DX-7 with a gyro IMHO is to disable the the Gyro Sense feature and use channel 5 and the gear switch to control your gyro. This will allow use of your throttle hold and flight mode switches without changing your gyro mode.

Bob

[fredmillard]

Bob,

You are correct I should be more explicit. With that said, what I mean by weird, is that the heading hold is not working, as well full stick movement does not produce full movement of the servo. Now, if I go into the limit adjustment and alter it one point or more, the stick movement begins to work again until i reboot the gyro resulting in the same issue. However, if I leave the gear leads disconnected, set the gyro to AVCS, everything works perfectly but I have no control from the TX.

As such, i need to figure what the heck I am doing wrong, which leads me to the issue of whether I have the polarity connected properly on the gear leads. I am going to check that right now. FM

[fredmillard]

Okay, the weird stuff is gone, I must have had the polarity of the gear leads installed incorrectly. However, I wish to know the following:

If I set the gyro to CMT, does that mean I can operate it in both AVC and Normal modes?
In the 611's menu there is a page that reads "ACGA***%" What is that for and why can I not get it's value to change?

AVS is set for 100% is that correct?

Finally G:1A is set at 35%, I believe that is the gain. If so, when I change it from the TX, should its value change on the Gyro's menu?

thanks

Fred

[TMoore]

You're making this way harder than it has to be. All you have to do is to set the DX to AUX>AUX or GEAR>GEAR and then use either channel for the gain on the 611. Once you have this set, adjust the endpoints of the T/R servo on the 611 box per the instructions and then set whatever channel you have the gain lead plugged into while you read the gains on the 611 control box. "A" is for AVCS and "N" is for normal or rate mode. Other than the endpoints and the gyro gain there is nothing more that you really have to do to make the 611 work.

TM

[fredmillard]

Thanks so much Fred

[fredmillard]

TM thans again.. How easy, shy didn't I think of that? Now if I wish to alter the gain via the transmitter is it possible to do so as I can on my 401's? And if so, is the tx setup different? Thanks Fred

[fredmillard]

Is it possible to control the 611's sensitivity on the fly from the DX7? I can switch between two settings by toggling in my case the gear switch but changing the Tx's gyro sensitivity levels or the endpoints (in my case the gear channel) do nothing? Does that make sense? thanks again Fred

[TMoore]

If the gear channel endpoints are different just look at the GY display and toggle the gear switch. When you do this, you will see the gain values change on the GY display. A is for AVCS mode and N is for Normal mode. You may even have two A rates if you want by just altering the gear channel endpoints in the radio or by using the Flight mode switch to change the gyro gain settings (not my preferred method).

TM

[fredmillard]

Thanks for responding. Here is what's happening, regardless of the values I set for the respective endpoints, the two values on the 611 screen remain the same. If I have it set to AVS, then I can toggle between two AVS values, and if I have it set to CMT, then I can toggle between normal and AVS modes, and so on. But regardless of where I set the endpoints the values remain the same on the 611 menu screen. For example if I set one value to 67% and the other to 50%, changing the endpoints on the gear channel do nothing. It seems that the only way I can actually change the respective values is by manually doing so via the 611 menu, not the DX7. I believe I should be able to change the values of the two modes from the DX7, but cannot figure out how to get the 611 to recognize the endpoint value changes. thanks Fred

[fredmillard]

Since my last posting, I discovered something: When viewing the initial screen of the 611 menu, (e.g. G99A5.0V) to the left side of the voltage reading, there is a gain level (sensitivity) displayed . viewing page while I change the DX7's gyro sensitivity levels, it also changes in value. Can someone tell me if those values are the actual sensitivity levels of the gyro and if so, why are they different than those on a subsequent page of the 611's menu, which are designated as being the "Gyro Gain Adjustment?"

I hope this makes sense; I'm tired and it is late. Fred