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Aug 17, 2017, 07:19 PM
Registered User

Use Knob disabled in Vector Configuration

Having switched to a Spektrum DX9 transmitter (specifically to use the knob for gain control) I am unable to select any of the "Use Knob" selections for any of the gain settings in the Vector Configuration tool. The knob is configured and operational in the RC Configuration page and I am able to rotate it on the transmitter and see the change on the Gain Knob graphic display. I am also able to see the Gain Knob values change in the OSD. But for some reason I am unable to select any of the "Use Knob?" selections to actually use it.

I am using a Micro Vector v12.60 with firmware v2.65 connected to a Spektrum SPM4648 Serial Receiver. The Micro Vector is configured for Elevon Fixed Wing and I have run the Rx Analysis Wizard several times trying different changes of the knob during the analysis with no changes in the selections for the "Use Knob?". They are all simply disabled and greyed out at all times.

So, what am I doing wrong and what did I miss in the documentation that is causing this condition?

Knob Challenged
Last edited by Van5876; Aug 17, 2017 at 07:38 PM.
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Aug 18, 2017, 10:22 AM
JohnET's Avatar

For fixed wing the gain knob controls all 3 axis at once. You can not assign the knob to individual axis for a fixed wing.

Regards, John
Aug 18, 2017, 11:34 AM
Registered User
Hi John, thank you for your reply. Upon further reading I started to get that idea but was thrown off by the fact that the settings all said 'No' for "Use Knob?" selections even though they were disabled from being selected.
May 09, 2018, 09:05 AM
Registered User
Originally Posted by JohnET

For fixed wing the gain knob controls all 3 axis at once. You can not assign the knob to individual axis for a fixed wing.

Regards, John
I have a similar issue with a full sized ET Vector (FW 2.70, SW 12.67) and a conventional fixed wing aircraft.

The gain knob and all other channels are mapped correctly from the Rx's serial ppm output and the gain knob graphic in the RC Configuration Tab of the Vector Configuration App (Win 10) turns with the Tx knob. However, the numerical gains displayed on the Flight Controller Setup Tab don't change when the knob is turned - is that correct behavior?

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