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Old Oct 07, 2013, 05:05 AM
Registered User
Germany, BY, N
Joined Oct 2013
12 Posts
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Spektrum DX9 display issue

Hello,

I got my Spektrum DX9 Radio.

When the contrast of the display is set very high and the backlight is reduced to lower values, just for testing, the screen flickers. Outside the room with bright daylight it is o.k.
Some guys say this is a normal effect.

Has anybody else this issue?

Thank you
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Old Oct 07, 2013, 06:53 AM
Registered User
Germany, BY, N
Joined Oct 2013
12 Posts
It seems to be "normal". I got feedback of four DX9 owners
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Old Oct 07, 2013, 09:43 AM
Registered User
Vienna, Austria
Joined Oct 2010
2,352 Posts
Normal. The scanning frequency if the LCD and the PWM frequency of the backlight are obviously close or causing interference. On the other hand, you do not see the text if you set the contrast to ridiculous levels

Since I am very sensitive to flickering I have the backlight always at 100%. I also hate the crappy LED braking lights on modern cars, the PWM is also way too low....
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Old Oct 07, 2013, 09:49 AM
Air, Ground & Water
freechip's Avatar
Canada, ON, Rockland
Joined Aug 2008
23,100 Posts
FYI - Two places you can adjust the contrast of the LCD screen.

In the Settings Menu and the other Raw Input Menu mentioned in the update Readme file.
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