I am posting to see how others addressed dimming Garmin components such as the GTN6XX, GMA245, and the GTR200. The rest of my avionics are from Dynon.
The Garmin components all have reference voltage inputs to externally control the brightness of the screen, button text, etc. They also have an internal photocell if the external source is not utilized.
To further complicate things, Dynon has a "Dim OUT" pin on the HDXs. This is a variable voltage output reference that can control the brightness of other components that have a "light in" such as the Garmin products. Dynon did state that there is a possibility of noise on the audio panel if the grounds are not referenced correctly.
How have others addressed this, and how are your results?
The Garmin components all have reference voltage inputs to externally control the brightness of the screen, button text, etc. They also have an internal photocell if the external source is not utilized.
To further complicate things, Dynon has a "Dim OUT" pin on the HDXs. This is a variable voltage output reference that can control the brightness of other components that have a "light in" such as the Garmin products. Dynon did state that there is a possibility of noise on the audio panel if the grounds are not referenced correctly.
How have others addressed this, and how are your results?
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