Ask Proxima E3000 series User Manual page 44

Setting
Ceiling
This function is used to project the image from a ceilingmounted projector.
On.......The picture will be top/bottom and left/right reversed.
Auto.... The projector automatically identifies its vertical or inverse state.
Off ......Disable this function.
Test Pattern
This function is used to set the internal test signal.
Third party lens support
When you change the project lens to third party lens, please set this item "On", otherwise, image
can not be projected properly.
On........Third-party lens can be used.
Off........Third-party lens can not be used.
SHUTTER
This function is used to open or close the shutter.
On........Open the shutter.
Off........Close the shutter.
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