Advanced operation
Info messages
The following messages may appear automatically on the screen:
INPUT SELECTION
The Input selection menu appears in case 2 video signals are connected and the resolution of one or both video signals is too high to display them both.
In that case the input selection menu allows you to select one of both video signals.
NO SIGNAL SELECTED
This message appears in case the display finds no proper video signal at its inputs.
RESOLUTION TOO HIGH
This message appears in case the resolution of the selected video signal is too high to display.
TEXT MODE / DIAGNOSTIC MODE
These messages appear for a few seconds directly after switching to Text mode or Diagnostic mode.
In text mode, the display luminance is approximately half of the luminance in diagnostic mode. Text mode is intended for using the display with office applications such as word processing. You can switch between both modes by touching the up 
and down 
keys at the same time.