User`s guide

DVDO iScan Mini - 4K Scaler / Video Enhancement
DVDO iScan Mini 27
Test Pattern Explanations
Frame & Geometry
This test pattern contains two specific test features. The first is a 1-pixel wide box around the very outside
of the image. This is used to determine when the entire iScan output image is visible on the display. The
arrows along the middle of each edge provide an indication of the amount of overscan (if any). The blue
boxes in the center of each quadrant are used for measuring display geometry. The rectangle in the
center of the gray boxes should appear square on a 4:3 aspect ratio display, the next large rectangle
should appear square on a 16:9 display, the next on a 1.85:1 display, and the largest rectangle should be
square on a 2.35:1 display. The blue boxes are also used as an indication that the horizontal positioning
of the output image is correct. This is particularly useful to align a video projector and also to visually
verify that a TV is not in overscan mode. If the blue boxes are displayed as red instead of blue, then the
Cb & Cr components are reversed. This can be corrected by ensuring that there is an even number of
pixels in the sum of the horizontal sync and horizontal back porch.
Frame/Geometry Test Pattern Displayed Correctly (Image B)
When this test pattern is displayed correctly, it should look like this, with a one-pixel wide white border
around the edge of the screen: