Owner's manual

38 39
(figure 46)*
(figure 47)
If your connection to the monitor is analog, you may also experience
additional blurring. For best results, use digital connections
throughout your entire video system.
BLURRING
ALTERNATING VERTICAL PIXELS
This pattern is a variation of the One
Pixel Checkerboard using only the
alternating vertical pixel component
(figure 46). The purpose is to single
out system timing and artifact
creation in the vertical dimension of
the image.
From a distance, the monitor
may appear to be flat grey with
individual horizontal lines visible on close observation as shown
in the inset. Proper display of this pattern is generally possible in
analog or digital systems that do not scale the image vertically.
If the display system is scaling the image, artifacts will appear in
this test pattern that represent the impairment of a full resolution
image. On the left (figure 47) is an
example of what these artifacts may look
like. They are created when the pixels of
the test pattern do not exactly overlay
the pixels of the display causing an “alias”
pattern to appear. Check your system for
opportunities to disable monitor overscan
or other resizing functions.
OBSERVATION
aDVaNCED sCaLING tEst 2
ARTIFACTS
Blurring in the vertical dimension is not expected unless your
system is scaling the video. It’s also possible that some video signal
processing to enhance vertical resolution may be at work in your
system. While this enhancement may be subjectively pleasing on
lesser quality video, such as up-scaled Standard Definition video, it
will actually degrade vertical resolution on high quality native High
Definition material. Disabling artificial enhancement on native HD
programs is recommended.
BLURRING
Zone Plates are multi-dimensional test signals that show the
interaction between video elements in a range of packing densities
and the electronic systems processing them. Two zone plates are
provided on this disc (figure 48).
This test signal is a compound frequency sweep in both the
horizontal and vertical directions. The resulting test pattern
will theoretically cross most of
the sensitive areas where signal
processing and display technologies
are likely to create artifacts. The
most common artifacts are called
“aliasing,” which refers to secondary
patterns not present in the original
signal. These secondary patterns
may come from scaling the image,
video filtering or some other
transformation affecting the original
HYPERBOLIC
ZONE PLATE
ZONE pLatEs
(figure 48)*
ADVANCED | DISPLAY EVALUATION TOOLS
MONITOR SELECTION
*Digital Reference Standard
*Digital Reference Standard