P TG 5610 B/D Reference Manual. Rev 1.0
Page 33 of 53
Most LCD panels will exhibit some smearing with motion; it is the fundamental nature of
LCD panel technology. Try different background and foreground levels and velocity
settings to highlight the problem.
This pattern provides a means to visually quantify the degree of smearing present when
comparing and evaluating different displays. Some newer high end display panels
(designed for broadcast and post production) which employ active [pulsed] backlights will
tend to perform best.
This test functions best if used in a progressive display format on LCD panels
White Flash and Black Flash Patterns
Two patterns are provided for the purpose of video delay testing and measurements.
These are “White flash” and Black Flash”
The White Flash pattern is 7 frames of black and 1 frame of white
The Black Flash pattern is 7 frames of white and 1 frame of black
Typical application is shown below. Measurement is taken on an Oscilloscope comparing
the device under test to the input signal. The latent video delay is measured on the
oscilloscope.
Note. The application below shows using both outputs of the P TG 5610 with
outputs set to output the same pattern; (in this case it’s the white flash signal). If
a SDI distribution amplifier is available then a single P TG 5610 output can be
used.
Typical application showing measurement of video delay through a device using the
“white flash” pattern on both P TG 5610 outputs.
Color Temperature Test
This pattern consists of a window (25% display area) centered on a black background.
This type of pattern is typically used to calibrate color displays with a color temperature
probe (not supplied)
The Y level of the window is user adjustable in the
pattern settings menu and can be set anywhere from 0-
100% in level) Default is 100%
D/A
Converter
Device Under
Test
Oscilloscope
SDI in
SDI out
e.g LYNX C DA 3002
Out 1
Out 2
D/A
Converter
100% Y Window
Pluge
