Ensemble Designs 5400 Dual Sync Generator and Test Signal Generator with HD Tri-Level Sync User Manual
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Miscellaneous Test Patterns
The following test patterns have special purposes.
Crosshatch
The crosshatch test pattern consists of horizontal and vertical lines organized in a
grid. This test pattern is used to evaluate monitor linearity and distortion.
SafeTitle
The safetitle test pattern identifies safe area in a video monitor for titles. If the
title stays inside the safe area, then monitors will always show the complete title
uncropped. The safe title pattern also shows the center of the visible area.
Unit Circle
When viewed on a component vectorscope, the unit circle test pattern displays a
circle of constant radius. This test pattern is useful for evaluating systems that
manipulate chroma such as chroma keyers.
Multi pattern
The multi pattern test pattern contains horizontal strips of other test signals,
including bars, reverse bars, pluge, video ramp, shallow ramp, sweep, markers for
sweep, multiburst, window, interlace, unit circle, and pathological patterns.
Viewed on a monitor, problems in a video system can often be discovered because
of the wide variety of signals present.
This single pattern can be used in conjunction with a waveform monitor that is
equipped with a line selector to display each of these patterns by selecting the line
to be viewed.
Multi composite
This test pattern is the same as the multi pattern above except the composite
version has the chroma channels of the ramp at reduced amplitude so that they do
not create illegal waveforms in composite.
Pathological
The pathological test pattern consists of a flat field of magenta color that is
precisely chosen because it produces long sequences of ones and zeroes in serial
digital systems. Because some systems are not tolerant of long sequences, this
pattern can help to identify those systems.
When a pathological error occurs, this test pattern shows horizontal, intermittent
black lines.
16 by 9
This pattern is intended for use in standard definition systems that are producing
anamorphic material for 16:9 HD viewing. This pattern provides safetitle marking
for both SD and HD aspect ratios. It also includes a color bar pattern which is hor-
izontally compressed such that when displayed on a 16:9 monitor, the color bar
portion will have a 4:3 aspect ratio.
Model 5400 Dual Sync Gen/Test Signal Generator
5400-A7