Ensemble Designs 5400 Dual Sync Generator and Test Signal Generator with HD Tri-Level Sync - Manual (Page 36)

Miscellaneous
Black
CrossHatch
SafeTitle (Rotary Switch Setting 8)
Unit Circle
Multi pattern (Rotary Switch Setting 9)
Multi composite
Pathological (Rotary Switch Setting 7)
16 by 9
A.2 TEST PATTERN DESCRIPTIONS
Color Bars
All of the color bar patterns include peak white, black, and the six vector colors (yellow,
cyan, green, magenta, red, and blue), either at 75% or 100%.
Full Field Bars
Full field bars is sometimes called simple bars as it does not include anything else.
It is color bars from the top of the field to the bottom.
100% is usually used for component signals as the amplitude of the Cb and Cr
signals is the same as the Y signal. A waveform monitor can be used to align Y, Cb,
and Cr gain.
75% is more commonly used with composite--when viewed on a waveform monitor,
the chroma yellow and cyan envelope is lined up with the peak white level. As
such, a waveform monitor can be used to align luminance and chrominance gain,
and a vector display can be used to align chroma phase.
Split Field w/Pluge
Pluge, or level reference is added to the color bars to make a split field. The pluge
is used to adjust monitor brightness and to check for clipping in digital systems.
The pluge includes +/- 2 IRE levels around black, four luminance steps, and a 5
IRE "top hat" above peak white.
In composite systems, monitor brightness can be adjusted using the +/- 2 IRE
levels around black by making the right-most level disappear in the adjacent black
while making the left-most level just visible.
In digital systems, the number of steps of dynamic range is limited by the number
of bits used to represent them. Black is represented by 040h and white is repre-
sented by 3ACh. If clipping occurs in the digital processing of a signal, the "top
hat" and/or the 2 IRE superblack level can be clip off.
5400-A2
Model 5400 Dual Sync Gen/Test Signal Generator