HD3G7 HD 3 Gb/s SDI Video Generator
Figure 3-77: A “K
X
-only” zone plate
K
X
2
Parameter
Display name:
KX^2 (H Sweep.)
Units:
c/aph per active picture height (c/aph
2
)
The K
X
2
(H Sweep) parameter sets the increase (or decrease) in the horizontal
frequency as a function of position along the video line. When K
X
2
alone is
applied, the result resembles a common sweep test signal. Again, use a waveform
monitor to look at (all) the video lines to see the effects of K
X
2
. When K
X
is 0.0,
setting K
X
2
to 9 will result in the line waveform changing from DC to 9 c/aph in
the width equal to one “active picture height.” As with K
X
, the ending frequency
will depend on the aspect ratio of the active video format. For example, in a
16:9 format with a K
X
of –9.0, a K
X
2
coef
fi
cient of 9.0 will cause the waveform
to increase to DC in one “aph.” The frequency will continue to increase to
approximately 7.0 c/aph by the end of the line.
Use this formula to calculate KX and KX 2 terms for a sweep with the DC point
at mid-screen:
where R
aspect
is the aspect ratio (width ÷ height) of the active format.
The Horizontal Sweep zone plate (H Sweep) is a “K
X
2
-only” zone plate. (See
Figure 3-78: A “K
X
2
-only” zone plate
3–156
TG700 TV Signal Generator Platform User Manual
Содержание TG700
Страница 1: ...xx TG700 TV Signal Generator Platform ZZZ User Manual P071197003 071 1970 03...
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Страница 27: ...Getting Started...
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Страница 34: ...Getting Started Figure 1 1 Installing the rackmount hardware 1 6 TG700 TV Signal Generator Platform User Manual...
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