HD3G7 HD 3 Gb/s SDI Video Generator
The Vertical Sweep zone plate is a “K
Y
2
-only” zone plate. (See Figure 3-80.)
Figure 3-80: A “K
Y
2
-only” zone plate
K Parameter
Display name:
K (Phase)
Units:
cycles
The K
∅
parameter is the initial phase of the pattern; it cannot create a pattern
by itself. To see the effects of this adjustment,
fi
rst set the K
X
coef
fi
cient to
approximately 0.75 and set a waveform monitor to view the line waveform. Then
adjust K
∅
. The sine wave will begin on each line at the selected point in the
cycle. Note that 0.25 cycle corresponds to a phase of 90 degrees (or
π
/2 radians);
recall that the sine of 90° is 1.0 and the sine of –90° is –1.0. When K
∅
= 0.25,
the pattern will begin in the upper left corner of the screen as white; when K
∅
= –0.25, the beginning will be black.
K
XT
Parameter
Display name:
KXT (T Ch. H Freq.)
Units:
c/aph per second (c/aph/s)
The K
XT
(T Ch. H Freq.) parameter controls the change in horizontal sine
frequency over time. Setting K
XT
to 1.0, for example, causes the horizontal
frequency to increase by one c/aph each second. If K
X
is 0.0, then the frequency
will be 10 c/aph after ten seconds, 20 c/aph after twenty seconds, and so forth.
The frequency will increase until it reaches the maximum for the active format,
then the phase of the signal will “
fl
ip” by 180° (the sine wave will become
“negative”) and the frequency will continue to “increase” through DC, when the
cycle will begin again.
K
YT
Parameter
Display name:
KYT (V Ch. V Freq.)
Units:
c/aph per second (c/aph/s)
3–158
TG700 TV Signal Generator Platform User Manual
Summary of Contents for TG700
Page 1: ...xx TG700 TV Signal Generator Platform ZZZ User Manual P071197003 071 1970 03...
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Page 27: ...Getting Started...
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Page 67: ...Operating Basics...
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Page 111: ...Modules...
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Page 337: ...Index...
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