Tektronix TG700, Руководство пользователя

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HD3G7 HD 3 Gb/s SDI Video Generator
The K
YT
(V Ch. V Freq.) parameter controls the change in vertical sine frequency
over time. Setting K
YT
to 1.0, for example, causes the vertical frequency to
increase by one c/aph each second. If KY is initially 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 frequency will become “negative”)
and the frequency will continue to increase through DC in a repetitive cycle.
K
T
Parameter Display name: KT (T Freq.)
Units: cycles per second (c/s)
The K
T
(T Freq.) parameter, if used alone, does not create a “pattern.” Rather, the
entire screen will cycle (sinusoidally) between white and black. The effect will be
similar on either line or
fi eld display of a waveform monitor.
Typically, a small K
T
coef fi cient is set to add apparent motion to a standard circle,
sine wave, or sweep pattern. To see the picture effects of this parameter, select
any of the standard zone plates and vary K
T
. Note that the K
T
coef fi cient may be
positive or negative; the sign will determine the direction of the pattern’s motion.
K
T
2
Parameter Display name: KT^2 (T Sweep)
Units: cycles per second per second (c/s^2)
The K
T
2
(T Sweep) parameter sets the change in temporal frequency over time. If
K
T
is initially 0.0, setting K
T
2
to 1.0 will result in an apparent K
T
of 10.0 after ten
seconds, 20.0 after twenty seconds, and so forth. The temporal frequency will
increase to maximum, return to 0.0, and repeat the cycle as long as the value of
K
T
2
remains greater than zero.
Y/G/X Parameter This parameter displays one of the three signal components: the Y component for
a YC
b
C
r
sample structure, the G component for a GBR sample structure, or the
X component for an XYZ sample structure. Use the left ( ◄ ) or right ( ► ) arrow
button to set the component to ON or OFF .
Cb/B/Y Parameter This parameter displays one of the three signal components: the C
b
component for
a YC
b
C
r
sample structure, the B component for a GBR sample structure, or the
Y component for an XYZ sample structure. Use the left ( ◄ ) or right ( ► ) arrow
button to set the component to ON or OFF .
TG700 TV Signal Generator Platform User Manual 3–159