Tektronix TG8000 User Manual page 332

HD3G7 HD 3 Gb/s SDI Video Generator module
K parameter
XT
K parameter
YT
K parameter
T
K parameter
2
T
3–182
Display name: KXT (T Ch. H Freq.)
Units: c/aph per second (c/aph/s)
The K (T Ch. H Freq.) parameter controls the change in horizontal sine
XT
frequency over time. Setting K
frequency to increase by one c/aph each second. If K
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 "flip" by 180° (the sine wave will become
"negative") and the frequency will continue to "increase" through DC, when the
cycle will begin again.
Display name: KYT (V Ch. V Freq.)
Units: c/aph per second (c/aph/s)
The K (V Ch. V Freq.) parameter controls the change in vertical sine frequency
YT
over time. Setting K to 1.0, for example, causes the vertical frequency to
YT
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 "flip" by 180° (the frequency will become "negative")
and the frequency will continue to increase through DC in a repetitive cycle.
Display name: KT (T Freq.)
Units: cycles per second (c/s)
The K (T Freq.) parameter, if used alone, does not create a "pattern." Rather, the
T
entire screen will cycle (sinusoidally) between white and black. The effect will be
similar on either line or field display of a waveform monitor.
Typically, a small K coefficient is set to add apparent motion to a standard circle,
T
sine wave, or sweep pattern. To see the picture effects of this parameter, select
any of the standard zone plates and vary K
positive or negative; the sign will determine the direction of the pattern's motion.
Display name: KT^2 (T Sweep)
Units: cycles per second per second (c/s^2)
The K (T Sweep) parameter sets the change in temporal frequency over time. If
2
T
K is initially 0.0, setting K
T
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 remains greater than zero.
2
T
to 1.0, for example, causes the horizontal
XT
. Note that the K
T
to 1.0 will result in an apparent K
2
T
TG8000 Multiformat Test Signal Generator User Manual
is 0.0, then the frequency
X
coefficient may be
T
of 10.0 after ten
T