Tektronix TG8000 User Manual

SDI7 Dual Channel SD/HD/3G SDI Video Generator module
K
Y
2
parameter
Display name: K
Y^2 (V Sweep).
Units: c/aph per active picture height (c/aph
2
)
The K
Y
2
(V Sweep) parameter sets the increase (or decrease) in vertical frequency
down the frame. (K
Y
2
compares to K
X
2
as K
Y
compares to K
X
.) Again, a good way
to see the ef
fect of K
Y
2
is to view the field on a waveform monitor. With KY set to
0.0, a K
Y
2
coefficient of 10 will result in the apparent vertical sine wave changing
from DC to 10 c/aph from the top of the picture to the bottom.
To center the “DC point” a t mid-screen, set K
Y
2
to –2 times K
Y
.
The Vertic
al Sweep zone plate is a “K
Y
2
-only” zone plate. (See Figure 3-120.)
Figure 3-120: A “K
Y
2
-only” zone plate
K parameter
Display name: K (Phase)
Unit
s: cycles
The K
∅
parameter is the initial phase of the pattern; it cannot create a pattern
by i
tself. Toseetheeffectsofthisadjustment,first set the K
X
coefficient 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.
TG8000 Multiformat Test Signal Generator User Manual 3–279

Tektronix TG8000 Specifications

General

Brand	Tektronix
Model	TG8000
Category	Portable Generator
Language	English