Tektronix AVG1, User Manual

Page: 38 / 146

Operating Procedures
2- 14
AVG1 Analog Video Generator User Manual
You can define a circle that is overlaid on the test signal output. The Circle
Overlay parameters settings affect all test signals from this module. Entered
values are constant, regardless of the test signal or video standard.
To define a circle overlay, follow these steps:
1. In the Module Parameters window, shown on page 2--13, touch Circle
Overlay to enter the Circle Overlay window. The Circle Overlay window is
shown in the following illustration.
.
2. Touch On/Off to turn on the circle overlay.
3.
Touch
Diam
.
4. Rotate the Navigation knob or enter a value from the keypad. Rotating the
knob changes the diameter by percentages of Active Picture Height (APH).
5. Select H Pos and rotate the Navigation knob to move the circle horizontally
by a percentage of APH.
NOTE
. As you change the values using the knob, the circle is drawn in a quick
draw mode. Once values stop changing, the overlay is redrawn in full resolution.
6. Select V Pos and rotate the knob to move the circle vertically by a percent-
age of APH.
7.
If you want to reset the values, touch
Reset All
. This will set the diameter,
horizontal, and vertical to 90%, 0, and 0 respectively.
8. Press Quit to exit the window.
Circle Overlay