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CRT DISPLAY OVERVIEW
Display Unit
axis. The distance along the X axis between the far left graticule line and the far right graticule line is
1000 display units. The Y axis length between the bottom graticule line and the top graticule line is
also 1000 display units. Although the Y axis can be extended another 22 display units above the top
graticule line, the extended area is not calibrated.
X, Y coordinates to a particular point on the display are given in display units relative to X, Y
coordinates 0,O at the junction of the far left and bottom graticule lines.
Element
the visible straight line drawn to it from the preceding point. An element drawn parallel with a vertical
or horizontal graticule line is one diplay unit long. An element drawn at an angle to the graticule lines
is longer, its actual length depending on the angle.
Vector
A vector is identical with an
Point of
x, y coordinates
Point of
x, y coordinates
When the analyzer is operated manually (i.e., with its front-panel controls), the display
size remains constant and the above definitions are fully applicable. When it is operated
remotely with a controller, however, three additional larger display sizes are available
through the display-size programming commands. For these larger-than-normal dis-
play sizes the lower left reference coordinates and the upper right trace limit expand
beyond the CRT's outer graticule lines. For further information on remotely-controlled
(i.e., programmed) display sizes, refer to commands Dl, D2, and D3 under Program-
ming Commands in Section II of this manual.
32
Manual Operation
One display unit is the distance between two points (see above) along an X or Y
An element is a distinct portion of the trace drawn on the CRT It comprises a point and
element,
Overrange = 22 point
TRACE DISPLAY TERMS
except that it can be either visible or blanked.
t
I
Graticule center
Point of
x, y coordinates
x, y coordinates
500,500
NOTE
CRT DISPLAY
Point of
x, y coordinates
1000.1000
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