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CRT DISPLAY
Gralicule
The display graticule is an internally generated 10 division by 10 division rectangle for referencing frequency, time,
and amplitude measurements. Double markings at the left, right, and bottom designate the center axes.
The graticule
The graticule
aspect ratio
aspect ratio
Center line -b
Center line -b
The graticule may be blanked from the display with KEY FUNCTION [unl m and restored with [ n.
For CRT photography, the graticule may be intensified independent of the annotation and trace by pressing the
following sequence:
For more intensity, repeat the last two number entries, 1163 Hz and 2115 Hz. I';:1 returns the graticule.to
normal.
Traces
Three separate traces, A, B, and C, can be written onto the display. Each trace consists of 1000 separate straight-
line elements drawn between 1001 fixed points across the CRT X and Y axis coordinates designate the particular
points between which the elements are drawn. Terms used to describe trace composition are defined as follows:
Point
A "point"
1,001 points along the X (horizontal) axis of the CRT graticule, numbered from 0 on the far left
graticule line to 1000 on the far right graticule line. Similarly, there are
(vertical) axis of the CRT graticule, numbered from 0 on the bottom graticule line to 1000 on the top
graticule line. An additional 22 points of overrange available above the top graticule line provide the
Y axis with a total of 1,023 points.
Center line
Center line
the context of this manual is a fixed location on the CRT display. There are
in
CRT DISPLAY OVERVIEW
1,001
points along the Y
Manual Operation
3 1
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