Single Graph Menu - Ametek 7124 Instruction Manual

Chapter 5, FRONT PANEL OPERATION

5.3.28 Single Graph Menu

5-46
When Main Menu 2 is displayed, pressing a key adjacent to the Single Graph item
accesses the Single Graph menu, which is shown in figure 5-36.
The Single Graph menu plots the data of one curve stored in the curve buffer. This
allows real-time or post-acquisition display of selected instrument outputs in "strip
chart" format, and has a cursor which allows accurate determination of the output
value at a given sample point.
If there is no data in the curve buffer then the graph will show a straight line
representing zero. If curve storage is already running, or if there is data in the curve
buffer, then a curve will be displayed with the most recent value at the right-hand
side of the screen.
Figure 5-36 shows the layout of the Single Graph menu. The curve is displayed in
the central section of the display, with the keys on either side being used to adjust the
axes and to select the data to be shown, as follows:-
SCALE keys
The top and bottom left-hand
limits of the vertical axis with a 1% resolution, the set maximum and minimum
values being shown adjacent to them.
AUTO SCALE keys
The upper and lower middle pairs of left-hand
are used to autoscale the upper and lower limits of the vertical axis to match the
range present in the visible section of the displayed curve.
There is no facility for adjusting the x-axis scale, which always shows up to 243
points. Hence if a curve of more than this number of points is acquired it will not be
possible to show all of the points on the display at the same time.
Curve Selection keys
The keys on the top right-hand side of the display are used to select the curve to be
shown from those stored in the curve buffer. For example, if only X DATA and Y
DATA curves were specified, using the Curve Select sub-menu, as being required
then these would be the only two selections available.
Figure 5-36, Single Graph Menu
keys are used to adjust the upper and lower
keys (or the and keys)