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Changing the Horizontal Time and Scale
The default horizontal-axis labels show time relative to the right-edge of the trace, where the newest data points
appear.
With this relative time scale, the time labels on the horizontal axis indicate the time that has elapsed since the data
was first displayed at the right edge. The numbers increase negatively as you move from right to left indicating that
the older data is to the left. You can change the horizontal scale to show
absolute
time (as shown in the figure
below) since the start of recording, rather than
relative
time (as shown in the figure above)
. When you aren’t
recording, the scale always shows time relative to the right edge.
The default horizontal scale shows 0.5 seconds between vertical grid lines and plots one point for every five
readings received from the AMS. You can change the horizontal scale to show from 0.1 seconds to 100 seconds
between the grid lines. At the 0.1 second setting, MultiView displays every reading received from the AMVS (that
is, one data-point per millisecond). When displaying at the higher scales, MultiV
iew can’t display every reading
received from the AMS, so it displays a vertical bar indicating the range of values for the time span represented by
any given point on the horizontal axis. For example, at the default scale of 0.5 seconds/division, each vertical bar
plotted represents five readings and shows the range of those five readings. The horizontal-
scale setting doesn’t
affect the data recorded, only the data displayed.
0.5 seconds
—
the default setting
Relative time
—
increases to the
left
New data
appears here
Absolute time
—
increases to the
right
