60 System Operation
The major ticks represent 10% of the range, and the minor ticks represent
5% of the range.
If the Soft key labeled Show Max is selected, the maximum value is retained
and displayed in the bar graph with red color. The red bar is updated with
each measurement, if the current measured value is larger than the largest of
the previous measurements. Besides the maximum value being displayed
with a red bar, the actual value is displayed above the bar graph where
“Max=” shows the value. If the Soft key labeled Show Min is selected, the
minimum value is retained and displayed in the bar graph with green color.
The green bar is updated with each measurement, if the current measured
value is smaller than the smallest of the previous measurements. Besides the
minimum value being displayed with a green bar, the actual value is
displayed above the bar graph where “Min=” shows the value.
The maximum and minimum bars can be reset with the Reset m/M soft key.
For users who would like to fine
adjust a maximum or a minimum, the
1936/2936 offer the Auto Zoom
function. When the Auto Zoom soft
key is pressed another bar appears
above the Analog Bar. The bar length
is 2% of the Analog Bar. It is a display
of the region around the end of the
analog bar.
The Auto Zoom bar displays with white the current measured value, as the
Analog Bar does. However its trip is more sensitive, because the maximum
trip is +/-1% of the Analog Bar. If the Show Max or Show Min soft keys are
pressed, the system behaves the same as with the Analog Bar, displaying
with red the maximum value and with green the minimum value. As an
example, as Figure 56 shows, the red bar in the Analog Bar is very small, so
with the Analog Zoom this bar is extended giving the user the convenience to
see better small signal variations.
Pressing the Reset m/M soft key, clears the minimum and maximum bars
from both the Analog Bar and the Auto zoom graphs.
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