Understanding the status bar – Measurement Computing DaqView User Manual
Page 44
5-8 The Scope Window
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DaqView User’s Guide
Understanding the Status Bar
A status bar at the bottom of the display page shows numerical data for any one selected channel of a single
scope or chart. Data such as Time and amplitude Value are in reference to cursor position on the display. If
two cursors are employed, data is in reference to the last cursor moved; or in the case of Logic Duty Cycle,
related to the duration between two cursors. The far left of the status bar (not shown) indicates whether the
acquisition is “running” or “idle” by displaying the applicable term.
Note: Certain labels applicable to a display’s status bar will not be visible until after the first calculation is
made; for example, RMS, THD, Peak, and Power.
Status Bar
– Example 1 Analog Scope
Note: In this figure you can tell that the second cursor was the last cursor moved because the status bar matches
the cursor’s time [0.08 seconds on the X-axis] and amplitude [-8.966626 Volts on the Y-axis].
Time: The time value (from the x-axis) for the position of the cursor last moved.
Value: The amplitude (from the y-axis) of the selected channel at the cursor position.
Avg.: The average value for all data points of the selected channel.
Min: The largest negative value reached by the selected channel.
Max: The highest value reached by the selected channel.
RMS: The root-mean-square (RMS) value for all data points of the selected channel.
RMS is not available for stripcharts.
Display charts are intended for viewing general data trends and employ a decimation process to
facilitate continuous scrolling. Because of the decimation process it is common for Charts and
Scopes to present a different rendering of the same signal. The Scope display will always be the
more accurate of the two renderings since it represents all data points.
Select the desired
channel from this
region.
Channel 1 is
currently selected.
Time and Value for the 2
nd
cursor
Time and Value
for the 1
st
cursor.
Delta [between the 2 cursor points]