Parallax PropScope, Руководство пользователя

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4.1 Oscilloscope
Trigger Tab
The Trigger Tab let's you configure the trigger to stabilize your signal. When the Trigger is "Off",
the PropScope will periodically take samples and display them. This typically results in a signal
that appears to move left/right- depending on when the sample istaken.
Turn the "Trigger Mode" to "Continuous" to continually trigger on an event. In "Step" mode, you
can step one trigger event at a time.
The Trigger Event is defined by it's edge, level, and source. PropScope can look for either
"rising" or "falling" edges- where the signal is either increasing or decreasing through a set level.
In "normal" level mode, you need to adjust the "level" by dragging the yellow trigger up/down in
the graph- it's at the very left of the graph. In "auto" mode, the trigger level is set to the average
of the signal's measured value. You can choose to trigger on either ch1, ch2 or the external
channel which you can set between -10 and 10v using the "Tools-Configure External Trigger"
menu.
Cursor Tab
The Cursor Tab let's you manage the pair of horizontal and vertical cursors. You can choose to
show vertical, horizontal, or both set of cursors. When they're shown, you can drag to position
them. You can also click the "Position" button and then click on the graph to set the cursor's
position. The slider on the right let's you "pan" all cursors, or select a region to "zoom" into. The
"reset" button will reset the zoom.
Measure Tab
The Measure Tab displays the auto measurements continually taken for both channels. From top
to bottom they represent: maximum voltage, minimum voltage, peak to peak voltage, average
voltage and in the second column: period between peaks, frequency of cycle between peaks, and
rms.
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PropScope
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