Take Analog Measurements - Parallax PropScope Manual

14
PropScope

3.1 Take Analog Measurements

Make sure your PropScope Hardware and Software is properly installed. To measure analog
signals you'll use the BNC probes that came with the PropScope. Make sure they're properly
connected to your scope.
Once you start the PropScope software you should see the Oscilloscope view with 2 traces- the
blue representing the analog measurements from the Ch1 probe, the red from the Ch2 probe.
Now you're ready to start measuring signals.
Here's an image of a 1V peak to peak sine wave cycling at 10kHz. Notice that I turned the
timescale knob to 20us/div. At 10kHz, the sine wave has a period of 100us, so it repeats itself
every 5 horizontal divisions. I've set the vertical resolution to .2V/div which gives me 5 vertical
divisions for the signal. I've dragged the trace left/right and up/down to move it to the current
position. I clicked on the left part of the graph to set a trigger to stabilize the signal- notice the
yellow marker. Since the PropScope takes samples before and after the trigger, I can look at any
part of the signal surrounding the trigger condition using the top scroller. I've manually positioned
both horizontal and vertical cursors to let me verify the automatic measurements taken by
PropScope.
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