- Frequency -
Test the Tone Generator's frequency.
You can attach the output of the tone generator directly to an oscilloscope.
The horizontal line on the 'scope is actually a dot moving so rapidly it draws a line.
The speed of the dot moving across the screen is controlled by the
"horizontal sweep" knob. The sweep rate is usually given in seconds per division.
In that case, the frequency is the number of scale divisions included in
one cycle divided by the sweep rate (sec/div).
In the picture above, one cycle includes about 5.7 divisions (0.9 + 4 + 0.8). If the
sweep frequency were set at 0.02 second per division, the frequency of the wave pictured
would be (5.7 / 0.02 ) = 285 Hz.
Determine the frequency
produced by your Tone Generator.
Record the sweep rate and measure the length of one cycle,
then calculate the frequency.
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