28119 Parallax Inc, 28119 Datasheet - Page 49

• Manufacturer Part Number: 28119
• Description: KIT UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc

Specifications of 28119

• Lead Free Status: Contains lead
• Accessory Type: Oscilloscope
• Interface Type: USB
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ACTIVITY #2: SINE WAVE FREQUENCY AND AMPLITUDE
MEASUREMENT
This activity uses the same circuit you have already built. This activity will measure the
frequency and amplitude of a sine wave and compare it to the BASIC Stamp code that
generated the signal.
Measuring Frequencies with TestPiezoWithFreqout.bs2
Review the data in your Cursors measurement box. Does it compare to your BASIC
Stamp source code? Your ∆ should measure around 5.0 V peak-to-peak, and 200 Hz for
√
√
√
√
√
Re-run the program TestPiezoWithFreqout.bs2.
Press the Run / Stop button to view the signal, and then press again to capture it.
Under the Cursors tab, set the Cursor Settings switches to Paired Bars and Floating.
Place the red horizontal cursor on the bottom of the signal.
Place the red vertical cursor at the peak at the left (Figure 3-7). Now place the
blue horizontal cursor on the top of the signal and the blue vertical cursor on the
peak to the right.
Figure 3-7:
Measuring sine
wave frequency
and amplitude
with the Paired
Bars cursors