28119 Parallax Inc, 28119 Datasheet - Page 123

• 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

Notice that output signal is a mirror image of the input signal (inverted), except that the
output signal has twice the amplitude (a gain of 2).
Is the actual gain close to 2? You can also click on the Measurements tab to view and
compare the statistics for both signals.
√
√
√
√
√
Re-run the program OPAmpExamplewithFREQOUT.bs2.
Adjust the tap on the potentiometer by gently twisting the knob until the entire
signal is visible and no longer clipped, as in Figure 8-16 .
Under the Cursors tab, set the Cursor Settings switches to Horizontal Bars and Snap to
Plot .
Measure the voltage difference between the high and low peaks of the input
signal.
Repeat this measurement with the output signal, and then compare the difference
in amplitude.
Figure 8-16:
Potentiometer
input sine wave