70009 Parallax Inc, 70009 Datasheet - Page 17

• Manufacturer Part Number: 70009
• Description: BOOK UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc
• Type: Signal Analysisr

Specifications of 70009

• Style: Book
• Title: Understanding Signals
• Contents: Guide to Generate, View and Measure Wave Forms
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 70009PAR

the oscilloscope, press the Run/Stop button again. You will see it depress, indicating the
oscilloscope is idle.
The FFT button opens the Fast Fourier Transformation window (Figure 1-7). The
OPTAscope’s Fast Fourier Transformation (FFT) function emulates a device called a
spectrum analyzer by displaying the sine wave frequencies contained by a signal.
Plot Area Indicator
The Plot Area Indicator bar depicts the portion of the signal visible in the Plot Area. The
OPTAscope 81M acquires 1,500 points every trigger event. The Plot Area automatically
displays the center 500 points, represented by the blue slider bar. The red line represents
the entire 1500 points captured. You may view these portions of the signal to the left or
right of center by sliding the blue bar along the red line.
The orange arrow within the Plot Area Indicator bar indicates the trigger position and its
relative location within the 1,500 points of data acquired. The “ T ” buttons on each end of
the Plot Area Indicator bar move the trigger position to 10%, 50% (default) and 90%. Figure
Figure 1-7:
The
OPTAscope’s
FFT Window.