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Understanding Oscilloscope Functions
18
TDS1000/2000-Series Digital Oscilloscope User Manual
Time Base
The oscilloscope digitizes waveforms by acquiring the value of an
input signal at discrete points. The time base allows you to control
how often the values are digitized.
To adjust the time base to a horizontal scale that suits your purpose,
use the SEC/DIV knob.
Scaling and Positioning Waveforms
You can change the display of waveforms by adjusting their scale
and position. When you change the scale, the waveform display will
increase or decrease in size. When you change the position, the
waveform will move up, down, right, or left.
The channel reference indicator (located on the left of the graticule)
identifies each waveform on t he display. The indi cator points to the
ground level of the waveform record.
To view the display are a a nd readouts, refer to page 28.
Vertical Scale and Posi tion
You can change the vertical position of waveforms by moving them
up or down in the display. To compare data, you can align a
waveform above another or you can align waveforms on top of each
other.
You can change the vertical scale of a waveform. The waveform
display will contract or expand about the ground level.
For oscilloscope-specific descriptions, refer to page 34 in the
Operating Basics chapter and page 112 in the Re ference chapter.