Manipulating Waveforms
TDS 340A, TDS 360 & TDS 380 User Manual
3–7
Use the horizontal menu to perform these tasks.
Press the main-menu button Time Base. Use the side menu to select from these
options:
H Press Main Only to show only the main time base.
H Press Intensified to show both the main and delayed time bases. The
oscilloscope intensifies a portion of the waveform; this intensified zone
indicates the location of the delayed time base with respect to the main. Use
the horizontal SCALE knob to change the length of the zone and the General
Purpose Knob to change its position.
H Press Delayed Only to show only the delayed time base.
H Use the General Purpose Knob to adjust the delay time (the interval between
the main and delayed time bases). You adjust the delay time in coarse
increments when Main Only or Intensified are selected and in fine incre-
ments when Delayed Only is selected. The side menu selection Delayed
Runs After Main shows the delay time.
H Press Set to Min to set the delay time to its minimum value.
Press the main-menu button Trigger Position. Use the General Purpose Knob to
adjust horizontal trigger position or use the side menu to set the trigger position
to near the beginning, middle, or end of the waveform record. (The TDS 380
maximum pretrigger is 75%.)
Press the main-menu button Fit to Screen. Use the side menu to select from these
options:
H Press Off to display 500 points of the 1000-point waveform record. The
waveform record icon, described on page 2–6, shows the location of the
displayed portion of the waveform record. Use the horizontal POSITION
knob to adjust the portion of the waveform record to display.
H Press On to display the entire 1000-point waveform record. If you use this
setting to display FFT math waveforms, you can view a complete frequency
spectrum, from DC to the Nyquist frequency.
Select the Time Base
Adjust Trigger Position
Select Fit to Screen
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