Tektronix TDS5052 User Manual

Acquiring Waveforms
TDS5000 Series User Manual
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data points to the left. To stop acquiring data, push the front-panel RUN/STOP
button (see Figure 3--7).
Use untriggered roll mode to continuously observe a slow process. Apply math
and measurement operations after you push RUN/STOP to stop the acquisition.
Untriggered Roll Mode with Single Sequence. Untriggered roll mode with single
sequence displays newly acquired data points at the right edge of the waveform
record while moving older waveform data points to the left. Acquisitions
automatically stop after a complete waveform record is acquired (see Fig-
ure 3--7).
Use untriggered roll mode with single sequence to save data for later viewing.
For example, at 20 seconds per division and 30 K record length, there are 12000
seconds of acquired data points.
Acquisitions
continue
Untriggered roll
Complete waveform record
Acquisitions
stop
Untriggered roll with single sequence
Acquisitions
start
New data points
Acquisitions
start
New data points New data points
Old Data ContinuesOld data continues
Old DataOld data
Old DataOld data
Figure 3- 7: Roll modes
Under certain conditions, a waveform may be aliased. When a waveform is
aliased, it appears on screen with a frequency lower than the actual waveform
being input, or it appears unstable even though the TRIG’D control is lighted.
Aliasing occurs because the oscilloscope is not sampling the signal often enough
to construct an accurate waveform record. (See Figure 3--8.)
Preventing Aliasing

Tektronix TDS5052 Specifications

General

Brand	Tektronix
Model	TDS5052
Category	Test Equipment
Language	English