Glossary
TDS3000 Series User Manual
Glossary–9
Tek Secure
A feature that erases all waveform and setup memory locations
(setup memories are replaced with the factory setup). Then it
checks each location to verify erasure. This feature is useful
where the oscilloscope is used to gather security-sensitive data.
Time Base
The set of parameters that let you define the time and horizontal
axis attributes of a waveform record. The time base determines
when and how long to acquire record points.
Vertical Bar Cursors
The two vertical bars you position to measure the time
parameter of a waveform record. The oscilloscope displays the
value of the active (moveable) cursor with respect to trigger and
the time value between the bars.
Video Trigger
Triggering on the sync pulse of a composite video signal.
XY Format
A display format that compares the voltage level of two
waveform records point by point. It is useful for studying phase
relationships between two waveforms.
YT Format
The conventional oscilloscope display format. It shows the
voltage of a waveform record (on the vertical axis) as it varies
over time (on the horizontal axis).
Zoom
The horizontal magnification capability of the oscilloscope.
Zoom is a display function; adjusting zoom does not affect the
acquired waveform.
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