Glossary
Glossary- 2
TDS5000 Series User Manual
Automatic trigger mode
A trigger mode that causes the oscilloscope to automatically acquire if
triggerable events are not detected within a specified time period.
Autoset
A function of the oscilloscope that automatica lly produces a stable wavefor m of
usable size. Autoset sets up front-panel controls based on the characteristics of
the active wavef or m. A succ essf ul autoset will set the volts/div, time/div, and
trigger level to produce a coher ent and stable wavefor m display.
Average acquisition mode
In this mode, the oscilloscope acquires and displays a waveform that is the
averaged result of several acquisitions. Averaging reduces the apparent noise.
The oscilloscope acquires data as in the sample mode and then averages it
according to a specified number of averages.
Averaging
Displaying a trace that is the combined result of several acquisitions, thereby
reducing apparent noise.
Bandwidth
The highest frequency signal the oscilloscope can acquire with no more than
3dB(× .707) attenuation of the original (reference) signal.
Burst width
A timing measurement of the duration of a burst.
Channel
One type of input used for signal acquisition. The oscilloscope has four
channels.
Channel/probe deskew
A relative time delay for each channel. This lets you align signals to
compensate for the fact that signals may come in from cables of differing
length.
Channel Reference Indicator
The indicator on the left side of the display that points to the position around
which the waveform contra cts or expands when ver tica l scale is change d. This
position is ground when off se t is set to 0 V; otherwise, it is ground plus of fse t.
Control window
A group of related controls for a major oscilloscope function that the
oscilloscope displays at the right of the screen.
Coupling
The association of two or more circuits or systems in such a way that power
or information can be transferred from one to the other. You can couple the
input signal to the trigger and vertical systems several different ways.
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