Tektronix 071-0957-03, User Manual, Page: 238 / 254

Glossary
Glossary- 2
TDS3000B Series User Manual
Attenuation
The degree the amplitude of a signal is reduced when it passes
through an attenuating device such as a probe or attenuator (the
ratio of the input measure to the output measure). For example,
a 10X probe attenuates, or reduces, the input voltage of a signal
by a factor of 10.
Auto Trigger Mode
A trigger mode that causes the oscilloscope to automatically
acquire if it does not detect a valid trigger event.
Autoset
A feature that automatically sets the vertical, horizontal, and
trigger controls to provide a usable display.
Average Acquisition Mode
A mode in which the oscilloscope acquires and displays a
waveform that is the averaged result of several acquisitions.
The oscilloscope acquires data as in the sample mode and then
averages it according to a specified number of averages.
Averaging reduces uncorrelated noise in the displayed signal.
Backlight
The illumination behind the liquid-crystal display.
B Trigger
A second trigger system that works with the main (A) trigger to
capture more complex events. You can use the dual A and B
triggers to trigger after a given wait time or number of events.
Cursors
Paired markers that you can use to make measurements between
two waveform locations. The oscilloscope displays the values
(expressed in volts, time, or frequency) of the position of the
active cursor and the distance between the two cursors.