Filter
Top Products
Glossary
TDS 620A, 640A & 644A User Manual
GlossaryĆ3
Cycle area
A measurement of waveform area taken over one cycle. Expressed
in voltĆseconds. Area above ground is positive; area below ground is
negative.
Cycle mean
An amplitude (voltage) measurement of the arithmetic mean over
one cycle.
Cycle RMS
The true Root Mean Square voltage over one cycle.
DC coupling
A mode that passes both AC and DC signal components to the
circuit. Available for both the trigger system and the vertical system.
Delay measurement
A measurement of the time between the middle reference crossings
of two different waveforms.
Delay time
The time between the trigger event and the acquisition of data.
Digitizing
The process of converting a continuous analog signal such as a
waveform to a set of discrete numbers representing the amplitude of
the signal at specific points in time. Digitizing is composed of two
steps: sampling and quantizing.
Display system
The part of the oscilloscope that shows waveforms, measurements,
menu items, status, and other parameters.
Edge Trigger
Triggering occurs when the oscilloscope detects the source passing
through a specified voltage level in a specified direction (the trigger
slope).
Envelope acquisition mode
A mode in which the oscilloscope acquires and displays a waveform
that shows the variation extremes of several acquisitions.
Fall time
A measurement of the time it takes for trailing edge of a pulse to fall
from a HighRef value (typically 90%) to a LowRef value (typically
10%) of its amplitude.
Frequency
A timing measurement that is the reciprocal of the period. Measured
in Hertz (Hz) where 1 Hz = 1 cycle per second.
Gated Measurements
A feature that lets you limit automated measurements to a specified
portion of the waveform. You define the area of interest using the
vertical cursors.