Tektronix CSA8000B - Manual (Page 335)

Glossary
CSA8000B & TDS8000B User Manual Glossary- 3
Channel number
The number assigned to a specific signal input channel of an installed
sampling module. Assignment of channel numbers is described in Maximum
Configuration on page 1--11.
Channel waveforms
Waveforms resulting from signals input into sampling-module channels and
digitized and acquired by the instrument. See Live Waveforms.
Control knob
see Knob
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. This instrument
supports direct coupling only at its inputs; the user must provide any
alternate coupling (ac, frequency filtering) externally.
Cursors
Any of three styles of paired markers that you can use to make measurements
between two waveform locations. The instrument displays the values (expressed
in vertical or horizontal units) of the position of each cursor and the distance
between the two cursors.
Delay time
See Horizontal Delay.
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 instrument that displays the three graticules, one each for the
Main, Mag1, and Mag2 time bases, the waveforms, and other display related
elements (waveform labels, cursors, test masks, measurement annotations,
etc.).
Dragging
The act of changing your selection either by clicking (mouse) or touching
(touchscreen) a point on the screen and pulling across the screen while
holding down the key (mouse) or maintaining contact with your finger
(touchscreen).