Glossary
TDS3000 Series User Manual
Glossary–3
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.
Communication Module
A optional module that adds I/O ports to the oscilloscope.
Delay
A means to delay the acquisition to start long after the trigger
event has occurred. The trigger point does not have to be within
the waveform record when delay is on.
Digital Phosphor
A term that describes the way the digitizing oscilloscope can
simulate the acquisition behavior of an analog oscilloscope.
Displayed points vary in intensity depending on the frequency of
their acquisition and then decay as if the oscilloscope had an
analog CRT (cathode ray tube).
Digital Real Time Digitizing
A digitizing technique that samples the input signal with a
sample frequency of four to five times the oscilloscope
bandwidth. Combined with (sinx)/x interpolation, all frequency
components of the input up to the bandwidth are accurately
displayed.
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.
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