runt pulse
{{Short description|A narrow pulse that does not reach a valid high or low level (Digital electronics).}}
{{one source|date=July 2024}}
In digital circuits, a runt pulse is a narrow pulse that,
due to non-zero rise and fall times of the signal, does not reach a valid
high or low level. A runt pulse may occur when switching between
asynchronous clocks; or as the result of a race condition in which a signal takes two separate paths through a circuit, which may have different delays, and is then recombined to form a glitch; or when the output of a flip-flop becomes metastable.
Example
Some oscilloscopes provide a method for triggering on runt pulses. The oscilloscope triggers when the signal crosses one of two voltage thresholds, but not both.{{cite web
|publisher=Tektronix
|title=Oscilloscope triggering
|url=http://www.tek.com/Measurement/cgi-bin/framed.pl?Document=/Measurement/scopes/selection/trigger.html&FrameSet=oscilloscopes
|access-date=2008-05-20
|archive-date=2011-09-28
|archive-url=https://web.archive.org/web/20110928113849/http://www.tek.com/Measurement/cgi-bin/framed.pl?Document=%2FMeasurement%2Fscopes%2Fselection%2Ftrigger.html&FrameSet=oscilloscopes
|url-status=live
}}
References
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