Oscilloscope Glossary

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Term Definition
harmonic distortion

Normally specified in dBc sometimes in audio applications also specified as a percentage. It is the ratio of the rms signal to the rms value of the harmonic in question.

HDMI

High-Definition Multimedia Interface - audio/video interface

Hertz

Cycles per second. Unit of frequency.

HP-IB

Short range digital communications bus originally invented in the late 1960s by Hewlett-Packard for automatic test equipment. Also known as IEE-488, GP-IB and GPIB.

Hz

Hertz - Cycles per second. Unit of frequency.