Oscilloscope Glossary

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Term Definition
A/D

Analog-to-digital converter. Converts the analog signal received from the channel input into a digital information.

AC

alternating current = the flow of electric charge reverses its direction periodically.

accuracy
According to ISO 5725-1 the accuracy of a measurement refers to the closeness of the mean of the measurement results to the actual (true) value (trueness) and to the closeness of agreement within individual results (precision).  
ADC

Analog-to-Digital-Converter.

amplitude

Strength of a signal.

Analog-to-digital converter

Converts the analog signal received from the channel input into a digital information.

attenuation

Dimensionless ratio defining the decrease of signal amplitude. Reciprocal of gain. Sometimes expressed in decibels (dB).

auto range

The ability of an instrument to automatically switch to a measurement range which offers maximum resolution.

averaging

Calculation of an average measurement value to reduce noise in the signal.

AWG

Arbitrary Waveform Generator

AXIe

Open system modular instrumentation standard based on AdvancedTCA. Also known as "big brother of PXI". Using horizontal configurations for minimal rack space of large systems. Managed by the AXIe Consortium, see http://www.axiestandard.org/