Oscilloscope Glossary

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Term Definition
uncertainty

Estimate of the possible error of a measurement or estimated deviation from the actual value.

USB

Universal Serial Bus = computer interface

VME

Versa Module Eurocard bus - computer bus standard standardized by the IEC as ANSI/IEEE 1014-1987.

VXI

VME eXtensions for Instrumentation - open standard platform for automated test based upon VMEbus. Specified and managed by VXIbus Consortium. More information see: http://www.vxibus.org/

waveform update rate

After each signal acquisition the oscilloscope needs some time for processing and analysis of the data. After that time the scope can aquire again new data. The time between these acquisitions is called blind time or dead time. The ratio of acquisition and dead time specifies the waveform update rate.

zero offset

Reading that occurs when the input terminals of the oscilloscope are shorted.