A/D, Digitizers, Transient Recorders Basics
A digitizer is an electronic acquisition device that acquires analog waveforms, processes them through analog-to-digital converters (ADC’s) and sends the digitized sample to a buffer, which allows them to be saved before being processed by a computer. Waveform digitizers are plug-in cards for PCs or industrial PCs that are used to measure continuous voltage signals as well as fast signal changes like voltage transients. Therefore they're also called transient recorder.