Ajabaas on mõõtevahendi elektroonilise vooluringi osis, mille pinge muutub ajas täpselt ja mida kasutatakse vahemikuinfo edastamiseks või lainekuju skaneerimise ajastamiseks, andes valimihetkede vektori, kus iga hetk vastab lainekujus unikaalsele valimile.
The timebase a part of an electronic circuit of measuring instrument having a voltage varying accurately with time and used to provide range information or to time the scanning operation of waveform. The timebase provides a vector of sampling instants where each instant corresponds to a unique sample in the waveform.
