The R&S®RTO digital oscilloscope and the R&S®FSWP phase noise analyzer measure jitter signals (TIE) comparably and precisely – the R&S®RTO in the time domain, the R&S®FSWP in the frequency domain. The R&S®RTO offers more capability with additional results such as duty cycle or data dependent jitter and analysis of fast transient signals at limited sensitivity. The R&S®FSWP offers easy separation of periodic and random jitter at an unbeatable sensitivity of a few fs. The R&S®RTO and the R&S®FSWP complement one another well and present an ideal solution for jitter measurements.