Diagrams of the three functions (jitter transfer, jitter tolerance, unit step response) for a PLL of the first order and of type zero. The loop is a slave loop in the sense that the reference timing comes from the input. The tolerance function is drawn for the cases that the border depends on the phase comparator only, on the variable phase element only, on both.
<a href="//commons.wikimedia.org/wiki/User:BORGATO_Pierandrea" title="User:BORGATO Pierandrea">BORGATO Pierandrea</a>
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<span class="int-own-work" lang="en">Own work</span>