Method for measuring phase locked loop bandwidth parameters for high-speed serial links

A method for measuring a phase locked loop bandwidth parameter for a high-speed serial link, the method comprising the steps of:

• initiating a frequency of a clock input of a phase locked loop equal to a reference frequency with a frequency generator;
• determining a reference jitter amplitude value of a clock output of the phase locked loop with a waveform analyzer at the reference frequency, the reference jitter amplitude value being a function of a time interval error jitter trend of the clock output at the reference frequency, the time interval error trend being determined by the waveform analyzer;
• and
• adjusting the frequency of the clock input with the frequency generator until an adjusted jitter amplitude value of the clock output reaches a goal value relative to the reference jitter amplitude value, the adjusted jitter amplitude being a function of a time interval error trend of the clock output at the adjusted frequency, the time interval error trend being determined by the waveform analyzer.

A method for measuring a phase locked loop bandwidth parameter for a high-speed serial link, the method comprising the steps of:

• initiating a frequency of a clock input of a phase locked loop equal to a reference frequency with a frequency generator;
• determining a reference jitter amplitude value of a clock output of the phase locked loop with a waveform analyzer at the reference frequency, the reference jitter amplitude value being an alternating current root mean square value that is a function of a time interval error trend of the clock output at the reference frequency, the time interval error trend being determined by the waveform analyzer;
• and
• adjusting the frequency of the clock input with the frequency generator until an adjusted jitter amplitude value of the clock output reaches a goal value, the adjusted jitter amplitude being an alternating current root mean square value that is a function of a time interval error trend of the clock output at the adjusted frequency, the time interval error trend being determined by the waveform analyzer.