Waveform viewers

AN2455

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After selecting the waveforms to plot, press the Plot Selected Curves button. You can

modify the frequency range from the main form by clicking the Freq Range button.

3.2

Phase noise

The following functions are available in the phase noise waveform viewer:

1.

Plot the overall phase noise and the following contributions:

–

reference clock

–

phase detector

–

loop filter

–VCO

–

RF output divider

2.

Save the overall phase noise to a text file.

3.

Load user measure/simulated data from a text file.

4.

Calculate the integrated phase noise by inserting the integration range limits and

pressing Enter. “K” and “M” are valid unit prefixes for the frequency.

5.

Calculate phase noise values for five fixed frequencies and for one user frequency.

You can modify the frequency range from the main form by clicking the Freq Range button.

Figure 8.

Phase noise waveform viewer

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