User`s guide

DRCG Theory of Operation
This tool measures the absolute difference between two adjacent periods as seen in the figure below.
10,000 measurements are made for each group. So for '1 cycle-to-cycle', 10,000 measurements are
made of single adjacent periods, then the worst-case minimum difference between two periods (Period1-
Period2) is displayed as '1 cycle-to-cycle (-)'. The worst-case maximum difference between two periods
is displayed as '1 cycle-to-cycle (+)'. This process is then repeated for increasing numbers of periods.
Results from Rising Edge measurements are shown under the "Rising Edge Pulse" heading on the
summary page.
This method is also duplicated to measure falling edge periods with results displayed under "Falling Edge
Pulse".
Four separate sweeps are made of the entire process to give 4 columns of values. The worst case of the
four sweeps is shown under the 'Worst Case' heading. It is these values that are displayed on the "Jitter
Plot". If any of these values exceed the limits, a failure is indicated.
© WAVECREST Corporation 2005 Section 4 - GigaView
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