HP 54750A, User Manual, Page: 244 / 478

Increasing Measurement Accurac y
and Time-Interval Measurement
Time-Interval Measurements
The faster the transition, the smaller the time error introduced by dc level
errors . This is true both for edges of the same polarity and for edges of
opposite polarity , as well as for channel-to-channel measurements , as
illustrated by Figure 9-4 . If the edges have a non-uniform slew rate with
fast and slow regions , try to reference the time-interval measurement to the
fastest-changing region as shown in Figure 9-5.
Figure 9-4. Faster transitions decrease eect of dc oset errors.
Figure 9-5. Measure time intervals at fastest-changing part of transition.
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