Giga-tronics 8650B Series, Руководство по эксплуатации

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Front Panel Operation
Publication 31470-001, Rev C, November 2, 2017 2-39
2.4.15 Burst Start Exclude, Burst End Exclude
When measuring burst signals, it is sometimes desirable to mask the beginning or the end of a burst so that
overshoot and other distortions do not affect the reading.
The Burst Start Exclude and Burst End Exclude features make it possible for BAP mode measurements to exclude
the beginning or the end of a burst in this way. Both features can be used simultaneously, but this requires
caution: if the excluded periods overlap, there is nothing left of the burst to be measured. If the entire burst is
excluded, NoSync will flash on the screen to the right of the sensor power units, and the meter will revert to
average measurement in the style of the MAP mode.
The start exclude time is selected from a series of discrete values from 0.000 ms to 45.548 ms in increments of
0.027 ms. The end exclude time has the same discrete values available except the maximum time value is
limited to 31.960 ms when burst dropout time is 0.000 ms. For non-zero values of burst dropout time, the
maximum value of end exclude time is limited to 3.423 ms minus the burst dropout time setting.
Figure 2-20: Burst Start Exclude & Burst End Exclude