Dataman 520 Series - Manual (Page 26)

DATAMAN oscilloscope
User’s Guide
The data from AD converters are stored in the onboard memory M. This memory is
addressed by address counter ADC, which starts to count immediately after start of
measurement, regardless of trigger event. The occurrence of valid trigger event starts
the after trigger data counter (ACC). Comparator CMP compares the state of ACC
with the output of register (REG), which contains data amount acquired after trigger.
When the output of ACC reaches the value written to REG, the comparator produces
the signal (done), which stops both the ADC and ACC counters. The amount of data
written after trigger to memory depends on the value of REG. The value written to
REG controls the relation of the trigger event and the displayed data. Changing the
value of REG it is possible to display data before, before and after or only after
trigger.
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