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DSO: Relationship of memory depth and sample rate

Question asked by francism on Jan 30, 2018
Latest reply on May 2, 2018 by algoss

According to the datasheet, the DSOX 2012A memory_depth is 100 kpts per channel. When I choose 5 ms/DIV on the time scale, the displayed sample_rate is 1 MSa/s. The time_span on the display screen is 50 ms (= 5 ms x 10). The simple relationship:
sample_rate = memory_depth / time_span
is leading to (100 kpts)/(50 ms) = 2 MSa/s instead of 1 MSa/s. What I am doing wrong? Thank for any help!