Capturing Data 3
Agilent 1000B Series Oscilloscopes User’s Guide 71
Memory Depth and Sample Rate
The number of points of oscilloscope memory is fixed (except when
divided between channel pairs), and there is a maximum sample rate
associated with oscilloscope’s analog- to- digital converter; however, the
actual sample rate is determined by the time of the acquisition (which is
set according to the oscilloscope’s horizontal time/div scale).
sample rate = number of samples / time of acquisition
For example, when storing 10 us of data in 10,000 points of memory, the
actual sample rate is 1 GSa/s.
Likewise, when storing 1 s of data in 10,000 points of memory, the actual
sample rate is 10 kSa/s.
The actual sample rate, is displayed in the Horizontal menu (see “To view
the sample rate” on page 44).
The oscilloscope achieves the actual sample rate by throwing away
(decimating) unneeded samples.
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