How the Instrument Works
Basics of Sequential Sampling
The number of points in a complete acquisition sequence is known as the
record length. Normally, optimum record length is automatically selected
by the instrument, but it can be set manually to any value between 16 and
4096 points by selecting the Record Length softkey in the Acquisition menu.
Figure 13-3 shows a waveform acquired with a record length of 64, while
Figure 13-4 shows the same waveform acquired with a record length of
2250. In most cases, record length should be left on automatic. Histogram
measurements, in particular, are susceptible to errors with a non-optimum
record length.
Figure 13-3. Acquisition with record length = 64.
13-6