4.Advanced User Guidebook
The description of the Intrpl menu is shown as follows:
Use sine(x)/x interpolation
Interpolation method is a processing method to connect the sampled points,
using some points to calculate the whole appearance of the waveform. Select
the appropriate interpolation method according to the actual signal.
Sine(x)/x interpolation: Connect the sampled points with curved lines.
Linear interpolation: Connect the sampled points with straight lines. This
method is suitable to rebuild the straight-edged signals, such as square or
pulse wave.
Figure 4-4 Sine(x)/x interpolation