4.Advanced User Guidebook
It is used to reduce the random and
don't-care noises, with the optional
number of averages.
Set the waveform refresh rate, you can
turn on this mode when you need to
observe a single waveform.
The description of the Record Length menu is shown as follows:
Choose the record length
Note: When four channels are turned
on, the max record length is 100M; and
max 200M for two channels
（Need to meet either condition:
CH1&CH3 on, CH2&CH4 off;
CH2&CH4 on, CH1&CH3 off. ） ; max
400M for one channel.
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.
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