User manual

35
UNI-T
®
UT4000 User Manual
Press the [ACQUIRE] button to pop up the sampling setup menu. You can use this menu
to adjust the sampling mode.
Table 2-14 Sampling menu
Function Menu Setup Explanatory Note
Acquisition mode Normal sampling
Peak detect
Average
Envelop
Turn on the ordinary sampling mode.
Turn on the peak detect mode.
Set to average sampling and display the
average number of times.
Use the peak detect mode for every
independent acquisition.
Average number of
times (when average
sampling is selected)
2~256 Set the average number of times in multiples
of 2, i.e. 2, 4, 8, 16, 32, 64, 128, 256. To
change the average number of times, use the
multifunction control knob shown in Figure
2-18.
⎯
Storage depth Standard storage
Long storage
DSO storage.
USB drive storage (long storage is disabled
when the logic analyzer is on and dual time
base is in operation).
Quick acquisition On
Off
Acquire at a high screen refresh rate for more
realistic reflection of waveform status.
Close the quick acquisition function.
By changing sampling setup, you can observe the consequent changes in waveform
display. If the signal contains considerable noise, you will see the following displays
when average sampling is not selected and when 32-time average sampling is selected.
For sampling waveform display please see Figure 2-19 and Figure 2-20.
Figure 2-19 Waveform without average sampling