Tenma 72-14520 Instructions Manual page 30

High Resolution mode to minimize noise from small signal
Average
• In this acquisition mode, the oscilloscope obtains several waveforms and finds the
average, and displays the final waveform. This method can reduce random noise.
• By changing the acquisition mode settings, the resulting waveform display changes.
• The un-averaged and the 32 times averaged waveform are displayed below for
comparison.
Un-averaged
Note: Average and high resolution uses different average methods. The former is
multiple sampling average, the latter is single sampling.
Envelope
• The sampling points gathered at same time are calculated and the maximum
and minimum values are displayed. Peak detection mode is used for individual
acquisitions using general envelope mode.
Storage Depth
• The storage depth is the number of waveforms that can be stored in the
oscilloscope during a trigger acquisition. It reflects the memory storage capacity of
the acquisition.
• Default is 28Mpts storage depth (per channel). Users can set up their own storage
depth as automatic, 28K, 280K, 2.8M, and 28M.
Set Display System
• You can set the display type of the waveform, display format, duration, grid
brightness, and waveform brightness.
• Press the DISPLAY key to enter the display menu.
32x Averaged
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