Extech Instruments 420 Specifikace stáhnout pdf (Strana 25)

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25

V5.1‐March2010

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Figure 15: Peak Detection

Glossary of Terms

• Collecting mode: The oscilloscope converts the collected analog data into

digital data for each of the following three modes: Sampling, Peak Detect, and

Averaging.

• Sampling: The waveform sampling resolution in seconds. Waveforms that change

faster than the sample duration will not be accurately captured.

• Peak value detection: In peak detect mode the meter can capture very narrow

pulses down to 50ns

• Averaging values: The oscilloscope averages a selectable number of

measurements. Random noise can be minimized in this mode.

• Duration time: A waveform can be held as a new waveform is displayed. The

amount of time the previous waveform is displayed is the ‘duration time’.

• Roll scan: The oscilloscope updates the waveform sampling points by scrolling

the screen from left to right (applicable only to primary time base settings above

50ms).

SELECTINGAC‐COUPLING

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Extech Instruments 420 Specifikace Strana 25