How to Make Full Use of Digital Oscilloscopes

Digital storage oscilloscope (DSO) or Digital real-time oscilloscope (DRT) is testing frequency by calculating waveforms period. Among this time, waveforms period is certain by testing the median between the maximum and minimum on the waveforms which are adjacent. Then test the first median and the third median to sure the period.

All the digital oscilloscopes have a restriction of horizontal resolution. The limit is sure by the record of the maximum possible length. The record length is the number of level points among the digital waveforms. The record is the limit of the test frequency and period.

Making the most accurate of period and test frequency, we should ensure the possible resolution. We should use up the possible record length, then choose the knob of horizontal scale, so that we can use the limit scale length to test the period and frequency. To eliminate the noises we can use possible large signal averaging or sound processing mode. It is good for digital oscilloscopes to test the value or location of the waveform midpoint. Therefore, the best and most accurate the period of waveform and frequency can easy be measured.