How to reduce noise by measuring current probe

Measure how the current probe reduces noise ：

High resolution acquisition mode

Most digital oscilloscopes can provide... In normal acquisition mode 8 Bit vertical resolution . Some oscilloscopes can provide higher vertical resolution in high resolution mode , Usually 12 position , This mode can reduce vertical noise , Improve vertical resolution . Usually , In the application of a slow time / Grid setting , There are many data points captured on the screen , At this time, the high-resolution mode has a great impact . Because the acquisition in high-resolution mode will average the data points adjacent to a single trigger point , Therefore, the sampling rate and the bandwidth of the oscilloscope will be reduced .

Average mode

If the signal is periodic or DC , You can use the average mode to reduce the vertical noise of the oscilloscope . The average mode will collect the periodic waveform several times , And generate running average to reduce random noise . High resolution mode will reduce the sampling rate and bandwidth of the signal , The normal average pattern does not . however , Average mode will slow down the waveform update rate , Because it needs to carry out multiple acquisitions to calculate the average value of the waveform , Then it can be displayed on the screen . When you select a large number of averages , The noise reduction effect is more obvious than any of the above methods .

In use for various reasons , It may cause damage to the oscilloscope current probe , Some of the reasons are caused by the product itself , Most of them are caused by improper operation of operators , therefore , In the use of , We should pay special attention to prevention , To avoid damage to the oscilloscope current probe . Through the analysis of various faults of oscilloscope current probe , We can know , The vulnerable parts of this kind of probe are ：

1、 Cable break ;

2、 The magnetic ring of the current probe is broken ;

3、 Magnetic loop coil of current probe ;

4、 A circuit board connected to a current amplifier ;

5、 The appearance of the sliding clip of the current probe is damaged ;

The measures to effectively prevent the damage of oscilloscope current probe include the following ：

1、 How to prevent damage and use ： Avoid falling or exerting too much force when using ;

2、 The magnetic ring coil is thin , Overcurrent will cause the coil to burn ;

3、 Magnetic rings are fragile materials , It is easy to break if it falls to the ground or is used too hard . There is damage / Damaged magnetic ring will cause inaccurate test or no more current measurement ;

4、 Ways to prevent damage ： When using, the current clamp shall be aligned . Be careful , And be careful when pushing the clip ;

5、 The current clip is not aligned , Cracks will make the test inaccurate or unable to measure the current . Be careful , Be careful when pushing the clip ;

6、 Ways to prevent damage ： Do not pull the cable too hard 、 Torsion, etc .

The above is the method and maintenance method for reducing noise of oscilloscope current probe , If you have other problems in use , Welcome to puke Technology www.prbtek.com