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Micsig CP1003/CP503 100MHz/50MHz Current Probe

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amar87:
I bought a CP1003B. In case someone is interested i could do some experiments and post the results. After all the things i learned from this forum is the least i can do.

Martin72:
Do it please... 8)
Noise, bandwith, accuracy....

amar87:
I am not sure how to measure the noise from it. I could plug it in the scope and change the ranges and see the peak to peak and the RMS values. I would maybe need some help ony hwo to conduct the experiements, i guess out of all of this i could learn a thing or two as well. 

For DC a could compare it with a 6 1/2 multimeter to determine the accuracy.

For AC i have acces to a calibrated AC current source i have to see when i can use it. But it can do 40...60 Hz or someting like that. 

To determine the bandwith i have a RIGOL 100 Mhz DG4102 I guess i could i could short the output into 50R or something and see where the rolloff occurs but i guess with this the onyl thing i could find out is if the  the bandwidth would be under 100 Mhz.

Would also approciate some pointers as i never really qualified a current probe before. Some 'pre-experiment feedback' would be appreciated.

amar87:
So i am not sure if what i did is super correct but here it goes :

Test setup for noise measurement:

- Siglent scope SDS2104X 
- 200 Mhz Bandwidth - this made sense to me since the current probe is 100 Mhz
- Pressed the 'ZERO' button on the probe
- Enabled the measurement function on the scope to show RMS, Mean,   Peak to Peak and the Stdev measurement which i think but not 100% sure is the RMS without the DC component and the RMS contanints the DC component
- no cable through the loop.

This is what i can measure with the probe on the 6A range: 



This is what i can measure on the 30A range:




Test Setup for Accuracy 6 A range :

- same as above + the following:
- DC electronic load
- Fluke 8846A Multimeter (not calibrated)
- DC power supply   





Test Setup for Accuracy 30 A range :

same as 6A range   




I am not sure how to interpret the ±10mA(6A) after the ±1%±10mA(6A) (spec from datasheet) maybe the experts can help here. I guess if i would take out the 10 mA somehow from the readings the probe  could be in spec


Martin72:
Hi,

Here are links to the probes I´ve tested (and other users in the thread):

https://www.eevblog.com/forum/testgear/tek-clone-instrance-icp-5025-current-probe/msg3366960/#msg3366960

In this thread I´ve tested the bandwith of a currentprobe via bodeplot:

https://www.eevblog.com/forum/testgear/micsig-current-probe-cp2100b-tests-and-comparing/msg3072460/#msg3072460

May I ask what you´ve paid for the micsig probe?

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