Author Topic: Micsig Current Probe CP2100A/B Tests and Comparing  (Read 44926 times)

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Offline ceut

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #200 on: April 26, 2024, 01:16:26 pm »
I have made a little battery module for it, with a very lowcost powerbank module MH-CD42 and a switch+capacitor at the output: it works great  :-+

Also, some last tests I have made with my Keysight DMM (U1233A)

As the Keysight DMM have many hidden settings, I have activated the "Scale" mode with x10 attenuator=>so it shows the good reading with the Micsig on the input  8)
(The bargraph shows the real input voltage, and the "Scale" mode convert it on the main display, with the scale we choose in the settings)
No need to think at all ;D

All with my RD600P PSU short cutted, and "0" done before the first mesurement.
I have to say that this Micsig is really super accurate  :)
« Last Edit: April 26, 2024, 02:36:51 pm by ceut »
 
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Online Kean

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #201 on: April 27, 2024, 09:21:45 pm »
Apologies, waking up an old post...

Can anybody help translate MicSig's specified Accuracy, identical language for CP2100A & B.  It's entitled "DC accuracy" but then uses "Apk" which I assume means "Amperes Peak", which wouldn't be DC.

DC accuracy (typical)     
3%±50mA (10A)                          {I'm guessing this line is DC, on 10A range, but no equivalent for 100A range}

4%±50mA(100A,500mA~40Apk)  {maybe AC accuracy if Amps peak is <40Amps, up to bandwidth limit  .8 or 2Mhz}

15%(100A,40Apk~100Apk)     {maybe AC accuracy if Amps peak is >40Amps, up to BW  .8 or 2Mhz.  saturation of steel core??  so reads lower than reality}     

Your post is a year old, but I thought I'd reply.

The way I read it has nothing to do with AC current, but DC with possible transients.

DC accuracy (typical)     
3%±50mA (10A)                           {DC accuracy on 10A range}

4%±50mA(100A,500mA~40Apk)  {DC accuracy on 100A range, from 500mA to 40A}

15%(100A,40Apk~100Apk)          {DC accuracy on 100A range, from 40A to 100A}
 

Online Tjuurko

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #202 on: December 08, 2024, 06:16:21 am »
Bode plot of my CP2100A with 153 ns delay compensation.
 

Online Martin72Topic starter

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #203 on: December 08, 2024, 08:03:54 am »
Here is my Bode plot from four years ago.


What does your setup look like?
The probe need to “see” some current, so I wound 10 turns around their core
Then I had set the channel for the generator to 50 ohms, as a kind of load.

Online Martin72Topic starter

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #204 on: December 08, 2024, 10:31:57 am »
Ah, I see that you only display the plot from 30khz and with 0.5dB scaling, so it looks a bit wild.
Use the scaling I used and the plots should be almost identical (except for the phases).

Online Tjuurko

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #205 on: December 12, 2024, 10:27:55 am »
Ah, I see that you only display the plot from 30khz and with 0.5dB scaling, so it looks a bit wild.
Use the scaling I used and the plots should be almost identical (except for the phases).
From DC to 100 kHz there is nothing interesting.
I wanted to see how much it is possible to compensate for the phase error using a delay of 153 ns.
 

Online tautech

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Re: Micsig Current Probe CP2100A/B Tests and Comparing
« Reply #206 on: December 12, 2024, 10:30:00 am »
Ah, I see that you only display the plot from 30khz and with 0.5dB scaling, so it looks a bit wild.
Use the scaling I used and the plots should be almost identical (except for the phases).
From DC to 100 kHz there is nothing interesting.
I wanted to see how much it is possible to compensate for the phase error using a delay of 153 ns.
Channel Skew max values should be in your scopes datasheet.  :popcorn:
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Some stuff seen @ Siglent HQ cannot be shared.
 


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