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Micsig CP1003/CP503 100MHz/50MHz Current Probe

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Martin72:
With my newly built adapter, the risetime drops to under 750ps (previously around/over 1ns) - I wouldn't have thought that.
But that didn't do anything for the Micsig (pic 57 shown as ref A, both 10mA/div).
Even if you switch to 5mA/div on the Tektronix, the good display is retained (pic58).
If only the amplifier wasn't so huge, I would never think of getting another current clamp.

Martin72:
Hi,

In the next few days I´ll send the probe back, I ´ve made some other measures, they looked ok.
So my verdict:

+Form factor, small builded
+Building quality
+High bandwith
+Degaussing function
+relative low noise
-Measure resolution
-Bandwith linearity
-Price

In my opinion, the last point is the most important.
Even back then I didn't understand why the version with the normal BNC connection costs twice as much.
The current clamp themselves are the same.
So I would say that if the CP1003B cost exactly the same as the non-B version, it would be a good current clamp for the money (if you ignore the non-linearity).
As it is, however, it is definitely overpriced and what is also a pity is its measurement resolution, which only provides usable results from 20mA/div.
Once again, the old Tektronix A6302/AM503 combination has shown that it can't be beaten.
I am still waiting for an affordable alternative, unfortunately the Micsig is not it.

Martin

DaneLaw:

--- Quote from: Martin72 on January 29, 2024, 05:31:15 pm ---Even back then I didn't understand why the version with the normal BNC connection costs twice as much.
The current clamp themselves are the same.
So I would say that if the CP1003B cost exactly the same as the non-B version, it would be a good current clamp for the money (if you ignore the non-linearity).
As it is, however, it is definitely overpriced

--- End quote ---
Wasnt the price-drop on the non-B variant, down to a clearance sale, as it was founded on a dying interface standard, hence Micsig's UPI (Universal Probe interface) and only very few Micsig scopes from a certain production run, that lasted a short while had that UPI interface, as even Micsig own scopes, dropped it.

https://eleshop.eu/micsig-cp1003-current-probe.html

Martin72:
Your link is showing the original price, it was drastically reduced during the sale, to half the price if I remember.

Edit:

It was 41% off:

https://www.eevblog.com/forum/testgear/micsig-cp1003cp503-100mhz50mhz-current-probe/msg5091109/#msg5091109

Martin72:
Today the CP6030 from Siglent arrived for work, let's see how it performs, it's quite a bit more expensive.

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