Products > Test Equipment
Micsig CP1003/CP503 100MHz/50MHz Current Probe
Martin72:
Last pic.
cameronb:
I picked up the CP503 from SAELIG. It looks to require only a 5V/3A supply. Noise is not critical as it drives a buck converter and linear regulator.
Here's what's inside
GDE232E (Arm Cortex).
TI54331 buck converter + AMS1117 provide a clean 3.3V rail for the analog end of things.
OPA4171 probably related to range selection from the DAC on the GDE232E
As far as I can tell, there are no electrical connections to the 3.3V and -5V rails.
I've confirmed all the digital bits are running directly off the 5V rail.
It's probably as easy as passing a USB cable into the housing. I'll try it tonight and report back.
cameronb:
There's definitely a second rail on an unknown-to-me pin. I did, however, get the device and relay up and running off the 3.3V rail. I'm probing out a schematic right now.
I'll have more updates later this week.
amar87:
I tried some more experiment:
First would be with the internal AWG from the scope.
Second with the signal generator where i manually swept up to 100 MHZ, recoded the measurements into a spredsheet, converted to DB and made an ugly bode plot.
if i compare the bode plot from the scope and the one from the spredsheet they don't really look alike. And that dip at 30 Mhz i don't get why it is. Maybe the probe is actually like this ...
idolclub:
--- Quote from: amar87 on January 04, 2024, 09:06:07 pm ---i will conntinue tomorow after reading your posts, i bought the probe from Meilhaus electronic last year probably the price is the same now i waited for it a long time and it also came with a china USB- 230V adapter, and you can't power it from the scope because it needs some more juice than the scope can provide, it also seems that it doesn't want to work with other phone chargers i had arround .
--- End quote ---
The maximum power consumption of CP1003B is about 5V / 800mA, typical 400mA.
CP1003B also can work with Apple or Samsung 5V / 2A charger.
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