Micsig Oscilloscope Probe CP2100A AC/DC Current Probe 800KHz 10A/100A with Standard BNC Interface

Well made product with reasonable accuracy.Zero adjust worked very well and maintained 0 with no observable drift.I compared measurements against a much more expensive Agilent 1147A current probe and found performance to be very good. Negligibly phase shift in the measurement. Readings came in slightly lower than the Agilent, but were consistent up to 90A, so easy to compensate for this. 100A reading was about 7% lower and the LED started flashing and beeper sounded to indicate I had reached the measurement limit of the probe.I did some simple frequency tests using a function generator driving a 100 turn coil followed by a resistor to ground. The voltage waveform across the resistor was observed on 1 channel of a scope (which will be proportional to the current). The output of the probe was observed on a 2nd channel. Scope gain was adjusted so both channels were equal in amplitude on the display. Several frequencies between 20Hz to 10KHz were observed and amplitudes tracked very well over this range. I did not test further because the inductor - resistor combination was starting to cause the current to roll off. (This was due to my test circuit and had nothing to do with the probe.)I am happy with the quality and performance and am considering purchasing a second.

Low phase shift and not too noisy. Useful at DC and up beyond the audio range. Probes this good were not available anywhere near this price just a few years ago.

Tektronix makes very good very high frequency (i.e. > 1MHz BW probes similar to this for measuring high bandwidth current signals with a DC average. But those probes can cost in excess of $3K USD with the special amplifier. This probe has much lower bandwidth, but for the price it is good enough for many design applications. I give this 5 stars because as of yet have not found as good a clamp on probe for the money that handles 100A peak.

It works great.

Ottime prestazioni.Ottima qualità.