Goupchn High Voltage Oscilloscope Probe P4100 with Accessory Kit 100MHz 2000V 100:1

Yeah I was surprised at the price too. I got them, and they work great. Nothing like taking your thousands of dollars scope, plugging in a questionable product and hooking it up to mains for the 1st time. What a thrill. ANYWAYS... they work good enough, and I am never going anywhere near1.4kv. Great for hobbies folk and intermediate players. Not the best choice for pros. It gets 5☆☆☆☆☆ .

I got this to use with my DS Touch oscilloscope, which has a setting for a 100x probe. It works very well and I use it on high voltage circuits with no problems.

As a person who has used all manner of scope probes (Tek, HP, Agilent) for decades in a real engineering and repair environment, I can tell you that these are a pleasure to use and are well thought out. The tip hoods are unique in that they very lightly snap on which means they won’t fall off in the middle of a measurement or when the probe is clipped on and hanging…even the expensive ones don’t have snapping hoods and after a while lose the ability to hold on tightly. The tips under the hood are a little longer than most which is a good thing when the circuit point of interest is difficult to get to. The attenuation switches (X1-X10) are decisive which is often not the case with probes in this price range…..they don’t shift during gentle handling which is a big plus. The cables are soft enough that they are easy to maneuver on the bench….some probes use unusually stiff cabling and if you’ve ever had those you know what I mean. The hooks are the proper length and width to get under a component lead and the ground clips have a rubber hood covering most of it so as not to touch other areas of the circuitry. The rubber makes the ground clip a little more difficult to open but that also means it will grip tighter when released onto the chosen ground reference connection. The BNC female connector easily slides onto the scopes BNC male and locks nicely. They also come with 5 pairs of colored rings for probe ID which is nice in the event you buy 2 pairs for a 4 channel scope. We’ll worth the purchase price. My only negative, and it is very minor, but I’ve seen people overly whining about it, is, don’t bother trying to use the provided capacitance adjustment tool, it’s just too big for the job…instead, use a jewelers screwdriver (flat or phillips of the proper size) to make the overshoot/undershoot adjustment, and you’re done.

This works as advertised. I am using this on 2 O'scopes, my desktop and portable scope. After calibration, I verified the use against known waveforms from my test setup. For some and my hobby, these will do.

I bought this to make a single measurement that demanded a differential probe. It worked perfectly, absolutely drop-dead simple to use. I'll hang onto it just in case I need to make another such measurement. But... The case it came in is so overkill it's irritating. It certainly protects the probe and its accessories, but takes up too much space to do so. It needs to be redesigned for much more compact storage. No part of the probe needs to be set in a huge foam block. It could all be stored much more compactly and the case size cut down to half or less volume.

This is a good, cheap 100:1 probe. Capacitance at the tip, as measured at 100kHz with an LCR meter (see photo) was 5.8 pF. Rise time when driven with an 80 ps rise-time source on a 2.5 GHz scope using a 500 MHz-bandwidth high-impedance adapter, and with the probe tip probing the pulse source using a proper probe-tip-to-BNC adapter, was 1.08 ns (see other photo), implying a bandwidth ("0.35" method) of an impressive 324 MHz. Bandwidth measured using a swept sine wave from a 500 MHz arb gen agreed reasonably well with that figure, producing about a 260 MHz 3dB bandwidth. I use this probe for probing ultra-low-power circuits where I want to minimize loading, since at DC the impedance is indeed about 100 Mohm. At higher frequencies, the impedance becomes dominated by the capacitance of the probe and of the scope, which is why the rated voltage also goes down, but that doesn't concern me for my use case. I will say that I have casually checked the performance at 1000 VDC, and nothing went boom. Overall, would buy again.

These are excellent quality probes for the price ! I have not tested the high end of these 200 mhz probes yet but I feel confident they will preform quite well.

I have no clue if these really have a full 200MHz bandwidth, but they work fine for everything I've used them for, and you can't argue with the price. I really like some of the accessories. The spring ground pin thingies are really handy, and the little yellow covers are nice for probing in tight spaces.