Evaluating the P4100 100X 100MHz Oscilloscope Probe

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I wanted to try a few low cost probes to use with the LeCroy 64Xi and decided to try a few of the Hantek products. I received their PP-150 probes and they worked beyond my expectations.
BEST.CHOICES had advertised the Hantek T3100 on Amazon. These are a high voltage 100MHz 100X probe. I ordered 2 of them but they sent shipped these in their place. I contacted Amazon a was provided the following information:
"When something like this happens, we create a replacement but I checked and found that you order was placed with "BEST.CHOICES", a seller on our website, because "BEST.CHOICES's" inventory is constantly changing, we can't replace items sold by them that are fulfilled by Amazon."
They offered to return them free of charge but I opted to test one of them out. This video shows the tests I performed and the end results.

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13 май 2015

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Комментарии : 25

@jugnu361 5 лет назад

whats that scope tip to bnc connector thing ? i am struggling to find one.... Thank You !!

@joesmith-je3tq 5 лет назад

There are cheap ones available but it's not a one size fits all. I think the ones I used with this probe came from LeCroy. I recycled the probe or I could tell you.

@jugnu361 5 лет назад

Thank You !!

@witeshade 7 лет назад

I just picked up two of these.. I wanted some 100x probes so i could comfortably measure the B+ of a tube audio amplifier. Seems like they'll do the job for that just fine. I can't see myself, anytime soon, pushing beyond having to measure something in the 16-25mHz range at a a few volts, and at that point I can just use my 1x or 10x probes anyway. It is good to see where the limit is on them though!

@joesmith-je3tq 7 лет назад

What would you guess that resistor was rated for voltage wise?

@witeshade 7 лет назад

joe smith hrm.. hopefully a bit over 500v haha

@joesmith-je3tq 7 лет назад

It's your equipment.

@joesmith-je3tq 7 лет назад

You saw how much I trusted it.

@witeshade 7 лет назад

joe smith you think it's really that bad? obviously the 2k rating is ridiculous but 25% of that can't be that big.a stretch

@therianet 8 лет назад

nice limiters and input surge protectors, can you share their names so I cant find them

@joesmith-je3tq 8 лет назад

+Henry Herz The Citel parts are a P8AX09. The high speed clamps are custom made.

@dedskin1 8 лет назад

you could open up one techtrnix probe or such , to see if it is the same inside

@joesmith-je3tq 8 лет назад

+Pavle Pavlovic I ended up designing my own. About the same size and good for about 4KV. I have a few videos showing how they were constructed.

@jspencerg 2 года назад

Hello Joe, I recently got a tektronix TDS744A. Scope is still functional at its age. I want to protect scope from my ignorance, et al. I've watched your videos and am studying electronics, but I need to be told how I can make good HV surge protection for scope. I'm not recognizing the details I'd need in your videos. Could you point me in right direction for this? Jeff

@joesmith-je3tq 2 года назад

Repeat after me... I will NEVER EVER connect my scope to ANYTHING HV!!! Repeat that to yourself 1000X. If I need (not want but actually need) to measure something beyond the rating of my probes, I will resist ALL temptation to work around it and buy a proper probe to get the job done!! Repeat that to yourself 1000X. I will not attempt to build a HV probe to try and save a few dollars. Repeat that 1000X. I will make sure that I wear proper ESD straps, work on ESD safe mat. I will not use the 1X probe. I will not be so dumb as to try and measure my AC outlets! Repeat those a few million times. If it doesn't sink in after that, well....

@jspencerg 2 года назад

@joe smith Just say no is the Nancy Reagan line which was never effective solution. I also see no lack of additional protection on your scope, so there. I'm wary of the jolt I don't see coming. I'm careful(I'm the guy still using Fluke 75 from '85). I like the idea of having little box that has known frequency responses that will limit peak voltage if something unexpected happens. I can remove it when time for accurate reading. I like how you make your own capacitors and inductors. Mastering the physics of components is cool.

@joesmith-je3tq 2 года назад

@@jspencerg Politics? Sad. There was no just say no. Buy the right equipment for the job and learn to use your head. That's what will keep you out of trouble.

@diydsolar Год назад

@@joesmith-je3tq hi , in order to measure a 50-60hz sine wave to check some inverters, main grid,... modified or pure sine, armonics, .... Is it good to use a step down transformer ? For example, from 240vac to 24vac. Or it (transformer) will distrub, smooth, .... signal ?

@joesmith-je3tq Год назад

@@diydsolar It depends what you are after. Anything you use will cause some error. Not all transformers will have the same response. Of course, you don't want to apply any DC to a transformer. Following videos show a simple transformer / LEM used to measure AC power with my scope. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-04I7nHA_HxM.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oaR1MgRzvdQ.html

@stefantrethan 9 лет назад

You can solder that together and have it back working in no time ;-) What a piece of crap. I'll check if I can find some broken probes to open up, for reference.

@kaybhee6 5 лет назад

for me this probe was off by 50 percent

@joesmith-je3tq 5 лет назад

50% seems like an odd amount. Was the error frequency dependent? If you watched the video, the one I looked at seems alright.

@paulcohen1555 3 года назад

Difficult to understand what's going on.

@joesmith-je3tq 3 года назад

I think I was just looking at the probe compared with a 10X with a few different waveforms to provide some idea about the frequency response. With it being a 100X proble designed for higher voltages than the 10X, I looked at the derate curve and tried to see if it would meet their claimed numbers using a small RF amplifier. There was a an in-line GDT combined with a 1meg to 50ohm driver and clamp that was used to protect the scope's front end in the event that the probe were to fail during the test. The probe was damaged running well within its ratings so I took it apart and found a couple of 1/4W axial parts. Not what I would expect for a HV probe. I think that sums it up.