High Frequency Active FET Probing DEMONSTRATED 

4:52 "I would not be buying a sold-as-is FET probe off ebay!" Shahriar from the signal path definitely would, and it'd fix itself 2 minutes into the video 😂

4-5 figures!? It better come in a nice box. Interesting video.

The best "cheap-out" scope probe tricks I use with my standard 200Mhz 10x probes are: 1. Touch the scope ground point with your scope probe to see how much “stray” signal your connection method is producing. This can help avoid wasted time chasing the cause of the “bad” signals that are not really there. 2. To see if your scope probe capacitance is screwing with your probed signal, touch the same point with a second probe to see how much it changes your displayed waveform with the doubled probe loading effect. If the displayed waveform changes “too much” then the scope probe capacitance is the most likely cause. You don’t need to monitor the second channel, but it needs to have the ground lead connected to your circuit and be plugged into another scope input (even the external trigger input). 3. To reduce the loading effect of the scope probe capacitance, grab a 1k-Ohm leaded resistor with the scope probe and probe the circuit with the other end of the resistor. This can show a much better representation of the waveform being probed. 4. To reduce “RF” interference on low-level analog signals you are probing, grab a 10k-Ohm resistor with the scope probe and probe the circuit with the other end of the resistor. This will give you a better “BW Limit” function, lower than the scope button for the 20MHz BW limit with only a small additional DC error. 5. For a better understanding of the probing impedance effects in your circuits, use an impedance nomograph to help you estimate impedance ratios for the circuits you are probing (like the ones at www.testecvw.com/carl/CarlMain.htm ) Later, Carl

Gotta love them teeny tiny grabbers! Putting those LEDs on an active probe was a genius move on Agilent's part.

"Beyond the bandwith", sounds like the name of a podcast

My Rigol Probe not only does it have single, diff ended heads , plus 2 upmarket doggy Dave heads one with a ferrite bead 1 cable. It also contains solder a small ruler and a calibration kit.

They can throw in a nice case for the PRICE OF THE PROBE.😂

4 figures! Are tou kidding me?, That's a ripoff 😮

You could mention that there are pretty simple active DIY FET probes which are perfectly capable if you don't need perfect calibration. There are hobbyists selling finished boards in the range of $20. I'm very happy with mine.

so why not put a 1m ohm resistor (or 10k or 100k or whatever) in your homemade probe? what happens then?

It's quite funny if you order 20x N7002A and don't add "mosfet".. purchase department might have some questions.. ^^

Main channel content

Nice... For the price of the cheapest one, you can buy 4 of my current bench oscilloscopes. 🤪🤪

I loved those fish like probes with led eyes at my previous job :)

@Dave OK the DIY Probe behaives differently, but which orobe points to what really happens on the bus?

Does this work ?

1pF is often too much.

I see probe, I hit like.

for measuring the rise time of a random gpio switching off a cheap microcontroller, 1GHz bandwidth might not be enough