Using a lab scope, you can find issues (even intermittent issues) with your battery, starting system or charging system that you can't find any other way.
What do you call INTELLECTUAL AND PRODIGY and SUBSTANTIAL add one more KNOWLEDGEABLE the answer is Justin Miller Loved it From the start to finish tutorial 👌 video 👍 thank you very much helpful information video Take care and have a great Evening PRODIGY Justin Miller From Nick Ayivor from London England UK 🇬🇧
Justin, this has gotta be one of the best thorough explanations of pico tests i have come across but only my opinion. I love using the pico for this stuff but this just kinda put its over the top for me as far as knowledge and pico know how and what can be seen. Great video!!
Justin thank you for the video. Great info and I will definitely go out to my vehicle and capture some data. All your videos are extremely helpful. Thanks for sharing your knowledge. 👍👍👍
It is amazing what can be seen from a quick wave form capture if you have a trained eye. To the layman it looks like chicken scratch but to an expert a wealth of information can be gleamed.
This is called back EMF due to inductions inside the Generator once you turn the key and the load start to draw current the Induction inside the generator to maintain the current flow with try to invert the voltage. Once the inductors are charged there is no fluctuations on the output anymore. Still the ripple are hard to eliminate to 100%.
good video and great way of explining but your pico scope beutiful and good technology i have 2 chanel pico scope 2000 serie i stell learning yuo the best my frien
Loves these video Justin. Question how did you measure almost 1k Amps with a 600a clamp? I didn’t realize it could do that. I added this to my pico favorites on YT nice job brother
Because the starter current on many cars will spike over 600 amps, I created a custom probe, using the same current clamp, but setting the range at 1000 amps. The clamp doesn't have guaranteed accuracy above 600 amps, but I would still rather be off by a couple of amps than have my waveform clipped at 600 amps. On Pico, this is really easy. I just duplicated the 600 amp current probe, then edited the lookup table in the duplicated probe and renamed the probe.
I just did this test with a Pico 2204a and Hantek 650 amp clamp and find that within 5 minutes of the alternator running, the average amperage going into the battery is about -8/-9 amps. The other battery parameters seem good with 9 volt max. pulldown under load, and 12.6 open circuit voltage. You mention at 6:40 that the charge level must be within -5 amps, but I cannot find this specification anywhere else. Would you mind sharing where you found the -5 amp requirement, and do you think its possible that my 2 month old Interstate battery is already starting to fail?
How do I measure the RPM of the starter using the current draw wave form ? you mention the minimum is no less the 200. I put the rulers between 4 humps or spikes and it says less than 200 but the car starts
Hello Otilio! You can't measure starter RPM, but you can measure engine cranking RPM. Remember that one revolution of the crankshaft will result in half as many compression strokes as the number of cylinders. For example, on a four-cylinder engine, there will be two compression strokes in one revolution. If the engine starts before you get enough compression humps, you can just measure the time between two "humps," then multiply it. You are right cranking RPM should be between 200-300.
Great Video, Content quality is top notch. I work on Agricultural Machinery and heavy plant, Do you think the Pico 2204A with the Pico 200/2000 amp clamp will allow me to perform this test effectively or an I better to invest in a higher quality Pico Scope???
If you plan to do this more than once or twice, I would definitely recommend a higher quality Pico. It will pay for itself over and over! You can check out options on CatchaWave.com. Please call or message through the website if you have questions! Good luck with the diagnostics!
Those voltage ripple, is it possible to smoothing it with capacitor? how many F will significantly reduce it? there's so many device marked as "voltage stabilizer" and it's seems like BS, and most the user review sound like placebo
