Motor Age How2 #12 - Introducing the Low Amp Clamp

How2 shifts gears in this episode, moving on to the cousin of the high amp clamp we've been playing with - the low amp clamp! This tool overs a lot of versatility and can be used for a number of different tests. We'll start off on how the tool works and how to set it up to monitor an ignition current pattern, looking at the uniformity among the cylinders.
There is also a "glitch" noticed - I think I know what it is, but you Snap-on guys need to confirm it for me!
Add your comments and questions in the description below.
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Due to factors beyond the control of Motor Age, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Motor Age magazine (UBM Americas - Automotive Group) assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Motor Age recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Motor Age, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Motor Age magazine or its corporate parent, UBM Americas.

[@josephtucci3666]

Great vid Pete The Amp clamp is the most important tool todays tech should have and understand and USE! IMHO todays tech needs to have his (or her) own scope A vantage pro should do it. The shop should buy the pico. or veres for bigger jobs But I may be wrong Best of luck friend.

[@nickayivor8432]

Good Evening Pete Meier motor age Take care and have a great day Pete Meier Thanks 👍 Tutorial great 👍 👌 👏 From Nick Ayivor from London England UK 🇬🇧

[@Airman..]

Another high quality video Thanks

[@MotorAgeMagazine]

Thanks! Glad you liked it.

[@motorcyclesandridingfree2899]

I believe your exactly right that is where the scope is starting to redraw the picture when you see the blip. If you adjust the sample rate it will go away at least minimize it

[@sollykhan2385]

There are a number of phenomena that we need to reflect on regarding oscilloscopes, image overlay, aliasing ,floating earths among 1 or 2 others, there is an excellent website,and tutorials available esp here in the U.K. called 'TECH TOPICS ' who is an expert on all things related to scopes, BTW, i'm not in any way connected with them, though i have all the material and training books that i bought previously from there. BLESS 😇

[@sandyande]

Pete i have a snap on verus and u were correct it was scope aliasing, to stop it happening either turn on 'PEAK DETECT" OR SHORTEN THE TIMEBASE, cheers sandy

[@chuckdearruda6271]

The minor display “glitch” is definitely not because of aliasing . Aliasing happens when a scope’s sample rate is slow relative to the waveform pattern change. With the relatively slow time base used in this video, aliasing is not an issue. With the trigger set to occur in the center of the horizontal display area you will see that little “glitch” as the scope retriggers. To view a “more normal”, glitch free display, set the scope so that the trigger timing happens on the extreme left edge of the display area.

[@joebagofdoe4762]

I love you for sharing all expertise with us THANK YOU so much its really priceless for a broke old man like myself lol I just have one question if I may ask,Is there a certain way/direction that fused fuse buddy has to go in the fuse reseptacle ? I have just learned from another video that power is only supplied to one side of fuse box inlets !

[@billyr9840]

Nice !

[@jeffmiller6100]

Excellent

[@romanjaspe4172]

Thanks so much teacher

[@padraiggalvin2807]

Thanks for this great video and explaining so well. I have a picoscope and a very similar 60amps amp clamp. just wondering could i use this clamp for relative compression test and see the info on voltage scale.Or will i do damage to the scope or amp clamp???

[@MotorAgeMagazine]

You don't need an amp clamp to perform a relative compression test. Watch this: kzbin.info/www/bejne/iZiaeZmshth7fZo

[@webbtz3591]

This amp clamp is great but they should have made the on.off light much brighter.

[@mr.technician2638]

Sir you did not show to us begginers where to connect the positive and negative probe from the amp clamp itself. Is it the negative probe of current clamp will goes to negative input on scope? And the positive probe of the clamp will also goes to whatsoever channel would like to connect? Hope you will pay attention for my question sir thank you god bless you sir😊

[@usman_oz]

Hi, just wanted to clarify, at around 3:11 where you show the scales, wouldn't it be the other way around from what you mentioned as 1st setting is 10x , meaning 1volt on screen will translate to 100 mA actual current in circuit and 2nd setting (100x) would mean 1volt on screen is 10 mA

[@tgoodm1]

Hello Pete!!! Yesterday I was using my scope yesterday to get some amperage waveforms on a 1996 Jeep Cherokee. My fuel pump waveforms using the a fuse buddy looked weird. I wasn't sure if I had the correct scope settings. Would you be able to look at them? I use the Verus software.

[@MotorAgeMagazine]

tgoodm1 Sure, send a screen capture to [e-mail]

[@sandyande]

ive seen weird scope patterns on my verus on a bmw 3 series, what is was 2 pumps wired into same fuse, the intank pump and the inline pump cheers sandy

[@billyr9840]

Some have two pumps in the same tank !

[@tgoodm1]

Pete...In the Verus guided components area, I noticed that the fuel pump amperage waveforms should look just like the alternator ripple waveforms. Is this just a coincidence? Thanks!!!

[@ronaldamodeo4567]

Pete, maybe you could introduce or simulate a fault into the pattern you are testing. Could it be possible to unplug one the coils and put a resistor in to show a difference in the pattern?

[@MotorAgeMagazine]

Good idea! As the series progresses, and we start taking deeper looks into the diagnosis of these systems, I'll try to make that happen.

[@ronaldamodeo4567]

Thanks, It is good to show the bad with the good. I dont know if you guys have the snap on wave form generator available but if you do that is a great way to practice using your scope something you might want to share.

[@billdickerson2228]

Which amp clamp is that in your video? I'm looking to replace my antique scope that bit the dust recently - have a small hand-held scope in mind but needing a clamp to help diagnose wiper motors, blower motors and other fun stuff for restorations I do.

[@vincebauer4777]

could u zoom out or in to get a closer look not sure but it should kinda look like a chair????

[@MotorAgeMagazine]

We'll be taking a closer look at the current ramp on an individual coil soon. This episode was already getting a little long and I wanted to focus on one common use for the probe - comparing multiple signals to each other, looking for the "odd man out". Thanks for posting your request!

[@tgoodm1]

I think what you are referring to ("...look like a chair") is the voltage waveform. Pete was measuring the amperage waveforms.

[@MotorAgeMagazine]

Vince Bauer Yeah...what he said!

[@joelaplnski5394]

There should be less introduction and more applications, if you are looking at this channel we have a idea what these tools are. Fine tune their use, real world situations. I can appreciate your education on automotive repair, so don't worry so much about dotting the eyes and crossing the tees, let's get down to how to fix it!, thank you 4 your time

[@MotorAgeMagazine]

Thanks for the comment. Just trying to build from a point that includes all of our viewers - new and experienced.

[@salceti]

So Pete, I only have a u scope to work with am I to understand I cannot perform this test then?

[@pitchforkpeasant6219]

@@MotorAgeMagazine and us newbys appreciate it. From basic to complicated. Couldn’t ask for more imo👍👍

[@grasshopperz23]

What's wrong with his arm?

[@MotorAgeMagazine]

???

[@allenk5649]

It's been claimed Satan?

[@Viper81766]

It's called a tat

[@snap-off5383]

Perhaps had a more offensive tattoo removed, or perhaps some other injury.