We were so preoccupied with whether or not we could, we didn't stop to think if we should.

@eFeXuy

3 жыл бұрын

No, you patented it, you packaged it, you slapped it in a plastic lunch box and you sell it! You sell it!

@mr-meek

3 жыл бұрын

*music noises*

@treadmillrepair754

10 ай бұрын

Keysight, Agilent o HP whatever you want to call it make low quality products. I bought ond Agilent oscilloscope paying Us$1800 dollars, I bought one Us$200 dollars cheap scope and works much better in every posible way. Years ago I was working in a company with Us$100k dollars Agilent scopes, all fail every 15 days, totally garbage. Hand multimeters are the same, Fluke is much better. Sorry.

What is this Mul-Tie-Meter you speak of?

One of my favorites: Your U1240B has 10MOhm input impedance in normal DCV mode. You can extend the 1kV input voltage range by measuring voltages with a resistor in series with the DMM. i.e. +10kV --- 90MOhm --- 10MOhm DMM --- 0V this could read up to 10kV, but other values and higher voltages are possible. Better than tongue test, that's for sure.

@piperboy98

3 жыл бұрын

If we are abusing DMMs today, lets replace that 90MOhm resistor with 9 other DMMs in series...

@martinhuber3566

3 жыл бұрын

use the voltage input impedance to measure really small currents

@fredflickinger643

3 жыл бұрын

If only the case and pcb were rated for such high voltage;)

@BruceNitroxpro

3 жыл бұрын

@@LordPrecision , You took the dopey words right out of my mouth... LOL DAMN, is that a really dumb thing to do! BUT IT'S SO SIMPLE! de KQ2E

@BruceNitroxpro

3 жыл бұрын

@@fredflickinger643 , That is what MR/TROLL said in that first comment.

Hold Y to dual-wield got me right in the giggles!

One of my 'top shelf' ideas: you can use the internal high value resistor in the DMM, as a, you guessed it, high value resistor.

These ideas are SO BAD, that I'd only try them if I Won a FREE Keysight Multimeter.

I just use DMM to make LEDs glow. My way of testing LEDs

This was the best video of this year's KU Live so far :-D Well done.

@KeysightLabs

3 жыл бұрын

Thanks!

@marcocacciatore2602

3 жыл бұрын

Definitely!

I'm in need of a new set of jumper wires, now I need to buy a bag of DMMs.

I have used my DMM as a fuse for many projects where I didn't have a fuse or fuse holder handy. Better than setting things on fire and tripping the breaker!

Another "bad" idea: to test a battery for its health in "current measurement" mode - technically short the battery through a DMM. If the measured current is large enough (for this particular kind of battery) - it is good.

Excellent tips 😃, I think most of us short things together in the 10A mode, it's the most used terrible idea.

@abraarsameer9521

2 жыл бұрын

Who else has tried to measure mains voltage with your probe in the 10A socket?

@masteryoda394

2 жыл бұрын

@@abraarsameer9521 That usually means goodbye voltmeter.

@zyeborm

2 жыл бұрын

Sometimes i do it because the probes are really good for... You know... Probing

@masteryoda394

2 жыл бұрын

@@zyeborm Good point, I think everyone does this 😅

@redmist4963

2 жыл бұрын

@@abraarsameer9521 oh god. I did that 2 weeks ago. I didn't intend to do it. I just forgot the probe was at the 10A socket. The moment i put it in i hear a big spark and light comes from the plug extension (did it in my house) and i also hear the safe of the house turn off. I was sure i completely bricked my multimeter (a cheap a$$ 20 euro one). I was shaking from excitement and fear since it was my first time happening to me (I'm a beginner). I quickly open the back panel of my multimeter expecting a mess inside but... it was fine? I check the shunt resistor and the 10A fuse but it hadn't been burned. That puzzled me. I try to measure voltage, current and use the other functionalities of it but they worked fine. The tip of one of my probes was melted tho and the metal part of the socket was too. The most logical reason for this is because the breaker kicked in fast enough for there to be no damage but it still feels strange.

You can use the different bias currents to use a DMM as a crude low current SMU.

@samfedorka5629

3 жыл бұрын

The compliance voltage will also be quite low.

yep, definitely have used a cheap DMM as a fuse box before lol

Used my DMM as a wire more often than I'd like to admit. Pro tip: short your fuse with a thick piece of copper for extra current throughput

@KeysightLabs

3 жыл бұрын

Uhhhh

@SaNjA2659

3 жыл бұрын

@@KeysightLabs Next video: how to use multimeter to discharge capacitors

Hello. What are you think about Hantek hdm3065 multimeter?

I use the current shunt short a LOT , it is very convenient when the wires are far away and you feel lazy.

A handheld DMM is great for rough performance verification of used test gear (e.g., at auction previews). It's a voltage reference, current reference, resistance reference and, with the U1252 and U1282, signal source. It's not a substitute for the home lab, but packs a lot in a portable package.

You never cease to amuse me Daniel! You're like the Electroboom but for Keysight! Next video, I'd like you to measure 100 amps with your N9042B. It doesn't make sense to measure current with a 50Hz to 50GHz bandwidth spectrum analyzer. But you can do it because you can. That's OK if something happens to it; you work there and they'll give you another one lol

I often use an analog multimeter in resistance mode to test LEDs, it can deliver a snall amount of current (like 20-30mA) and depending on the scale you use the LED will burn lol

These videos are great. I was listening to some boring recorded lesson - saw this bad boy come up. Had to click it. Thanks for making my studies more fun.

Also DMM FUSE 10A or 20A... Test leads with crocodile... Not 10A rated continous ... I know ;)

@tchiwam

3 жыл бұрын

Would be fun to see what are the CAT III IV 1000V 600V rating and what happens when you ignore these suggested limits. Probe gauge ratings etc etc...

Excelente equipo

I'v use the dmm in current mode as jumper wires to test some 12v relay in a terminal block...

What, no nano amp range using the 10 meg input resistance in voltage mode?

Is current always constant or only "known" by the device?! I mean, it might vary a bit as long as its value is known at each time when sampling..

Guilty of using the DMM's A range as a jumper... But at least it was low current: basically ground a Chip Select of a PC motherboard and enable its ShadowBIOS to bootstrap it. :P One question, though: I noticed your U1282A is not beeping like a madman when switching to any of the current ranges. Mine runs the beep alert at least five times, regardless if the probes are in the correct A/mA/uA jacks. Is there an option on the setup menu? (BTW, meter has latest FW and was never opened nor "submerged" in water/oil/mist/etc) Sorry for asking this here, but that is one of my major beefs with my 1282A - otherwise, it is one of my go-to meters!

A dmm as a low value CC source can be handy when testing analogue panel meters although a better way is to use diode mode and a series pot.

My career started out with a Simpson 260 multimeter. You learn to be extra careful with probes and settings. I use a Fluke most of the time but I still have a Simpson 260. no battery needed and its a great way to get a reality check on the DMM.

Yes, these tips are god to go! You'll eventually need to check your meter performance using a good known multimeter

I will never forget this and you're just going to have to live with that.

I've totally used diode mode as a current-limited, isolated voltage source (in this case, testing a newly-refurbished amplidyne!).

I use DMM in ammeter mode as a jumper quite often :D

Can keysight make 5 digit clamp meter with high end componets

Yeah, I've used the current setting to bypass a bad starter motor relay. Got me going to the parts shop :)

So I tried this out and a question arose from the results . How do you remove multimeter smoke from the kitchen before my wife gets back ?

Love it!!! I work in Logistics! So cool to see the machines and people at work!

The DMM as a current source is a very good idea, usable during a quick and dirty JFET common source characterization? Or maybe not, don't do it :D (I have to try this ASAP)

I used to poke my friends with a multimeter when I was 10 and measure their resistance. I think I'd tell them I was measuring their cooties.

I use function very offen when I need to reset uC or a module or whatever

Keep in mind: The man making these suggestions sells replacement DMMs

@KeysightLabs

3 жыл бұрын

So how many can I put you down for?

@Miata822

3 жыл бұрын

@@KeysightLabs Wait until I fry one using it as a jumper. You can ship overnight, right?

Those stinking 11 amp Bussman DMM high rupture fuses are like $11 apiece, and we never have them in stock! (I wonder why?)

Have used my DMM as a jumper, did blow the fuse, would do it again. That is, once I replace the fuse.

Wow name/model number of the power supply please Name/model number of the oscilloscope

@KeysightLabs

2 жыл бұрын

Sure thing! Supply is an E36313A: www.keysight.com/us/en/products/dc-power-supplies/bench-power-supplies/e36300-series-triple-output-power-supply-80-160w.html and the scope is DSOX1204G: www.keysight.com/us/en/support/DSOX1204G/oscilloscope-70-100-200-mhz-4-analog-channels-waveform-generator.html

I have a question for you.... please answer me..... If I have lower frequency current around 20cycle per minute does capacitor improve frequency

@KeysightLabs

2 жыл бұрын

Capacitance does have an effect on resonant frequency

Thank you for teaching us :-D The Jumper Wire Feature is great, also already used it ;)

What about DMM's voltmeter as na nano amp meter for mesuring reverse current of rectifying diodes? Just put it in series with a diode. Several mV / 1Mohm = several nA of current... and several mV stands for next to nothing comparing to even single volts of reverse polarity....

Thanks, I hate it.

Thanks for your awesome tips sir.😂

If your DMM has a 10M input resistance, you can set it to 200mV and bingo! you have a 20nA range.

@ikocheratcr

3 жыл бұрын

Multiple DMMs do not have 10M input impedance at low voltages. Quite probably at 200mV range it has > 1G

@colinstamp9053

3 жыл бұрын

@@ikocheratcr Yep. Hence I started my comment with "If". 10M across all voltage ranges isn't universal, but it is very common.

I have done both of those things. Very old DMMs work better as a precision current source because they typically have am much higher compliance voltage. My tip would be that you can use the voltage measurement mode to measure very low values of current with an effective internal shunt resistance of 10 megohms. So for instance one of my meters has a 200 microamp range with a resolution of 100 nanoamps. But in the 200 millivolt range with a resolution of 100 microvolts, it has a range of 20 nanoamps with a resolution of 10 picoamps when measuring current.

I'm use the diode test as a source of voltage when I have the need to simulate a input voltage to a sensor circut of a car as it can be verified on a scanner and the dmm and no magic smoke if you get the wrong pin.

Man,.... head hertz,... a venn diagram of can/can't and should/shouldn't. I love it and that's why it hertz.

good finds.

I see what this is about. You're trying to get people to ruin their test gear so they have to buy more. :)

I use the DMM as jumper much more often than as ammeter. I use the resistance measurement function as voltage source. Now I learned something. I can changed the voltage output via the range

I often short switches with the DMM, this way I can measure how many mAmps a function draws. Last time it was a reset switch (6.2 mA so the fuse was safe^^)

Nice dual wielding there!

You could put thermocouples in the motor and battery of your e-bike and use a DMM as dash board gauge while you tune.

Wow!

I always use my hand held DMM as jumper wire 😁

@KeysightLabs

3 жыл бұрын

not recommended

Get a high-enough voltage DC source, e.g. 100V Connect DMM to it. Null the reading. (click REL) Connect a zener or TVS in series to check the zener voltage. It will show lower because 10uA, but you know what to expect, enough to sort/check :D

I like the ideas in this video

I used 10A current mode for testing PLC inputs, relays or contactor using it as a jumper from 24VDC or 120VAC to PLC input or relay/contactor coil or even test a pilot lamp in a control panel. I think the key there is to make sure the current that will be drawn will not exceed the 10A fuse. For PLC inputs, any digital inputs or even relays and contactor coil, it will never exceed 10A. Typically less than 2A.

If you put two identical DMMs in series across a 100v DC source what would they read ?

@thomasmaughan4798

Жыл бұрын

Each would read 50 volts.

Not gonna lie, I gasped at 2:17

none of them is actually outworldishly unfeasable in case you know what your doing and that it will not kill your equipment

Geeze, it's still valuable info!

@KeysightLabs

3 жыл бұрын

I try :)

can i have one of those scopes

When there's no room in the budget for proper tools, make your own.

Thanx I was doubtful like wait it’s just a multimeter

Now I can't un-see this. 🥵 I'm still shaking from the thought of you almost putting DC voltage straight into the VNA! 😅

@KeysightLabs

3 жыл бұрын

😅

The KULive2 link doesn't work... but KULive1 still does! Is that a typo?

@eggplantcasserole

3 жыл бұрын

Ah... there are weird characters at the end when you click on it. Deleting those works!

@KeysightLabs

3 жыл бұрын

Weird! Working on it

I mean, I used my DMM to measure the frequency of a tesla coil and end up destroying the current measurement circuitry...( it was actually the DMM measurement IC, but somehow it only killed the 10A current measurement)

Now we know how Daniel spent his 420 day.

Some uber cheap DT830 dmm has 1 megaOhm input impedance, works almost like a low-Z (low input impedance) dmm. Many time I got errors on measurements because their loading effects on circuit under testing is 10x more than common 10megaOhm impedance dmm.

I always use my DMM as a jumper wire

damn, you actually guessed how I discharge in-circuit capacitors. :D

@samfedorka5629

3 жыл бұрын

Using the "lo-z" mode on your DMM?

Believe it or not, some of us noobs learnt something we didn't even think to ask.

yup, been there, done that and fried a few fuses in the process... or measuring charger performance on a 12V 18Ah battery: first measuring charge current, then don't replug the wires, only set the DMM on voltage and try to measure voltage across the battery :) if you think line voltage is dangerous? go mess up some batteries!

Placeholder for when I use this efficient ideas.

You'd think a bunch of engineers would have the knowledge and wisdom to restrain and advise others to do the same, but nope

@KeysightLabs

3 жыл бұрын

I mean that's the best summary of this video I've seen yet

Oh, you obscure mind have you . Saying as Yoda .

So basically you can do the Barometer Exam Question, but instead of using a barometer use a (handheld) DMM? en.wikipedia.org/wiki/Barometer_question

I know all these, but I don't know what are you trying to show. thanks for other good videos.

i used my multimeter as a power source and the probes as jumper wire 😁

My tip: Don't use your DMM as a hammer. (Yes I've seen it).

@KeysightLabs

3 жыл бұрын

nooooo

I’ve blown up other equipment by unintentionally using a dmm as a short when intending to measure a voltage... Doh! DMM was fine.

Shorting stuff using the DMM? Been there, done that. Especially when you need to temporarily short something on a PCB and have a nice set of sharp DMM test leads (like the 34138A). Yeah... I guess I could get myself one of those female to female banana jack adapters.

You can also "misuse" an oscilloscope as a fast, low voltage voltmeter.

@thomasmaughan4798

Жыл бұрын

My Keysight DSOX1202G has an actual digital voltmeter embedded and not just using the 8 bit ADC to sort of measure voltage. It's not super sophisticated but a lot more precise than the 256 count of the 8 bit ADC.

I always use my multimeter in resistance/continuity mode to test LEDs because it doesn't have a diode check function

@KeysightLabs

3 жыл бұрын

That's a clever workaround!

A spiky current waveform? DMM shunt resistor and oscilloscope (just fix the DMM current range)

Perhaps you can try using a Wheatstone bridge to measure the impedance of the powergrid😱

Impressive dual-wield. But srsly, what the hell was this xD Love you guys for having humor! Wish I could affort one of your Scopes to support you :D

Usually, I'm using multimeter in diode mode as power source to test unknown clear LED's color an verify, that this LED is working and polarity is correct.. Basically, same as testing other n-p/p-n device, that's mean's no harm to DMM.. Few times I used multimeter as fuse.. But in my case, I want, not only connect two terminals, but measure current too.. When cars fuel pump stops, I removed relay, and touched with DMM probes in current mode to the relay terminal.. In field this method work as a charm to understand what's going on! 😂 Basically, this needs to be done smart, otherwise, something can be shortened out through DMM.. 😂

I use dmm for measuring very high resistant stuff, kinda of insulation tester. You need a known stable voltage source, like 9V battery or simple 1kv dc voltage source; current requirement is very low. Put it in series with dmm and things that you measure and mathematically calculate the high resistance measured based on your 10megaOhm impedance dmm voltage reading on basis of volatge divider resistor. Similar to what nS (nanoSiemens) range did on dmm. Other things I learn from MarcoReps is to read capacitor leakage current, similar to measurement as above but you calculate by I=V/R, where V ia your voltage reading & R is your dmm impedance. Try to get dmm with stable (known of measured by othe dmm to make sure) 10 MegOhm impedance, some cheap chinese dmm will auto high impedance on low voltage range.

@budi0251

3 жыл бұрын

Other things, some cheap chinese dmm (4000 or 6000 counts) can do up to 3.999A or 5.999A dc current measurement before autoranging on 10milliOhm shunt, that means your dmm can measure voltage down to 10uVolt, which may or may not available to you on normal voltage measurement selection. I'm thinking of removing those shunt and use those dmm for very low voltage measurement, surely at equivalent of 10Amps you'd only be able to measure 100mV (or 39.99mV or 59.99mv before autoranging). Should you need to measure high current then use known proper external shunt. Now I wonder if that's possible to measure AC signal in the order of 50-100uV (or even lower) as most DMM will struggle on mVAC range to measure that ? Common wisdom is just to use proper AC millivolt meter with range capability of your needs (10uV resolution/sensitivity?).

Wish I had a physics teacher like you, when I was young...

One time I used DMM in current mode as jumper wire while testing high voltage LEDs. So I have one lead directly from mains and another from DMM in my hands (with 220V AC on it) and bunch of LEDs lied down on big heatsink. As a bonus I was have current measurements and fuse. Don't do this at home.

@KeysightLabs

3 жыл бұрын

Yikes!

This is the not to see video XD super fun

i use most of these as hacks in one form or another daily just for lack of equipment/supplies lol! there's also the horrrrrible idea of harvesting less essential parts that can be useful for fixes, while still maintaining functionality. eg: the 9v battery socket from the multimeter to whip up a makeshift soldering iron and just solder the battery to the board with the remaining wires and said soldering iron...i could go on..