This GochiFix 3in1 Handheld Oscilloscope was not what I expected! Multimeter Scopemeter Test Review

I was asked to review this new GochiFix LG303 Scopemeter. It's a three-in-one hand held multimeter, signal generator and oscilloscope with12MHZ Bandwidth, and 50Msps High-speed Sampling Rate. Is it any good?
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Gochifix 3in1 Handheld Oscilloscope Amz link: amzn.to/3OW2L4D
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#Gochifix #Oscilloscope #multimeter
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TEST METERS
Aneng AN8009
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KM601
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XC6013L CAPACITOR METER
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TM-902C TEMPERATURE METER
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TL460S Plus PCI_E ANALYZER
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TOOLTOP ET829 SCOPE METER
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MULTIMETER PROBE KIT KET05
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OSCILLOSCOPES
FNIRSI 1014D
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FNIRSI DSO-TC3
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FNIRSI DPOX180H
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BENCH PSU
NPS3010W
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SOLDERING
T12 Station with M8 9501 Handle
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PROS'KIT SS-331H
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SS-331H Spare Parts
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THERMAL CAMERA
Infiray P2 Pro
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MICROSCOPES
Amscope Optical Microscope (copy)
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EEPROM Programming
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CH341A
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CONSUMABLES
NC-559-ASM FLUX
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DESOLDER BRAID (I use size 8045)
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Richard

[@zedcarr6128]

1:50 Here is a list of what the Cat Ratings of multimeters mean: CAT I Electronic Devices Anything from a small circuit board to larger device with high-voltage but low-energy CAT II Single-Phase AC Loads Appliances or portable tools CAT III Three-Phase Distribution Some large building lighting systems and polyphase motors CAT IV Three-Phase Utility Connections or Outdoor Conductors Electrical meters, outdoor connections, any low-voltage and high-energy connection Within these four levels, the IEC has set up transient test guidelines for each category. Measurement Category Working Voltage Transient Voltage Test Source (Impedance) CAT I 150 V 800 V 30 Ohms CAT I 300 V 1500 V 30 Ohms CAT I 600 V 2500 V 30 Ohms CAT I 1000 V 4000 V 30 Ohms CAT II 150 V 1500 V 12 Ohms CAT II 300 V 2500 V 12 Ohms CAT II 600 V 4000 V 12 Ohms CAT II 1000 V 6000 V 12 Ohms CAT III 150 V 2500 V 2 Ohms CAT III 300 V 4000 V 2 Ohms CAT III 600 V 6000 V 2 Ohms CAT III 1000 V 8000 V 2 Ohms CAT IV 150 V 4000 V 2 Ohms CAT IV 300 V 6000 V 2 Ohms CAT IV 600 V 8000 V 2 Ohms CAT IV 1000 V 12000 V 2 Ohms If we extend this to calculate the current for the working and transient voltages, you’ll see that even though two CAT ratings cover the same working voltage, that does NOT mean they are an equal. Measurement Category Working Voltage Transient Voltage Test Source (Impedance) Working Current Transient Current CAT I 150V 800V 30 Ohms 5A 26.6A CAT I 300V 1500V 30 Ohms 10A 50A CAT I 600V 2500V 30 Ohms 20A 83.3A CAT I 1000V 4000V 30 Ohms 33.3A 133.3A CAT II 150V 1500V 12 Ohms 12.5A 125A CAT II 300V 2500V 12 Ohms 25A 208.3A CAT II 600V 4000V 12 Ohms 50A 333.3A CAT II 1000V 6000V 12 Ohms 83.3A 500A CAT III 150V 2500V 2 Ohms 75A 1250A CAT III 300V 4000V 2 Ohms 150A 2000A CAT III 600V 6000V 2 Ohms 300A 3000A CAT III 1000V 8000V 2 Ohms 500A 4000A CAT IV 150V 4000V 2 Ohms 75A 2000A CAT IV 300V 6000V 2 Ohms 150A 3000A CAT IV 600V 8000V 2 Ohms 300A 4000A CAT IV 1000V 12000V 2 Ohms 500A 6000A

[@LearnElectronicsRepair]

Thanks for the indepth information

[@anthonyshiels9273]

I will buy this one IF it survives Carlos and Det tomorrow evening.

[@GiC7]

Thanks

[@qzorn4440]

Great results for a $90 Scope-Meter. 🥰 Thank you.

[@mirceaalicu]

The beep in diode mode readings is very important for us that repair mobile phone boards. Indeed, few multimeters do that. I find the Fluke the best of them all

[@englishrupe01]

The cheap Kaiweets HT118A is one that does have it. Fantastic multimeter, too.

[@joshanderson8938]

24:10 You could switch between AC and DC by pressing the button on the far right.

[@ssalient]

Saw this contraption on another channel as well. It appears to be a Mustool-like scopemeter in a Habotest-like style outer shell. Nothing really to write home about, especially with things around like the Zoyi 702S/703S.

[@Dutch_off_grid_homesteading]

Heya, looks like a very nice multimeter. to bad it doenn't have misterbleep

[@medelec35]

Thank you for the great informative video. I was curious to know why you did not use the REL function when measuring low value resistances to cancel out the resistance of the leads. You did that with the fluke by pressing the button on the selector switch.

[@MickMcMadder]

Noted the same thing too regarding REL.

[@LearnElectronicsRepair]

@@MickMcMadder WIll try it on the livestream later today

[@aurthorthing7403]

I like the fact it does not have scope leads. This would be awesome for working on cars as well.

[@anthonydenn4345]

I think for car diagnostics you'd probably need something that could cope with the inevitable odd drop. I don't think these cheap meters are going to survive in the harsh work environment of car maintenance. Probably burst into ten pieces on the first drop 😆

[@aurthorthing7403]

@@anthonydenn4345you are wrong...

[@anthonyshiels9273]

This video presentation was preceded by an ad for Polinovel Batteries. The sales pitch was very impressive but it would be for an advert. Any chance of a review/teardown of such a device?

[@pault6533]

Captain Koenig’s Multimeter. I like it! Sometimes I don’t want to mess with typical probes. Does the lack of 10x present a limitation?

[@LearnElectronicsRepair]

The fact it uses multimeter probes is a limitation to the scope function, but as I discuss in this video it is also an advantage in some types of repair work when you are interested in go/no-go conditions

[@stephennidds565]

Thank you, I hope to make time for tomorrow now. I am a commercial coffee machine engineer in Cornwall UK. Machines are becoming more electronically controlled. I am always trying to find out more. I see a lot of domestic machines with triac failures. Can they be tested in situ ?

[@LearnElectronicsRepair]

Yeah usually you can 'test' them in circuit as Traic failures are almost always shorted, If one actually went open it will be because it actually exploded which is easy to spot visibly

[@cameradoctor205]

Must have sold well, as the link now says ' not currently available"

[@migsvensurfing6310]

It seems to actually work. Nice for the ocational scope measurement to. Now how long can it run on a charge and how long does the charge take.

[@LearnElectronicsRepair]

I didn't getto test the battery life. It was not fully charged out of the box, not least because this has been in transit for some weeks, but I didn't notice the battery draining significantly while I was reviewing it

[@trondhansen9896]

the battery is 1500 mA charging time depends on your charger. the power consumption is 80mA for the multimeter and 300mA for the scope/signal generator. auto shut of is 15 min,this function can be disabeled.

[@migsvensurfing6310]

@@trondhansen9896Thank you.

[@johnfitzpatrick2469]

G,day Richard. I'm wondering (as a beginner) what range of pf in a capacitor tester to purchase? 🌏🇦🇺

[@LearnElectronicsRepair]

That depends to a fair extent on what sort of work you are intending to do. Personally I have a separate capacitance meter XC6013L CAPACITOR METER and that is what I use in my repair videos. There is an affiliate link in the video description and they are less than €16 on special offer at the moment. You may also want to get an ESR meter. But for a beginner just use a multimeter with built in capacitance range, and if you find it is not capable of measuring capacitors that you need to test (very low values for example) then get a dedicated one. You will still need a multimeter anyway

[@melvilib]

The ramp wave was what I call saw-tooth. does it matter that the ramp does not have sharp drop-off?

[@joshanderson8938]

Yes, at a certain point a the sawtooth wave becomes a sine wave. Inversely, it will become a square wave. Very over simplified I know but there you go.

[@migsvensurfing6310]

At 2 minutes it is the safe levels to not blow up the instrument. The headline needs to be read first.

[@peternotpeter]

Hello Richard, would you also be able to review a 2-in-1 Multimeter / infrared thermal imager at some point? I was looking to purchase one but not sure about the quality. thank you for this review

[@budgetmerch]

I like really flexible silicone test leads and those look very stiff to me. Not keen on meters with capacitance testing, unless that's all it does, but if the price is right it would be usable for some. I am after a new meter but I wouldn't buy that.

[@LearnElectronicsRepair]

This is why I never really try to hard sell anything I review. I'll show some but maybe not all features in real life situations, try it out, give my own opinion on whether I liked it or not and I hope viewers find my reviews balanced and honest. I then leave it up to the viewer to decide if they are interested in the product or not. Some things I am offered to review (I do get these things for free) I decline simply because they are too similar to other products I previously reviewed or I feel they don't have the features I know viewers would want. I get offered a lot of 'generic' consumer electronics for free which I turn down as being 'out of context' for the channel. Also I will not accept any products to review if any pre-conditions (such as what to say about the item) are requested.

[@LFANS2001]

Looks like the name means Go_China_Fix... always weird names from those longitudes, LOL

[@mikX4]

Currently unavailable on Amazon.

[@LearnElectronicsRepair]

I've told them - should have that fixed for tomorrow

[@englishrupe01]

Yep, in stock now.

[@chantalslut]

Got a digital scope. But everytime i drag the good ol' analog scope out. Can't get used to it. Tried.

[@migsvensurfing6310]

Mostly same here but many complex signals needs to be catched, only digital can do that.