Fnirsi FNB58 USB tester

[@DB-47]

Hi Danyk thanks for reviewing this tester , I own similar USB tester (Power Z KT002) having similar capabilities but with difference it can go only up to 24V 6A, looks more crude (does not have this fancy plastic cover) and does not have microUSB input. Here are some of my advices how to use it 1) PC link port is used to supply directly 5V to the microcontroller, so when buck/boost regulator cannot feed the chip from other inputs (low voltage on input), it bypasses it. PC link can also filter out own consumption of the tester, so it does not influence measurements and/or it can ground the whole setup if you plug the PC link into grounded source (PC monitor, desktop PC, notebook powered from 3 prong power brick etc.). PC link also can be powered from any 5V DC power supply including another charger. 2) However be careful about one thing. If you connect any input (for instance USB-C), the same voltage will be present on all ports excluding PC link (this one is isolated), so if someone decides to plug this tester to PC, while it measures let's say 20V USB-C PD brick, you can damage the PC by backfeeding 20V via USB-A. 3:40 similar warning displays also my Power Z KT002 (It says: Don't plug-in any devices except the being-triggered guy!!), it basically warns, that during auto enumeration of fast charge protocols, there can be up to maximal voltage output from power supply. So there can be up to 20V with larger USB-C PD power supplies. If your external load can handle anything up to 28V DC, if you can keep it plugged in. 3:57 In order to trigger PD (power delivery) you need to switch on PD COM switch and use USB-C to USB-C cable from power supply as PD can be used only with USB-C cables as it needs separate Configuration Channel (CC) conductor which USB-A does not have. 4:25 You can go to lower voltages below 4V if you manually trigger QC3.0 or PPS protocol, but you need that PC link powered, otherwise tester shuts down. 9:35 This should be resistor for PD COM. Purpose of this resistor is to trick the power supply, that power meter is sink (load). USB-C does not output voltage on VBUS until it detects 5,1 kOhm on CC line. When this switch is off, CC conductor from USB-C IN is bridged directly to USB-C OUT. When PD COM resistor is connected, USB-C power supply should provide 5V and you should be able to use any fast charge protocols. So do not be suprised when you plug in healthy USB-C power supply and cable that unpowered tester stays "dead" or shows 0V when powered from PC link. On the other you should not keep that switch always on as it has one bad downside. If you plug in for instance USB-C power supply for notebook capable of outputing 20V and load negotiates 20V and you unplug the load, there will be still 20V present and if you into USB-C out and/or any other port anything not being able to use 20V, then you might need your "fire extinguisher". There is Lua script to reset this voltage, easier is to keep that switch off, unless you really need to force USB-C power supply to power on Have fun with this tester and I think this will greatly improve your "series" about dodgy and crappy chargers. I hope you will include more USB-C power supplies as they get much more common :) Thanks a lot and have fun with this device ;) I have for instance measured couple of USB-C to USB-C cables. While I found good cable having ESR 90 - 140 mOhm, I found also trash having 450 mOhm and it was actually cable supposed to carry 5A (so this cable would have wasted 11,3W at 5A) :D

[@mab57813]

Just a question about your comment around 3:57 and triggering PD, you mention you need to switch on PD COM switch and use USB-C to USB-C cable. So you could power it from PC link power, then use USB-C from the power supply? I'm just a little confused.

[@DB-47]

@@mab57813 Two things to clarify. PD COM mechanical switch has function, that it fools "power supply" and it thinks FNIRSI tester is actually load (USB-C sink), otherwise power supply does not output voltage (it needs to sense resistors between GND and CC line) and exactly this does that switch. When it is off, load on USB-C OUT has to have this connection (for instance charged device) For connecting to PC or providing external power there is separate microUSB port with "PC" marking

[@XavierGr]

Very helpful comment, thanks. Do you know if I can use this device with a PD/PPS compatible charger to set any custom charger/PPS supported voltage (e.g. any voltage between 3.3 - 21V) and power a non-PD compatible load? For example take an Anker PD 3.1 PPS charger, set the voltage to 4.2V and power a motor or whatever I want. Sort of like a bench power supply where you can set whatever volt/amp setting you want on the output.

[@PatchworxStudios]

​@@XavierGr lil late but you can.

[@Andyfun2010]

Kann der FNB58 mit aktueller Firmware nur 120 Watt? In den Spezifikationen steht maximal 120 Watt! Das schwächste PD3.1 Ladegerät kann 140 Watt! PD3.1 selbst geht bis 240 Watt.

[@ZaneDaMagicPufferDragon]

Pretty slick little USB testing device!!! Lots of awesome functions and easy to use interface too!!!

[@aerofart]

I just received my FNB58 two days ago. Very nice unit. The time scale on the O-Scope can be changed by long-holding the slide switch (left/right).

[@jasejj]

That is a nice little device! A bit expensive but given it is essentially an oscilloscope in a small box that is understandable. I want one to play with!

[@johnshaw359]

FNB48S has the same functions for less money. Same 240 MHz processor as this on the S version. 100 MHz on non S models.

[@TonyMontana-xj3zv]

and cost almoust the same, no thanks, this device is better and newer @@johnshaw359

[@jasonvoorhees3282]

I’m excited to see the utilization of this meter. I wished if you included measuring the resistance of the meter since a lot of usb meters have inexcusable resistance. And also the consuming currents in different situations.

[@cda32]

Yeah they should really have an internal battery for measurements like a multimeter does

[@alasdair4161]

He showed the shunt resistors inside, 10 milliohms total which is very good.

[@jasonvoorhees3282]

Its not that simple. Most cheap poor quality USB meters may also have the same shunt, but things like the resistance of the contacts and the plating of them can make a HUGE difference.

[@jasonvoorhees3282]

@@alasdair4161 One example can be in this video, which a cheap USB meter can be seen interfering with the passing current. kzbin.info/www/bejne/p2mYnIeqp6-kfbc

[@alasdair4161]

@@jasonvoorhees3282 Look closely and it appears to have gold plated pins, and the tracks comprise the full available spread. All the cheaper versions I've tested have had much higher resistance shunts, around 50-100 milliohms usually this high to offset the crappy current amplifiers enormous dead band. This is also what gives them a diminishing non linear resolution at the lower end, and poor single digit resolution.

[@SatyajitRoy2048]

Nice piece of engineering indeed specially the packaging in multipart mechanical design. Really loved it.

[@keithking1985]

FNIRSi are getting a load of good little electronic gadgets on the market lately. And their good to, like thats a great little USB TESTER. And priced cheaper than other makes we know are good for the money we pay for them. Thanks Danny 👍🇮🇪💚🙏🏻

[@mohammadrezamim272]

Nice device, I really liked it And I think that little component seems to be the buzzer not accelerometer.

[@Petertronic]

I bought a few of these type of USB testers a few years ago. The best being the Ruideng. The Uni-T one was terrible! This one looks good, but I would like some accuracy checks though!

[@jstro-hobbytech]

Reminds me of the 48 model only with a nicer form factor and less clunky interface. Much nicer than the 48 but not worth the upgrade. I was looking at the 58 last night. Great review Dany.

[@MrTurboturbine]

I think the accelerometer is the small BGA in the top left.

[@artursmihelsons415]

Cool device! It's better than my old USB tester. Price is high, but affordable, considering all functions implemented. Excellent review and great video!

[@keithking1985]

OK MAD IMPRESSED!! THAT'S THE BEST LITTLE USE TESTER IV SEEN ANYONE DO A REVIEW ON SO FAR. ALL THE CLASS OPTIONS IT HAS ON IT. I MUST GET ONE FOR MYSELF. 🎁😁

[@Alchemetica]

Very neat device. Thanks for showing and reviewing. Season's Greetings Mate.

[@ouyastechshow1118]

i think the component with the hole in it is the beeper and not the accelerometer.

[@hob991]

Happy new year to you and the cat who does all the schematics, looking forward to next years videos.

[@TheSpotify95]

That looks like a really nice USB tester - I wonder if this will feature in any future USB charger videos? Really tempted to get one (or something similar) myself now even if only for the useful features such as checking cable resistance.

[@DiodeGoneWild]

Yes, this will definitely be used to test some USB chargers ;)

[@Hasitier]

Ordered one. If it arrives I will try and check the accuracy against my 6/1/2 digit meter. Let’s see if so much digits make sense. I would like to see the accumulated Ah or Wh on the screen without the need of having to use the battery measurement function. I love to see at a glance how many charge has already gone into a device. Maybe they implement that in a future firmware.

[@NaoPb]

That seems like a nice tester. I might buy it sometime if it's affordable for me.

[@GMartinezBaixauli]

The accelerometer is, in fact the buzzer. Great device.

[@BlackWolf42-]

5 and a half digits. That's pretty precise. Magic stuff!

[@SlaVoy]

Of course it's not that precise, but high resolution is also sometimes useful.

[@revolvingwonder3777]

thanks for the video but its a beeper not a accelerator. was great to see inside and appreciate your efforts.

[@Pulverrostmannen]

10:10 this is more likely the beeper :) The device actually seem very nice

[@JAKOB1977]

Fnirsi certainly seems to have stepped it up lately. Most of their product useally looked some like some mashup frankenstein products that were piggyback riding on other segments products and let a lot to be desired. really not good, and far from polish and well build. but the latest two product I got. FNB58 and their process signal meter SG003A.. they are weirdly nice wellbuild polished products, to a point that Im wondering if Fnirsi is simply purchasing other CN vendors products and putting their label on it, as its a level of very nice products that I havent seen previously from Fnirsi.. Got a thread on EEVblog with the SG003A and testing some of its features. (weirdly diverse for its price with conversion and adj. programs.) overall Im very impressed with these two latest products, not least for the price, when its for my extreme taxed region also holds danish VAT with incl. +25% and shipping. FNB58 bt vers. 36 USD and SG003A 45 USD.. at singles day sale, so people without VAT or not in EU would be way lower..

[@redandgoldfan3869]

glad i found your channel ty for sharing

[@ruimvp]

I think that a review of a measuring device should include the test of the measure accuracy, but good video.

[@Gooberslot]

I wish it came with a USB-C connector instead of USB-A. It would have been easy to use an adapter to convert the C to A if you need to but the other direction doesn't really work.

[@amkp40technology]

*Conclusion is "interesting 😀👍🏻👏🏼❤️".*

[@swiftsilver]

Nice video as usual. I just got my uni t UT658 USB meter in the mail today since my kewesi USB c meter had the port come off the board after 20 uses

[@pepanovak2530]

Zdravím, tohle je hodně zajímavý tester a už nějakou dobu po něm koukám. Zajímala by mne ale jedna věc. Od firmware 0.60 má podporovat power delivery 3.1, jenže zároveň podle specifikace je jen do 28V (PD 3.1 je až do 48V). Takže jak přesně podpora PD 3.1 funguje? Dokáže detekovat u nabíječky a kabelu jen do 28V, nebo umí zjistit plný rozsah do 48V, ale využít (trigger) jen do 28V? V tomhle ohledu by asi byl lepší tester Power-Z KM003C, který je až do 50V a 6A (krátkodobě až 10A), ale zase má jen USB-C konektory, neumí (zatím?) měřit odpor kabelu a je o dost dražší.

[@rectify2003]

Great honest review 👍

[@edgarskarklins3572]

Wow.. I was looking for something like this. There are many cheap USB voltage&current meters. But fewer witch would indicate power delivery modes and even less with all the propietary standards... Sidenote: my big project for the new year is to start my KZbin channel and to build a 2-4 channel bench/lab power supply. With the size of it all would be useful to distinguish it with USB PD port as alternative to regular output. But a lot of learning required. USB PD is already above my knowledge of just building a linear lm317 supply... Would be good to find some materials or open source projects that implement USB PD and if possible property standards as well.

[@pepanovak2530]

How about using whole PD module, e.g. SW3816 or SW3518?

[@ProdigalPorcupine]

All those digits of resolution, but no proper voltage reference! I suppose it looks good, even if it's utterly pointless.😁 I doubt anything after the tenths digit is even real.

[@F16_viper_pilot]

I had the same question. So, I have some precision voltage references that measure down to the hundred thousandths, but getting a proper measurement from voltage references on these type of usb testing devices is problematic. If you don’t use an external power supply to power them, then a voltage reference may not power them up, because the voltage reference is typically not a sufficient current source. And that’s the case with this device, as it won’t even turn on when trying to use the reference to power the tester. So, using an external supply, the device shows about 1.4 millivolts when the source input leads are shorted rather than an expected zero volts. When the reference is supplied, I am seeing that the device is accurate to the second digit. The problem is that the reading doesn’t stabilize on the 4th and 5th digits, as it seems that the voltage displayed is dependent on the power used by the device to perform the processing, so the third digit is the extent you can read, and it is sometimes off by 1 or so. So, in a nutshell, the device seems to be pretty accurate to 2 digits behind the decimal, with about a plus or minus 1.5 millivolt error. Hope that helps.

[@marcin-_]

Fantastic work!

[@doublehelix.]

Thx for the review. Quite nice in that English with czeck accent.

[@DrBeat-zs9eb]

Hope it's better than the last fnirsi product. I bought the wall Scanner and it's garbadge. My outlets are wireless due to the device.

[@trissmerigold7197]

What do you mean? I bought it and it should arrive in a couple of days from now. Isn't it good?

[@DrBeat-zs9eb]

@@trissmerigold7197 no. There Was only one cable I could identify in my Walls. I have mostly drywall and it's completely useless for me.

[@medeirosmatos7933]

Awesome review !

[@d.t.4523]

Keep working. Good luck! 👍

[@liudas5377]

What is BT used for?

[@User-pq2yn]

which is better FSB48 or FSB58?

[@kakugan]

audio is very difficult to understand.

[@dakotajoob126]

Zdravíme DANYKU

[@Waldherz]

How did you take the back thing off so easily? Mine will not move.

[@hardusvd]

When I plug in my powerbank the Unit display error code 02. Does not open the main interface.

[@beatrute2677]

Pretty slick man.

[@jiri3312]

chtěl jsem si jedenu tuhle hračku koupit, ale co bych hlavně u takovéhoto zařízení potřeboval je schopnost limitovat proud do připojeného zařízení. Díky tomu by se pak dal například nabíjet šetrněji mobil, nebo powerbanka. Pokud se dívám dobře do manuálu, tak limitování výstupního proudu tohle udělátko neumí, nebo snad umí?

[@dovklein7721]

Thank you! The BT version does not work with Android 14 (The APK does not support android 14)

[@georgeindestructible]

I wonder how it compares to WTRN U3

[@RoGameReview]

are you fine? you did not post for almost a month now ...

[@drelectronics13]

It's buzzer not sensor ,probably sensor on left near push button

[@electronbox]

Hi Dan, is there any way I can send you something, not a promo but a small piece of test equipment I have surplus that I think you will find useful?

[@DiaconescuAlexandru2024]

10:43 34 degrees Celcius in that room? Is it from all the powerful lighting or is the sensor just miscalibrated? 34 degrees is a lot, especially for winter.

[@DiodeGoneWild]

That's the temperature inside the device, not the room temperature. It heats itself by it's power dissipation.

[@DiaconescuAlexandru2024]

@@DiodeGoneWild oh

[@Enderkruemel]

The thing that you called accelerometer is actualy the buzzer. The real Sensor is on the top left corner, i think...

[@pietskiet3595]

Could you plug this device into a PC and then plug a peripheral in as a load, then look at the scope readings on the data pins? Would be interesting to look at something like a keyboard or mouse...

[@iStandWithRussia]

you'd see a lot of ups and downs but nothing you really could use that isn't described in manuals already... 🤷🏻‍♂️

[@ahmedm9788]

well done

[@fredcrayon]

“ and it’s short and thick.“ 😂

[@farenikerimator5644]

I wait for more dangerous chargers video

[@DiodeGoneWild]

The charger of the oscilloscope immediately caught my attention :D

[@ivankirola2707]

@@DiodeGoneWild I hope you will never replace your old Soviet oscilloscope :).

[@JagMan903]

I just bought this tester and wanted to test a "26800mah" power bank I bought from Amazon. I don't quite understand how to read the results that's right in front of me. Lol. Is it a 9900mAh or 19600mAH capacity? Screen says the following: Battery CAP Calculation Group: 01 Time: 0 days 14:36:41 CAP: 9.92364 Ah NRG: 80.5495 Wh BAT Vol: 3.7V Conv Eff: 90% Results: 19.5931 Ah Thanks!

[@jesuslovesyou5819]

That BEEP though!! 😮

[@JAKOB1977]

If Jesus really loved you, she would have given you the talent of relating to context and noting that you can adjust it to your hearts desire. 6:06 if you need a new Jesus, that really loves you, and can say "me love you longe time" on cue.. holla my way

[@CanizaM]

The font they're using is missing the space character? EverythingLooksVeryWeirdLikeThis

[@DiodeGoneWild]

yes, they're probably not getting the point of spaces between characters, because their native language uses symbols for words...

[@erikr007]

@@DiodeGoneWild Maybe there's a firmware upgrade... see this video at 0.23: kzbin.info/www/bejne/maCom6Oar9qnnrM where "Warning" is centered and there are spaces between the words. At 2:03 the video shows that the "Software Version" is 0.67.

[@ShowXTech]

I wonder if it's called FNB58 because it costs about 58€

[@erikr007]

This video is a test of the oscilloscope feature of the FNB48: kzbin.info/www/bejne/d5evgKiqZ7mVjs0 -- it would nice to see a similar test of the FNB58. There is also a related blog post (see the description).

[@TonyMontana-xj3zv]

7:58 ok, but.. how you want to check the resistance from an "usb-c to usb-c" cable if my power supply has only 1 x usb-c output ?? how should i set the reference point ?? you are showing only the way by a "usb-a to usb-c" cable, PD cables are always "usb-c to usb-c" thats what i want to test. So the only way to set the reference point will be plug in a "good" cable without knowing if it is a good cable ? :D ehhhh

[@kalashnikov_47z]

Hello Please make a video on WZ-6012 Powersupply

[@lmwlmw4468]

Very nice.

[@MrBar_]

that thing you called accelometer is accually piezo buzzer

[@Andyfun2010]

Kann der FNB58 mit aktueller Firmware nur 120 Watt? In den Spezifikationen steht maximal 120 Watt! Das schwächste PD3.1 Ladegerät kann 140 Watt! PD3.1 selbst geht bis 240 Watt.

[@user.A9]

I don't see the link?

[@DiodeGoneWild]

I've just added it ;)

[@rilosvideos877]

It looks massively overloaded with functions for this small device! its nice but i won't need 90+% of it ;-)

[@javanpannadi]

Hello sir., I'm looking for DC power supply design to provide 250 VDC with 1A current Is it possible to build one without conventional Transformer based design... And using SMPS DESIGNS.. PLEASE WOULD YOU GUIDE ME.!!

[@astromancer]

Nice tester. Too bad it's not space compatible.

[@davey2k12]

Bloody hell the English haven't they got a space bar 😂😂

[@DiodeGoneWild]

It probably has to do something with the fact their native language doesn't use latin alphabet...

[@davey2k12]

@@DiodeGoneWild oh that makes sense

testing a tester :O

[@MichaelGiacomelli]

Does anyone make a high side USB current sense meter? These low side devices are fine until you have a ground loop and then they give nonsense measurements since they measure on the ground line.

[@andymouse]

Nice !...cheers.

[@dktr2]

Not a accelerometer, this is buzzer.

[@j7ndominica051]

No space symbol in Chinese.

[@gytax01]

50 bucks and its full of errors. Nice

[@Conservator.]

@@gytax01 What errors?

[@gabest4]

TheyTriedToMitigateItWithCapitalization.

[@kjur18]

That's a buzzer, not accelerometer.

[@DiodeGoneWild]

Well, you're probably right ;).

[@kjur18]

@@DiodeGoneWild I think that accelerometer is one of those two small chips next to usb A output. Probably one next to button.

[@omniyambot9876]

what the hell it got an oscilloscope at data pinss

[@matusekpetr7806]

Ta šedá kostka není akcelerometr, ale piezo. Akcelerometr bylo podle mě to v levým rohu nahoře.

[@widyahong]

its buzzer 😁

[@celsoneves2368]

Good

[@christophertadeo6120]

Endgame... 😁

[@slimeedude]

wow

[@eeezzz9800]

New Sub Here :D

[@sammcj2000]

May I politely ask why you hold onto the end of the words you say? (For example instead of saying "a connector here" you say "a connector hereeeeeee". I'm assuming it's a learned behaviour based on your native language - just wondering it's a common thing? I hope you take no offence from this - none is intended - I'm genuinely interested as I haven't heard this before.

[@1marcelfilms]

I wish i got donated FREE things to review

[@EnnTomi1]

looks like a clone of Witrn U3

[@uawsux]

that thing is 40 bucks even at AliExpress

[@johnshaw359]

It's worth the money, especially if you use USB-C to do power transfers/charging. The 48 is as good but less well resolved and cheaper.

[@AUATUWVSH]

>32F403 beefy stm32 clone!

[@309electronics5]

yep its a pretty powerfull stm clone sadly not much information about it if it maybe has some moe or less features

[@devinpark7296]

Your English voice is funny to me but not to other people.

[@Kali_Kali]

Not only for You 😂

[@Alex-Zone]

His voice is very endearing

[@piconano]

Useless. It doesn't come with a kitchen sink...

[@zeddpilsner4]

i cant watch because you end every sentence with an upward inflection like you are asking a question. i get that English isn't your first language, but maybe you would consider working some annunciation skills

[@Alex-Zone]

I believe you are in the wrong place. We are here for DiodeGoneWild, not 'accurate' PROnunciation. Perhaps you should seek a grammer lesson or two, I recommend you searching out a native Korean from which to learn.