Here is a direct link to the official FNIRSI store DMT-99：s.click.aliexpress.com/e/_oChhg1m Carlos, Det and myself also investigated some of the features of the DMT-99 on our livestream - including real time recording of current response while testing LEDs to destruction! ua-cam.com/video/-RxOlgpFn0I/v-deo.html from 01:36:00
For a repairman the most important feature of a meter is that it always works. Therefore I still like meters with a screen that uses little battery power, so I don't need to doubt the battery every time I am measuring. That said, this meter is certainly good enough for most work.
fnirsy is on the right track to have a meter that almost does it all that you do not have to change meters very nice and pretty accurate i give it a 9 out of 10 just because of that last feature the live bargraph thingy you don;t have to grab a scope to see if the bios is getting accessed so yes very nice I think with a few adjustments and improvements that could be the meter we all be waiting for and a must have meter for any one on a low budget
Some interesting features ... more importantly for the channel I thought the display shows very clearly compared to the others. Keep up the great work 👍😀
I give it a 10 out of 10 for having a bright screen. Anyone who's probed around under a car in the dark or a fuse box in a dark basement will find this bright screen better than a weak back screen light that you have to manually switch on. My only concern would be; does it have an auto off feature to preserve the battery?
I bought mine couple of months ago and I like it its pretty accurate what I like about this multimeter is that you can clearly see the numbers on the screen not like my fluke can't really see the numbers in a dark area but to each its own some may like it some mat not happy new year to all
I got one of these (also FREE) and I measured a 10 ohm resistor. The resistance was different in each direction. Then I realized I was holding one lead and just putting the probe on the other. I had created a thermocouple creating a voltage offset. I had never seen this on any other hand held meter. It does happen on my Guildline. As for Chinese software, I'm always saying....... What were they thinking. The scale of the graph is constantly changing giving you no idea what you are seeing. Why can't they let you save it off to a computer? Good, but no cigar! I had hoped you would show me something magical that I might have somehow missed.
Very difficult to see from a video if the meter is legible, to me that is the number one criteria. No good having a meter with all bells and whistles but the read out is small and can not be read. On the video it looked excellent and very clear, sharper than the fluke. Why no buzzer for diode mode is daft.
The display is very clear compared to the Fluke. Why we have this problem with bleeps in diode mode makes no sense to me either. Short Bleep for semiconductor junction, continuous bleep for short. Nothing else makes is of real use for fault finding. Simple.
@13:33 although it displays down to 1mOhm, does it actually measure down to 1mOhm? The 10mOhm & 1mOhm digit always shows zero. It's only the 100mOhm (0.1Ohm) digit that changes when measuring low Ohm resistors.
Nice meter. The thresholds could be used for go, no go on assembly line for non precision, or if calibrated, precision line. Fluke take notice. Thanks, Dickie. Happy new year to you.
With old style meters like the fluke you select the mode on a dial where you can see where you are, where you want to select and all the options available, which is great. Modern button designs go through the list of options sequentially, but i think I'm right in noticing with this one, is not indicating where you are in the list, which gets awkward to go from one setting to another without over shooting if you've forgotten the sequence. I'm with you on 'this is just another multi meter test' .... until you got to the scoping facility ! That's a great addition. The max and min setting could be useful especially with the bleeper indicating out of range. I wonder if it also records the max or min reading as I find that very useful. Its another plus for the Kaiweets KM601 also with its diode beep facility 😊
On firmware V2.1 they fixed the min/max bug but on yours it was readying 21min/22max when you went to test. On V2.0 the min/max wording was backwards but it still functioned correctly. On resistance mode it won't read below .1 ohm even though it displays .000 ohms :( hopefully they put out a firmware update they will allow it to read lower
I think your 1% resistors are a little suspect! I dare say you will get some reasonable readings from the FNIRSI when new but how long will the switches etc last when compared to something like the Fluke which is clearly a few years old. I'm not a fan of these latest generation of multimeters - much prefer more traditional ones. And no short diode bleep !!!!! I just ordered a Brymen with the two bleep facility.
7:20 FYI those are the same stock-standard aliexpress probes that are $2 a pair. A few years ago I bought 10 sets of them. The sharp probes are great and the quality is more than good enough but obviously sharp probes don't last long..... especially with someone who is very heavy-handed and pushes on things 5x harder than necessary (no names mentioned ;-)
Are you using the latest firmware for this multimeter? Latest is V2.1 20231123 1.Fix the BUG in HOLD display in monitoring mode ⒉Fix the menu threshold setting maximum and minimum value display error 3. Fix some English translation errors
Ohh Richard 😳 what did you by 🤔 Did you know how long the battery live? Mhhh, intresting because not a favour to by it 🤷♂️ Dear Richard and all other have a good way in the new year. 🥳👍👍
An interesting meter, just wondering what the battery life would be? This review promted an idea for a project / PCB. Make a DMM tester pcb with several known value resistors, capacitors and diodes, with easily accessible solder pads for the meter probes. Then the tests you performed could be done really quickly. Leave space on the pcb to write the actual values measured with an accurate meter. You could also include a voltage reference and current source, but that would need a battery. I believe you can get voltage references and resistor calibration units, but not combined all in one project/PCB.
@@LearnElectronicsRepair Fair enough, but it is yet another device to charge. I prefer a traditional DMM that is simple, reliable and has a battery that lasts over a year. Call me old fashioned!🙂
@@mikepanchaud1 I'd prefer a common rechargeable and easy to replace battery such as an 18650 to have the best of both worlds. Rechargeable and replaceable.
Hi Dan - yeah, mixed emotions here. We played around with the meter on the TEC livestream, and I'm still not impressed. All these neo-DMMs have loads of functions - burried somewhere in a half-decend menu tree. And of course: none of them have the same navigation. So you learn where-is-what for every freakin' DMM.... when i grab my DMM - the one with the big, clunky Mode-wheel in the middle - I don't need a menu system. I simply select what I wanna measure. Fiddeling around in a menu seems not the best way to operate a DMM (in my opinion). The selling ount of course is the little monitor/recorder thingy. I'd say: "nice try" but catching fast transients works maybe 50%. To see a long-time trend, the display is too small. So this feels like a nice to have, without any real world function. If there was a connection to a PC (Bluetooth anyone at NIRSI???) this could be helpful, but the way it is implemented... well... meh. I'm with Rich when it comes to features - wow. But this again feels like they started with a good idea and then lost track half way. And now, FNIRSI will never offer me a sponsorship after butchering their product :)
@@DetBuildsStuff I agree with you it has nice functions but they are just hit and miss the thoughts are good the execution is less have it simpler to access those functions like the old fassion turn knob and then just 4 buttons to select what you need from the selection you made in that turn knob, and the functions just need a bit more work to be reliable enough to be usefull like i said it is just hit and miss just needs a bit more tweeking and i think that they should listen to you and then have you d a review... if that are smart and really want honest oppions about their product to make it better .... that is what reviews are for !!
He didn't let the disc be written. Mine can't be updated. I will write to the manufacturer about this. There is no mention of the update or the DIY boot logo in the manual. They are incredibly careless.
@@jeanmichel9207 But you wouldn't need LCR at all, if say Fluke included it on their popular models, its a pain having to have a second meter for such a small task.
Capacitors have 4 fault modes: High series resistance, High leakage current, i.e. Low parallel resistance, Open circuit and Short circuit. Inductors tend not to exhibit 3 of these.
@@anthonyshiels9273 You are right, but you also assume multimeters are only used for fault finding, I use them for design work or for matching an unmarked component.
I found it to be unacceptably inaccurate, particularly at low resistances. It also has a bit of a lag before settling on a reading. I wouldn't recommend it.
Through the years i've been consistently finding that these chinese instruments have ALWAYS software issues even on the latest revision, sometimes the issues are not immediately obvious, but with time you will find them for sure. I've bought the Fnirsi DPOX180H and 2 days after i was already regrated of purchasing it, the software is full of problems, but the worse is the "trigger" it almost doesn't work at all, and the vertical calibration is completely wrong, and i'm using the latest software. Another example is the electronic load "east tester et5410+" the software is full of issues and calibration is completely wrong, not to mention the inumerous hardware issues...
Atorch make nice load tester. I have a 600 watt 250 volt and max 40amps at lower voltages. I can connect it to my phone or pc. Pretty accurate too. I haven't notice anything more then .3% out of spec so far
23:52 10MHz isn't really useful for repairs. It really needs to measure up to 100MHz at least since nearly all crystals are higher than 10MHz even on old stuff from the 80's. That's a common mistake with Chinese-made meters they don't really understand what people need or use because it looks like they did not consult with people who repair old stuff. Maybe the next model will be 'the-one'. Oh well, back to the drawing board ;-)
Well, you gave this device a good rating. Didn't you notice that we now live in a world of artificial intelligence ? And that any device that does not provide AI facilities is destined to the trash can ? Every decent manufacturer of a multimeter has to build AI facilities into it, so that you can ask it to answer "what is the problem of the circuit in front of me ?" and you get the correct answer in no time. This "multimeter" does not even posses a speech interface so that it could understand what you are talking to him! Or is it even a female that would anyway misunderstand everythig you tell to her on purpose ? That it identifies a 1 Ohm Resistor as .5 in auto mode is not important in hindsight of its other exorbitant deficiencies. Anyway I wish you an advanced happy new year and that you will learn what is really important features of a multimeter in this coming year 2024. For the time being I will stay with my Unigor 6e.
Here is a direct link to the official FNIRSI store DMT-99：s.click.aliexpress.com/e/_oChhg1m
Carlos, Det and myself also investigated some of the features of the DMT-99 on our livestream - including real time recording of current response while testing LEDs to destruction!
ua-cam.com/video/-RxOlgpFn0I/v-deo.html
from 01:36:00
For a repairman the most important feature of a meter is that it always works. Therefore I still like meters with a screen that uses little battery power, so I don't need to doubt the battery every time I am measuring. That said, this meter is certainly good enough for most work.
I really like their products. I have a meter and a 138 pro oscilloscope. Affordable, updateable, rechargeable. Great for my hobbies.
fnirsy is on the right track to have a meter that almost does it all that you do not have to change meters very nice and pretty accurate i give it a 9 out of 10 just because of that last feature the live bargraph thingy you don;t have to grab a scope to see if the bios is getting accessed so yes very nice I think with a few adjustments and improvements that could be the meter we all be waiting for and a must have meter for any one on a low budget
Nice to see that you are a little bit astonished by this meter. Me also. Thanks for testing. I gone buy one.
happy new years. thank you for all your good videoes
Some interesting features ... more importantly for the channel I thought the display shows very clearly compared to the others. Keep up the great work 👍😀
Good review! I will be getting one. Like the added features. 👍
I give it a 10 out of 10 for having a bright screen. Anyone who's probed around under a car in the dark or a fuse box in a dark basement will find this bright screen better than a weak back screen light that you have to manually switch on.
My only concern would be; does it have an auto off feature to preserve the battery?
I bought mine couple of months ago and I like it its pretty accurate what I like about this multimeter is that you can clearly see the numbers on the screen not like my fluke can't really see the numbers in a dark area but to each its own some may like it some mat not happy new year to all
Bought one of these. NCV is not sensitive to be reliable. The other features work well.
Did the recording mode actually save the data to review later? That might be helpful.
I have just ordered this and the A 683 from Banggood.
About half the price as listed on AliExpress and a little bit cheaper than Amazon.
Richard, that Fluke is absolutely minging! I'll get me coat! 😮
Why not use the aneng multimeter as a 3rd point of reference. that way you can see which ones are closer
I got one of these (also FREE) and I measured a 10 ohm resistor. The resistance was different in each direction. Then I realized I was holding one lead and just putting the probe on the other. I had created a thermocouple creating a voltage offset. I had never seen this on any other hand held meter. It does happen on my Guildline. As for Chinese software, I'm always saying....... What were they thinking. The scale of the graph is constantly changing giving you no idea what you are seeing. Why can't they let you save it off to a computer? Good, but no cigar!
I had hoped you would show me something magical that I might have somehow missed.
looks amazing, but i like my rotating dial selectors.
Very difficult to see from a video if the meter is legible, to me that is the number one criteria. No good having a meter with all bells and whistles but the read out is small and can not be read. On the video it looked excellent and very clear, sharper than the fluke. Why no buzzer for diode mode is daft.
The display is very clear compared to the Fluke. Why we have this problem with bleeps in diode mode makes no sense to me either. Short Bleep for semiconductor junction, continuous bleep for short. Nothing else makes is of real use for fault finding. Simple.
It’s clear to me when watching the video. Do you have your video settings on above 480p?
He could be using magnification.@@shiftctrlhack
@13:33 although it displays down to 1mOhm, does it actually measure down to 1mOhm? The 10mOhm & 1mOhm digit always shows zero. It's only the 100mOhm (0.1Ohm) digit that changes when measuring low Ohm resistors.
Sorry I did not test that - but I will try it on the live stream new years day 1st Jan 17:00 London time @TheElectronicsChannel UA-cam
It only reads .1 ohm not .001 ohm already tried
Nice meter. The thresholds could be used for go, no go on assembly line for non precision, or if calibrated, precision line. Fluke take notice. Thanks, Dickie. Happy new year to you.
With old style meters like the fluke you select the mode on a dial where you can see where you are, where you want to select and all the options available, which is great.
Modern button designs go through the list of options sequentially, but i think I'm right in noticing with this one, is not indicating where you are in the list, which gets awkward to go from one setting to another without over shooting if you've forgotten the sequence.
I'm with you on 'this is just another multi meter test' .... until you got to the scoping facility ! That's a great addition.
The max and min setting could be useful especially with the bleeper indicating out of range.
I wonder if it also records the max or min reading as I find that very useful. Its another plus for the Kaiweets KM601 also with its diode beep facility 😊
Yeah you can record and store up to 8 readings but I didn't try that facility.
I hope one day to see under the hood of this one. 😁 That would be MOV-ellous!
The long read for capacitance could use some kind of indicator - spinney progress bar or something.
I like the monitor, recording and regular modes, but I dislike the auto-range features.
On firmware V2.1 they fixed the min/max bug but on yours it was readying 21min/22max when you went to test. On V2.0 the min/max wording was backwards but it still functioned correctly. On resistance mode it won't read below .1 ohm even though it displays .000 ohms :( hopefully they put out a firmware update they will allow it to read lower
Ótimo video
Obrigado
Nice 😀
I have been looking to replace my Tektronix 465 scope with a FNIRSI DSO storage scope.
I think your 1% resistors are a little suspect! I dare say you will get some reasonable readings from the FNIRSI when new but how long will the switches etc last when compared to something like the Fluke which is clearly a few years old. I'm not a fan of these latest generation of multimeters - much prefer more traditional ones. And no short diode bleep !!!!! I just ordered a Brymen with the two bleep facility.
7:20 FYI those are the same stock-standard aliexpress probes that are $2 a pair. A few years ago I bought 10 sets of them. The sharp probes are great and the quality is more than good enough but obviously sharp probes don't last long..... especially with someone who is very heavy-handed and pushes on things 5x harder than necessary (no names mentioned ;-)
I don't know how he hasn't push a probe threw the board yet. He looks like he is putting is pack into it lol
Are you using the latest firmware for this multimeter?
Latest is
V2.1 20231123
1.Fix the BUG in HOLD display in monitoring mode
⒉Fix the menu threshold setting maximum and minimum value display error
3. Fix some English translation errors
Ohh Richard 😳 what did you by 🤔
Did you know how long the battery live?
Mhhh, intresting because not a favour to by it 🤷♂️
Dear Richard and all other have a good way in the new year. 🥳👍👍
An interesting meter, just wondering what the battery life would be?
This review promted an idea for a project / PCB.
Make a DMM tester pcb with several known value resistors, capacitors and diodes, with easily accessible solder pads for the meter probes. Then the tests you performed could be done really quickly. Leave space on the pcb to write the actual values measured with an accurate meter.
You could also include a voltage reference and current source, but that would need a battery. I believe you can get voltage references and resistor calibration units, but not combined all in one project/PCB.
It's USBC rechargeable, 1500mA/hour. It feels quite hefty for the size so probably has a decent battery.
Good idea mike 😁
@@LearnElectronicsRepair Fair enough, but it is yet another device to charge. I prefer a traditional DMM that is simple, reliable and has a battery that lasts over a year. Call me old fashioned!🙂
@@mikepanchaud1Rechargeable batteries are MUCH better for the Environment.
IGoGreen are a good brand and they arrive pre-charged.
@@mikepanchaud1 I'd prefer a common rechargeable and easy to replace battery such as an 18650 to have the best of both worlds. Rechargeable and replaceable.
you should show it to Det and see what he thinks about that meter !!
Ha good idea he can take a look on the Live stream Monday January 1st. @TheElectronicsChannel 17:00 London Time
sounds like a plan it is a fantastic meter for that price i think and I cant wait till monday for the three stooges 🤣@@LearnElectronicsRepair
Hi Dan - yeah, mixed emotions here. We played around with the meter on the TEC livestream, and I'm still not impressed.
All these neo-DMMs have loads of functions - burried somewhere in a half-decend menu tree. And of course: none of them have the same navigation. So you learn where-is-what for every freakin' DMM.... when i grab my DMM - the one with the big, clunky Mode-wheel in the middle - I don't need a menu system. I simply select what I wanna measure. Fiddeling around in a menu seems not the best way to operate a DMM (in my opinion).
The selling ount of course is the little monitor/recorder thingy. I'd say: "nice try" but catching fast transients works maybe 50%. To see a long-time trend, the display is too small. So this feels like a nice to have, without any real world function. If there was a connection to a PC (Bluetooth anyone at NIRSI???) this could be helpful, but the way it is implemented... well... meh.
I'm with Rich when it comes to features - wow. But this again feels like they started with a good idea and then lost track half way.
And now, FNIRSI will never offer me a sponsorship after butchering their product :)
@@DetBuildsStuff I agree with you it has nice functions but they are just hit and miss the thoughts are good the execution is less have it simpler to access those functions like the old fassion turn knob and then just 4 buttons to select what you need from the selection you made in that turn knob, and the functions just need a bit more work to be reliable enough to be usefull like i said it is just hit and miss just needs a bit more tweeking and i think that they should listen to you and then have you d a review... if that are smart and really want honest oppions about their product to make it better .... that is what reviews are for !!
He didn't let the disc be written. Mine can't be updated. I will write to the manufacturer about this. There is no mention of the update or the DIY boot logo in the manual. They are incredibly careless.
Nice review. On hZ Can it mesure bios
Why do manufactures insist on giving us capacitence measurement WITHOUT inductance? its not that difficult and would be incredibly useful.
Inductance is not a big deal because anyway you need to have a good LCR meter in your lab ,but LOZ and LPF are a must to have
@@jeanmichel9207 But you wouldn't need LCR at all, if say Fluke included it on their popular models, its a pain having to have a second meter for such a small task.
Capacitors have 4 fault modes:
High series resistance,
High leakage current, i.e. Low parallel resistance,
Open circuit and
Short circuit.
Inductors tend not to exhibit 3 of these.
@@jeanmichel9207 LOZ? LPF? I know LPF as low pass filter)
@@anthonyshiels9273 You are right, but you also assume multimeters are only used for fault finding, I use them for design work or for matching an unmarked component.
I found it to be unacceptably inaccurate, particularly at low resistances. It also has a bit of a lag before settling on a reading. I wouldn't recommend it.
You get what you pay for.
Through the years i've been consistently finding that these chinese instruments have ALWAYS software issues even on the latest revision, sometimes the issues are not immediately obvious, but with time you will find them for sure. I've bought the Fnirsi DPOX180H and 2 days after i was already regrated of purchasing it, the software is full of problems, but the worse is the "trigger" it almost doesn't work at all, and the vertical calibration is completely wrong, and i'm using the latest software. Another example is the electronic load "east tester et5410+" the software is full of issues and calibration is completely wrong, not to mention the inumerous hardware issues...
Atorch make nice load tester. I have a 600 watt 250 volt and max 40amps at lower voltages. I can connect it to my phone or pc. Pretty accurate too. I haven't notice anything more then .3% out of spec so far
23:52 10MHz isn't really useful for repairs. It really needs to measure up to 100MHz at least since nearly all crystals are higher than 10MHz even on old stuff from the 80's. That's a common mistake with Chinese-made meters they don't really understand what people need or use because it looks like they did not consult with people who repair old stuff. Maybe the next model will be 'the-one'. Oh well, back to the drawing board ;-)
That multimeter is multi good.
Well, you gave this device a good rating.
Didn't you notice that we now live in a world of artificial intelligence ?
And that any device that does not provide AI facilities is destined to the trash can ?
Every decent manufacturer of a multimeter has to build AI facilities into it,
so that you can ask it to answer "what is the problem of the circuit in front of me ?"
and you get the correct answer in no time.
This "multimeter" does not even posses a speech interface so that it could understand what you are talking to him!
Or is it even a female that would anyway misunderstand everythig you tell to her on purpose ?
That it identifies a 1 Ohm Resistor as .5 in auto mode is not important in hindsight of
its other exorbitant deficiencies.
Anyway I wish you an advanced happy new year and that you will learn what is really important features
of a multimeter in this coming year 2024. For the time being I will stay with my Unigor 6e.
Thanks, but its not accurate enough
On what range and what measurement ? its a 10.000 count meter from a budget end supplier for about 40 quid what did you expect ?