Hi Welcome to the Eev blog an Electronics Engineering Video Blog of interest to anyone involved in Electronics Design. I'm your host Dave Jones Hi It's product review time and we've got another LCR meter. This one is the BK Precision 879b brand Spanking new model! Let's check it out And here it is now. you may notice the similarity between this BK Precision 879b and many other LCR meters on the market.

Now now that's not a coincidence. It's because their original Heritage is from a company called Escort. Uh, now. They designed and manufactured a lot of test instruments which were rebadged not only under the Escort brand, but were rebadged under many different names, including BK Precision and Agilant, as well as many other, uh, smaller names.

So there's no uh' mistaking. This looks pretty much identical to the Agilant, Uh unit and quite a few others you can buy out there. But uh, Agilant actually bought out Escort a couple of years ago. So what that meant was that while the, um, the other manufacturers could still sell this meter, they still had rights to sell it.

Um, BK Precision decided that no, we'll go design our own and redo it from scratch. So although it still looks similar, this is a completely new design inside. And of course, LCR meters aren't that exciting. What we really care about is what's inside.

So you know what we say here at the Eev blog. Don't turn it on, take it apart, and to get the unit open, there are two screws up the top here. Somewhat Disappointingly, they aren't uh, metal threaded inserts. they're just self tappers.

But there's uh, one extra screw under here for the metal. But this is a threaded metal insert for the battery compartment. So let's lift it off and take a look. Tada Here it is, and it's actually very, very nice.

Let's check it out. Let's take a general look around the unit. There's two main devices up here, which we'll take a look at. Uh, there's some very interesting looking uh headers over here, presumably for in circuit programming, which we'll check out.

You got three input terminals down here. one's the guard terminal. One's positive and negative: You got the 9volt battery. uh, terminals straight on here like this I Love those.

Um, and so there's no wiring at all in this unit. it's just a single board construction. Now, they've got the USB connector down the bottom here. Now that USB connector has got to connect to these devices up the top.

So why it's right down there? A high-speed USB serial interface right down in the bottom corner near the terminal. In this case, it's the positive terminal over there. Why they put it down there instead of up here Somewhere right next to the devices is beyond me. Um, that just seems like a crazy layout decision.

I'm not sure what they're thinking there, but anyway, the only adjustment in the whole thing is a nice 10 or 20 turn. uh, pot down here as you can see and it looks like that's the only adjustment at all. There's a few few missing components down around here. Here's the 12volt input jack.

This is obviously the um, the DC to DC converter input uh circuitry there for the external power supply. Um, and these. take a look at these Dodes down here. they're actually the incorrect footprint.

so they've designed it for a bigger, um, a bigger footprint like these. But they've decided just to use these uh M packages. and we have a large spring terminal here which goes up to the shielding on the back of the case, so the shielding sort of wraps around the sides. It looks very nice.

No problems there at all. Now the input circuitry here. there is actually a fuse. I There was I was expecting like a glass fuse like most other LCR meters has, but there it is.

There's um, F200 down there. so that's actually some sort of, um, some sort of Poly switch or something like that. Uh, so it does indicate on the display if the fuse is blowing, but that's obviously not easy to change if if you do, um, overload the inputs and you blow the Uh fuse. Uh, well, you may not be able to replace that so I'm not sure if it is a Poly switch though.

it'll be a self-resetting Poly switch, so that would be good. but if it's just one of those surface mount fuses, then that's not so good. cuz that suck is not going to be easy to change at all unless you got the gear to do it. And if we look at some of the other circuitry here, there's you can't read those Uh numbers, but there's lots of uh, discreet up amps, lots of 4,000 series, um, analog Seos stuff.

As is very typical with these uh class of LCR meters, they use a lot of. They actually require quite a fair bit of discreet circuitry and I like it. It's really quite a neat Uh layout. It's no problems whatsoever.

I Don't see any bodgy uh components at all. It really looks quite nice now. I Got one of the first meters which rolled off the new production line for this model and as you can see, it's already up to version 2.2 uh, copyright 2010. So they've gone through quite a few revisions before.

They actually, uh, got the product out the door which is a sign that they've actually refined this thing and it works really well. Now these are the two main devices up here and it's got two crystals looks like a 32 khz watch crystal down here, and a standard um Crystal up here which is uh, 6.4 MHz I think yeah, 6.4 MHz And these two devices. Interestingly I didn't expect to see an Ala Max 2 device and check it out there if you can read the number on there. So and this looks like a standard alterior JTAG header.

So what I did is I Hooked this up to my Uh to a JTAG programming interface in Alum designer and bingo there it is. It popped up. As you can see, it's the Uh Max 2 um EPM 240t 100 Isn CP Cpld I like it. So obviously this thing is going to be quite hackable.

You can reprogram the J tag in this thing. You can read it out. You can make mods if you want. Now this micro here it's a TI I presume it's a micro.

it's a Ti1 and I don't recognize the part number at all I'll have to. Yeah, you should be able to read that, but off hand I don't recognize it. so I have to look that one up and see what it is. but uh, why they what the second? uh CLD there is doing the alterior one I don't know.

but obviously they deem that. uh, they require two devices. So obviously this thing is quite hackable and quite powerful. This is obviously another Um serial JTAG or in circuit serial programming SL debug header so you can do some great stuff with this.

I like it. And here's the inut: uh Jacks they're quite unusual. At first I thought I really liked them. they they sort of looked really good and I had no issues with them.

They got a a a tiny screw down here but they're molded inside here so you unscrew them. They got a single piece of folder metal which does the blade input terminal. but look there's another tiny piece of folded metal poking out which is then solded onto the board. So the reason I don't like it is because if you insert something into if you insert a component continuously into blade, you might you can see that blade actually moving and that is maybe could eventually wear out.

um that solder joint or break it off or crack the joint or something like that. So I don't know, maybe uh BK uh BK Precision have done their research on that and tested it thoroughly. Um, but I don't know I'm just I would have liked to have seen a different Uh interface either discrete wiring going over or something like that, so not entirely trustworthy of that. But I'll give them the benefit of the doubt um through long-term testing.

Just as a very quick reference, here is the uh old Escort design and as you can see it's it's a quite, uh, lower Tech it's um, it uses older devices, there's no CLD up there and uh no USB uh interface either. and there's lots of discreet circuitry up there. and as you can see the device down here if you can read it is it's going to say escort on it. There you go Escort! So overall I really love the new redesigned circuitry that really completely redone it from the ground up.

It's a nice layout, it uses nice, uh, modern components and surface mount caps. I Love it. Big thumbs up! So what do you get in the box with the 879? Well, let's check it out. Tada We get a manual which is pretty good.

We'll take a look at that later. I Don't mind that at all. We get the meter. Beauty With an installed battery, we get a plug pack.

um, a real oldfashioned Transformer plug pack which is uh, 12 Vols 150 milliamps but it's 120 volt. Um, so I didn't get the one for the Australian Market presumably. but you get the plug pack which is great and you get a mini USB um interface cable. but that's it.

There's no software. Uh, you download the software off the internet, which we'll do later, but that's it. Bit disappointed. Why couldn't they throw in the uh, the tweezers? You can get the tweezers for $26 extra.

They could have thrown that in that would have been beautiful. and it's $299 Uh, us. So it pretty much puts this meter probably probably smack in the middle of the LCR meters on the market. There is a lower model to this to the 878b and it pretty much doesn't have ESR and a bunch of other useful stuff.

And it's not that much. uh, cheaper. So I'd recommend going spring in if you're going to get this model for the top of the line 879b. So what are the headline specs? Well, they've improved this model over the existing Escort design in that the primary display is now 40,000 counts which the old one was 20,000 counts get twice the number of counts which is really useful.

It means you can get uh, a greater resolution for a over a more useful range. So if you measure a 39, um 39 nanopar capacitor, you'll get an extra digital resolution over a 2,000 count meter which is awesome. Now um, the secondary display is 10,000 uh count which is still pretty darn good. Um, it's got USB interface which will go into um it measures up to 10 khz which are the cheaper LCR meters won't so that's real Handy and the um the headline specs are 0.5 base specs 0.5% plus one count so it's really super duper accurate specs better than the more expensive ones on the market which will have they'll be.

5% too but they'll have a higher plus count. I Was a little bit disappointed that it didn't come with a calibration certificate. That would have been really nice. For 300 bucks you get into the borderline where you might expect a calibration certificate, but you do get a 3year warranty with it, which is pretty awesome.

Let's take a look at the unit overall here now. It's a really nice fit in the hand. It's got the nice curved design on it. it's the original Escort uh case basically but and it still feels really nice.

It's got the rubber uh holster around the side and it's got a very nice tilting bail on it. It's uh, can sit well, it sits like that and it really is quite stable. And yes, you can push the buttons without the thing falling over and it does actually I'm not sure if this is a feature, but it does actually snap back even further to give you a much shallower uh, angle like that. I'm not sure if it's supposed to do that, but it does.

and uh, the battery compartment as I said in the back so you can access it. Uh, which means that that you don't break the calibration seal cuz when you get these things Cali calibrated by a professional lab, they'll typically put a cow seal on here and you want to be able to change the battery without doing that. and as you can see, it's got some some uh, polarizing hooks in some polarizing uh tabs in there which allow you to only insert the battery the correct way although you can actually put it in, but you can't close the back on it like that. so it really only lets you put in the battery one way, which is great.

It's a nice design and I like it. It feels really feels really quite solid. I Haven't put the extra uh screw in there yet for the Uh for the um Uh battery cover, but it really feels like a nice solid unit and it could survive the noock in a general lab. On the side here.

Excellent! We've got a standard Mini USB connector I Love it! It's not optically isolated so that is one disadvantage of this. So if you if you do require Optical isolation on your LCR meter or your test gear in general in a lab, this one is not going to be suitable for you. but it has a great Advantage high-speed USB Interface Standard connector I Love it! Um, the input terminals down here. It's got a guard input terminal which you may not get on the lower cost instruments which is great which allows you extra shielding when you make up custom test leads to go off to a a production test jig or something like that.

It's got the blade uh input terminals up here for the through hole components and it's got standard leads down here and I forgot when I did the unboxing I forgot you got the Uh leads as well. You got the standard clip leads that uh plug in here. They have a nice, not an entirely um, really tight fit, but a reasonable fit nonetheless. You don't get any guard terminal because that cable because that's only for custom leads, but uh, these are quite reasonable alligator clips.

There's an extra nice touch they've put up here which is this display guard it's designed for when that you put the meter flat on the bench if it lands or Falls flat and gets dragged across it, doesn't scratch the display screen and let's give that a try. Shall We There It Is As you can see under there like that it uh is the display is well and truly not touching the bench so it's a rather nice design. I Like it. We'll power up the display and see what we get if we hold down the power button here.

as you can see, it tells us uh, firmware Version 2.0 and it's the Model 879b. Quite neat and if we have a look at the display up here as you can see, we've got a primary display. As I said, 40,000 counts down here with a 10,000 count secondry display up here and they correspond with the primary display button down here. Primary functionality: Uh, you can measure inductance, capacitance, resistance, and impedance and the secondary display can uh switch between dissipation Factor Quality Factor uh phase angle or ESR which is pretty much full-fledged functionality for an LCR meter such as this.

Let's try the standard: GSM Mobile Phone Interference Test now: I'm measuring a standard cap here at just over 100 nanofarads and I've got my phone here and as you can see, it's calling the uh thing as you can probably hear the interference the GSM interference through the microphone there I'm sure you can. um I don't even need to play back that I Know it's going to interfere, but look, it doesn't change the meter at all, even if you put it right over the cap. Nothing. So it's really, really is quite nice.

It's totally immune to GM interference I like it I Must say I'm not a huge fan of this display because the uh, the contrast isn't that great and the segments are really quite thin. Um, and it's It's quite glary, but that's no different to other. um, this is pretty extreme here in the lab. this uh, glare which is seeing there, but that's not much to that's not much different to the other LCR meters I've got.

but yeah, I'm not a huge fan of the display, but it's certainly more than adequate. And of course, it's got all the Um indications and functionality you require with the dual display and everything else, so there's no problems there. It's just the readability side of things. Now there one thing I really like with this is the relative mode.

Sure, all all LCR meters have got a relative mode on them. They have to. um, it's a vital feature, but this one as you can see, I'm measuring 100 nanofarads here which is a reasonably uh High capacitance in the scheme of things. and if I press the relative button here as you can see it all it continues to Auto Range it's jump down to you know, three PE around into the peaka farad range down there.

It's awesome. Um other LCR meters I've got will will not Auto rain. so once you hit the relative function they will stick on that one manual range so that could be really really useful. One of the awesome features of this meter is that can go down to 100 microohms resolution or .1 milliohms.

Let's check it out. I've got the leads here. let's short them together. It's not terribly Quick Auto ranging.

but I wouldn't say it's slow either. There it is 0.06 ohms and if we relative that we hit the relative function there you go. Look at that. Fantastic fantastic and that's reasonably stable.

considering we're using the alligator clips and you wiggle the leads around here, that's pretty darn impressive. Super fast Auto ranging. This is a 2200 microfarad cap. Okay, let's check it out.

it's on Paa Farad Range Okay, it's Auto ranging. Plug it in bang, it jumps straight to 2.2 Mads awesome and as you can see the the ESR resolution is excellent and of course the secondary functionality up here goes from ESR through to Quality Factor through to dissipation factor and phase angle as well. And just to make sure it's not lyed to us at 120 htz. Uh I've got it in parallel measurement mode here and I'm measuring 2.15 W 2.57 It's jumping around a bit mill farads on this 2200 microfarad capacitor down here, but let's see what we get when we go to impedance mode now at 120 HZ uh 2 * > * F 120 HZ * 2.15 Let's call it 4.

Mads okay, invert that and we should get a uh, an impedance at 120 Herz of1 1657 Ohms, let's try it. There you go16 oh three which isn't too bad. That's certainly with intolerance. And it's got a backlight too.

Let's try it out. You hold down this button here and bingo backlight comes on. It's nice and even let me, uh, turn the lights down there a little bit and it's pretty good. I like it nice even backlight.

And if you go into the utility menu here by holding it down, you can see that you can turn the beep off and on and you can turn the auto power off. Uh, 5 minutes, 15 minutes, 30 minutes, 60 Minutes or off and that's really handy I Like that and this mode here allows you to store the power up setting. So if you want it to power up at a specific frequency with a specific secondary display and uh, in a specific measurement mode, you can do that, which is quite handy. It's a bit annoying having to go through here I'd probably uh, prefer it to do that when you do the power Onof button, but that's just the personal preference, but this is quite flexible and it's also got a calibration mode down here.

If you hold down this button, you can do open and short calibration compensation. So in this case I'm measuring resistance and I've got uh, my lead shorted out. So I calibrate that and it takes out the test leads effectively. There's a bit of Tolerance there cuz there's a bit of play in the contacts in these crocodile.

Clips but that's a useful feature. There's one real Handy feature which is the tolerance mode down here. Now it allows you to measure Uh components relative to a reference component. So let's say this capacitor down here is our reference Uh component.

It's 100 06 Narad, but it doesn't actually matter what it is. You press tolerance and Bingo! Now we can sort up here. It shows the tolerance that we're out. So let's take some other capacitors which are the same value but they're going to have this one is 0.15% uh, higher than the reference one.

This one is 1.85% different as you can see higher and this one here is 0.34% difference and you can enter different modes. You've got 1% uh, 5% 10% and 20% modes as well and as you can see, I got it set to 1% tolerance mode here and let's deliberately put in a cap that's out of Tolerance and it will do several beeps instead of the single beep which you'll get with one that's within range. Great if you take a quick look here at the manual for for the automatic Uh fuse detection we looked at. When we open this unit it does tell you error fuse and it basically says it doesn't say it's replaceable, it just says contact Bnk uh Precision for assistance So it looks like that is probably a an SMD fuse in there and not a resettable uh Poly switch.

Now if you take a look at the manual here for the capacitance range at 10 khz, there it is. These are all the different ranges at this particular frequency and the measurement mode series for all of them. but it says if you go down here to parallel mode it has a 40 paa farad range which with with a 40,000 count meter is phenomenal. It gives you 0.01 P farads or one fto farad resolution which is awesome but that's what it claims in the manual.

But if you go here and you go into uh the capacitance mode as you can see p farads 10 khz we're in parallel mode Bingo it's not. It's uh not 40 paarat. it's only 400 paa farads. So the Manual's lying.

Where is the 40 paarat mode and the same thing with the inductance range 10 khz down here in series mode Let's have a look at the actual meter it says it should do a 40 micro Henry range. There it is. But let's go down here and put it in Series parallel Mode series mode 10 khz Inductance We're not. We've only got 400 micro Henry's manuals line again and let's take look at the specs in a bit more detail now as you can see that they all LCR meters all good ones will give you a uh, an accuracy table like this for each different range of measurement value.

This happens with the inductance versus frequency, so they'll give you a whole bunch of different Uh tables for all the different frequencies for all the ranges. And this is, uh, not surprising that the best accuracy is typically obtained in the middle around the middle ranges here. So as you can see it's. 5% plusus one count which is awesome.

Absolutely awesome for a 40,000 Uh count instrument I Love it! Um, but as you can see it starts getting 7% plus 2 1.5% plus 3 up here 2.8% down here for 4 mli, Henri and so forth and so on for all the different Uh ranges. So if we go to the capacitance, um over here he here's capacitance at 100 Herz 120 Hertz and as you can see uh, 0.5 % plus - 1 count but up in 20 20 mads which is a huge amount of capacitance. We're talking 8% plus - 3 or 2 and 1 half% down here and tells you which mode you got to use series or parallel so a bit of a trap the young players uh, specifications on LCR meters. You can't just say oh, it's 0.5% accurate.

You really have to talk about the range and the frequency and the mode that you're actually using. Now there's one thing I just cannot figure out now. I've even read the manual on this. Okay, I have to actually go to the manual which is the Uh recording function or the min max.

uh average functionality. Now to show this that: I don't know what the hell's going on here I've got the original escort design here. the Agilant SL Escort design. Basically the same meter.

okay, essentially like functionality and um, you know, breeding and all. That sort of thing is exactly the same. This one is derived from this. so the functionality you'd think would be very similar.

and and if you read the manual, it's exactly what it should be. Now if I enter let's try the BK precision I Enter Max average Min mode there it is across there and I plug in a cap. Okay, no problems, it recorded I plug in another one it recorded plug in another one it recorded okay and I hit the record function. Nothing.

Absolutely it stays in min Max average mode now I can actually get it to do this. Watch this I'll try it again. Seems a bit temperamental, but if I try it there we go. It's taken a recording.

Let's try it again. It's taking another recording. Let's try another capacitor and it's taking a recording. Now if we hit the record mode, there we go.

Max Okay, 100.1 It's not changing at all. It has not recorded those values whatsoever. Now let's take a look at the Agilant over here. Let's turn this one off.

Sorry. Well, let's switch into min max average mode and let's do it Okay Bang, it's recorded one. Let's do another one. Bang.

It's recorded. Let's do another one. It's recorded Ed it one more for good measure. There we go.

Okay, now if we hit, press the button. Max was 99.99 Min was that and the average was smack in the middle. So what's going on with this? BK Precision. It doesn't.

That's how you'd expect it to work if you read the manual. but it doesn't. Let's try another method. Instead of disconnecting completely, we're going to recording mode and I'll plug another one in parallel.

Bingo It's recorded. it's recorded so it should have enough data to get Max Min average. It sticks with the one value. It's crazy I Reckon there's something wrong with this unless I'm completely dumb and I don't know how this functionality Works beats me.

One other uh difference with this new design over the original Escort one is that it had a an A manual range override so it would actually allow you to go in and manually change the range. You don't have a manual selection capability on this new model BK Precision or not that I can find anyway? Um, it's only got Auto ranging which could which is great for most of the time. but when you need that manual ranging, it's really annoying that it only has Auto ranging. Now the manual that comes with is really quite nice.

It's um, it's all in English of course and it's um, it's got pretty much everything you could possibly need, including um, the USB uh command modes. It's actually a Serial Port interface, but as you can see, here's all the here's all the serial commands for controlling the instrument so you can write your own drivers for uh, for Linux or for any other serial equipped machine you like. It's great. Now let's do a basic measurement on a 1 mli Henry inductor here and as you can see, it's got an ESR of 2.6 ohmm or thereabouts.

Let's see if we can fool that by putting a 10 Ohm resistor in series if we clip that on there. and no, we can't fool it at all. There it is 12.9 ohms and still 1 mli Henry Now I won't bore you with all the details about how I measured all sorts of components over all sorts of ranges and it seems to do exactly what it's supposed to do and spec-wise I Don't have any real high prision High stability, capacitors and inductors to do absolute reference measurements with, but comparative measurements with other LCR meters I've got show that it's spot on and really I have no doubt it's going to meet its Uh manual specifications that are in the manual over all the ranges. so it looks like it's a really high-spec instrument I Like it.

And here's the PC software. I've got uh it hooked up via USB here and you have to install the drivers. You can download the drivers and and the uh basic Control software from the BK Precision website. Now I've I Had a bit of an issue here because I installed the driver software and it told me that um it set up this serial Port because it is actually a USB to Art uh Bridge driver.

So it set mine up as uh com number eight and if you go into the software here, it only supports up to com number six so that's something to watch out for. I Had to man man reconfigure it via Windows to com 5. so if I go to com 5 and connect Bingo it showed up as remote on the LCD there and we can measure I've set it to auto update here and it's reading the primary and the secondary display from the meter. but look at the resolution.

check it out. it's .1 fto farads. It's phenomenal and it looks like um, you can get much greater resolution than what you can get on the display here. This this is really remarkable and it could come in real Handy and basically uh, this is just a simple control uh program.

You can basically control all the remote uh interface on this. so I can measure capacitance or I can go in and measure impedance or measure inductance or anything like that. so if I stick my capacitor in there and I measure capacitance, there it is. It's popped up and it gives you much better resolution than what you can actually get on the display.

Check it out! 98.25% ground so we'll stop that there and you can save it to Excel and text format Beauty I Like it. It's an awesome little control program. but the good thing about the serial commands on this is that um, they are Scpi or Skippy compliant which is Um stands for standard commands for programmable instruments. so it has a standard interface fully documented.

You can write your own drivers for it for any any control program you like. Awesome! And the serial Port driver is actually uh, the Silicon Vcp driver. So it does support everything up to Windows 7 which is what I'm using here. and let's do a quick check of the battery consumption.

Now the Metr hit Energy here is measuring the battery voltage. uh, the Metr hit extra here is measuring the input Uh battery current I'm powering it from my external Supply over there and the Um specs are actually in the Uh manual and it tells us that um, it draws about 28 milliamps with the power on and 2 microamp power off. But as you can see, it's only drawing5 microamps in standby mode, so that's excellent. It easily meets its spec there and just in regular mode, it's only drawing 17 milliamps.

So much for 28. so the specs are way out. Let's measure a capacitor see if it makes any difference. There we go: 17.6 milliamps no problem at 9 volts and it tells us that it drops out at 6.8 Vols which is pretty good.

Well, let's try that out, shall we? Let's wind down the power supply and we're looking for the low battery at 6.8 Oh yep, there it is there. It is there. Yeah, and it is about 6.8 as they claim. As you'd expect at 6.8 Vols, it's about 22 milliamps uh consumption, but still way under the Uh data sheet spec of 28 milliamps.

That sort of consumption with a 9vt battery at around about 20 millia is probably going to give you about 45 to 50 hours of battery life, which isn't too bad for an instrument like this. So what are the maximum measurement ranges? Well, let's check it out. The inductance: We're talking about 1,000 Henry's full scale, which is pretty darn good. and at the minimum range it says it's 40 micro Henri's But as I said, I couldn't get that it's only 400 microhenry.

but that's um, still pretty darn excellent. Uh, usable range and the capacitance. We're talking about a maximum range of 20 mad, which is pretty good if you need to go bigger than that. Well, gez, you're into some serious stuff.

Um, and the minimum range? as I said I couldn't get 40 paa farad. So the minimum range is 400 paa farads. But really, if you're going to need more than that, maybe you can use the PC interface to actually extend that if you really need to. And the resistance only goes up to an upper limit of Uh 10 Meg which is, well, it's not that great really, but you don't typically use these LCR meters to measure High values of of resistance.

and the ESR down on the minimum range is a 1 ohm range. so it's pretty awesome in the ESR and the resistance is Uh 4 Ohms minimum range. So the verdict on the BK Precision 879b I Really like it. It's probably my pick of the handheld LCR meters.

It's I think it's great value for money at $299 bit on the expensive side. Maybe you could argue. not quite at the hobbyist level, but it's a really awesome instrument. It's precise, it's got a huge measurement ranges.

The PC software is really nice, um, the PC interface. The only disadvantage with that is that the USB uh interface is not isolated. so if you need an isolated interface for some sort of production work or something like that, it's probably not going to be suited. Unless you get an external isolator, you might have to go for another instrument, But apart from that, it's a really great meter.

It works really well. I like it. Um, but I have no idea what's going on with the recording minmax functionality. So BK Precision Need to look at that and tell me I'm an idiot cuz I don't know how to use it I don't know.

Go figure. but yeah. I Really like it. Check it out!.