New Low Cost ScopeMeters by Zoyi the ZT703S vs ZT702S deep dive

[@mikebowers7161]

I have the 702 and as a hobbyist, it is great for what I’m capable of doing. I watched the entire video out of appreciation for your hard work. Thanks very much.

[@KissAnalog]

That is awesome! Thank you! I appreciate you!

[@das250250]

That was an extreme review , take my hat off for all the effort .thanks .

[@KissAnalog]

Much appreciated!

[@versace885]

Hi Eddie, thank you so much for your time in putting out this video, excellent. 👍

[@KissAnalog]

Thanks so much! I appreciate you!

[@ssalient]

I probably gonna get a 703 for portable work. It seems more than sufficient for what I want to do with it and its a really handy all-in-one solution. I think, if they keep the support up for firmwares and such, Zotek really has a winner on their hands with this one!

[@KissAnalog]

I agree. The price of these and what they do is crazy good value.

[@guateque1718]

I really appreciate the effort you put into this. Thanks.

[@KissAnalog]

Thanks so much! I appreciate you!

[@howlinhog]

I can't believe how much I like the 702. Really nice trace. I ran into issues right away with it but the latest firmware update took care of it. Very easy to do by the way.

[@KissAnalog]

Thanks for the info! I need to update both these meters if there are firmware updates.

[@howlinhog]

@@KissAnalog Press the menu button and scroll over until you see the version number. As of about a month ago version 1.03.58 is the latest for the 702S

[@KissAnalog]

Thank you! It looks (at 21:45) like I have 1.03.43

[@Ghostpalace]

Thank you! 😀 amazing videos :)

[@KissAnalog]

I appreciate you!

[@terrym1065]

Eddie👍👍 I think there's an option for two scope probes for the 703s during purchase. You maybe could use the 702s probe along with the 703s probe for two channel use on the 703s scope. Nice and thorough showing the differences between the two scope meters, thanks. You've run out of room on that bench😮 You're gonna need a bigger boat😉

[@KissAnalog]

LOL - thanks - you are right!

[@VIPINSAINI_20]

Thanks for your hard work on this video, it's very nice and easy to understand what these ones can do or can't do Nice video, very informative

[@KissAnalog]

Thanks so much! I appreciate you!

[@moparkr]

Appreciate the review of these. I got the 702. I have noticed the same strange readings when using the scope functions as well. One thing you didnt show or were not aware of, when measuring higher voltages (110 vac and up) the white numbers turn red. Its not a huge issue but the red numbers kind of blend in a bit with the red on the "analog" display, makes it a little harder to see. Battery life on mine has been all over the place as well. I got mine for about $45 on temu, cant beat that.

[@KissAnalog]

Thanks for the great feedback! Yes I realized I forgot to show the high voltage warning (red LEDs) and I wish I had. It is a nice feature, but if the display is hard to see - then maybe they could have changed the background too?

[@jabbalechat7910]

I've already got a 703S on the way from Alibaba, good price and in stock. Banggood behind the curve on this one, no stock...

[@KissAnalog]

Thanks - let us know how you like it. I have links provided by ZOYI in my description.

[@jabbalechat7910]

I also have a ZOYI ZT-5566 desktop meter, which is a couple of years old now, and it's performed perfectly to date...

[@KissAnalog]

That's great to hear!

[@prmnp]

Was considering an Owon but its price point is too expensive for a starter hobbyist. Now I think I have found a better option! Thank you

[@KissAnalog]

I am impressed with these. I took some inrush current measurements and was very happy. This link takes to the one with 2 scope probe leads: amzn.to/3WnFtYp

[@electronicsworkbench]

Great detail and depth review! Thank you. In the 702 video you weren't sure what to call it. How about Oscillo-Meter?

[@KissAnalog]

Thanks for your feedback! These are pretty great - especially for the price;)

[@romyjaravata238]

A review/teardown of this 703 will be interesting to watch and monitor.

[@KissAnalog]

Thanks - I was going to do that in this video as well as other testing - but I decided it was already so long,.. I'll show this in a review of a microscope;)

[@lmt200ish]

Good comparison to the 702

[@KissAnalog]

Thanks!

[@Peter-rt3tu]

When checking for probe setting, AC coupling etc., you always looked at the channel 2 settings, but the generator was connected to channel 1. Maybe this is why the readings looked a bit odd. However, when autosetting, the scope should show the correct values, e.g. 1V instead of 1.4V.

[@KissAnalog]

Thanks! I did turn off channel 2 at one point so I was just testing channel 1. Did I make a mistake somewhere?

[@patrickrgrier3195]

thanks, I have the 702, was wondering why the waveforms were so messed up.

[@KissAnalog]

Thanks for your feedback! There might be a firmware update as well;)

[@igor_v_kuznetsov]

Thank you very much!!!

[@KissAnalog]

Thanks for your feedback!

[@eboy536]

Both are great for simply the best 👌

[@KissAnalog]

Thanks for your feedback!

[@Robjud-u2x]

I have the 702 although bside branded. The larger screen and extra channel would be nice. Im still happy with the 702 as it suits my rather primitive needs. Good little scopes.

[@KissAnalog]

Thanks for your feedback! I was happy with the screen size on the 702 as well. It is only when you see them side by side that the 703 looks so much bigger.

[@Cortina_Ron]

For frequencies above 33 MHz the run mode needs to be set to HIGH, then it works up to about 47 MHz ok, but the battery consumption goes up by 20%, so resets to normal when rebooted each time.

[@KissAnalog]

Thanks for this input! I"ll have to check that. Do you have the latest firmware version?

[@Cortina_Ron]

@@KissAnalog Yes, V1.3.9

[@qzorn4440]

Thanks!

[@KissAnalog]

Thanks so much for your support! I appreciate you!

[@Cortina_Ron]

UPDATE. With the new 1.4.2. firmware update we now have a third trace available in the form of "FFT" (FAST FOURIER TRANSFORM) availability in glorious RED colour. It replaces the FORMAT position in the fourth menu which was used to delete the stored screen shots. It changes the "X" axis from time to frequency and as such changes the display to that of a a spectrum analyser. Frequency is plotted along the x-axis and amplitude is plotted along the y-axis. FFTs often look like a series of mountain peaks. The horizontal location of peaks indicates which frequencies are strongly present in the W/F. The valleys show which frequencies are absent. I tried this with the built in calibration sig gen on all the available W/Fs and it shows the strongest frequency is the prime 1 KHz followed in the case of square waves by diminishing amplitude peaks at each successive square wave. Quite useful when checking audio problems etc. The second change in the menu is in the 2nd row, what used to be the trigger position, is now "SAMPLE" with two choices, HD & PEAK, peak.

[@jony-baroi]

Wow.. two little cute oscilloscopes.. sir, which one will you go with?

[@jony-baroi]

Oh you prefer 2s..?

[@KissAnalog]

Thanks! I do like the larger display and 2 inputs on the ZT703S;)

[@TzOk]

50% trigger sets the trigger at 50% of the current waveform (like "trigger auto level"). Siglent oscilloscopes have this function by pressing the trigger level adjustment knob.

[@KissAnalog]

Thank you! That's a nice feature that I'm not sure everyone knows about;)

[@qzorn4440]

2 channel Lissajous waveforms are fun and a great way to get people curious and inquisitive about electronics. 🐬 The Zoyi ZT703S looks great. Can a laptop display the Zoyi in real-time? I have several oscilloscopes. Now, I am waiting for the 2 channel 12 bit hobby scopes to flood the market. I hope? 😎 Thank you for a most interesting video. 5 digits is the way to go.

[@KissAnalog]

Thanks I agree on all points! I'm doing what I can to make it known that 8 bit is so old school;)

[@ZOrdZ]

I have the Aneg AOS02, which is the ZT702S, exactly the same, even upgraded firmware from Zoyi. Very nice to small analog audio repairs. For the price, it's one of the best.

[@zmmmzmmmz]

I don't understand most of this video, but want to look at output of my synthesizers, Korg sells one but it's $200 and limited to the purpose, would this be good for that while also being a nice tool to have for other use too?

[@KissAnalog]

Thanks for the question. I think it would but not sure what the Korg is;)

[@wizzardofwizzards]

Hi Eddie, so the Zoyi seems like a bargain for the cost. However, I got a FNIRSI DPOX180H handheld dual channel digital oscilloscope at 180MHz for a few dollars more at the AliExpress 11/11 sale. While it seems clear there are several trade-offs, and the manufacturer's specifications are a matter of interpretation, I was wondering if you are familiar with the DPOX180H and if so, what your take on it is?

[@KissAnalog]

Thanks for asking. I'd love to run a comparison side by side with the ZOYI. The FNIRSI looks great but is around $170 where the ZOYI is only about $75. For the price of the ZOYI - it is pretty impressive.

[@harunfarahani]

Thanks for your help and I 🎉

[@KissAnalog]

You Bet! Thanks for your feedback!

[@EdSym1]

Did you set Run Mode to High when you were doing the higher frequencies above 30MHz on the ZT703S?

[@KissAnalog]

I think I did - but now I'm not sure;) Did you have a question on how it worked?

[@EdSym1]

@@KissAnalog just wondering about the frequency range to 50Mhz.

[@Cortina_Ron]

@@EdSym1 On sine wave its steady when set to high speed mode up to 46MHz, as soon as you go over, some jitter starts up but the sine wave is still there to well over 50MHz.

[@Youcelf]

Thanks 🎉

[@KissAnalog]

I appreciate you!

[@frankdearr2772]

Great topic, thanks

[@KissAnalog]

Glad you liked it! Thanks for your feedback!

[@krzysiek-ep2vm]

Hello. I have a question: can this oscilloscope record a single pulse? You know, one that doesn't repeat itself in cycles. Thank you in advance for your answer.

[@KissAnalog]

Yes, absolutely. I was using it just the other day to capture inrush current spikes. I compared it to my PicoScope - and they agreed;)

[@krzysiek-ep2vm]

@@KissAnalog I have already bought this(zt703s) oscilloscope. Thank you for your answer. Greetings from Poland.

[@dongwarrenmusic]

Owhs. I just commented on the other video to have two channels without the multi meter and look, there it is with multi meter still. Haha. How's the price sir Ed?

[@KissAnalog]

Thanks so much! I appreciate you!

[@dongwarrenmusic]

@@KissAnalog i wish they have an oscilloscope only version. we can't use the multimeter and the scope at once anyway. at least, remove the multimeter mode and swap the parts budget to the bigger screen or more channels so that it will still at a lower price.

[@mikedavis1137]

Nice, and I didn’t fall asleep lol

[@KissAnalog]

That's great! This is a long video;)

[@mikedavis1137]

@@KissAnalog it was long lol but wort it, I have an attention span of a Doberman lol. Like the channel and your bias opinions. Keep it real and if you could throw a few more testers on YOUR bench lol

[@KissAnalog]

Thanks!

[@Ni5ei]

Just wish they'd leave out the whole multimeter part and spend their time and money on improving the scope. I bet everyone buying a portable scope already owns a decent multimeter.

[@KissAnalog]

I know what you mean - but I think the cost of adding the multimeter function is just software - so probably doesn't add much.

[@andreijorda4598]

Tack!

[@KissAnalog]

Thanks so much for your generosity!

[@вечная_мерзлота]

I heard these 2 channels are not independent/using shared memory so it can't have true XY mode but rather done by software calculation.

[@KissAnalog]

That's a great question. Most scopes share memory, so there must be something else to it. I'll look into it. I think I'm going to have a few more of these scopemeters soon - so I'll do a shoot out.

[@disuye]

Dumb question - I want to get an automotive range (200-500A) current clamp to measure starter motor draw / injectors etc..., which clamp should I buy for the ZT703S? Can the ZT703S record an oscilloscope trace from the multimeter banana connectors? Or do I need to buy a BNC connected current clamp? Thanks! Great videos. p.s: This Zotek model is going to be huge in the DIY market, and bring a lot of people into oscilloscope based testing... you could really corner the market in tutorials if you made a 702/703 specific series of "how to test ________ issue in 5 minutes using a 703/702" type videos.

[@KissAnalog]

Thanks for the great feedback! Yes, I would get the clamp with BNC connector so that you get the benefits of the scope bandwidth. I think that series showing how to use these handheld scopes is a great idea! Thank you!

[@ciocrazvan9388]

Aliexpress: HP-605A

[@disuye]

@@KissAnalog OK got it! Do you have any make / model recommendations? There seems to be a huge price range for BNC clamps from $30 up to $3000, not idea how to judge what's decent / garbage/ Thanks again!

[@KissAnalog]

This is a low cost current clamp that will work with the scope. kzbin.info/www/bejne/jnTFoH2knMiFbLc

[@Гламир]

Лайк ? Да пожалуйста , не жалко ) Даже подпишусь ) ОТЛИЧНЫЙ ОБЗОР ! Действительно , странно что так мало лайков .

[@KissAnalog]

Thanks so much! I appreciate you!

[@mafosa8519]

do any of those also have THD feature?

[@KissAnalog]

Sadly no:( Thanks for asking!

[@willthecat3861]

Can only see that ZT703S comes with one probe.... at least on every store on AliExpress I checked.

[@KissAnalog]

I'll give them feedback and see what they say. They asked me to provide feedback so I do think that they want to do better.

[@rogerrynearson2500]

I purchased my 703S from AliExpress not noticing it had a 1 or 2 probe option I contacted them to change my order to two probes and the nice person said no problem we send two probes not change order, so I received it had one probe in the box and a second probe loose in the shipping box. I guess the AliExpress people agree, who the hell buys a dual channel Scope with only one probe. The 702S and 703S probes are the same but they are all only 60 Mhz. Not a problem for the 702S but not good for the 703S 100 Mhz spec. I am going to ask for 100 Mhz probes. First order from AliExpress went well.

[@Cortina_Ron]

V1.4.2 ZTK firmware out now, 24-Sept 2024, (703s)

[@KissAnalog]

Thanks so much!!

[@MrDoneboy]

I still wouldn't trade my Tektronix 2245A scope...For Any of the new stuff! Just saying, Eddie! Lol

[@KissAnalog]

LOL but this might be interesting to use as a differential (floating) scope;) And as a mobile scope.

[@945-b2m]

Always in favor of companies that want to improve!

[@KissAnalog]

Thanks - I agree.

[@clems6989]

Good for some applications. And as a learning tool. The sig-gen is pretty much useless.

[@estebanvillalobos2303]

there's a new firmware out for the 703, v129 fixes auto button.

[@KissAnalog]

Thank you! I'll have to do a video on this as I hear it is a nice upgrade to the early release that I have;)

[@graxxor]

Do you actually use anything you buy for work or just review it for KZbin? There’s no way anyone with a desk that small needs that many testing devices.

[@KissAnalog]

Yes I actually do take some devices into work - one to get the job done quicker - and two to demonstrate it to the group so that we can consider getting one for the lab;) Yes you are right - I don't need all this for my work at home. I always have projects going on - more than one at a time;) But much of this is to show others so that they might have options to choose from. I try to compare devices to make this easier. I do have two other benches that are never shown. The camera compresses the image, but the bench you are looking at in front with the multimeters on it is almost 6', and the one with the larger equipment on it is 7' long. That is 13' of bench;)

[@mp1454]

😊😊😊😊😊🙏🏻🌟🌟🌟🌟🌟👍🏻

[@KissAnalog]

Thanks!

[@columbiapictures452]

Я так и не понял какой прибор покупать 😂

[@KissAnalog]

I like the updated firmware in the ZT703S, but then maybe the new firmware for the ZT702S will have those new features?

[@mikejones-vd3fg]

Nice, I got a similiar speced one last year minus the multimeter. and it has done me fine (measuring pwm pin of a MCU etc) until i found a video on it and was disappointed to see the signal jump around in a real audio application. It too measures in the 5-10mhz range by some reviewres although it boast 100mhz, so the signal shouldne be bouncing around at 1khz like in this guys video? kzbin.info/www/bejne/npW3c6mdZtKbnc0si=H84gEHj7yppNxtOx Maybe he doesnt know how to use it correctly, like triggering and what not and I was kind of hoping youd go into that a little more. Oscilliscope basics, probably who'd need it if youre buying a scope at this level. Like theres an auto trigger, manual one, had no idea what that even meant other then pressing auto seems to work fine. Anyway I think i got the jist of it and seeing the bandwidth test was cool and ill have to do it on mine. But now i want to see the switching action of a mosfet, or the recovery time of a diode and still dont know how to do that. Like to capture a fast moment. Are these scopes capable of that or should i be upgrading? I was gonig to recommend these cheap ones but not sure after seeing that video of it being used for guitar effets pedals, unless he's not using it correctly but i was expecting more stable images in audio range, so you can compare easily. Ill have to try myself. Thanks for getting me back in the mood.

[@KissAnalog]

Thanks for your feedback! I need to do a beginners guide to using an Oscilloscope:)