TA-0390: Zotek ZOYI ZT-703S Scope Multimeter 2ch 50 Mhz - Review

Interesting instrument😀

شكرآ جزيلا لحضرتك استفدت كثيرا من حلقة A620 وقمت بشراءة خالص التحية للعرض الشيق للحلقة والامانة العلمية تلميذك

😮😊🙏🏻👍🏻👍🏻👍🏻👍🏻👍🏻

In fact there is no extra digit, one is in V range and the other one in mV :)

Looks good...

Thanks Tony.

Impressive - I was expecting it to be double the price of the 10Mhz model, but it is just $10 or $20 more? I have only had my 702S for 5 minutes and it's now out of date! I like the larger screen and the image viewer for screenshots, and the signal generator is not bad. My one also has a stiff BNC so I am pleased they fixed that too. I'd love to see a teardown and see the PCB compared with the 10Mhz one. Also the current draw on the battery. 👍

Thank you very much for this prereview review.

Hey Tony! Bedankt voor de review. Misschien als ik in een gekke bui ben koop ik deze er ook nog wel bij. Weet je of ik voor de 702 nog mijn firmware kan upgraden zodat ie ook de mode vasthoudt na uitschakelen?

Well I already have the Owon 72, and the 702S.... So I might have to stop watching your channel! I can't afford so much progress. Hi Hi.

👍

I'm using the 702 S and I'm happy with it, thank you Tony for the info.

Thank you for the review, Tony. It is amazing how many features they can cram into these devices. It looked to me like the upper frequency limit of the scope was a triggering issue rather than a bandwidth issue. As you said, the displayed amplitude did not drop significantly between 47 and 48 MHz. Are there any trigger modes other than auto? - if so it might be interesting to experiment with them. Regards, David

Nice one, thank you Tony. 👍 I got the DSO-3D12 just recently, also not bad for a little bench "all-in-1" tester, can not complain for £80.

Looks like a nice scope 😊😊

Hi Tony, you didn't show the main thing for me. Whether or not this device will be able to show the sine wave of its generator with its oscilloscope, precisely while the frequency of the internal generator is changing.
To set up the resonant circuits, I need to look through the oscilloscope window, and at the same time change the frequency of the generator, all this must happen simultaneously.
It seemed to me that if it is possible to reduce the size of the generator window when the oscilloscope is turned on, I might try to check this.
Is this device suitable for this?
73! UR7CQ

Who is the better zoyi zt703s or fnirsi 2c23t ?

If you are probing 50 mhz, you probably aren't going to be using a $125 anything. I've been at this well over 40 years and with rare exception, there is no need to be measuring up there, especially at the hobbyist level. Anyone pro will likely have active probes which cost 10 times what this costs plugged into a scope that costs 100 times what this costs. If you are doing that kind of work, you aren't shopping for $125 meters.

Thanks for the review Tony. I've ordered one of these from Alibaba and await its arrival with interest...

I watched to see how crappy this was, and yes, you pointed out that the Owon hand-held oscilloscope was much better. The function generator is not good enough to add a BNC connector. Only 1x 16850 battery and the specs are not detailed fully like compareble test equipment. Maybe the price is good but better not to waste it if a little more get you a much better functioning and usable device. I might sound a little biased as I own an Owon HDS2202S. 3 BNC and more user-friendly operating experience. Thanks for showing us the Zoyi.

Hi,I've been watching your content for a while and i wanna thank you for your valuable content. I have a question that I hope you can answer. We were asked to create a project that consists of a transmitter and receiver that works on the 5G network system. I will be grateful if I could contact you to inquire about some matters.

No temperature reading on this one?... :(

Is the 703s signal generator good enough to calibrate the probes at 1khz square wave? (Assuming based on the connector this is the main purpose.)

О, Галустян ! 🙃

Very nice 👍. Subscribe. Ham radio good. 73!!!

Merhaba. Aneng AOS02 kullanıyorum. Acaba zoyi zt-702s güncellemesini yüklesem sorun olurmu. Bunu deneyen varmı.

Tony Do you think the Owon HDS272 is better compared to the 703s? If so, how?

Don't know why, I have 3 real oscilloscopes and a bunch of multimeters, but I had to have one of those. It's a toy for big boys but amazing they can build and deliver that for the $62 I paid.

In my head I bought a 46Mhz scope meter, and it’s remarkable for the money..

Thanks for your help and I

the zeeweii dso2512G is definitely better as an oscilloscope for ~$70...80, ADC 250Ms versus 110-120 for this ZT-703s

Thanks for your

I just got 703s, using to troubleshoot MACBOOK charging problem. Happy so far.
The 703s MENU has a "More APPs" selection; do you know of any that can be loaded? Maybe a 'mirror display to PC'? Because the device does have folders besides "Firmware". ZoTek has nothing I can find.
Thanks

Thank you sir! I have been searching for the beep in continuity mode from a few reviews now, and once you have a meter with the beep, you never want to go back to the dark ages! I like the 703, and I think that will be my purchase to replace my aged DVM in the garage :)

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.

The latest firmware 1.4.2 has added support for FFT, which looks pretty awesome. I haven't been able to try it yet, though

Just got my new ZOYI ZT-703S today, I'll mainly use this to laptop board level diagnostics

Thank you, you helped me solve the one tiny issue I had with my new 703s! I could not find how to disable that ‘screen saver’ and it was annoying since it would always kick in when I had my hands full holding various probes etc. 😂