New Zoyi multimeter+oscilloscopes - ZT-70xS, up to 50MHz/250MSps (nov 2022)

[tunk]

Short youtube video with three new multimeter+oscilloscopes.
Guessing these are the specs:
- ZT-701S: 1ch, 24MSps, 3MHz, 64Kpts, 2.8" screen, 6000 count multimeter
- ZT-702S: 1ch, 48MSps, 10Mhz, 64Kpts, 2.8" screen, 9999 count multimeter
- ZT-703S: 2ch, 250MSps, 50MHz, 512Kpts, 3.5" screen, 25000 count multimeter

https://youtu.be/YNgsjPeb9O4

Edit: I guess these eventually will be rebranded as Anengs etc.

[tunk]

The ZT-702S is starting to show up at aliexpress from around $65.
It's also rebranded as Richmeters and Bside.
So now we're waiting for the introduction and pricing of the ZT-703S.

[tunk]

The ZT-702S is now on their web-page:
https://zotektools.com/products/zt-702s/

[RAPo]

Already have this meter, but I see no reference to the two-channel version. Is this a marketing trick, first you do some mouth-watering, wait for some time so that people bite the bullet and the next higher version appears.

[RAPo]

There is one crucial measurement missing: duty cycle.

[tunk]

The ZT-702S is now showing up as the Aneng AOS02:
https://aneng.aliexpress.com/store/919484/search?SearchText=aos02

[tunk]

The manual for the ZT-702S is now out:
https://www.dropbox.com/s/03cvx7b5zk33wr4/ZT-702S%20EN.pdf?dl=0

[Aldo22]

I'm not quite sure about those "cheap" scopemeters.
I think that with a DSO1511G and Zoyi ZT219 , for example, I have better equipment for almost the same price.
I can use both functions at the same time and if one breaks, the other still works
What do you think?

[Hobby73]

There is one crucial measurement missing: duty cycle.

Is there any workaround to measuring the duty cycle?

[RAPo]

Didn't find it 

[Hobby73]

Didn't find it 

I'm looking at the FNIRSI DSO-TC3 as an alternative (for lower frequency PWM work).

[Aldo22]

Didn't find it 

I'm looking at the FNIRSI DSO-TC3 as an alternative (for lower frequency PWM work).

I do not recommend these.
See also: https://www.eevblog.com/forum/testgear/new-(toy)-dsolcr-meter-fnirsi-tc2-(june-2022)/msg4881002/#msg4881002

[tunk]

I'm looking at the FNIRSI DSO-TC3 as an alternative (for lower frequency PWM work).

The Zeeweii DSO154pro has much better specs and a lower price
(but no component tester). If you don't need component tester,
Fnirsi DSO152.

[Fungus]

The Zeeweii DSO154pro has much better specs and a lower price

Yep. I've got a Zeeweii and it's really good.

[RAPo]

Indeed.

[Aldo22]

The Zeeweii DSO154pro has much better specs and a lower price
(but no component tester). If you don't need component tester,
Fnirsi DSO152.

Yes, but I still wouldn't recommend these two.
The DSO152 is not up to date with 200kHz bandwidth and the DSO154pro doesn't even have a proper case.
I don't think these are good deals.

For me, the DSO1511G has the best price/performance ratio in the lowest price range.
You can get pretty far with it as an Arduino hobbyist.

If you would like two channels, there is the DSO2512G or the Fnirsi DPOX180H which also looks tempting, but I don't own one and for me the information about it is still contradictory.

[Hobby73]

The scope needs to display Duty Cycle or it's useless to me.

[Aldo22]

The scope needs to display Duty Cycle or it's useless to me.

Afaik all these Zeeweii and Fnirsi mentioned can do that.

[Hobby73]

The scope needs to display Duty Cycle or it's useless to me.

Afaik all these Zeeweii and Fnirsi mentioned can do that.

I didn't see any other photos of the Zeeweii with the Duty Cycle displayed.  Thanks for posting. 

I realize that the product listings which show only a subset of the device features can mislead me into thinking they don't support features not shown.

[Aldo22]

I didn't see any other photos of the Zeeweii with the Duty Cycle displayed.  Thanks for posting. 

I realize that the product listings which show only a subset of the device features can mislead me into thinking they don't support features not shown.

All of the mentioned Zeeweii can show the following 14 measurements:

Frequency,
Peak-to-Peak,
Duty cycle,
Amplitude,
RMS,
Average,
Period,
+Pulse width,
-Pulse width,
Max,
Min,
Top,
Base,
-Duty cycle

[Hobby73]

I didn't see any other photos of the Zeeweii with the Duty Cycle displayed.  Thanks for posting. 

I realize that the product listings which show only a subset of the device features can mislead me into thinking they don't support features not shown.

All of the mentioned Zeeweii can show the following 14 measurements:

Frequency,
Peak-to-Peak,
Duty cycle,
Amplitude,
RMS,
Average,
Period,
+Pulse width,
-Pulse width,
Max,
Min,
Top,
Base,
-Duty cycle

The Zeeweii covers all the bases.  Does it have a feature for Auto Scale like the Fnirsi has?

[Aldo22]

The Zeeweii covers all the bases.  Does it have a feature for Auto Scale like the Fnirsi has?

Yes, they all have "Auto" and my DSO2512G is very fast with it.
You can download the manual for the version you are interested in here:
http://www.zeeweii.com/support.html

[RAPo]

Yes it has an auto-button. And yes, you can display the duty cycle. See below for a square wave with +1,6% duty.

[Fungus]

The Zeeweii covers all the bases.  Does it have a feature for Auto Scale like the Fnirsi has?

Yes.

Yes it has an auto-button. And yes, you can display the duty cycle. See below for a square wave with +1,6% duty.

Try holding down the Auto button, it goes into auto-scale mode and continuously adapts the display to the signal.

[delvo]

It looks like there is new firmware available: https://zotektools.com/firmware-update/

"Optimized some functions and interfaces."

I havent tried it yet