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

[naiclub]

(I still can't sell zoyi702, no one is interested)

[wedgehog]

(I still can't sell zoyi702, no one is interested)

Why would anyone want it when 703S is available?

[Aldo22]

(I still can't sell zoyi702, no one is interested)

Why would anyone want it when 703S is available?

Why would anyone want a 703S? 
It's all a question of price.

[RAPo]

... or a scope in the form of a multimeter with a rudimentary x-y functionality.

[oliv3r]

Just ordered one after watching the view. While not a super scope; it's imo great to have a portable isolated (cause battery operated) one for on the side. It's like those €5,- multi-meters. Always nice to have 1 or 2 to just have.

I got a MSO5k for my other hobby stuff, that I turn on at least 4 times a year :p

But again, being able to measure without having to worry about shortening anything to ground is still pretty cool. And the portable aspect! For those needs, it's great. I must admit though, I am disappointment they only supplied a single probe Even for that price, they could have put in two in the box. Found out they have 'options' when ordering to get a two probe one, so canceled and reordered. Lets see. Still for €90,- it's a nice toy to have in the box.

[wedgehog]

Just ordered one after watching the view. While not a super scope; it's imo great to have a portable isolated (cause battery operated) one for on the side. It's like those €5,- multi-meters. Always nice to have 1 or 2 to just have.

I got a MSO5k for my other hobby stuff, that I turn on at least 4 times a year :p

But again, being able to measure without having to worry about shortening anything to ground is still pretty cool. And the portable aspect! For those needs, it's great. I must admit though, I am disappointment they only supplied a single probe Even for that price, they could have put in two in the box. Found out they have 'options' when ordering to get a two probe one, so canceled and reordered. Lets see. Still for €90,- it's a nice toy to have in the box.

Hi Olly, Exactly, I have a 500mhz 4 input Rigol on the bench, but for a quick look at something away from the bench it's ideal. I find some of the comments I have seen quite incredible, people expect the Earth for £75 or whatever, it's like when you sell a second-hand car fairly cheap and the buyer goes over every inch complaining about a little scratch here and a little dent there. I always say, Oh! you expected a brand new top of the range car for £800! You get what you pay for, especially in electronics, and I think for the price it's wonderful. Yes you will get the second probe thrown in the box beside the little box the scope/meter comes in so be careful when you open it.

[Randy222]

Any word when v1.2.8 will be available from Zoyi site?

[Greg J]

anyone was able to figure out how to turn off sounds yet? When changing mode, it beeps like hell - I hate that stuff.

[Razvan_N]

I have updated the firmware using v1.2.8 from the szzotek.com website and it works well on my unit (boot v1.0.15) although I still cannot tell what is changed in this version

If someone from Zotek is reading this: PLEASE put in an option to mute the beeps and bring back the temperature reading!!! We will supply our own thermocouples!

[naiclub]

Now is there a solution to the issue of measuring pairs of scopes? Has anyone tried it yet?

[Edmiri]

Im having the same issue with calibration, Check Failure.  Did you fpund any solution?

[RAPo]

Im having the same issue with calibration, Check Failure.  Did you fpund any solution?

turn both channels on and do the calibration.

[naiclub]

Im having the same issue with calibration, Check Failure.  Did you fpund any solution?

Make a scope that can measure pairs. But why can only measure 1 channel? You are definitely deceiving consumers.

[Edmiri]

Well people forget that one channel is off. Plus this is my first scope so im not a pro.

[Randy222]

Well people forget that one channel is off. Plus this is my first scope so im not a pro.

The firmware is bizarre in that regard.
If I hit "cal" then the code "should" prompt you with something like "disconnect all channels, then press MENU to continue", and then from there the cal code does it's thing, and it should turn on both channels at the start of it's routine.
That's what the code "should" do, but it's not coded that way.

Did Zoyi post up v1.2.8 code yet?

[Edmiri]

No. Latest version i could download from zotektools.com is ZOYI-703S-FW-V127(1).ZTK

[ha_embedded]

The laser-wiped multimeter chipset in the ZT-703S could be a DTM0660L - at least it seems to have an identical pinout (see below). But there is no indication in the datasheet about 25000 counts capability. The SZ20 from Aneng also uses the DTM0660 and also claims 25000 counts:
https://www.eevblog.com/forum/testgear/aneng-goes-crazy-with-new-meters/msg4773944/#msg4773944

(Aneng SZ20 probably aka Zoyi ZT-225, also 25000 counts)

Anyone familiar with this? Is there a special version of the DTM0660 with higher resolution or is it done with interpolation?

Datasheet DTM0660: https://drive.google.com/file/d/0B6fbSrbAyU1lUlhBQXY3bS1RLU0/view?resourcekey=0-j-BXh9QdU7HVI-Wgu3Gpew
English translation: http://www.kerrywong.com/blog/wp-content/uploads/2016/04/DTM0660DataSheet.pdf

Not important, I am just curious.

[Veteran68]

Did Zoyi post up v1.2.8 code yet?

No. Latest version i could download from zotektools.com is ZOYI-703S-FW-V127(1).ZTK

As was posted previously, 1.2.8 is available from the szzotek.com site, which is the Chinese language site for Zotek.

http://www.szzotek.com/h-col-159.html

[lchao]

V1.2.9 update content
1. Fixed the problem that when switching to multimeter mode, pressing F1 to F4 will cause the measurement items and the interface UI to be out of sync.
2. Optimize frequency measurement. When the frequency cannot be measured, the frequency value will become "--.--".
3. Optimize the AUTO strategy, which is faster and more accurate in identification.
4. Fix the problem that the frequency and time base are sometimes inaccurate in high-speed mode.
5. Fix the problem that the signal generator outputs an incorrect frequency in high-speed mode.
6. Fix the possibility that the U disk cannot be opened when FLASH prompts that there is insufficient memory.

[Randy222]

Did Zoyi post up v1.2.8 code yet?

No. Latest version i could download from zotektools.com is ZOYI-703S-FW-V127(1).ZTK

As was posted previously, 1.2.8 is available from the szzotek.com site, which is the Chinese language site for Zotek.

http://www.szzotek.com/h-col-159.html

But why is it not on the regualt Zoyi site?

Even the domain registration info for szzotek is odd.

[Veteran68]

But why is it not on the regualt Zoyi site?

Even the domain registration info for szzotek is odd.

It's behind a private registry service, just like the western zotektools.com site, just a different one. That by itself isn't that uncommon (most of my domains are behind private registrars), although I would expect most legitimate businesses to expose their domain contacts. I was skeptical of szzotek too when it was first mentioned (pretty sure in this thread) and suggested caution, but did some digging and came to conclusion it was legitimately their China-facing site. If you answer the prompt about English, it actually redirects you to the zotektools site.

Many Chinese equipment manufacturers have different internally-facing sites. Also some of them (e.g. Rigol) will post firmware updates to some sites and not others. So this really isn't that unusual.

On a loosely related note, Darren Walker had a Zotek rep on his YT channel a week or so ago when he was unboxing the 703S and asked her about the Zoyi vs Zotek distinction. We all knew they were the same company, but she clarified that Zotek is the western facing brand while Zoyi is the internal to China/Asia brand. She said they weren't allowed to market as Zoyi outside of China, so adopted the name Zotek. She didn't explain why, I assume for trademark or other reasons.

[Edmiri]

I know its to much to ask for this but can this scope measure signal noise and ripple to some degree? For example on a atx power supply. If yes whats the best configuration in settings for this purpose?

[naiclub]

V1.2.9 update content
1. Fixed the problem that when switching to multimeter mode, pressing F1 to F4 will cause the measurement items and the interface UI to be out of sync.
2. Optimize frequency measurement. When the frequency cannot be measured, the frequency value will become "--.--".
3. Optimize the AUTO strategy, which is faster and more accurate in identification.
4. Fix the problem that the frequency and time base are sometimes inaccurate in high-speed mode.
5. Fix the problem that the signal generator outputs an incorrect frequency in high-speed mode.
6. Fix the possibility that the U disk cannot be opened when FLASH prompts that there is insufficient memory.

Where did you get it from?

[kloetpatra]

What annoys me most is that beeing not in use, negative values causes the digits jumping around, because the string is centered together with the minus sign.

1.2.9 firmware direct link: http://www.dt830.com/forum.php?mod=attachment&aid=NDU1MDl8NjVhZGVjYzJ8MTcwOTAzMDM2M3wwfDgzMzE%3D

The changelog thread and download links: http://www.dt830.com/thread-8331-1-1.html

[Randy222]

But why is it not on the regualt Zoyi site?

Even the domain registration info for szzotek is odd.

It's behind a private registry service, just like the western zotektools.com site, just a different one. That by itself isn't that uncommon (most of my domains are behind private registrars), although I would expect most legitimate businesses to expose their domain contacts. I was skeptical of szzotek too when it was first mentioned (pretty sure in this thread) and suggested caution, but did some digging and came to conclusion it was legitimately their China-facing site. If you answer the prompt about English, it actually redirects you to the zotektools site.

Many Chinese equipment manufacturers have different internally-facing sites. Also some of them (e.g. Rigol) will post firmware updates to some sites and not others. So this really isn't that unusual.

On a loosely related note, Darren Walker had a Zotek rep on his YT channel a week or so ago when he was unboxing the 703S and asked her about the Zoyi vs Zotek distinction. We all knew they were the same company, but she clarified that Zotek is the western facing brand while Zoyi is the internal to China/Asia brand. She said they weren't allowed to market as Zoyi outside of China, so adopted the name Zotek. She didn't explain why, I assume for trademark or other reasons.

I covered all this a few pages back. Registration of the name is kinda useless. Follow the DNS and stuff. No 'A' record, the name is just a CNAME to some other site.
https://www.eevblog.com/forum/testgear/new-zoyi-multimeteroscilloscopes-zt-70xs-up-to-50mhz250msps-(nov-2022)/msg5316196/#msg5316196