New Zoyi multimeter+oscilloscopes - ZT-70xS, up to 50MHz/250MSps (nov 2022) - Page 1
Forum section: electronics / testgear

author: tunk
author_rank: Super Contributor
timestamp: November 28, 2022, 04:46:44 pm
content: 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 multimeterhttps://youtu.be/YNgsjPeb9O4Edit: I guess these eventually will be rebranded as Anengs etc.

author: tunk
author_rank: Super Contributor
timestamp: May 05, 2023, 05:29:09 pm
content: 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.

author: tunk
author_rank: Super Contributor
timestamp: May 16, 2023, 01:39:28 pm
content: The ZT-702S is now on their web-page:https://zotektools.com/products/zt-702s/

author: RAPo
author_rank: Super Contributor
timestamp: May 16, 2023, 06:09:01 pm
content: 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.

author: RAPo
author_rank: Super Contributor
timestamp: May 21, 2023, 01:39:43 pm
content: There is one crucial measurement missing: duty cycle.

author: tunk
author_rank: Super Contributor
timestamp: June 07, 2023, 07:07:23 pm
content: The ZT-702S is now showing up as the Aneng AOS02:https://aneng.aliexpress.com/store/919484/search?SearchText=aos02

author: tunk
author_rank: Super Contributor
timestamp: June 17, 2023, 12:29:04 pm
content: The manual for the ZT-702S is now out:https://www.dropbox.com/s/03cvx7b5zk33wr4/ZT-702S%20EN.pdf?dl=0

author: Aldo22
author_rank: Super Contributor
timestamp: June 17, 2023, 02:38:58 pm
content: I'm not quite sure about those "cheap" scopemeters.I think that with aDSO1511GandZoyi 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 worksWhat do you think?

author: Hobby73
author_rank: Regular Contributor
timestamp: June 22, 2023, 04:58:15 pm
content: Quote from: RAPo on May 21, 2023, 01:39:43 pmIs there any workaround to measuring the duty cycle?

author: RAPo
author_rank: Super Contributor
timestamp: June 22, 2023, 05:53:10 pm
content: Didn't find it

author: Hobby73
author_rank: Regular Contributor
timestamp: June 22, 2023, 11:00:04 pm
content: Quote from: RAPo on June 22, 2023, 05:53:10 pmI'm looking at the FNIRSI DSO-TC3 as an alternative (for lower frequency PWM work).

author: Aldo22
author_rank: Super Contributor
timestamp: June 23, 2023, 08:05:29 am
content: Quote from: Hobby73 on June 22, 2023, 11:00:04 pmI do not recommend these.See also:https://www.eevblog.com/forum/testgear/new-(toy)-dsolcr-meter-fnirsi-tc2-(june-2022)/msg4881002/#msg4881002

author: tunk
author_rank: Super Contributor
timestamp: June 23, 2023, 10:04:20 am
content: Quote from: Hobby73 on June 22, 2023, 11:00:04 pmThe Zeeweii DSO154pro has much better specs and a lower price(but no component tester). If you don't need component tester,Fnirsi DSO152.

author: Fungus
author_rank: Super Contributor
timestamp: June 23, 2023, 12:21:49 pm
content: Quote from: tunk on June 23, 2023, 10:04:20 amYep. I've got a Zeeweii and it's really good.

author: RAPo
author_rank: Super Contributor
timestamp: June 23, 2023, 12:58:23 pm
content: Indeed.

author: Aldo22
author_rank: Super Contributor
timestamp: June 23, 2023, 02:34:01 pm
content: Quote from: tunk on June 23, 2023, 10:04:20 amYes, 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, theDSO1511Ghas 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 theDSO2512Gor theFnirsi DPOX180Hwhich also looks tempting, but I don't own one and for me the information about it is still contradictory.

author: Hobby73
author_rank: Regular Contributor
timestamp: June 23, 2023, 03:29:52 pm
content: The scope needs to display Duty Cycle or it's useless to me.

author: Aldo22
author_rank: Super Contributor
timestamp: June 23, 2023, 03:50:44 pm
content: Quote from: Hobby73 on June 23, 2023, 03:29:52 pmAfaik all these Zeeweii and Fnirsi mentioned can do that.

author: Hobby73
author_rank: Regular Contributor
timestamp: June 23, 2023, 07:29:17 pm
content: Quote from: Aldo22 on June 23, 2023, 03:50:44 pmI 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.

author: Aldo22
author_rank: Super Contributor
timestamp: June 23, 2023, 08:06:01 pm
content: Quote from: Hobby73 on June 23, 2023, 07:29:17 pmAll 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

author: Hobby73
author_rank: Regular Contributor
timestamp: June 25, 2023, 06:04:03 pm
content: Quote from: Aldo22 on June 23, 2023, 08:06:01 pmThe Zeeweii covers all the bases. Does it have a feature for Auto Scale like the Fnirsi has?

author: Aldo22
author_rank: Super Contributor
timestamp: June 25, 2023, 06:23:03 pm
content: Quote from: Hobby73 on June 25, 2023, 06:04:03 pmYes, 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

author: RAPo
author_rank: Super Contributor
timestamp: June 25, 2023, 06:24:42 pm
content: Yes it has an auto-button. And yes, you can display the duty cycle. See below for a square wave with +1,6% duty.

author: Fungus
author_rank: Super Contributor
timestamp: June 26, 2023, 12:18:11 am
content: Quote from: Hobby73 on June 25, 2023, 06:04:03 pmYes.Quote from: RAPo on June 25, 2023, 06:24:42 pmTry holding down the Auto button, it goes into auto-scale mode and continuously adapts the display to the signal.

author: delvo
author_rank: Contributor
timestamp: June 28, 2023, 02:09:18 pm
content: It looks like there is new firmware available:https://zotektools.com/firmware-update/"Optimized some functions and interfaces."I havent tried it yet