New LCR meters, Zoyi ZT-DQ01 and ZT-DQ02 (March 2025)

[RAPo]

I got a virus warning on that site.

[jebem]

I got a virus warning on that site.

When i connect to the old website, I get a administrative msg with:
 "Sorry, the page you visited does not exist!
   Please double check that the URL you entered is correct.
   Home page"

[jebem]

I got a virus warning on that site.

On a second look, it seems that the old Chinese website uses a non secure connection, and that is a good reason to trigger alerts on security tools.

[zappa916]

g'dday folks,

New subscriber here and caught onto this thread cause im in the market for a LCR.  I currently have a 3-1 Zoyi dvm oscilloscope and reading whether the DQ01 or 02 is worthy to grab. It's either that or the DE-5000, with the ET431 running close behind.  What's the consensus so far?

[jebem]

g'dday folks,

New subscriber here and caught onto this thread cause im in the market for a LCR.  I currently have a 3-1 Zoyi dvm oscilloscope and reading whether the DQ01 or 02 is worthy to grab. It's either that or the DE-5000, with the ET431 running close behind.  What's the consensus so far?

I have ordered one ZT-DQ02 from AliExpress and payed just 71 EUR including shipment as it was on sale. Now it went up to 99 EUR.
It is coming may way and I expect to receive it in a few days.

This seems to be a low cost LCR meter with nice specifications on paper that would compete with other brands costing two or four more times.

From what I have been reading from testers on published videos and reviews, it may present a few bugs and quirks.
At the same time, it seems to be very precise when it operates outside the buggy zone, fulfilling the advertised specs.

However, these tests seems to have been done in a kind of random way, without a systematic approach, or in a controlled environment.
Still, they are very useful specially when they compare it side by side with other brands running the same measurement.

Some of the testers compare it to the DE-5000 (costing twice the price of the ZT-DQ02) or to the Tonghui TH2822D (costing more than four times).
The results seems to be basically similar.
However, for the (random) tested components done by the testers in those reviews, the ZT-DQ02 shows some erratic results, while the other brands don't.

As an example, this Chinese review shows some of these issues. He compares it to the TH2822D  used as a reference.
https://www.bilibili.com/video/BV1JfLczdEnu/?t=0.0

Can I live with the observed issues?
Yes, except for the 10MR reading that the ZT-DQ02 can't acquire correctly, no matter what settings the tester tried.

He didn't test resistors above 10MR either (at least on that video recording).
And he didn't calibrate the LCR meter, nor did a reset to factory defaults (as indicated in the user guide) to see the result.

The above video was posted on 20-April-2025, so he was probably running version 1.05.
Zotek / ZOYI have released several firmware versions after that, where the latest v1.08 is dated as of 29-May.
So, we don't know if the reported issues have been fixed.

[coromonadalix]

IF Zoyi is putting the efforts getting the FW bugs ironed out, it may get better at some point, i dont think perfection is possible,  well know  loll

De 5000 never got any fw updates if any, or possible,  others  i dont know,  the Hantek 1832 1833  did receive some,   there's a tons of handhelds out there

None so far received as much attention than this one 1.05 1.06 1.07 1.08  all under a 4-6 month period ...  maybe they slow down, stop trying to impress us ?  would be nice to get a log of all the updates since 1.05

if you can live with some quircks, good,  do keep in mind they are not bench ones, some brands have better specs in some measurement, all rely on circuits, designs, firmwares quality and frequent updates, alas not all of them do that...

I'm not a Zoyi fan boy, it's my 1st from them

[TheDefpom]

Zoyi sent me a DQ02 to review, I just got it in the mail so I will be doing a review video on it sometime in the next few weeks.

[LeonR]

Seems like there's a rebrand from ANENG, as LM06 (DQ01) and LM08 (DQ02).

https://www.aliexpress.com/item/1005009173709248.html

Weird enough, the "pro" version of those don't include the Kelvin clips, just the standard (on their multimeters) extra pair of test leads.

[jackobo]

folks, DQ-02 at its top kit with all leads about 60 euro now using summer sale discount coupon at aliexpress with free postage.

[coromonadalix]

Seems like there's a rebrand from ANENG, as LM06 (DQ01) and LM08 (DQ02).

https://www.aliexpress.com/item/1005009173709248.html

Weird enough, the "pro" version of those don't include the Kelvin clips, just the standard (on their multimeters) extra pair of test leads.

lol now Aneng branded, funny to see a suggested price  wayyyy higher than sold, psychological effect of saving tons of $

the pro kit is not worth it,  just shi#$^^ probes kit ....    for the kelvins,  some threads back you have a good compatible kit

[dmitrkov]

Perhaps someone else will also find it useful. I bought calibration resistors here https://www.aliexpress.com/item/1005008077044186.html and here https://www.aliexpress.com/item/1005008113029467.html.

I'm not sure if they are really 0.1%. But the seller assures me that they are. 2 out of 10 came with W(0,05%) instead of B(0,1%).
The meter without recalibration on firmware 1.0.5 shows everything within tolerance except the 10M nominal value

Photos: https://photos.app.goo.gl/gk8tEHPHLLxBcvFo7

[Propretor]

I bought calibration resistors here

Manual:
Notes:
a.Use non-inductive resistors for calibration. Do not use wound resistors.

[coromonadalix]

and the ones @dmitrkov used are non inductive .... witch is supposed to be good


@dmitrkov   have you tried with the latest FW version ?

[ass20]

anybody open ali disput for  additional send clibration resistors ?

zoyi have support ? or it like only our money ?

[Maksud]

Updated to version V 1.0.8.
I only did short circuit calibration. I checked it on SMD resistors with 1% accuracy and it shows everything within the tolerance.
But it doesn't measure 10M resistance at all and that's bad.
Buying high-precision resistors doesn't make much sense because the price of a high-precision resistor set will be like half the device. And if someone needs such accuracy, then this device is not for them. IMHO

Of the useful things, this is a good Kelvin bridge ZIBOO ZB-L100K (AliExpress product 1005007592063774) (enter the number in the search bar AliExpress)

[Aldo22]

Would you say that it is worth buying a ZT-DQ01 as a hobbyist, if you already have a ZT-MD1?
The specs (ranges) don't differ that much, afaics.
What are the advantages? How could I talk myself into it?

[RAPo]

well I must say the screen of the DQ1 is much better to read. But the real question is, do you need a 4-wire measurment?

Would you say that it is worth buying a ZT-DQ01 as a hobbyist, if you already have a ZT-MD1?
The specs (ranges) don't differ that much, afaics.
What are the advantages? How could I talk myself into it?

[jackobo]

But the real question is, do you need a 4-wire measurment?

Well, actually MD-1 is 4 wire measurement as well in tweezers form factor

[Aldo22]

Thank you!

well I must say the screen of the DQ1 is much better to read. But the real question is, do you need a 4-wire measurment?

Well, actually MD-1 is 4 wire measurement as well in tweezers form factor

So would you say that the DQ01 it's a bit more convenient and accurate, but doesn't provide that much more information for the hobbyist than the MD1?
Or have I missed something?

[jackobo]

So would you say that the DQ01 it's a bit more convenient and accurate, but doesn't provide that much more information for the hobbyist than the MD1?
Or have I missed something?

DQ series provides more features and measurement ranges than MD-1. In terms of precision I'd say them both are +- equal.

[FixyMixy]

Zoyi sent me a DQ02 to review, I just got it in the mail so I will be doing a review video on it sometime in the next few weeks.

It's VERY important to review 1.0.8 firmware!

Older firmware does NOT measure all resistors correctly (eg: 6.8-7.4 kOhm, 68-74 kOhm). That is because of a wrong range switching algorithm. For those resistors, the device showed 6% higher results from time to time in a random but deceptively confident manner.

[FixyMixy]

So would you say that the DQ01 it's a bit more convenient and accurate, but doesn't provide that much more information for the hobbyist than the MD1?
Or have I missed something?

4 wire measurement is good for accurate low impedance (below 10 mOhm). That's because of contact resistance fluctuation is excluded from measurement. But DQ01 does has just a 0.1 mOhm resolution in LCR mode.
100 kHz is good for low inductance measurement (below 10 uH)
See yourself, if you would use that much.

[Aldo22]

4 wire measurement is good for accurate low impedance (below 10 mOhm). That's because of contact resistance fluctuation is excluded from measurement. But DQ01 does has just a 0.1 mOhm resolution in LCR mode.

You don't really mean 0.1 mOhm, right? 

According to the specifications, only the upper limits are different (mF, H).
Neither can do nH.

10mΩ~10MΩ both
1pF~20mF vs. 1pF~100mF
1uH~60H vs. 1uH~100H

[FixyMixy]

You don't really mean 0.1 mOhm, right? 

Maximum resolution is indeed 0.1 mOhm (though displayed as 0.0001 Ohm) and 0.1 uH (100 nH).

[Aldo22]

Maximum resolution is indeed 0.1 mOhm (though displayed as 0.0001 Ohm) and 0.1 uH (100 nH).

You're right, I got things mixed up.
MD1 also has this resolution in the lowest range.