Test/review of YZXStudio USB meter ZY1273

it has never been an issue to share link of online shops, it is not against the rules

No of course not, I just didn’t see the mention of the ZL1100 before I started to type my message.

The ZL1100 looks interesting, but is sold out. I have a couple of the ZL1000 load and all is the version without trimpot, the only one with trimpot I have is the one I reviewed and I usual do not use that one.

Nice review, once again :D More stuff to put on my wanted-list for testing materials...

But I have to say that the new ZL-1100 is pricey imho. But I'm getting one, I think.

I'm getting a ZY1271, I think, but I'm still looking at the ZY1273 reviewd here too...

What would be the best for testing USB-C stuff, like I use for testing my micro-usb cables?

since it has both typeC and uUSB i think your best bet is staying with 1271

Oh, I forgot to mention, I already own a 1230, 1231, 1266 and 1270, so micro-usb is not THAT important.

But I want to do passthrough measurements, so it'll be the 1271 I guess...

Arrived to me few moments ago, i think it was worth to share that indeed it is VOOC/DASH compliant


image upload

Does anybody have a link where i can buy a reasonably priced one of these usb power meters.

John.

Imho reasonably... Nowhere.

The cheapest I could find mine was from ebay 19.87 usd for the meter plus few cent less than 10usd for shipping

About 30 dollar is what I payed too.

Ok, I got few questions now, seems my unit is not able to set some of the parameters I have available in the options, to be more precise I cannot set any of the option from 14 to 19 (14 and 19 included) which are

14.Trickle charge current

15.Trickle charge delay

16.Over current protection

17.Under voltage protection

18.Over voltage protection

19.Over temperature protection

Withouth these the meter is just a normal meter with higher resolution

My fw is 3.30 Y1273 could someone check in his for me? Also if someone has the English manual and could share it somewhere would be great...

Got my YZ1271 and ZL1100 yesterday.

Haven't got a manual yet, so I need to figure out how they work.

But I've found something weird :
www.youtube.com/embed/dyca9Ytbf_w

The current on the load does not match the current on the meter

Now that i have my zy1273 i can say i like yours much more.

Anyway, if you have a decent multimeter and a USB plugs with terminals you could measure current and say which one is off.

Otherwise you could roughly say it by attaching an Android phone (i don't know anything about ios) with an app called Ampere or another called Accubattery, which measures fairly well (considering that is just an approximation) how much current it is flowing through the phone. This at least, considering the big difference in numbers will tell you which one to trust and which one recalibrate (if possible)

I don't know if yours can recalibrate i'm pretty sure 1273 is not thatconfigurable (pretty disappointed by it)

Something’s definitely up. Mine is fine with the ZY1271.

I own multiple YZXStudio's meters, which were all calibrated when I got them, and they all show the same difference between load and meter. I believe they can be recalibrated. Good thing I bought mine at Franky's eBay store, he's usually really good about these kinds of things.

Thanks, now I know I'm not going nuts :)

I meant user recalibrated, let's say you have proper DMM (like a top of the line Brymen, Fluke, Agilent) or a bench type you could use as reference, also a bench type Electronic load, you could recalibrate your own like some other stuff allows you to.

So, must be the load?

The ZL1100 does allow for current calibration so you could try that to match you ZY meters if you have a stable 2.7 amp power supply.

Haven't got that kind of precision equipment, I'm sad to say.

We should make some kind of general chit-chat thread about these kind of things, so we don't litter this review's thread too much.

You don’t need a lab power supply for that. I bet one of your many usb chargers has enough juice to put out 2.7 amps. Just put the ZY1271 in between the charger and load like in your video to check the current. There’s a Curr ref menu option in which you enter the current you see on the 1271.

Thanks for the advice man, this solved the issue.