Review - UNI-T UT81B Scope / Meter - diyAudio
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Old 1st December 2009, 07:58 PM   #1
jleaman is offline jleaman  Belgium
Join Date: Apr 2002
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Default Review - UNI-T UT81B Scope / Meter

For Christmas my Fiance asked me what i wanted, I asked her to get me a Uni-T Scope hand held meter, It's only 10mhz but that is all i need for audio.

I got the meter a few days ago and have been playing with it and the software, for 190$ im pretty impressed, it's not heavy at all, takes 4 AA batteries, and has a very bright and crisp clean display that is really easy to read.

the unit was purchased from mib-instrument's.

UNI-T UT81B 40MSa/s Oscilloscope digital multimeter

I can post pictures if people want to see better pictures.

Click the image to open in full size.
Click the image to open in full size.

Soon i will be purchasing a Function gen & 2 more desktop meter's ( witch i want )

This has been my second purchase from this good company.
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Old 25th March 2010, 05:46 PM   #2
diyAudio Member
Join Date: Mar 2010
Default USB interface useful?

Hi jleaman,
I wonder if you can tell me what sort of data is available via the USB connection on this device?
Can you grab scope waveforms? Or just multimeter readings?
What sort of PC software comes with it to support the USB interface?
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Old 10th April 2011, 06:04 PM   #3
diyAudio Member
Join Date: May 2010
Location: North-eastern England
Default UNI-T ut-81b

Got my ut-81b yesterday and am well pleased with it; it's a pity there was no 'scope probe lead but for the price (125 inclusive) I suppose it won't kill me to spend a few more 's on a 10 MHz probe.

A very serious omission, though, is that of a probe compensation adjustment signal output; there must be a suitable rectangular wave signal available within the 'scope's circuits and a simple buffer would add a very few pennies to the cost?

That whinge apart it's great value; providing as it does the functions of a portable 'scope cum multimeter and those of a bench 'scope when tethered to a computer - sadly only for Windows users; those of us using Linux or O S X, will have to downgrade to an inferior O S!
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Old 6th June 2011, 10:38 PM   #4
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Join Date: Sep 2010
Hey can any of you guys crack it open and take a few pictures? Or is that not possible. I'd like to see some example of its build quality.
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Old 7th June 2011, 05:33 PM   #5
diyAudio Member
Join Date: May 2010
Location: North-eastern England
Default UT 81B

I opened mine up the day it arrived and it looked to be well built with decent quality components on a good-looking PCB - only time and use will tell tho'!!

I'll take some pics tomorrow or the day after (busy, busy!) and if I can fathom out how to attach/link them I'll gladly do so.
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Old 10th June 2011, 09:16 PM   #6
diyAudio Member
Join Date: Sep 2010
Thanks. I've seens a wide variety of build quality from Uni-T. From absolutely terrible to golden Fluke standards. I'm hoping this one will be more of the latter than the first.

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Old 11th June 2011, 07:47 AM   #7
diyAudio Member
Join Date: May 2010
Location: North-eastern England
Mine looks up to Fluke standards; certainly nothing like some I've seen that look as tho' component placement was by a shotgun at a range of 4 feet!

I've got a couple of pics but do not know how to link them to this site
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Old 11th June 2011, 02:57 PM   #8
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Join Date: Sep 2010
Oh I'll tell you how.

Click "Post Reply"
Underneath the reply box, go to "Additional Options"
Click "Manage Attachments"
Click "Browse" and select the picture you want
When you are done, Click "Upload"
When it is finished, close the box and "Submit Reply"
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Old 12th June 2011, 05:22 PM   #9
diyAudio Member
Join Date: May 2010
Location: North-eastern England
Thanks for the help with the attachments

I hope they help you to decide to buy one.
Attached Images
File Type: jpg HPIM0069A.jpg (152.3 KB, 322 views)
File Type: jpg HPIM0071A.jpg (181.8 KB, 282 views)
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Old 13th June 2011, 02:17 AM   #10
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Join Date: Sep 2010
Thank you for the great shots.

They have some nice tatalums on there. Only thing I might be concerned with is its protection circuit which I can't quite see from the pictures. I do see a single glass fuse. Usually I'd prefer to see atleast a ceramic, but I guess I'm being picky.
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