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| UNI-T UT89XE: 20000 manual ranging counts of pure fun - impressions & teardown |
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| rsjsouza:
--- Quote from: indman on May 17, 2022, 02:10:29 pm --- --- Quote from: rsjsouza on May 17, 2022, 10:24:45 am ---Avelino, this is a nice showdown of the UT89XD. --- End quote --- UT89XD и UT89XE - These are completely different models in terms of characteristics, do not confuse them. :) --- End quote --- You are obviously 100% correct |O |
| Avelino Sampaio:
Today I decided to test if the least significant digit, in the 200m DC range, provides minimally reliable values. This range doesn't have much resolution, going down to 10µV. I used a 50µA current source to generate 20µV and 50µV voltages and the result was that I can trust the reading. The AN870 did well too, despite its last digit being irritatingly restless. |
| Avelino Sampaio:
--- Quote ---Regardless, the mechanical build and display are lightyears ahead of the AN870 indeed, but the durability of the rotary switch is still something that remains to be seen, since a manual range requires much more work from the switch. --- End quote --- Rafael, the vintage M840D is 22 years old with me and has only a small bad contact of the key, in the range of 2m of the DC current. Mechanically, I trust the Uni-t experience a lot. I'm getting rid of the Aneng gauges, as they have problems with the selector switches. This retro design of the UT89XE won me over and its ergonomics are incredibly good. I will keep my vintage M840D (2000 counts) in operation as it is in good health and it surprises me how it still has good accuracy. It uses the famous 40-pin ICL7106. I'll leave some images, by way of curiosity for newbies. |
| Avelino Sampaio:
Hi Finally a new quality multimeter (BM869S), purchased at Welectron. Here's a table I made, comparing different measurements. Very satisfied with the UT89XE. Its ergonomics are incredibly good. I already got rid of the Aneng 8002 and soon I intend to get rid of the aneng AN870. |
| Martin72:
--- Quote ---An Error Has Occurred! You are not allowed to access this section --- End quote --- Appears when I try to download the table file.. |
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