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Der EE De-5000 alternative

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2N3055:

--- Quote from: iet on December 23, 2022, 08:23:32 pm ---
--- Quote from: 2N3055 on December 23, 2022, 08:57:25 am ---Your cheaper alternative is UNi-T UT612. It is not 4-Wire (kelvin) but works well enough.

--- End quote ---
In my opinion, UNI-T UT622C has a 4-wire connection.
But it costs more.

--- End quote ---
UNI-T UT622C definitely has a 4-wire connection, but is more expensive.. But it seems a bit better instrument..

iet:

--- Quote from: 2N3055 on December 23, 2022, 08:45:07 pm ---But it seems a bit better instrument..

--- End quote ---
Yes, a little better.
http://unitrend.oss-cn-hongkong.aliyuncs.com/upload/file/20210615/UT622%20Datesheet.pdf

mawyatt:
Don't know if we were lucky or what, but the DE-5000 we have with a good stable SMD test fixture as shown, produces results comparable to our Hioki IM3536 and Tonghui TH2830 LCR Lab Bench Meters. The SMD fixture shown is just a cheap AliX that we modded for better stability. We also took an extra TL-21 and removed the alligator clips and carefully replaced with 4 coaxial cables and female BNCs as shown for true Kelvin sensing.

For example, we ran thru our COG caps (0603 & 0805) from 0.3pF to 1000pF that we use to characterize and check the LCR meters before making serious measurements (sanity check if you will). We used 10KHz and 100KHz and compared the DE-5000 to the TH2830 (10 Avg) after doing an Open and Short cal on both with the fixture in place.

Value (size)                    TH2830 @ 10KHz (DE-5000)         TH2830 @ 100KHz  (DE-5000)

0.3pF (0805)                  0.31678 (0.31)                             0.31614 (0.32)
1pF (0805)                     1.01954 (1.02)                             1.01657 (1.02)
4.7pF (0603)                  4.68814 (4.69)                             4.68440 (4.71)
10pF (0805)                   9.95328 (9.96)                             9.94757 (10.01)
100pF (0805)                 99.6967 (99.94)                           99.6819 (99.97)
1000pF (0805)               993.241 (995.4)                           992.724 (994.6)

Think these results speak for themselves, and better than we expected from a modestly priced handheld LCR meter, however YMMY.

Best and Happy Holidays,     

Martin72:

--- Quote ---Think these results speak for themselves
--- End quote ---

Indeed, for it´s price it´s hard to beat.
Or better, it couldn´t be beat.
The integrated chipset ( 2 ICs) performs well.

mawyatt:
Agree, it appears the 2 chip set used by the DE-5000 performs quite well indeed!! Would also expect very good reliability from such.

Best,

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