Paul said:
Darol Klawetter wrote:
Frequency range? 60 Hz, audio, MHz? Device parameters will change
significantly across these ranges.
10% is not much. I have a Radio Shack DVM that will do this on its
capacitance range. One can trade industrial quality for cheap enough to
drop and break occasionally. And just go out and buy another.
I have an LCR analyzer built around an AD5933 evaluation board. I think
those were selling for about $75 a few years back. But its home brew.
And don't ever buy this B model
http://www.amazon.com/BK-Precision-875B-Low-Ohm-Meter/dp/B000LDJ7L4
I had an "A" model which worked perfectly, incircuit and out, I would of
recommended it to any one. It got used and never returned back to me. I
had my employer get me another one. The "B" version replaces the "A" and
I can tell you it is a total re-engineered device that's not even close
to the quality of the "A" model.
It's intermitting at times when doing cap measurements and it has a
hard time doing in circuit testing. Not only that, you can not use each
scale to it's fullest, you have to select a scale that puts the expected
value at 50% or more, stated in the manual, otherwise no matter what
value you use it always seems to reach up around the 30% scale of min
reading, unless of course it is large enough to get into the working
area of the scale. I call that bad design work!
I had purchasing send that unit back for another, thinking it was
defective. Nothing could be that bad, but the new one came in and it too
was the same...
The basic Cap mode in my portable fluke (289) does much better than
this unit does for remote cap measurements.
I don't use it for serious work, it's a good thing I do have a more
serious unit to use for that.
Just another company and their products showing signs of the time (Greed).
Jamie
