[Elecraft] Using Digital VM? (Control Board K2 # 5422)

[Don Wilhelm]

I is not meant to confuse anyone, but must take into consideration all
possible variables.

If one were to look at the schematic and understand which components are
installed and which are not at the point when you make those measurements,
you will understand why the readings are so high - many of the early checks
are for signal paths that go off the board and they are connected to
nothing - so you should read an 'infinite' resistance - the real reason for
the check is to be certain there is nothing shorted.

So why does the manual indicate '>100k' when the actual expected resistance
should be infinite? you may want to ask.  I don't know for certain, but I
would not put out a kit that would be tested with a large variety of DMMs
and state it any other way - there is no way that the manual writer can
predict how your particular DMM will respond to an open circuit, plus, if
one gets a part of his body in contact with the path being measured, the DMM
will likely indicate some actual resistance, I have one that reads abotu
400K across my finger, and I have another that reads about 3 megohms - of
course that depends on how much moisture I have on my skin too.  So ther is
no way to communicate properly for all meters and measurement situations
other than to state that a reading above 100k is just fine.

73,
Don W3FPR

> -----Original Message-----
>
> I've always been confused by this kind of direction.
> For example:
>
> 101k is also greater than 100K, but what's better:
> 101k or infinity?  Infinity could also indicate an
> unsoldered circuit board connection or that someone
> inserted a capacitor where a resistor should have
> gone.
>
> ">100k, as high as infinity" or ">100k, 180k typical"
> help me a lot more, where it's possible to state it.
>
> 73,
>
> Ken Alexander
> VE3HLS
>