http://elecraft.85.s1.nabble.com/voltmeter-offset-and-accuracy-in-K2-tp380698p380708.html
Sorry for the clumsy question.... ;-)
> I'm planning to use a little higher value trimmer, so I would be
> able to be more or less in a second. I let you know wich one I
> use... I would like the really smaller one (in size) that it can
> take not much space as the actual resistor.
>
> Le 05-07-24 à 09:03, W3FPR - Don Wilhelm a écrit :
>
>
>
>> Folks,
>>
>> After thinking about this voltmeter 'adjustment' a bit more, I
>> discovered I
>> had erred. The value of R10 should be INCREASED to make the
>> reading higher.
>> Sorry - I guess I had a 'senior moment' and got my head turned
>> around wrong.
>>
>> 73,
>> Don W3FPR
>>
>>
>>
>>
>>> -----Original Message-----
>>>
>>> Jean-Francois,
>>>
>>> You certainly could do that - it should not alter any other
>>> function that I
>>> am aware of. The current display can be trimmed by changing
>>> Control Board
>>> R7.
>>>
>>> R10 and R7 are 1% resistors, and that provides repeaability from
>>> one K2 to
>>> another - one could hand-pick from 5% resistors just as well.
>>> I personally would be concerned about leaving a trimmeer in place
>>> because of
>>> the possibility of the setting being changed, but certainly using
>>> a trimmer
>>> to determine the exact value required would be an easy method.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>>
>>>
>>>
>>>> -----Original Message-----
>>>>
>>>> Hi Don,
>>>>
>>>> You said : "By lowering the value of R10 ..." Could I just put a
>>>> trimmer near that value instead of R10 and tune the trimmer so that
>>>> the voltage displayed match more closer the real external
>>>> voltage ???
>>>>
>>>> And could I do limilar thing with the current display ???
>>>>
>>>> I don't want to be more catholic than the Pope, but is it
>>>> possible to
>>>> do those mods ???
>>>>
>>>> Best 73 from a junior ;-)
>>>>
>>>> Le 05-07-23 à 18:56, W3FPR - Don Wilhelm a écrit :
>>>>
>>>>
>>>>
>>>>
>>>>> Steve,
>>>>>
>>>>> Although some have been confused by the readings at first, I don't
>>>>> see any
>>>>> advantage in modifying the internal voltmeter to read the external
>>>>> supply
>>>>> voltage - what it reads is the actual voltage the K2 is operating
>>>>> at - but
>>>>> if changing it is your choice, by all means do it - it should be a
>>>>> simple
>>>>> task of padding R10 (or lowering its value a bit).
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> ======
>>>>
>>>> Jean-François Ménard / VA2VYZ
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>> --
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>>
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>
> ======
>
> Jean-François Ménard / VA2VYZ
>
> ======
>
>
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