Bargraph Current Test (K-2)

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Bargraph Current Test (K-2)

Dennis Vavra
In conducting the Bargraph Current Test on Page 47 of K2 manual,  step 4 of the test, my reading
was E15.3, 0.08   and the raading on step 6 was E14.3, 0.02. Step 6 reading says it should be higher
than the step 4 reading  0.16 to 0.18 amps. Iv'e conducted the test multiple times and cant understand
why the indications are reversed.
Dennis Vavra,  AD5LY
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RE: Bargraph Current Test (K-2)

Don Wilhelm-3
Dennis,

First of all, you voltage is dropping a full volt (unless that was a typo),
and strange readings like that are usually the result of poor solder
connections.  Reflow all your solder connections, adding a bit of flux from
new solder to wet the joint.  You should be doing the reflow with an iron
set between 700 and 800 degrees.  If you have a goodly blob of solder on the
joints already, clean it up with solder wick and add just a touch of new
solder - use a solder diameter of .015 if you have it available, but no
greater than .02 inches - the larger diameter solder does not allow you to
control the amount of solder easily, by the time it melts you already have
applied too much.

73,
Don W3FPR

> -----Original Message-----
>
> In conducting the Bargraph Current Test on Page 47 of K2 manual,
> step 4 of the test, my reading
> was E15.3, 0.08   and the raading on step 6 was E14.3, 0.02. Step
> 6 reading says it should be higher
> than the step 4 reading  0.16 to 0.18 amps. Iv'e conducted the
> test multiple times and cant understand
> why the indications are reversed.
> Dennis Vavra,  AD5LY
>
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