[Elecraft] Config: ADC REF (revisited

[Brett Howard]

Well use your DMM and measure the resistance of your power cord.  Then
look at the current consumption of the K3.  Then multiply these values
together.  Good ole ohms law (v=i*r).  If you end up getting about .16V
then there is your drop...

~Brett

On Wed, 2009-08-19 at 22:38 -0700, Robin Diane Goldstein wrote:
> wondering what this means:
> 
> with the latest beta firmware i measured the voltage across ACC pin 2 
> and ground and got 4.95v on my dmm...  i then set that number into 
> the Config:ADC REF setting.
> 
> my K3 now shows the supply voltage as being 13.6 volts, but when i 
> measure the supply at the output of my PS it shows 13.76...  the 
> cable is only about 12 inches, so that seems like a pretty steep drop.
> 
> am i missing something?  (probably something about ohms law and a 
> missing decimal point?)
> 
> cheers!
> robin (K9RDG)
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