[Elecraft] voltage

[Don Wilhelm]

Marshall,

There is no adjustment - The voltage measuring circuits are usually 
quite accurate (fixed with 1% resistors).

1 volt is a lot of difference.  Normally there will be a 0.3 volt 
difference between the actual power supply voltage and the voltage 
internal to the K2 because of the voltage drop across the reverse 
polarity protection diode D10 and there may be a bit of voltage drop 
across F1 (the resettable fuse).
If you really have a 1 volt drop, you should look for a bad solder 
connection in the DC supply line.

Also, where are you measuring the  voltage?  If you are measuring it 
directly at the power supply, examine the connecting cable carefully and 
be certain its connection to the power supply is tight - loose 
connections will cause a significant voltage drop which varies with the 
current drawn.

73,
Don W3FPR

William Marshall Denny II wrote:
> Hello to all,
> A annoyance with my k2 is that the voltage reading when I tap the 
> display button reads 1 full volt low comparied to both of my multimeters.
> Is there a way to adjust for this error?
>