I've already set ADC REF as documented in the manual. The Voltage is
still off. There should be a procedure to set the voltage as there was
when I assembled this K3 (s/n 1450) several years ago. Unfortunately,
I can no longer find it in the current Owner's Manual or Assembly
Manual.
73,
... Joe, W4TV
On 11/24/2015 4:01 PM, Brian & Cyndi wrote:
Joe, if you just want to make the K3's voltmeter match your "known good"
reference meter, you need to adjust the "ADC REF" value.
Go into the CONFIG menu, set Tech mode "On", then go to the "ADC REF"
setting. Note what it is before changing anything, in case this
adjustment affects anything else adversely. Adjust the ADC REF value to
cause the voltmeter display to read the value you want. You will need to
go in and out of the menu display to see the results (kinda clumsy).
Again, this adjustment may affect other measurements, so an accurate K3
voltmeter may not be that important after all.
73,
Brian, W6FVI
On 11/24/2015 9:32 AM, Joe Subich, W4TV wrote:
It matters not if there is a series diode. The Voltmeter should
be calibrated to the input power. I remember that being the case
when I assembled my first K3.
73,
... Joe, W4TV
On 11/24/2015 11:02 AM, Michael Blake wrote:
Joe, is there not at least one diode junction or solid state switch
in series with the input power inside the K3?
Michael Blake - K9JRI
On Nov 24, 2015, at 10:06 AM, Joe Subich, W4TV <li...@subich.com>
wrote:
OK, I'm sure I am overlooking something simple but I can not find
(or remember) how to calibrate the voltage display in the K3.
I had to repair one of my Astron RS-35A power supplies for the first
time in 30 years (one of the diodes shorted) and when I put it back on
line I decided to double check the K3 Volts display against the actual
output of the supply. The K3 is reading about 0.2V less than the
supply voltage.
I've been over both the K3 Owner's Manual and the K3 Assembly
Instructions but can't find any reference to calibrating the voltage
display.
73,
... Joe, W4TV
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