The measurement is quite accurate, and the ADC reference is OK. Sorry I didn't point that out originally. I did get some data from Gary, which shows that his K3 current meter is much more accurate than mine.
The meter accuracy itself isn't really important, but the error may be limiting output power, as the High Current error occurs at a lower current than intended. 73, Scott K9MA On Feb 28, 2011, at 3:40 PM, Guy Olinger K2AV wrote: > And your reason for presuming the "actual current" at 23 A is ????. What > are you using to measure that? The meter on your power supply? A Fluke > meter that has a 25A range or ? > > First calibrate ADC REF on the K3 CONFIG menu (TECH MD must first be set to > "on") per the procedure on page 53 of the manual. You can scan for the > manual's pdf file for ADC REF . > > This calibration sets up a reference voltage inside the K3. But do it with > an accurate DVM. Then see what the K3's internal shunt voltage is reading. > That's what you are actually seeing. > > 73, Guy. > > On Mon, Feb 28, 2011 at 12:48 PM, Scott Ellington > <[email protected]> wrote: > Has anyone compared the K3 internal current meter to an accurate external > meter? My K3 meter reads about 20A, when the actual current is 23 A, with no > accessories connected. That's a huge error, and it's not linear. > > 73, > > Scott K9MA > Scott Ellington Madison, Wisconsin USA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
