630 mV pk-pk would be exactly 0.224 Vrms. matt W6NIA
On Sun, 12 Feb 2012 19:52:06 +0100, you wrote: > >Thanks for this info. Now, please pardon my total ignorance in using >these instrument. If the scope has an input impedance of 1 Mohm, do I >still need to use the probe, or can I just use the BNC T ? I have the 50 >ohm dummy on the other side of the T of course. >With the scope directly connected, I read slightly over 600 mV peak to >peak. Should be almost there, right? > >Pf > > > > >>>>>> "Gunnar" == Gunnar Widell <sm3...@kkn.net> writes: > > > Gunnar> I also have the same problem. I got this information from Elecraft > Gunnar> support, but I have not been able to test yet since the radio is > remote > Gunnar> (Running K3 Twin with Remoterig). See below: > > Gunnar> Connect a bnc tee to the XVTR OUT jack, and a 50 ohm load or > resistor to > Gunnar> one side of the tee. > > Gunnar> Then use an RF probe to see if there is at least 0.224Vrms at the > other > Gunnar> side of the tee. You could use an oscilloscope to do the > measurement > Gunnar> too, but convert 0.224Vrms to peak to peak voltage for the scope. > > Gunnar> Use Tune if the K3 Utility automated TX Gain calibration does not > work. > > Gunnar> Also, have a look in the manual, "Calibration Procedures" 1.0 > Milliwatt > Gunnar> Meter Calibration. > > Gunnar> 73 de Gunnar SM3SGP @ SK3W > > Gunnar> Robert Bajuk skrev 2012-02-12 18:51: > >> I do have the same problem with TX Gain Calibration, 5w and 50w > calibration > >> goes well, but 1mW calibration fails, I am getting the error something > >> like: "Power set to 0.1 mW, 1.9 MHz, TX gain calibration failed because > >> transmit power did not reach the expected value". > >> > >> I did reload FW, EE INIT, settings restore, nothing helps. > >> > >> KXV3A is enabled and set to normal in config, no jumpers on W1 and W2, > 50 > >> Ohm dummy load on XVTR Out is OK. XV144 does not work properly, I > believe > >> that is connected with XVTR Out problems. XVTR parameters in config are > set > >> correctly. > >> > >> Any ideas? > >> > >> 73 Robert > >> > >> 2012/2/12 Don Wilhelm<w3...@embarqmail.com> > >> > >>> Did you forget to cut the jumpers when you installed the KXV3A? > >>> > >>> 73, > >>> Don W3FPR > >>> > >>> On 2/12/2012 11:22 AM, Pierfrancesco Caci wrote: > >>>> I get the following error when trying the 1 mW calibration for a > freshly > >>>> installed KXV3A: > >>>> > >>>> Starting 1 milliwatt calibration. > >>>> Calibrating at 1.900 MHz > >>>> IsSamplingComplete: Unexpected response 'DB 0.10 MW;' to ''. State 220 > >>>> Calibration power settled at ' 0.10 MW;' > >>>> 1 milliwatt calibration failed. > >>>> Elapsed time: 19.2 secs > >>>> > >>>> > >>> ______________________________________________________________ > >>> Elecraft mailing list > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >>> Help: http://mailman.qth.net/mmfaq.htm > >>> Post: mailto:Elecraft@mailman.qth.net > >>> > >>> This list hosted by: http://www.qsl.net > >>> Please help support this email list: http://www.qsl.net/donate.html > >>> > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > > Gunnar> ______________________________________________________________ > Gunnar> Elecraft mailing list > Gunnar> Home: http://mailman.qth.net/mailman/listinfo/elecraft > Gunnar> Help: http://mailman.qth.net/mmfaq.htm > Gunnar> Post: mailto:Elecraft@mailman.qth.net > > Gunnar> This list hosted by: http://www.qsl.net > Gunnar> Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
