If you do not have a frequency counter, there is another way.
Use XG3 Utility to set the XG3 to provide a 10 MHz output.
Listen to the 10 MHz reference in your receiver in CW mode and peak the signal at your sidetone pitch. Then listen to the XG3 without touching the receiver. Adjust the XG3 software parameters to produce a signal at *exactly* the same sidetone pitch.


73,
Don W3FPR

On 9/18/2016 5:25 PM, ng7m wrote:
Hi, normally, you would drive a frequency counter with your 10mhz GPSDO
output... i.e. you need to have a frequency counter that accepts a 10mhz
input as a reference.  Then you would measure the output of the XG3 for any
given frequency and adjust the parameters in the software that programs the
crystal offset in the XG3 firmware.  You can find some good deals on an HP
5384A on flea-bay for example... if you look around.

Just make sure you don't over drive your frequency counter based on the peak
to peak voltage output from the XG3.  The same holds true for the output
from your GPSDO into your frequency counter... make sure the PVP output
meets the frequency counter specification.

Max NG7M



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