Fixed the initial ADC read value problem - the values are to shaking around.

firmware/command_ctrl.ino

@@ -200,6 +200,13 @@ void cc_startMeasurement()
   {
     si5351.drive_strength(SI5351_CLK0, drive_str); // 2 4 6 8ma
 
+    uint8_t t = 0;
+    for (t = 0; t < 200; t++)
+    {
+      uint16_t tmp = analogRead(A0);
+               tmp = analogRead(A1);
+    }
+
     uint32_t freq = 0;
     for (freq = start_freq; freq < end_freq; freq += step_freq)
     {

tools/meas.py

@@ -520,7 +520,6 @@ if __name__ == "__main__":
             plt.plot(meas_freq, meas_ratio)
             plt.plot(meas_freq, meas_r)
             plt.plot(meas_freq, meas_p)
-            print meas_r
 
             print "Please close the mathplot window to exit..."
             plt.show()