private void ReadSf()
 {
     Settings.OneByteTransmitTimeUs =
         EndNode.GetByteTimeUsBySf(
             (uint)numericUpDownSf.Value);
 }
 private void ShowOnePacketLengthMs()
 {
     labelOnePacketLengthMs.Text =
         EndNode.GetOnePacketTransmitTimeMs().ToString();
 }