private void OnHoldMode_CheckedChanged(object sender, EventArgs e)
        {
            if (m_objAnalyzer == null)
            {
                return;
            }

            m_objAnalyzer.HoldMode = m_chkHoldMode.Checked;
            if (m_objAnalyzer.HoldMode)
            {
                //Send hold mode to RF Explorer to stop RS232 traffic
                m_objAnalyzer.SendCommand_Hold();
            }
            else
            {
                //Not on hold anymore, restore RS232 traffic
                m_objAnalyzer.SendCommand_RequestConfigData();
            }

            OnHoldModeChangeEvent(new EventArgs());
        }