/// <summary>
        /// 获取对象实例
        /// </summary>
        /// <param name="spectrumAnalyzerType">仪表型号</param>
        /// <returns></returns>
        public static ISpectrumAnalyzer GetInstance(SpectrumAnalyzerType spectrumAnalyzerType)
        {
            switch (spectrumAnalyzerType)
            {
            case SpectrumAnalyzerType.Agilent_856X:
                return(new Agilent_856x());

            case SpectrumAnalyzerType.Agilent_ESA_E:
                return(new RS_FSU());

            case SpectrumAnalyzerType.Agilent_E4407B:
                return(new RS_FSU());

            case SpectrumAnalyzerType.RS_FSU:
                return(new RS_FSU());

            case SpectrumAnalyzerType.RS_FSW:
                return(new RS_FSU());

            case SpectrumAnalyzerType.Ceyear_4024D_403X:
                return(new Ceyear_4024D());

            default:
                return(null);
            }
        }
        private void btnSpeOpen_Click(object sender, RoutedEventArgs e)
        {
            SpectrumAnalyzerType type = (SpectrumAnalyzerType)(this.cmbSpeType.SelectedIndex);
            string addr = this.tbSpeAddr.Text;

            if (!isSpectrumMeterConnected)
            {
                spectrumAnalyzer         = SpectrumAnalyzer.GetInstance(type);
                isSpectrumMeterConnected = spectrumAnalyzer.Connect(addr);
                if (isSpectrumMeterConnected)
                {
                    this.btnSpeOpen.Background = sucessColor;
                }
                else
                {
                    this.btnSpeOpen.Background = normalColor;
                }
            }
            else
            {
                this.btnSpeOpen.Background = sucessColor;
            }
        }