public Keithley2430(string resourceName)
 {
     Driver = new VisaDevice(resourceName);
     SMU_Channel = new Keithley2430Channel();
     SMU_Channel.Initialize(Driver);
     //SMU_Channel = new Keithley2430Channel(Driver);
 }
 public Keithley2430(string resourceName)
 {
     Driver      = new VisaDevice(resourceName);
     SMU_Channel = new Keithley2430Channel();
     SMU_Channel.Initialize(Driver);
     //SMU_Channel = new Keithley2430Channel(Driver);
 }