Fix bug where multiple threads modify same variable at the same time. Perform some refactoring

Source/Program/Program.MeasurementManager.cs

@@ -15,21 +15,11 @@ GOVERNMENT.
 
 UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.
 -------------------------------------------------------------------------*/
-using Raytheon;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-using Raytheon.Instruments;
-using Raytheon.Common;
-using NLog;
-using System.Windows.Interop;
-using ProgramLib;
-using NationalInstruments.TestStand.Interop.API;
-using System.Runtime.ExceptionServices;
 using MeasurementManagerLib;
+using Raytheon.Instruments;
 
 namespace ProgramLib
 {
@@ -41,7 +31,7 @@ namespace ProgramLib
       private ProgramGuiManager _guiManager = null;
 
       internal bool _isUutPwrOn = false;
-      internal PowerSupplySharedData _powerSupplySharedData = new PowerSupplySharedData();
+      internal PowerSupplySharedData PowerSupplySharedData { get; set; }
 
       /// <summary>
 		/// Initialize power supply measurement manager
@@ -52,6 +42,7 @@ namespace ProgramLib
       {
          try
          {
+            PowerSupplySharedData = new PowerSupplySharedData();
             MalMeasurementLibManager.InitializePowerSupplyMeasurementManager();
          }
          catch (Exception ex)