Index: sources/model/MAbstract.h
===================================================================
diff -u -ra89b5249df072be403141463d7d88728b66a848e -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9
--- sources/model/MAbstract.h	(.../MAbstract.h)	(revision a89b5249df072be403141463d7d88728b66a848e)
+++ sources/model/MAbstract.h	(.../MAbstract.h)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
@@ -1,15 +1,15 @@
 /*!
  *
- * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+ * Copyright (c) 2020-2024 Diality Inc. - All Rights Reserved.
  * \copyright
  * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
  * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
  *
- * \file MAbstract.h
- * \author (last) Behrouz NematiPour
- * \date (last) 16-Oct-2020
- * \author (original) Behrouz NematiPour
- * \date (original) 02-Jul-2020
+ * \file    MAbstract.h
+ * \author  (last)      Behrouz NematiPour
+ * \date    (last)      04-Aug-2021
+ * \author  (original)  Behrouz NemaiPour
+ * \date    (original)  02-Jul-2020
  *
  */
 
@@ -57,7 +57,7 @@
 
 private:
     const char _delimiter = ',';
-    quint8     _precision =   2;
+    quint8     _precision =   3;
 
 public:
     enum class Type_Enum {
@@ -69,21 +69,41 @@
         eUI,
         eHD,
         eDG,
+        eDV,
     };
 
 private:
-    const QMap<Type_Enum,QString> _typeText {
-        {Type_Enum::eDatum, "D"},
-        {Type_Enum::eEvent, "E"}
-    };
+    typedef QMap<Type_Enum,QString> TypeMap;
+    static const TypeMap _typeText;
+    static const TypeMap _typeText_make() {
+        static const TypeMap map {
+            {MAbstract::Type_Enum::eDatum, "D"},
+            {MAbstract::Type_Enum::eEvent, "E"}
+        };
+        return map;
+    }
 
-    const QMap<Unit_Enum,QString> _unitText {
-        {Unit_Enum::eUI, "UI"},
-        {Unit_Enum::eHD, "HD"},
-        {Unit_Enum::eDG, "DG"}
-    };
+    typedef QMap<Unit_Enum,QString> UnitMap;
+    static const UnitMap _unitText;
+    static const UnitMap _unitText_make() {
+        static const UnitMap map {
+            {MAbstract::Unit_Enum::eUI, "UI"},
+            {MAbstract::Unit_Enum::eHD, "HD"},
+            {MAbstract::Unit_Enum::eDG, "DG"},
+            {MAbstract::Unit_Enum::eDV, "DV"}
+        };
+        return map;
+    }
 
 public:
+    static const QString unitText(const Unit_Enum &vEnum) {
+        return _unitText[vEnum];
+    }
+    static const QString typeText(const Type_Enum &vEnum) {
+        return _typeText[vEnum];
+    }
+
+
     // the model needs to implement these since each model have different meaning of the bytes from different source(unit).
 
     /*!