Index: firmware/App/Modes/OperationModes.c
===================================================================
diff -u -r1a5efe97f5f39594b45797fded52cafce92afe80 -r6818dafc0839d6e8585f5e6f35013f539ad5a0ed
--- firmware/App/Modes/OperationModes.c	(.../OperationModes.c)	(revision 1a5efe97f5f39594b45797fded52cafce92afe80)
+++ firmware/App/Modes/OperationModes.c	(.../OperationModes.c)	(revision 6818dafc0839d6e8585f5e6f35013f539ad5a0ed)
@@ -47,6 +47,8 @@
 static DG_OP_MODE_T lastMode = DG_MODE_INIT;                                        ///< Last operation mode prior to current mode.
 static DG_OP_MODE_T currentMode = DG_MODE_INIT;                                     ///< The currently active mode.
 static U32 currentSubMode = 0;                                                      ///< The currently active state of the active mode.
+/// DG operation mode data publish interval.
+static OVERRIDE_U32_T dgOpModePublishInterval = { BROADCAST_DG_OP_MODE_INTERVAL, BROADCAST_DG_OP_MODE_INTERVAL, 0, 0 };
 static U32 broadcastModeIntervalCtr = 11;                                           ///< Interval counter used to determine when to broadcast operation mode.  Initialize to 11 to stagger broadcast.
 
 /// This matrix determines legal transitions from one mode to another.
@@ -71,6 +73,7 @@
 
 static DG_OP_MODE_T arbitrateModeRequest( void );
 static void transitionToNewOperationMode( DG_OP_MODE_T newMode );
+static U32  getDGOpModePublishInterval( void );
 static void broadcastOperationMode( void );
 
 /*********************************************************************//**
@@ -345,11 +348,84 @@
  *************************************************************************/
 static void broadcastOperationMode( void )
 {
-    if ( ++broadcastModeIntervalCtr >= BROADCAST_DG_OP_MODE_INTERVAL )
+    if ( ++broadcastModeIntervalCtr >= getDGOpModePublishInterval() )
     {
         broadcastModeIntervalCtr = 0;
         broadcastDGOperationMode( (U32)currentMode, currentSubMode );
     }
 }
 
+/*********************************************************************//**
+ * @brief
+ * The getDGOpModePublishInterval function gets the current DG operation mode
+ * data publish interval.
+ * @details Inputs: dgOpModePublishInterval
+ * @details Outputs: DG operation mode broadcast message sent
+ * @return none
+ *************************************************************************/
+static U32 getDGOpModePublishInterval( void )
+{
+    U32 result = dgOpModePublishInterval.data;
+
+    if ( OVERRIDE_KEY == dgOpModePublishInterval.override )
+    {
+        result = dgOpModePublishInterval.ovData;
+    }
+
+    return result;
+}
+
+
+/*************************************************************************
+ *                       TEST SUPPORT FUNCTIONS
+ *************************************************************************/
+
+
+/*********************************************************************//**
+ * @brief
+ * The testSetDGOpModePublishIntervalOverride function overrides the
+ * DG operation mode publish interval.
+ * @details Inputs: none
+ * @details Outputs: dgOpModePublishInterval
+ * @param value override DG operation mode publish interval with (in ms)
+ * @return TRUE if override successful, FALSE if not
+ *************************************************************************/
+BOOL testSetDGOpModePublishIntervalOverride( U32 value )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        U32 intvl = value / TASK_GENERAL_INTERVAL;
+
+        result = TRUE;
+        dgOpModePublishInterval.ovData = intvl;
+        dgOpModePublishInterval.override = OVERRIDE_KEY;
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testResetDGOpModePublishIntervalOverride function resets the
+ * override of the DG operation mode publish interval.
+ * @details Inputs: none
+ * @details Outputs: dgOpModePublishInterval
+ * @return TRUE if override reset successful, FALSE if not
+ *************************************************************************/
+BOOL testResetDGOpModePublishIntervalOverride( void )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        result = TRUE;
+        dgOpModePublishInterval.override = OVERRIDE_RESET;
+        dgOpModePublishInterval.ovData = dgOpModePublishInterval.ovInitData;
+    }
+
+    return result;
+}
+
 /**@}*/
Index: firmware/App/Modes/OperationModes.h
===================================================================
diff -u -r0c3e4f0618d7e42f35386fe5acf450fbb61481b6 -r6818dafc0839d6e8585f5e6f35013f539ad5a0ed
--- firmware/App/Modes/OperationModes.h	(.../OperationModes.h)	(revision 0c3e4f0618d7e42f35386fe5acf450fbb61481b6)
+++ firmware/App/Modes/OperationModes.h	(.../OperationModes.h)	(revision 6818dafc0839d6e8585f5e6f35013f539ad5a0ed)
@@ -39,6 +39,9 @@
 DG_OP_MODE_T getCurrentOperationMode( void );           // get the current operation mode
 DG_OP_MODE_T getPreviousOperationMode( void );          // get the previous operation mode
 
+BOOL testSetDGOpModePublishIntervalOverride( U32 value );
+BOOL testResetDGOpModePublishIntervalOverride( void );
+
 /**@}*/
 
 #endif
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r4703ecb3194b11c65d33602940315f262ef7ac27 -r6818dafc0839d6e8585f5e6f35013f539ad5a0ed
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 4703ecb3194b11c65d33602940315f262ef7ac27)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 6818dafc0839d6e8585f5e6f35013f539ad5a0ed)
@@ -1258,6 +1258,10 @@
                 handleSetFluidLeakStateDetectorOverrideRequest( message );
                 break;
 
+            case MSG_ID_DG_OP_MODE_PUBLISH_INTERVAL_OVERRIDE:
+                handleSetDGOpModeBroadcastIntervalOverrideRequest( message );
+                break;
+
             default:
                 // TODO - unrecognized message ID received - ignore
                 break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r4703ecb3194b11c65d33602940315f262ef7ac27 -r6818dafc0839d6e8585f5e6f35013f539ad5a0ed
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 4703ecb3194b11c65d33602940315f262ef7ac27)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 6818dafc0839d6e8585f5e6f35013f539ad5a0ed)
@@ -2985,6 +2985,38 @@
 
 /*********************************************************************//**
 * @brief
+* The handleSetDGOpModeBroadcastIntervalOverrideRequest function handles a request
+* to override the publish interval of the DG operation mode.
+* @details Inputs: none
+* @details Outputs: message handled
+* @param message a pointer to the message to handle
+* @return none
+*************************************************************************/
+BOOL handleSetDGOpModeBroadcastIntervalOverrideRequest( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // verify payload length
+    if ( sizeof( TEST_OVERRIDE_PAYLOAD_T ) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof( TEST_OVERRIDE_PAYLOAD_T ) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetDGOpModePublishIntervalOverride( payload.state.u32 );
+        }
+        else
+        {
+            result = testResetDGOpModePublishIntervalOverride();
+        }
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
+/*********************************************************************//**
+* @brief
 * The handleROPumpTargetPressureOverride function handles a request
 * to override the RO pump target pressure.
 * @details Inputs: none
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r4703ecb3194b11c65d33602940315f262ef7ac27 -r6818dafc0839d6e8585f5e6f35013f539ad5a0ed
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 4703ecb3194b11c65d33602940315f262ef7ac27)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 6818dafc0839d6e8585f5e6f35013f539ad5a0ed)
@@ -370,6 +370,9 @@
 // MSG_ID_DG_START_STOP_CHEM_DSINFECT
 BOOL handleStartStopDGChemicalDisinfect( MESSAGE_T *message );
 
+// MSG_ID_DG_OP_MODE_PUBLISH_INTERVAL_OVERRIDE
+BOOL handleSetDGOpModeBroadcastIntervalOverrideRequest( MESSAGE_T *message );
+
 /**@}*/
 
 #endif