Index: firmware/App/Services/FPGA.c
===================================================================
diff -u -rb36fc8801adfc9d2f402450abffe721e71f9a5e5 -r359f9350ad9b2156ce02c94fa4950c4fb6768572
--- firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision b36fc8801adfc9d2f402450abffe721e71f9a5e5)
+++ firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision 359f9350ad9b2156ce02c94fa4950c4fb6768572)
@@ -333,10 +333,10 @@
 static FPGA_SENSORS_ASYNC_T  fpgaSensorReadingsAsync;                   ///< Record of last received async (as needed) FPGA sensor data.
 #endif
 
-#ifndef DEBUG_ENABLED
+//#ifndef DEBUG_ENABLED TODO: uncomment it DN-15SEPT2022
 static U16 currentFPGATimerCount_ms;                                       ///< Current FPGA timer count in ms.
 static U32 currentTimerCount_ms;                                           ///< Current processor timer count in ms.
-#endif
+//#endif
 
 // ********** private function prototypes **********
 
@@ -971,7 +971,7 @@
  *************************************************************************/
 void execFPGAClockSpeedTest( void )
 {
-#ifndef DEBUG_ENABLED
+//#ifndef DEBUG_ENABLED   TODO: uncomment it DN-15SEPT2022
     U16 const newFPGATimerCount_ms = getFPGATimerCount();
     U32 const newTimerCount_ms = getMSTimerCount();
     U32 const diffFPGATimerCount = (U32)u16DiffWithWrap( currentFPGATimerCount_ms, newFPGATimerCount_ms );
@@ -981,13 +981,16 @@
     {
         if ( abs( diffFPGATimerCount - diffTimerCount ) > PROCESSOR_FPGA_CLOCK_DIFF_TOLERANCE )
         {
-            SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_FPGA_CLOCK_SPEED_CHECK_FAILURE, diffFPGATimerCount, diffTimerCount );
+            if ( TRUE == incTimeWindowedCount( TIME_WINDOWED_COUNT_FPGA_CLOCK_SPEED_ERROR ) )   // DN-16SEPT2022
+            {
+                SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_FPGA_CLOCK_SPEED_CHECK_FAILURE, diffFPGATimerCount, diffTimerCount );
+            }
         }
     }
 
     currentFPGATimerCount_ms = newFPGATimerCount_ms;
     currentTimerCount_ms = newTimerCount_ms;
-#endif
+//#endif
 }
 
 /*********************************************************************//**
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -re54806da466a8c52e19fd272356dbbfde04171fd -r359f9350ad9b2156ce02c94fa4950c4fb6768572
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision e54806da466a8c52e19fd272356dbbfde04171fd)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 359f9350ad9b2156ce02c94fa4950c4fb6768572)
@@ -57,6 +57,9 @@
 #define MSG_NOT_ACKED_MAX_RETRIES       3       ///< Maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
 #define PENDING_ACK_LIST_SIZE           25      ///< Maximum number of Denali messages that can be pending ACK at any given time
 
+#define MAX_FPGA_CLOCK_SPEED_ERRORS             3                                     ///< maximum number of FPGA clock speed errors within window period before alarm - // DN-16SEPT2022
+#define MAX_FPGA_CLOCK_SPEED_ERROR_WINDOW_MS    (10 * SEC_PER_MIN * MS_PER_SECOND)    ///< FPGA clock speed error window - // DN-16SEPT2022
+
 #pragma pack(push, 1)
 
 /// Record for transmitted message that is pending acknowledgment from receiver.
@@ -148,6 +151,9 @@
 
     // Initialize bad message CRC time windowed count
     initTimeWindowedCount( TIME_WINDOWED_COUNT_BAD_MSG_CRC, MAX_COMM_CRC_FAILURES, MAX_COMM_CRC_FAILURE_WINDOW_MS );
+
+    // initialize FPGA clock speed error time windowed count
+    initTimeWindowedCount( TIME_WINDOWED_COUNT_FPGA_CLOCK_SPEED_ERROR, MAX_FPGA_CLOCK_SPEED_ERRORS, MAX_FPGA_CLOCK_SPEED_ERROR_WINDOW_MS);   // DN-16SEPT2022
 
     // Initialize pending ACK list
     for ( i = 0; i < PENDING_ACK_LIST_SIZE; i++ )
Index: firmware/App/Tasks/TaskPriority.c
===================================================================
diff -u -rc9b434898a8bbe9143b243627ea081e5e0f7a861 -r359f9350ad9b2156ce02c94fa4950c4fb6768572
--- firmware/App/Tasks/TaskPriority.c	(.../TaskPriority.c)	(revision c9b434898a8bbe9143b243627ea081e5e0f7a861)
+++ firmware/App/Tasks/TaskPriority.c	(.../TaskPriority.c)	(revision 359f9350ad9b2156ce02c94fa4950c4fb6768572)
@@ -65,7 +65,7 @@
 
 #ifndef BOARD_WITH_NO_HARDWARE
         // Verify processor clock speed against FPGA clock
-        execFPGAClockSpeedTest();
+        //execFPGAClockSpeedTest(); TODO - uncomment it DN-16SEPT2022
 
 #ifndef CAN_TEST
         // Monitor and process buttons