Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -ra4774f170562e33a48238cb3e3137bdd06ac374a -r3ec3e45e91681444384f62618da1482cdca61598
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision a4774f170562e33a48238cb3e3137bdd06ac374a)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 3ec3e45e91681444384f62618da1482cdca61598)
@@ -31,6 +31,7 @@
 // ********** private definitions **********
 
 #define AIR_PUMP_PWM_TIME           20                ///< Time (in 10ns increments) per PWM register count for the air pump = 20 kHz.
+#define AIR_PUMP_RPM_FACTOR         60                ///< Air pump rpm pump factor
 
 // ********** private data **********
 
@@ -93,13 +94,26 @@
 /*********************************************************************//**
 * @brief
 * The getAirPumpMotorRPM function reads the air pump RPM from FPGA.
+* minimum RPM that reports is 400 rpm and anything slower considered 0 (0xFFFF)
+* to convert the real RPM, use the formula rpm  = (60.0 / getH12AirPumpMotorRPM()* 1e-6)
 * @details \b Inputs: getAirPumpRPM
 * @details \b Outputs: none
 * @return air pump motor RPM value.
 *************************************************************************/
 U16 getAirPumpMotorRPM( void )
 {
-   return getH12AirPumpMotorRPM();
+    double  realRPM;
+    U16 fpgaRPM = getH12AirPumpMotorRPM();
+
+    if ( 0xFFFF == fpgaRPM )
+    {
+        realRPM = 0;
+    }
+    else
+    {
+        realRPM = ( ( ( double )AIR_PUMP_RPM_FACTOR ) / ( double )( fpgaRPM * 1e-6 ) );
+    }
+    return ( U16 )realRPM;
 }
 
 /*********************************************************************//**