Index: firmware/App/Controllers/AirTrap.c
===================================================================
diff -u -ra25d5c24569e3d77487a75498a4e10dd83ada9c4 -ra4774f170562e33a48238cb3e3137bdd06ac374a
--- firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision a25d5c24569e3d77487a75498a4e10dd83ada9c4)
+++ firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision a4774f170562e33a48238cb3e3137bdd06ac374a)
@@ -55,9 +55,8 @@
 #define AIR_PUMP_MOTOR_LOWER_PWM              23.5F                                               ///< Power level setting (PWM) in percentage for H12 air pump to lower the level of the air trap.
 #define AIR_PUMP_MOTOR_MIN_PWM_OVERRIDE       60                                                  ///< Air pump motor minimum PWM to override.
 #define AIR_PUMP_MOTOR_MAX_PWM_OVERRIDE       250                                                 ///< Air pump motor maximum PWM to override.
-#define AIR_PUMP_MOTOR_MAX_PWM                255                                                 ///< Air pump motor maximum PWM.
 /// LDT-2384 test formula for air trap lower events for air pump duty cycle based on venous pressure
-/// air pump duty cycle (% PWM) = 0.0002x^2 + 0.0925x + 25.467, where x is long filtered H14 venous pressure in mmHg before air trap lower event
+/// air pump duty cycle (% PWM) = 0.0002x^2 + 0.0925x + 25.467, where x is long filtered (60 sec) H14 venous pressure in mmHg before air trap lower event
 #define QUADRATIC_COEFFICIENT                 0.0002F                                             ///< X2 quadratic coefficient
 #define LINEAR_COEFFICIENT                    0.0925F                                             ///< X linear coefficient
 #define CONSTANT_TERM                         25.467F                                             ///< Constant term
@@ -344,9 +343,10 @@
 F32 getCalculatedAirPumpDutyCycle( void )
 {
     F32 h14Pressure = getLongFilteredVenousPressure();
-    // the currently set P12 duty cycle (raw PWM) must be 0.0005x^2 + 0.2313x + 63.667, where x = H14 venous pressure in mmHg before air pump lower event
+    /// LDT-2384 test formula for air trap lower events for air pump duty cycle based on venous pressure
+    /// air pump duty cycle (% PWM) = 0.0002x^2 + 0.0925x + 25.467, where x is long filtered (60 sec) H14 venous pressure in mmHg before air trap lower event
     F32 dutyCycle = ( ( QUADRATIC_COEFFICIENT  * ( h14Pressure * h14Pressure ) ) - ( LINEAR_COEFFICIENT * ( h14Pressure ) ) ) + CONSTANT_TERM;
-    dutyCycle = ( dutyCycle / AIR_PUMP_MOTOR_MAX_PWM ) * FRACTION_TO_PERCENT_FACTOR;
+    dutyCycle = ( dutyCycle / (F32)AIR_PUMP_MAX_PWM ) * FRACTION_TO_PERCENT_FACTOR;
 
     return dutyCycle;
 }
Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -r3074682de43568567f244e2663d1f75b7e6ea85e -ra4774f170562e33a48238cb3e3137bdd06ac374a
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 3074682de43568567f244e2663d1f75b7e6ea85e)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision a4774f170562e33a48238cb3e3137bdd06ac374a)
@@ -15,6 +15,8 @@
 *
 ***************************************************************************/
 
+#include <math.h>
+
 #include "AlarmMgmtTD.h"
 #include "FpgaTD.h"
 #include "GLXferPump.h"
@@ -29,7 +31,6 @@
 // ********** 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_MAX_PWM            255               ///< Air pump maximum PWM.
 
 // ********** private data **********
 
@@ -104,20 +105,20 @@
 /*********************************************************************//**
  * @brief
  * The PercentageToScalar function convert percentage 0-100% duty
- * cycle to 0-255 scalar value.
+ * cycle to 0-250 scalar value.
  * @details \b Inputs: none
  * @details \b Outputs: none
- * @param percentage Power level for air pump (0...2=off, 3-100.0 for ON).
- * @return U08 8-bit PWM value (0-255)
+ * @param percentage Power level for air pump (0=off, 1-100.0 for ON).
+ * @return U08 8-bit PWM value (0-250)
  *************************************************************************/
 static U08 convertPercentageToScalar( F32 percentage )
 {
     F32 power;
     // Clamp input to 0-100%
     power = RANGE( percentage, AIR_PUMP_DUTY_CYCLE_MIN, AIR_PUMP_DUTY_CYCLE_MAX );
 
-    // Calculate 0-255 value (255 * power / 100)
-    return (U08)( ( ( power * AIR_PUMP_MAX_PWM ) / FRACTION_TO_PERCENT_FACTOR ) );
+    // Calculate 0-250 value (250 * power / 100)
+    return (U08)( ceilf ( ( ( power * (F32)AIR_PUMP_MAX_PWM ) / FRACTION_TO_PERCENT_FACTOR ) ) );
 }
 
 
Index: firmware/App/Drivers/GLXferPump.h
===================================================================
diff -u -r3074682de43568567f244e2663d1f75b7e6ea85e -ra4774f170562e33a48238cb3e3137bdd06ac374a
--- firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision 3074682de43568567f244e2663d1f75b7e6ea85e)
+++ firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision a4774f170562e33a48238cb3e3137bdd06ac374a)
@@ -36,6 +36,7 @@
 #define AIR_PUMP_MOTOR_OFF            0.0F            ///< Power level setting (PWM) for H12 air pump to turn pump off.
 #define AIR_PUMP_DUTY_CYCLE_MIN       0.0F            ///< Air pump minimum duty cycle in percentage
 #define AIR_PUMP_DUTY_CYCLE_MAX       100.0F          ///< Air pump maximum duty cycle in percentage
+#define AIR_PUMP_MAX_PWM              250             ///< Air pump maximum PWM, FPGA ignores 251-255
 
 // ********** public function prototypes **********