Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rf6b78d1fe6741043de38707211710ab0e8a08483 -r23016be42e59935da5aa53b26b8cb31e2a240858
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision f6b78d1fe6741043de38707211710ab0e8a08483)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 23016be42e59935da5aa53b26b8cb31e2a240858)
@@ -78,8 +78,8 @@
 #define ARTERIAL_PRESSURE_STALE_DATA        2                                               ///< Arterial pressure status bits indicate data is stale (no new data since last fpga read).
 #define ARTERIAL_PRESSURE_DIAG_CONDITION    3                                               ///< Arterial pressure status bits diagnostic condition (alarm).
 
-#define OCCLUSION_THRESHOLD_OFFSET          10000                                           ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived above which an occlusion is detected.
-#define OCCLUSION_CLEAR_THRESHOLD_OFFSET    6000                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived below which an occlusion is cleared.
+#define OCCLUSION_THRESHOLD_OFFSET          4000                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived above which an occlusion is detected.
+#define OCCLUSION_CLEAR_THRESHOLD_OFFSET    4000                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived below which an occlusion is cleared.
 
 #define CARTRIDGE_LOADED_THRESHOLD          5000                                            ///< Threshold above which a cartridge is considered loaded.
 #define MIN_OCCLUSION_COUNTS                2000                                            ///< Minimum occlusion sensor reading for range check.