Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r8cebc7f282f403c99f712d422454c15414b6fc73 -r84e94699ac1a6236a6aba130e45149a9cf3ac5f8
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 8cebc7f282f403c99f712d422454c15414b6fc73)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 84e94699ac1a6236a6aba130e45149a9cf3ac5f8)
@@ -363,7 +363,15 @@
         // Check for stale arterial pressure reading
         if ( FALSE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_PRESSURE_READ_TIMEOUT_ERROR, ( lastArterialPressureReadCtr == artReadCtr || artErrorCtr > 0 ) ) )
         {
+#ifndef PBA_ESTIMATION
             arterialPressure.data = ARTERIAL_PRESSURE_V_PER_BIT * ( (F32)(artPres) / ( ARTERIAL_PRESSURE_SENSITIVITY * ARTERIAL_PRESSURE_V_BIAS ) ) + getF32OverrideValue( &arterialPressureOffset );
+#else
+            // TODO - temporary test code - remove later
+            F32 artPres = -0.1146 * getMeasuredBloodPumpMCSpeed();
+            artPres = MAX(-200.0,artPres);
+            artPres = MIN(0,artPres);
+            arterialPressure.data = artPres;
+#endif
         }
         else
         {