Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r358e32a9fb25a6929fc5bbd7ee1d8ed2c4b69920 -rea0ed778cde80abbb042a8a0a8ef56b3a434dfb2
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 358e32a9fb25a6929fc5bbd7ee1d8ed2c4b69920)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision ea0ed778cde80abbb042a8a0a8ef56b3a434dfb2)
@@ -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
         {