diff --git a/src/ContinuousAO.cpp b/src/ContinuousAO.cpp
index 2bda9f121c6f2c3bd51db5abeee0cb7bc76480eb..0a5aee62ba10faec4b1b5621024b4aede90cc7ff 100755
--- a/src/ContinuousAO.cpp
+++ b/src/ContinuousAO.cpp
@@ -179,7 +179,7 @@ void ContinuousAO::init_device()
   //- check memory allocation
   if (ao == 0)
   {
-	raise_error("ContinuousAO::init_device\nout of memory error while initializing ADLinkContinuousAO");
+	on_fault("ContinuousAO::init_device\nout of memory error while initializing ADLinkContinuousAO");
 	return;
   }
   
@@ -194,7 +194,7 @@ void ContinuousAO::init_device()
   ch7 = new double[bufferDepth];
   if(ch0 == 0 || ch1 == 0 || ch2 == 0 || ch3 == 0 || ch4 == 0 || ch5 == 0 ||ch6 == 0 || ch7 == 0)
   {
-	raise_error("ContinuousAO::init_device\nout of memory error while initializing channel's datas");
+	on_fault("ContinuousAO::init_device\nout of memory error while initializing channel's datas");
 	return;
   }
   
@@ -531,29 +531,21 @@ void ContinuousAO::init_device()
   
   DEBUG_STREAM<<"ContinuousAO::init_device : init acq"<<std::endl;
   try{
-	_ASL_TRY(
-		ao->init(adl::DAQ2502, boardNum),
-		"init", 
-		"ContinuousAO::init_device"
-	);
+	ao->init(adl::DAQ2502, boardNum);
 	
 	DEBUG_STREAM<<"ContinuousAO::init_device : config acq"<<std::endl;
 	try{
-		_ASL_TRY(
-			ao->configure(config),
-			"configure", 
-			"ContinuousAO::init_device"
-		);	 
+		ao->configure(config);	 
 	}
 	catch (...)
 	{
-	  raise_error("ContinuousAO::init_device\nError while configuring driver");
+	  on_fault("ContinuousAO::init_device\nError while configuring driver");
 	  return;
 	}
   }
   catch (...)
   {
-	raise_error("ContinuousAO::init_device\nError while initializing the driver");
+	on_fault("ContinuousAO::init_device\nError while initializing the driver");
 	return;
   }
 
@@ -1458,7 +1450,7 @@ void ContinuousAO::save_waveform(double* waveform, string wfm_channel)
     );
 }
 
-void ContinuousAO::raise_error(std::string p_error_message)
+void ContinuousAO::on_fault(std::string p_error_message)
 {
    m_error_message = p_error_message;
    set_state(Tango::FAULT);
diff --git a/src/ContinuousAO.h b/src/ContinuousAO.h
index 5829b23859cd5fc1ca7932ad1a2a51babfd60161..2b4ad6ea95a063f584674d95f5552eeb01c29857 100755
--- a/src/ContinuousAO.h
+++ b/src/ContinuousAO.h
@@ -326,7 +326,7 @@ public :
    ADLinkContinuousAO* ao;
   // asl::ContinuousAOConfig* config;
    void set_internal_state(void);
-   void raise_error(std::string p_error_message);
+   void on_fault(std::string p_error_message);
    // save a channel waveform in the database 
    void ContinuousAO::save_waveform(double* waveform, string wfm_channel);
    double* ch0;