diff --git a/include/AbstractElectrometerClass.h b/include/AbstractElectrometerClass.h
index e4d946c033da945bbba22fff825ee7165652d494..869a918910edf3fe9b15155c875b8ddfa03387c2 100644
--- a/include/AbstractElectrometerClass.h
+++ b/include/AbstractElectrometerClass.h
@@ -9,9 +9,13 @@
 //
 // $Author: xavela $
 //
-// $Revision: 1.7 $
+// $Revision: 1.8 $
 //
 // $Log: not supported by cvs2svn $
+// Revision 1.7  2008/02/15 08:49:46  xavela
+// xavier :
+// - minor change for integration time
+//
 // Revision 1.6  2008/02/13 15:51:44  xavela
 // xavier :
 // - Integration Mode available for DDC/SCPI devices
@@ -110,6 +114,7 @@ public:
 	*  \brief  Following functions are only supported for SCPI protocol
 	*
 	*/
+	void abort (void); 
 	virtual void init_keithley		(void); 
 	void clear_registers	(void); 
 	void averageStateON		(void); 
diff --git a/include/ElectrometerProtocol.h b/include/ElectrometerProtocol.h
index 98414a6bc6c4865acd2e79b9acdbc124ddb1c379..5d06b51020e77b67f05f7cd118b3186aae860f6e 100644
--- a/include/ElectrometerProtocol.h
+++ b/include/ElectrometerProtocol.h
@@ -12,9 +12,13 @@
 //
 // $Author: xavela $
 //
-// $Revision: 1.6 $
+// $Revision: 1.7 $
 //
 // $Log: not supported by cvs2svn $
+// Revision 1.6  2008/02/15 08:49:46  xavela
+// xavier :
+// - minor change for integration time
+//
 // Revision 1.5  2008/02/13 15:51:44  xavela
 // xavier :
 // - Integration Mode available for DDC/SCPI devices
@@ -107,6 +111,7 @@ public:
 	*  \brief Electrometer : Keithley protocol dependent commands.
 	*/
 	virtual void init_keithley		(void); 
+	virtual void abort        		(void); 
 	virtual void set_knplc			(std::string nPLC);
 	virtual void set_triggercount	(std::string trigcounts);
 	virtual void set_triggerdelay	(std::string trigdelay);
diff --git a/include/KeithleySCPIProtocol.h b/include/KeithleySCPIProtocol.h
index 5158fdd97740197b02b5f5ab1a9b0f255bd4b7a8..14fd1ecfd82505cab2d92e8188edcf59f6d16cf2 100644
--- a/include/KeithleySCPIProtocol.h
+++ b/include/KeithleySCPIProtocol.h
@@ -82,7 +82,8 @@ public:
 	*/
   bool readStatusByteRegister (void);
 	
-  void init_keithley			(void); 
+  void init_keithley	(void); //- start operation(s)
+	void abort        	(void); //- cancel only all operation(s) started by init_keithley()
 	/**
 	*  \brief Electrometer : Acquisition config
 	*/
diff --git a/src/AbstractElectrometerClass.cpp b/src/AbstractElectrometerClass.cpp
index 19bd7509cce271fe8250ebf970a1d727bd4914e2..f5eedc6df8a060f5f164904051eae0bdfba13cd0 100644
--- a/src/AbstractElectrometerClass.cpp
+++ b/src/AbstractElectrometerClass.cpp
@@ -11,9 +11,13 @@
 //
 // $Author: xavela $
 //
-// $Revision: 1.8 $
+// $Revision: 1.9 $
 //
 // $Log: not supported by cvs2svn $
+// Revision 1.8  2008/02/15 08:49:51  xavela
+// xavier :
+// - minor change for integration time
+//
 // Revision 1.7  2008/02/13 15:51:43  xavela
 // xavier :
 // - Integration Mode available for DDC/SCPI devices
@@ -174,6 +178,14 @@ void AbstractElectrometerClass::init_keithley (void)
 											"AbstractElectrometerClass::init_keithley( ).");
 }
 
+// ============================================================================
+// AbstractElectrometerClass::abort
+// ============================================================================
+void AbstractElectrometerClass::abort (void) 
+{
+	_electrometerProtocol->abort( );
+}
+
 // ============================================================================
 // AbstractElectrometerClass::set_knplc
 // ============================================================================
diff --git a/src/ElectrometerProtocol.cpp b/src/ElectrometerProtocol.cpp
index 4e52171a7b932d67bd5f2a9fd571e60d96b886e2..4ebd5164f4d9dafcb5beea4ddf2077771e8dfaa6 100644
--- a/src/ElectrometerProtocol.cpp
+++ b/src/ElectrometerProtocol.cpp
@@ -360,6 +360,16 @@ void ElectrometerProtocol::init_keithley (void)
 											"ElectrometerProtocol::init_keithley( ).");
 }
 
+// ============================================================================
+// ElectrometerProtocol::abort
+// ============================================================================
+void ElectrometerProtocol::abort (void) 
+{
+	throw electrometer::ElectrometerException("COMMAND_NOT_SUPPORTED", 
+											"This Electrometer does not support this command.",
+											"ElectrometerProtocol::abort( ).");
+}
+
 // ============================================================================
 // ElectrometerProtocol::set_knplc
 // ============================================================================
diff --git a/src/KeithleySCPIProtocol.cpp b/src/KeithleySCPIProtocol.cpp
index d2c3c1741e43676da7dc1377008dc456327ebe49..2bb5ccbbafef96590419a307144b65d1ee3cc6c0 100644
--- a/src/KeithleySCPIProtocol.cpp
+++ b/src/KeithleySCPIProtocol.cpp
@@ -38,10 +38,15 @@ KeithleySCPIProtocol::KeithleySCPIProtocol (std::string& gpib_device_name)
 
 	_communication_link = new TangoGpibLink (gpib_device_name);
 
+std::string cmd_to_send("");
   //- Select reading only
-  std::string cmd_to_send("FORM:ELEM READ");
-
-	//- send command
+  cmd_to_send = "FORM:ELEM READ";
+	_communication_link->write(cmd_to_send);
+  //- Select control source : IMMediate
+  cmd_to_send = "ARM:SOUR IMM";
+	_communication_link->write(cmd_to_send);
+  //- Set measure count
+  cmd_to_send = "ARM:COUNT 1";
 	_communication_link->write(cmd_to_send);
 
 	std::cout << "KeithleySCPIProtocol::KeithleySCPIProtocol ->" << std::endl;
@@ -448,6 +453,17 @@ std::string cmd_to_send("INIT");
 	_communication_link->write(cmd_to_send);
 }
 
+// ============================================================================
+// KeithleySCPIProtocol::abort -> cancel all operations started by INIT command
+// ============================================================================
+void KeithleySCPIProtocol::abort (void) 
+{
+std::string cmd_to_send("ABORt");
+
+	//- send command : ABORt to cancel all operations
+	_communication_link->write(cmd_to_send);
+}
+
 // ============================================================================
 // KeithleySCPIProtocol::set_knplc : specify the integration rate
 // ============================================================================