Fix commanalyzer functionality

10 files changed, 580 insertions, 363 deletions

diff --git a/clients/tde/src/part/commanalyzer/Makefile.am b/clients/tde/src/part/commanalyzer/Makefile.am
index d2db726..26e58a2 100644
--- a/clients/tde/src/part/commanalyzer/Makefile.am
+++ b/clients/tde/src/part/commanalyzer/Makefile.am
@@ -1,10 +1,10 @@
-INCLUDES     = $(all_includes) -I$(top_srcdir)/src -I$(top_srcdir)/src/widgets
+INCLUDES     = $(all_includes) -I$(top_srcdir)/src -I$(top_srcdir)/src/widgets $(KDE_INCLUDES)/tde
 KDE_CXXFLAGS = $(USE_EXCEPTIONS)
 METASOURCES  = AUTO
 
 #Part
 kde_module_LTLIBRARIES  =  libremotelab_commanalyzer.la
 libremotelab_commanalyzer_la_LIBADD  = ../../widgets/libtracewidget.la ../../widgets/libfloatspinbox.la $(LIB_KFILE) $(LIB_KPARTS) $(LIB_TDEUI) $(LIB_QT)
-libremotelab_commanalyzer_la_LDFLAGS = $(all_libraries) $(KDE_PLUGIN) -ltdecore -ltdeui -lkio -ltdefx
+libremotelab_commanalyzer_la_LDFLAGS = $(all_libraries) $(KDE_PLUGIN) -ltdecore -ltdeui -lkio -ltdefx -ltdekrbsocket -ltqtrla
 libremotelab_commanalyzer_la_SOURCES = \
    part.cpp layout.ui
diff --git a/clients/tde/src/part/commanalyzer/part.cpp b/clients/tde/src/part/commanalyzer/part.cpp
index dbee9be..5d339e3 100644
--- a/clients/tde/src/part/commanalyzer/part.cpp
+++ b/clients/tde/src/part/commanalyzer/part.cpp
@@ -13,7 +13,7 @@
 #include <kstatusbar.h>
 #include <kstdaction.h>
 #include <tqfile.h>        //encodeName()
-#include <tqtimer.h>       //postInit() hack
+#include <tqtimer.h>
 #include <tqvbox.h>
 #include <tqsocket.h>
 #include <tqmutex.h>
@@ -26,6 +26,8 @@
 #include "floatspinbox.h"
 #include "layout.h"
 
+#define NETWORK_COMM_TIMEOUT_MS 15000
+
 /* exception handling */
 struct exit_exception {
 	int c;
@@ -35,12 +37,16 @@ struct exit_exception {
 namespace RemoteLab {
 
 typedef KParts::GenericFactory<RemoteLab::CommAnalyzerPart> Factory;
+#define CLIENT_LIBRARY "libremotelab_commanalyzer"
 K_EXPORT_COMPONENT_FACTORY( libremotelab_commanalyzer, RemoteLab::Factory )
 
 
 CommAnalyzerPart::CommAnalyzerPart( TQWidget *parentWidget, const char *widgetName, TQObject *parent, const char *name, const TQStringList& )
-	: ReadOnlyPart( parent, name ), m_traceWidget(0), m_socket(0), m_base(0), stopTraceUpdate(false)
+	: RemoteInstrumentPart( parent, name ), m_traceWidget(0), m_commHandlerState(-1), m_commHandlerMode(0), m_commHandlerCommandState(0), m_base(0), stopTraceUpdate(false)
 {
+	// Initialize important base class variables
+	m_clientLibraryName = CLIENT_LIBRARY;
+
 	// Initialize mutex
 	m_instrumentMutex = new TQMutex(false);
 
@@ -48,6 +54,10 @@ CommAnalyzerPart::CommAnalyzerPart( TQWidget *parentWidget, const char *widgetNa
 	setInstance(Factory::instance());
 	setWidget(new TQVBox(parentWidget, widgetName));
 
+	// Create timers
+	m_updateTimeoutTimer = new TQTimer(this);
+	connect(m_updateTimeoutTimer, SIGNAL(timeout()), this, SLOT(mainEventLoop()));
+
 	// Create widgets
 	m_base = new CommAnalyzerBase(widget());
 	m_traceWidget = m_base->traceWidget;
@@ -61,347 +71,529 @@ CommAnalyzerPart::CommAnalyzerPart( TQWidget *parentWidget, const char *widgetNa
 }
 
 CommAnalyzerPart::~CommAnalyzerPart() {
-	if (m_traceWidget) {
-		delete m_traceWidget;
-	}
-	if (m_socket) {
-		m_socket->close();
-		while (m_socket->state() == TQSocket::Closing) {
-			tqApp->processEvents();
-		}
-		delete m_socket;
+	if (m_instrumentMutex->locked()) {
+		printf("[WARNING] Exiting when data transfer still in progress!\n\r"); fflush(stdout);
 	}
 
+	disconnectFromServer();
 	delete m_instrumentMutex;
 }
 
 void CommAnalyzerPart::postInit() {
-	m_updateTimer = new TQTimer(this);
-	connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(updateTrace()));
+	//
 }
 
 bool CommAnalyzerPart::openURL(const KURL &url) {
-	connectToServer(url.url());
+	int ret;
+	ret = connectToServer(url.url());
+	processLockouts();
+	return (ret != 0);
 }
 
 bool CommAnalyzerPart::closeURL() {
-	if (m_socket) {
-		m_socket->close();
-	
-		while (m_socket->state() != TQSocket::Idle) {
-			tqApp->processEvents();
-		}
-	}
-
+	disconnectFromServer();
 	m_url = KURL();
+	return true;
+}
 
-	if (m_instrumentMutex->locked()) {
-		throw exit_exception(-1);
-	}
+void CommAnalyzerPart::processLockouts() {
+}
 
-	return true;
+void CommAnalyzerPart::disconnectFromServerCallback() {
+	m_updateTimeoutTimer->stop();
 }
 
-TQString CommAnalyzerPart::callServerMethod(int command) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return TQString::null;
+void CommAnalyzerPart::connectionFinishedCallback() {
+	connect(m_socket, SIGNAL(readyRead()), m_socket, SLOT(processPendingData()));
+	m_socket->processPendingData();
+	connect(m_socket, SIGNAL(newDataReceived()), this, SLOT(mainEventLoop()));
+	m_tickerState = 0;
+	m_commHandlerState = 0;
+	m_commHandlerMode = 0;
+	m_socket->setDataTimeout(NETWORK_COMM_TIMEOUT_MS);
+	m_updateTimeoutTimer->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
+	processLockouts();
+	mainEventLoop();
+	return;
+}
+
+#define UPDATEDISPLAY_TIMEOUT	m_connectionActiveAndValid = false;														\
+				m_tickerState = 0;																\
+				m_commHandlerState = 2;																\
+				m_commHandlerMode = 0;																\
+				m_socket->clearIncomingData();															\
+				setStatusMessage(i18n("Server ping timeout.  Please verify the status of your network connection."));						\
+				m_updateTimeoutTimer->start(NETWORK_COMM_TIMEOUT_MS, TRUE);											\
+				m_instrumentMutex->unlock();															\
+				return;
+
+#define COMMUNICATIONS_FAILED	m_connectionActiveAndValid = false;														\
+				m_tickerState = 0;																\
+				m_commHandlerState = 2;																\
+				m_commHandlerMode = 0;																\
+				m_socket->clearIncomingData();															\
+				setStatusMessage(i18n("Instrument communication failure.  Please verify the status of your network connection."));				\
+				m_updateTimeoutTimer->start(NETWORK_COMM_TIMEOUT_MS, TRUE);											\
+				m_instrumentMutex->unlock();															\
+				return;
+
+#define SET_WATCHDOG_TIMER	if (!m_updateTimeoutTimer->isActive()) m_updateTimeoutTimer->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
+#define PAT_WATCHDOG_TIMER	m_updateTimeoutTimer->stop(); m_updateTimeoutTimer->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
+
+#define SET_NEXT_STATE(x)	if (m_commHandlerMode == 0) {															\
+					m_commHandlerState = x;															\
+				}																		\
+				else {																		\
+					m_commHandlerState = 255;														\
+				}
+
+void CommAnalyzerPart::mainEventLoop() {
+	TQDataStream ds(m_socket);
+	ds.setPrintableData(true);
+
+	if (!m_instrumentMutex->tryLock()) {
+		TQTimer::singleShot(0, this, SLOT(mainEventLoop()));	// Handle the concurrently received call immediately after current execution
+		return;
 	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			cmd.append('\r');
-			m_socket->writeBlock(cmd.latin1(), cmd.length());
-			// Read from the server
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+
+	if (m_socket) {
+		if ((m_commHandlerMode == 0) || (m_commHandlerMode == 1)) {
+			if (m_commHandlerState == 0) {
+				// Request communications analyzer access
+				ds << TQString("COMMUNICATIONS ANALYZER");
+				m_socket->writeEndOfFrame();
+
+				m_commHandlerState = 1;
+			}
+			else if (m_commHandlerState == 1) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get command status
+					TQString result;
+					ds >> result;
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						SET_NEXT_STATE(2)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			m_instrumentMutex->unlock();
-			return serverRet;
-		}
-		else {
-			m_instrumentMutex->unlock();
-			return TQString::null;
-		}
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return TQString::null;
-	}
-}
+			else if (m_commHandlerState == 2) {
+				// Set spectrum analyzer mode
+				ds << TQString("SETMODESPECTRUMANALYZER");
+				m_socket->writeEndOfFrame();
 
-int16_t CommAnalyzerPart::callServerMethodInt16(int command) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return 0;
-	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			cmd.append('\r');
-			m_socket->writeBlock(cmd.latin1(), cmd.length());
-			// Read from the server
-			int bytesread = 0;
-			int16_t data[1];
-			while ((bytesread < 2) && (m_socket->state() == TQSocket::Connected)) {
-				int ret = m_socket->readBlock(((char*)data)+bytesread, 1);
-				if (ret > 0) {
-					bytesread += ret;
+				SET_NEXT_STATE(3)
+			}
+			else if (m_commHandlerState == 3) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get command status
+					TQString result;
+					ds >> result;
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Set spectrum analyzer mode
+						ds << TQString("SETMODESPECTRUMANALYZER");
+						m_socket->writeEndOfFrame();
+
+						SET_NEXT_STATE(4)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+			else if (m_commHandlerState == 4) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get command status
+					TQString result;
+					ds >> result;
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get number of samples in trace, step 1
+						ds << TQString("GETTRACESAMPLECOUNT");
+						m_socket->writeEndOfFrame();
+	
+						SET_NEXT_STATE(5)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			m_instrumentMutex->unlock();
-			return data[0];
-		}
-		else {
-			m_instrumentMutex->unlock();
-			return 0;
-		}
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return 0;
-	}
-}
-
-double CommAnalyzerPart::callServerMethodDouble(int command) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return 0;
-	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			cmd.append('\r');
-			m_socket->writeBlock(cmd.latin1(), cmd.length());
-			// Read from the server
-			unsigned int bytesread = 0;
-			double data[1];
-			while ((bytesread < sizeof(double)) && (m_socket->state() == TQSocket::Connected)) {
-				int ret = m_socket->readBlock(((char*)data)+bytesread, 1);
-				if (ret > 0) {
-					bytesread += ret;
+			else if (m_commHandlerState == 5) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get number of samples in trace, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_samplesInTrace;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get number of horizontal divisions, step 1
+						ds << TQString("GETHORIZONTALDIVCOUNT");
+						m_socket->writeEndOfFrame();
+	
+						SET_NEXT_STATE(6)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+			else if (m_commHandlerState == 6) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get number of horizontal divisions, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_hdivs;
+					}
+					m_socket->clearFrameTail();
+
+					if (result == "ACK") {
+						// Get number of vertical divisions, step 1
+						ds << TQString("GETVERTICALDIVCOUNT");
+						m_socket->writeEndOfFrame();
+		
+						SET_NEXT_STATE(7)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			m_instrumentMutex->unlock();
-			return data[0];
-		}
-		else {
-			m_instrumentMutex->unlock();
-			return 0;
-		}
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return 0;
-	}
-}
+			else if (m_commHandlerState == 7) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get number of vertical divisions, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_vdivs;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get reference power level, step 1
+						ds << TQString("GETREFERENCEPOWERLEVEL");
+						m_socket->writeEndOfFrame();
 
-void CommAnalyzerPart::sendServerCommandWithParameter(int command, TQString param) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return;
-	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			param = TQString("%1%2%3").arg(param).arg(TQChar('°')).arg(TQChar('\r'));
-			cmd += param;
-			m_socket->writeBlock(cmd.ascii(), cmd.length());
-			// Read from the server
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+						SET_NEXT_STATE(8)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-		}
-		m_instrumentMutex->unlock();
-		return;
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return;
-	}
-}
-
-void CommAnalyzerPart::sendServerCommand(int command) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return;
-	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			cmd.append('\r');
-			m_socket->writeBlock(cmd.latin1(), cmd.length());
-			// Read from the server
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+			else if (m_commHandlerState == 8) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get reference power level, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_rpower;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get vertical division scale, step 1
+						ds << TQString("GETVERTDIVSCALE");
+						m_socket->writeEndOfFrame();
+		
+						SET_NEXT_STATE(9)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-		}
-		m_instrumentMutex->unlock();
-		return;
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return;
-	}
-}
-
-void CommAnalyzerPart::callServerMethodDoubleArray(int command, double * array, int arrayLen) {
-	if (m_instrumentMutex->locked() == true) {
-		printf("[WARN] An attempt was made to access the instrument asynchronously, and was rejected to prevent a lockup\n\r"); fflush(stdout);
-		return;
-	}
-	try {
-		m_instrumentMutex->lock();
-		if (m_socket->state() == TQSocket::Connected) {
-			TQString cmd = TQChar(command);
-			cmd.append('\r');
-			m_socket->writeBlock(cmd.latin1(), cmd.length());
-			// Read from the server
-			TQString serverRet;
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+			else if (m_commHandlerState == 9) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get vertical division scale, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_vscale;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get center frequency, step 1
+						ds << TQString("GETCENTERFREQUENCY");
+						m_socket->writeEndOfFrame();
+	
+						SET_NEXT_STATE(10)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			unsigned int bytesread = 0;
-			int16_t data[1];
-			while ((bytesread < 2) && (m_socket->state() == TQSocket::Connected)) {
-				int ret = m_socket->readBlock(((char*)data)+bytesread, 1);
-				if (ret > 0) {
-					bytesread += ret;
+			else if (m_commHandlerState == 10) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+	
+					// Get center frequency, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_centerfreq;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get frequency span, step 1
+						ds << TQString("GETFREQUENCYSPAN");
+						m_socket->writeEndOfFrame();
+		
+						SET_NEXT_STATE(11)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			serverRet = "";
-			while ((!serverRet.contains('\r')) && (m_socket->state() == TQSocket::Connected)) {
-				char data[1];
-				if( m_socket->readBlock(data, 1) > 0) {
-					serverRet.append(data[0]);
+			else if (m_commHandlerState == 11) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get frequency span, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_spanfreq;
+					}
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Update display widget(s)
+						updateGraticule();
+					}
+
+					if (result == "ACK") {
+						// Get trace, step 1
+						ds << TQString("GETSPECTRUMTRACE");
+						m_socket->writeEndOfFrame();
+		
+						SET_NEXT_STATE(12)
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
 				}
-				tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
 			}
-			bytesread = 0;
-			int elementsread = 0;
-			for (elementsread=0;elementsread<arrayLen;elementsread++) {
-				bytesread = 0;
-				while ((bytesread < sizeof(double)) && (m_socket->state() == TQSocket::Connected)) {
-					if (m_socket->size() < 1) {
-						tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
-					}
-					int ret = m_socket->readBlock(((char*)array)+bytesread+(elementsread*sizeof(double)), 1);
-					if (ret > 0) {
-						bytesread += ret;
+			else if (m_commHandlerState == 12) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get trace, step 2
+					TQDoubleArray trace;
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> trace;
+					}
+					m_socket->clearFrameTail();
+
+					if (result == "ACK") {
+						// Update display widget(s)
+						m_traceWidget->setSamples(trace);
+						postProcessTrace();
+						m_traceWidget->repaint();
+					}
+
+					if (result == "ACK") {
+						SET_NEXT_STATE(2)
+					}
+					else {
+						COMMUNICATIONS_FAILED
 					}
 				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
+				}
+			}
+			else if (m_commHandlerState == 255) {
+				// Execute pending command
+				m_commHandlerMode = 2;
+				m_socket->clearIncomingData();
 			}
+			SET_WATCHDOG_TIMER
 		}
-		m_instrumentMutex->unlock();
-		return;
-	}
-	catch (exit_exception& e) {
-		m_instrumentMutex->unlock();
-		return;
-	}
-}
-
-int CommAnalyzerPart::connectToServer(TQString server) {
-	if (!m_socket) {
-		m_socket = new TQSocket(this);
-	}
-	m_socket->connectToHost(server, 4002);
-	while ((m_socket->state() != TQSocket::Connected) && (m_socket->state() != TQSocket::Idle)) {
-		tqApp->eventLoop()->processEvents(TQEventLoop::AllEvents);
-	}
-	if (m_socket->state() != TQSocket::Connected) {
-		return -1;
-	}
+		else if (m_commHandlerMode == 2) {
+			if (m_commHandlerCommandState == 0) {
+				m_commHandlerMode = 0;
+				m_commHandlerState = 2;
+			}
+			else if (m_commHandlerCommandState == 1) {
+				// Set reference power level
+				ds << TQString("SETREFERENCEPOWERLEVEL");
+				ds << m_rpower;
+				m_socket->writeEndOfFrame();
 
-	// Gather information from the server
-	if (callServerMethod(41) == "NCK") {
-		// FIXME
-		// Display message and exit
-		return -1;
-	}
-	sendServerCommand(40);					// Set spectrum analyzer mode
-	m_samplesInTrace = callServerMethodInt16(63);		// Get number of samples in trace
-	m_traceWidget->setNumberOfSamples(m_samplesInTrace);
-	m_hdivs = callServerMethodInt16(62);			// Get number of horizontal divisions
-	m_traceWidget->setNumberOfHorizontalDivisions(m_hdivs);
-	m_vdivs = callServerMethodInt16(64);			// Get number of vertical divisions
-	m_traceWidget->setNumberOfVerticalDivisions(m_vdivs);
+				m_commHandlerCommandState = 2;
+			}
+			else if (m_commHandlerCommandState == 2) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Set reference power level, step 2
+					TQString result;
+					ds >> result;
+					m_socket->clearFrameTail();
+	
+					if (result == "ACK") {
+						// Get reference power level, step 1
+						ds << TQString("GETREFERENCEPOWERLEVEL");
+						m_socket->writeEndOfFrame();
 
-	m_rpower = callServerMethodDouble(65);			// Get reference power level
-	m_vscale = callServerMethodDouble(66);			// Get vertical division scale
+						m_commHandlerCommandState = 3;
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
+				}
+			}
+			else if (m_commHandlerCommandState == 3) {
+				// Get response data
+				if (m_socket->canReadFrame()) {
+					PAT_WATCHDOG_TIMER
+
+					// Get reference power level, step 2
+					TQString result;
+					ds >> result;
+					if (result == "ACK") {
+						ds >> m_rpower;
+					}
+					m_socket->clearFrameTail();
 
-	m_centerfreq = callServerMethodDouble(67);		// Get center frequency
-	m_spanfreq = callServerMethodDouble(68);		// Get frequency span
+					// Update display as needed
+					updateGraticule();
 
-	updateGraticule();
+					if (result == "ACK") {
+						m_commHandlerCommandState = 0;
+						TQTimer::singleShot(0, this, SLOT(mainEventLoop()));
+					}
+					else {
+						COMMUNICATIONS_FAILED
+					}
+				}
+				else {
+					if (!m_updateTimeoutTimer->isActive()) {
+						UPDATEDISPLAY_TIMEOUT
+					}
+				}
+			}
+		}
+	}
+	else {
+		m_commHandlerState = 0;
+		m_commHandlerCommandState = 0;
+	}
 
-	// Start trace update timer
-	m_updateTimer->start(10, FALSE);
+	m_instrumentMutex->unlock();
 }
 
 void CommAnalyzerPart::postProcessTrace() {
 	return;
 }
 
-void CommAnalyzerPart::updateTrace() {
-	m_updateTimer->stop();
-	callServerMethodDoubleArray(42, m_traceWidget->samples(), m_samplesInTrace);
-	postProcessTrace();
-	m_traceWidget->repaint();
-	if (m_socket->state() == TQSocket::Connected) {
-		if (stopTraceUpdate == true) {
-			stopTraceUpdate = false;
-		}
-		else {
-			m_updateTimer->start(10, FALSE);
-		}
-	}
-}
-
 void CommAnalyzerPart::updateGraticule() {
+	m_traceWidget->setNumberOfSamples(m_samplesInTrace);
+	m_traceWidget->setNumberOfHorizontalDivisions(m_hdivs);
+	m_traceWidget->setNumberOfVerticalDivisions(m_vdivs);
+
 	m_leftFrequency = m_centerfreq - (m_spanfreq/2.0);
 	m_rightFrequency = m_centerfreq + (m_spanfreq/2.0);
 	m_traceWidget->setDisplayLimits(m_leftFrequency, m_rpower, m_rightFrequency, m_rpower-(m_vscale*m_hdivs));
@@ -413,25 +605,10 @@ void CommAnalyzerPart::updateGraticule() {
 }
 
 void CommAnalyzerPart::saRefLevelChanged(double newval) {
-	// We cannot directly send data to the remote instrument because the GUI event may have ocurred during a remote instrument transaction
-	// This "flaw" is a direct result of maximizing performance by processing GUI events during network transfers, as well as the fact that this client is a multithreaded application
 	m_rpower = newval;
-	stopTraceUpdate = true;
-	TQTimer::singleShot(0, this, SLOT(changeSaRefLevel()));
-}
-
-void CommAnalyzerPart::changeSaRefLevel() {
-	// Keep trying to set the new power level
-	if (m_instrumentMutex->locked() == false) {
-		sendServerCommandWithParameter(61, TQString("%1").arg(m_rpower, 0, 'E'));	// Set reference power level
-		m_rpower = callServerMethodDouble(65);						// Get reference power level
-		updateGraticule();								// Update the display grid
-		m_updateTimer->start(10, FALSE);						// Restart trace update timer
-	}
-	else {
-		tqApp->eventLoop()->processEvents(TQEventLoop::ExcludeUserInput);
-		TQTimer::singleShot(0, this, SLOT(changeSaRefLevel()));
-	}
+	m_commHandlerMode = 1;
+	m_commHandlerCommandState = 1;
+	mainEventLoop();
 }
 
 KAboutData* CommAnalyzerPart::createAboutData() {
diff --git a/clients/tde/src/part/commanalyzer/part.h b/clients/tde/src/part/commanalyzer/part.h
index 196706b..252a67c 100644
--- a/clients/tde/src/part/commanalyzer/part.h
+++ b/clients/tde/src/part/commanalyzer/part.h
@@ -9,6 +9,8 @@
 #include <kparts/part.h>
 #include <kurl.h>
 
+#include <tqtrla.h>
+
 class KAboutData;
 using KParts::StatusBarExtension;
 class TraceWidget;
@@ -19,7 +21,7 @@ class CommAnalyzerBase;
 
 namespace RemoteLab
 {
-	class CommAnalyzerPart : public KParts::ReadOnlyPart
+	class CommAnalyzerPart : public KParts::RemoteInstrumentPart
 	{
 		Q_OBJECT
 	
@@ -30,40 +32,38 @@ namespace RemoteLab
 			virtual bool openFile() { return false; }	// pure virtual in the base class
 			virtual bool closeURL();
 			static KAboutData *createAboutData();
-			int connectToServer(TQString server);
 
 		public slots:
 			virtual bool openURL(const KURL &url);
 		
 		private slots:
 			void postInit();
-			void updateTrace();
+			void processLockouts();
 			void updateGraticule();
+			void connectionFinishedCallback();
+			void disconnectFromServerCallback();
+// 			void connectionStatusChangedCallback();
+			void mainEventLoop();
 			virtual void postProcessTrace();
 			void saRefLevelChanged(double);
-			void changeSaRefLevel();
-
-		private:
-			TQString callServerMethod(int command);
-			void sendServerCommand(int command);
-			int16_t callServerMethodInt16(int command);
-			double callServerMethodDouble(int command);
-			void callServerMethodDoubleArray(int command, double * array, int arrayLen);
-			void sendServerCommandWithParameter(int command, TQString param);
 	
 		private:
 			TraceWidget* m_traceWidget;
-			TQSocket* m_socket;
-			int16_t m_samplesInTrace;
+			int m_commHandlerState;
+			int m_commHandlerMode;
+			int m_commHandlerCommandState;
+			TQTimer* m_updateTimeoutTimer;
+			bool m_connectionActiveAndValid;
+			unsigned char m_tickerState;
+			TQ_INT16 m_samplesInTrace;
 			double m_leftFrequency;
 			double m_rightFrequency;
-			int16_t m_hdivs;
-			int16_t m_vdivs;
+			TQ_INT16 m_hdivs;
+			TQ_INT16 m_vdivs;
 			double m_centerfreq;
 			double m_spanfreq;
 			double m_rpower;
 			double m_vscale;
-			TQTimer* m_updateTimer;
 			CommAnalyzerBase* m_base;
 			TQMutex* m_instrumentMutex;
 			bool stopTraceUpdate;
diff --git a/clients/tde/src/widgets/Makefile.am b/clients/tde/src/widgets/Makefile.am
index be1f9ba..fac5e76 100644
--- a/clients/tde/src/widgets/Makefile.am
+++ b/clients/tde/src/widgets/Makefile.am
@@ -1,5 +1,6 @@
-INCLUDES = $(all_includes)
+INCLUDES = $(all_includes) $(KDE_INCLUDES)/tde
 METASOURCES = AUTO
 noinst_LTLIBRARIES = libtracewidget.la libfloatspinbox.la
 libtracewidget_la_SOURCES = tracewidget.cpp
+libtracewidget_la_LDFLAGS = $(all_libraries) -ltqtrla
 libfloatspinbox_la_SOURCES = floatspinbox.cpp
\ No newline at end of file
diff --git a/clients/tde/src/widgets/floatspinbox.cpp b/clients/tde/src/widgets/floatspinbox.cpp
index 266225a..10d9020 100644
--- a/clients/tde/src/widgets/floatspinbox.cpp
+++ b/clients/tde/src/widgets/floatspinbox.cpp
@@ -13,15 +13,15 @@
 
 #define ROUND(x) ((int)(0.5 + (x)))
 
-FloatSpinBox::FloatSpinBox(double fmin, double fmax, double fvalue, TQWidget *parent) : TQSpinBox(parent)
-{
+FloatSpinBox::FloatSpinBox(double fmin, double fmax, double fvalue, TQWidget *parent) : TQSpinBox(parent) {
 	init(fmin, fmax, fvalue);
 
 	connect( this, SIGNAL(valueChanged(int)), SLOT(acceptValueChanged(int)) );
 }
 
-FloatSpinBox::FloatSpinBox(TQWidget *parent , const char* name) : TQSpinBox(parent, name)
-{
+FloatSpinBox::FloatSpinBox(TQWidget *parent , const char* name) : TQSpinBox(parent, name) {
+	init(0, 0, 0);
+
 	connect( this, SIGNAL(valueChanged(int)), SLOT(acceptValueChanged(int)) );
 }
 
@@ -52,16 +52,14 @@ void FloatSpinBox::setFloatMax(double fmax) {
 	init(min, fmax, value);
 }
 
-TQString FloatSpinBox::mapValueToText(int ival)
-{
+TQString FloatSpinBox::mapValueToText(int ival) {
 	TQString str;
 	value = min + (double)ival * pow(10, -dec);
-	str.sprintf("%.*f", dec, value);
+	str.sprintf("%.*f", dec, value);	// This can hang as 'value' may (randomly) have an insanely high precision that is very difficult to convert to text
 	return( str );
 }
 
-int FloatSpinBox::mapTextToValue (bool * ok)
-{
+int FloatSpinBox::mapTextToValue (bool * ok) {
 	TQString str = cleanText();
 	double tryValue = str.toDouble( ok );
 	if (*ok) {
@@ -70,14 +68,13 @@ int FloatSpinBox::mapTextToValue (bool * ok)
 	return ROUND( (value - min) * pow( 10, dec ) );
 }
 
-void FloatSpinBox::setFloatValue(double d)
-{
+void FloatSpinBox::setFloatValue(double d) {
 	value = d;
 	setValue( ROUND( (value - min) * pow( 10, dec )) );
 }
 
-void FloatSpinBox::acceptValueChanged(int ival)
-{
+void FloatSpinBox::acceptValueChanged(int ival) {
+	Q_UNUSED(ival);
 	emit floatValueChanged( value );
 }
 
diff --git a/clients/tde/src/widgets/tracewidget.cpp b/clients/tde/src/widgets/tracewidget.cpp
index 9b771bc..d6e5d31 100644
--- a/clients/tde/src/widgets/tracewidget.cpp
+++ b/clients/tde/src/widgets/tracewidget.cpp
@@ -16,7 +16,6 @@ TraceWidget::TraceWidget(TQWidget* parent, const char* name) : TQWidget(parent,
 	m_rightEdge(0),
 	m_topEdge(0),
 	m_bottomEdge(0),
-	m_sampleArray(0),
 	m_graticulePixmap(0) {
 	setBackgroundMode(NoBackground);
 
@@ -30,10 +29,7 @@ TraceWidget::~TraceWidget() {
 
 void TraceWidget::setNumberOfSamples(unsigned int samples) {
 	m_samples = samples;
-	if (m_sampleArray) {
-		delete [] m_sampleArray;
-	}
-	m_sampleArray = new double[m_samples];
+	m_sampleArray.resize(m_samples);
 
 	updateGraticule();
 }
@@ -55,10 +51,15 @@ void TraceWidget::setDisplayLimits(double x, double y, double w, double h) {
 	m_bottomEdge = h;
 }
 
-double* TraceWidget::samples() {
+TQDoubleArray& TraceWidget::samples() {
 	return m_sampleArray;
 }
 
+void TraceWidget::setSamples(TQDoubleArray& tqda) {
+	m_sampleArray = tqda;
+	m_samples = tqda.size();
+}
+
 void TraceWidget::updateGraticule() {
 	unsigned int d,s,x,y;
 
diff --git a/clients/tde/src/widgets/tracewidget.h b/clients/tde/src/widgets/tracewidget.h
index 19c7806..21cced7 100644
--- a/clients/tde/src/widgets/tracewidget.h
+++ b/clients/tde/src/widgets/tracewidget.h
@@ -3,6 +3,8 @@
 
 #include <tqwidget.h>
 
+#include <tqtrla.h>
+
 class TQPixmap;
 
 class TraceWidget : public TQWidget
@@ -18,7 +20,8 @@ class TraceWidget : public TQWidget
 		void setNumberOfVerticalDivisions(unsigned int divisions);
 		void setDisplayLimits(double x, double y, double w, double h);
 
-		double* samples();
+		TQDoubleArray& samples();
+		void setSamples(TQDoubleArray&);
 
 	protected:
 		virtual void paintEvent(TQPaintEvent*);
@@ -35,6 +38,6 @@ class TraceWidget : public TQWidget
 		double m_rightEdge;
 		double m_topEdge;
 		double m_bottomEdge;
-		double* m_sampleArray;
+		TQDoubleArray m_sampleArray;
 		TQPixmap* m_graticulePixmap;
 };
\ No newline at end of file
diff --git a/lib/libtqtrla/src/tqtrla.cpp b/lib/libtqtrla/src/tqtrla.cpp
index 96c2274..bda048d 100644
--- a/lib/libtqtrla/src/tqtrla.cpp
+++ b/lib/libtqtrla/src/tqtrla.cpp
@@ -295,6 +295,27 @@ TQDataStream &operator>>( TQDataStream &s, TQFloatArray &data ) {
 	return s;
 }
 
+TQDataStream &operator<<( TQDataStream &s, const TQDoubleArray &data ) {
+	TQ_UINT32 i;
+	TQ_UINT32 count = data.count();
+	s << count;
+	for (i=0; i<count; i++) {
+		s << data[i];
+	}
+	return s;
+}
+
+TQDataStream &operator>>( TQDataStream &s, TQDoubleArray &data ) {
+	TQ_UINT32 i;
+	TQ_UINT32 count;
+	s >> count;
+	data.resize(count);
+	for (i=0; i<count; i++) {
+		s >> data[i];
+	}
+	return s;
+}
+
 bool operator==( const ServiceType &s1, const ServiceType &s2 ) {
 	bool identical = true;
 
diff --git a/lib/libtqtrla/src/tqtrla.h b/lib/libtqtrla/src/tqtrla.h
index a982946..faca985 100644
--- a/lib/libtqtrla/src/tqtrla.h
+++ b/lib/libtqtrla/src/tqtrla.h
@@ -102,6 +102,15 @@ Q_EXPORT TQDataStream &operator>>(TQDataStream &, TQFloatArray &);
 
 // =============================================================================
 
+typedef TQMemArray<double> TQDoubleArray;
+
+#ifndef QT_NO_DATASTREAM
+Q_EXPORT TQDataStream &operator<<(TQDataStream &, const TQDoubleArray &);
+Q_EXPORT TQDataStream &operator>>(TQDataStream &, TQDoubleArray &);
+#endif
+
+// =============================================================================
+
 class ServiceType
 {
 	public:
diff --git a/servers/gpib_server_lin/src/gpib_conn.cpp b/servers/gpib_server_lin/src/gpib_conn.cpp
index a17ee1f..d27c049 100644
--- a/servers/gpib_server_lin/src/gpib_conn.cpp
+++ b/servers/gpib_server_lin/src/gpib_conn.cpp
@@ -209,10 +209,17 @@ void GPIBSocket::commandLoop() {
 					}
 
 					if (m_activeDeviceType != 0) {
+						ds << TQString("ACK");
+						writeEndOfFrame();
+
 						m_servClientTimeout->start(NETWORK_COMM_TIMEOUT_MS, TRUE);
 						transferred_data = true;
 						m_commandLoopState = 1;
 					}
+					else {
+						ds << TQString("NCK");
+						writeEndOfFrame();
+					}
 				}
 			}
 			else if (m_commandLoopState == 1) {
@@ -226,6 +233,7 @@ void GPIBSocket::commandLoop() {
 						ds.setPrintableData(true);
 						TQByteArray recData;
 						ds >> recData;
+						clearFrameTail();
 						if (recData.size() > 0) {
 							if (write(m_serverParent->m_serialDeviceSocket, recData.data(), recData.size()) < 0) {
 								// ERROR
@@ -251,12 +259,12 @@ void GPIBSocket::commandLoop() {
 						TQDataStream ds(this);
 						ds.setPrintableData(true);
 						ds >> m_instrumentCommand;
-	
+
 						if (m_instrumentCommand != "") {
 							if (m_activeDeviceType == 2) {
 								// Oscilloscope
 								if (m_instrumentCommand == "SETHORIZTIMEBASE") {		// Want to change horizontal timebase
-									float value;
+									double value;
 									ds >> value;
 									if (scope_set_timebase(value, m_serverParent->m_scopeType.ascii(), m_serverParent->m_scopeDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -341,7 +349,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETTRIGGERLEVEL") {		// Want to change trigger level
-									float value;
+									double value;
 									ds >> value;
 									if (scope_set_trigger_level(value, m_serverParent->m_scopeType.ascii(), m_serverParent->m_scopeDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -381,7 +389,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETFREQUENCY") {		// Want to change frequency
-									float value;
+									double value;
 									ds >> value;
 									if (signal_set_frequency(value, m_serverParent->m_funcgenType.ascii(), m_serverParent->m_funcgenDeviceSocket, errorbuf) == 0) {
 										ds << TQString("ACK");
@@ -393,7 +401,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETDUTYCYCLE") {		// Want to change duty cycle
-									float value;
+									double value;
 									ds >> value;
 									if (signal_set_duty_cycle(value, m_serverParent->m_funcgenType.ascii(), m_serverParent->m_funcgenDeviceSocket, errorbuf) == 0) {
 										ds << TQString("ACK");
@@ -445,7 +453,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETPEAKPEAKVOLTAGE") {		// Want to change P-P voltage
-									float value;
+									double value;
 									ds >> value;
 									if (signal_set_peak_peak_voltage(value, m_serverParent->m_funcgenType.ascii(), m_serverParent->m_funcgenDeviceSocket, errorbuf) == 0) {
 										ds << TQString("ACK");
@@ -457,7 +465,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETOFFSETVOLTAGE") {		// Want to change offset voltage
-									float value;
+									double value;
 									ds >> value;
 									if (signal_set_offset_voltage(value, m_serverParent->m_funcgenType.ascii(), m_serverParent->m_funcgenDeviceSocket, errorbuf) == 0) {
 										ds << TQString("ACK");
@@ -485,7 +493,7 @@ void GPIBSocket::commandLoop() {
 									if (commanalyzer_get_spectrum_analyzer_trace(m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										int i;
 										int tracelen = commanalyzerTraceLength(m_serverParent->m_commanalyzerType.ascii());
-										TQFloatArray traceData;
+										TQDoubleArray traceData;
 										traceData.resize(tracelen);
 										for (i=0; i<tracelen; i++) {
 											traceData[i] = commanalyzer_raw_trace_data[i];
@@ -531,7 +539,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETCENTERFREQUENCY") {		// Want to change center frequency
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_center_frequency(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -543,7 +551,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETFREQUENCYSPAN") {		// Want to change frequency span
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_frequency_span(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -595,7 +603,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETINPUTATTENUATION") {	// Want to change input attenuation
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_input_attenuation(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -607,7 +615,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETVERTICALSCALE") {		// Want to change scale
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_scale(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -639,7 +647,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETGENOUTPUTPOWER") {		// Want to change generator output power
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_generator_power(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -651,7 +659,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETGENOUTPUTFREQUENCY") {	// Want to change generator output frequency
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_generator_frequency(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -683,7 +691,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETTRACEAVERAGING") {		// Want to set trace averaging
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_trace_averaging(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -695,7 +703,7 @@ void GPIBSocket::commandLoop() {
 									}
 								}
 								else if (m_instrumentCommand == "SETREFERENCEPOWERLEVEL") {	// Want to set reference power level
-									float value;
+									double value;
 									ds >> value;
 									if (commanalyzer_set_spectrum_analyzer_reference_power_level(value, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");
@@ -766,7 +774,7 @@ void GPIBSocket::commandLoop() {
 										writeEndOfFrame();
 									}
 								}
-								else if (m_instrumentCommand == "SETCENTERFREQUENCY") {		// Want to get the center frequency
+								else if (m_instrumentCommand == "GETCENTERFREQUENCY") {		// Want to get the center frequency
 									double freq;
 									if (commanalyzer_get_spectrum_analyzer_center_frequency(&freq, m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
 										ds << TQString("ACK");