Index: trunk/BNC/src/bncwindow.cpp
===================================================================
--- trunk/BNC/src/bncwindow.cpp	(revision 4546)
+++ trunk/BNC/src/bncwindow.cpp	(revision 4547)
@@ -379,4 +379,5 @@
   _pppQuickStartLineEdit = new QLineEdit(settings.value("pppQuickStart").toString());
   _pppMaxSolGapLineEdit  = new QLineEdit(settings.value("pppMaxSolGap").toString());
+  _pppAudioResponseLineEdit  = new QLineEdit(settings.value("pppAudioResponse").toString());
   _pppRefCrdXLineEdit    = new QLineEdit(settings.value("pppRefCrdX").toString());
   _pppRefCrdYLineEdit    = new QLineEdit(settings.value("pppRefCrdY").toString());
@@ -887,4 +888,5 @@
   _pppQuickStartLineEdit->setMaximumWidth(6*ww);
   _pppMaxSolGapLineEdit->setMaximumWidth(6*ww);
+  _pppAudioResponseLineEdit->setMaximumWidth(6*ww);
   _pppRefCrdXLineEdit->setMaximumWidth(10*ww);
   _pppRefCrdYLineEdit->setMaximumWidth(10*ww);
@@ -987,4 +989,8 @@
   ppp2Layout->addWidget(_pppMaxSolGapLineEdit,                ir, 7, Qt::AlignRight);
   ppp2Layout->addWidget(new QLabel("Max Sol. Gap (sec)"),     ir, 8);  
+  ++ir;
+  ppp2Layout->addWidget(new QLabel("Basics cont'd"),          ir, 0);  
+  ppp2Layout->addWidget(_pppAudioResponseLineEdit,            ir, 1, Qt::AlignRight);
+  ppp2Layout->addWidget(new QLabel("Audio response (m)"),     ir, 2);  
   ++ir;
   ppp2Layout->addWidget(new QLabel("Sigmas"),                 ir, 0);
@@ -1257,4 +1263,5 @@
   _pppQuickStartLineEdit->setWhatsThis(tr("<p>Enter the lenght of a startup period in seconds for which you want to fix the PPP solution to a known XYZ coordinate as introduced above and adjust a sigma 'XYZ Ini' according to the coordinate's precision. Fixing the coordinate is done in BNC through setting the 'Sigma XYZ Noise' you define below temporarily to zero.</p><p>This so-called Quick-Start option allows the PPP solution to rapidly converge. It requires that the antenna remains unmoved on the know position throughout the startup period.</p><p>A value of 120 is likely to be an appropriate choice for 'Quick-Start'. Default is an empty option field, meaning that you don't want BNC to operate in Quick-Start mode.</p>"));
   _pppMaxSolGapLineEdit->setWhatsThis(tr("<p>Specify a 'Maximum Solution Gap' in seconds. Should the time span between two consecutive solutions exceed this limit, the algorithm returns into Quick-Start mode and fixes the introduced reference coordinate for the specified period. A value of '60' seconds could be an appropriate choice.</p><p>This option makes only sense for a stationary operated receiver where solution convergence can be enforced because a good approximation for the rover position is known. Default is an empty option field, meaning that you don't want BNC to return into the Quick-Start mode after failures caused i.e. by longer lasting outages.</p>"));
+  _pppAudioResponseLineEdit->setWhatsThis(tr("<p>Specify an 'Audio response' threshold in meters. A beep is produced by BNC whenever a horizontal PPP coordinate component differs by more than the threshold value from the marker coordinate.</p><p>Default is an empty option field, meaning that you don't want BNC to produce alarm signals.</p>"));
   _pppSigPLineEdit->setWhatsThis(tr("<p>Enter a sigma for your phase observations in meters.</p><p>The higher the sigma you enter, the less the contribution of phase observations to a PPP solutions based on a combination of code and phase data. 0.02 (default) is likely to be an appropriate choice.</p>"));
   _pppAverageLineEdit->setWhatsThis(tr("<p>Enter the length of a sliding time window in minutes. BNC will continuously output moving average positions computed from those individual positions obtained most recently throughout this period.</p><p>An empty option field (default) means that you don't want BNC to output moving average positions.</p>"));
@@ -1721,4 +1728,5 @@
   settings.setValue("pppQuickStart", _pppQuickStartLineEdit->text());
   settings.setValue("pppMaxSolGap",  _pppMaxSolGapLineEdit->text());
+  settings.setValue("pppAudioResponse",  _pppAudioResponseLineEdit->text());
   settings.setValue("pppSigmaCode",_pppSigCLineEdit->text());
   settings.setValue("pppSigmaPhase",_pppSigPLineEdit->text());
@@ -2301,4 +2309,5 @@
     bool enable3 = enable2 && !_pppQuickStartLineEdit->text().isEmpty();
     enableWidget(enable3, _pppMaxSolGapLineEdit);
+    enableWidget(enable3, _pppAudioResponseLineEdit);
 
     bool enable4 = enable && !_pppAntexFileChooser->fileName().isEmpty();