Index: /trunk/BNC/bnchelp.html
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--- /trunk/BNC/bnchelp.html	(revision 738)
+++ /trunk/BNC/bnchelp.html	(revision 739)
@@ -315,5 +315,5 @@
 <p><a name="syncport"><h4>3.7.1 Output Port - optional</h4></p>
 <p>
-BNC can produce synchronized observations in binary format on your local host (IP 127.0.0.1) through an IP port. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no binary output is generated.</p>
+BNC can produce synchronized observations in binary format on your local host (IP 127.0.0.1) through an IP port. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no binary output is generated. Note that the sampling interval for the binary output equals the RINEX Observation sampling interval.</p>
 <p>The binary output is a continuous stream in the following order:</p>
 <pre>
Index: /trunk/BNC/bncwindow.cpp
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--- /trunk/BNC/bncwindow.cpp	(revision 738)
+++ /trunk/BNC/bncwindow.cpp	(revision 739)
@@ -271,5 +271,5 @@
   _waitTimeSpinBox->setWhatsThis(tr("<p>When feeding a real-time GNSS engine waiting for input epoch by epoch, BNC drops whatever is received later than 'Wait for full epoch' seconds. A value of 3 to 5 seconds is recommended, depending on the latency of the incoming streams and the delay acceptable to your real-time GNSS engine or products.</p><p>Note that 'Wait for full epoch' does not effect the RINEX Observation file content. Observations received later than 'Wait for full epoch' seconds will still be included in the RINEX Observation files.</p>"));
   _outFileLineEdit->setWhatsThis(tr("Specify the full path to a file where synchronized observations are saved in plain ASCII format. Beware that the size of this file can rapidly increase depending on the number of incoming streams."));
-  _outPortLineEdit->setWhatsThis(tr("BNC can produce synchronized observations in binary format on your local host through an IP port. Specify a port number here to activate this function."));
+  _outPortLineEdit->setWhatsThis(tr("BNC can produce synchronized observations in binary format on your local host through an IP port. Specify a port number here to activate this function. Note that the sampling interval for the binary output equals the RINEX Observation sampling interval."));
   _outEphPortLineEdit->setWhatsThis(tr("BNC can produce ephemeris data in RINEX ASCII format on your local host through an IP port. Specify a port number here to activate this function."));
   _rnxPathLineEdit->setWhatsThis(tr("Here you specify the path to where the RINEX Observation files will be stored. If the specified directory does not exist, BNC will not create RINEX Observation files.")); 
