In the NMEA settings sub tab you set your preferences regarding NMEA matters, like the NMEA0183 version you prefer, 
what distance units NemaStudio should deal with etc.
 
 
 
 
 
 NMEA0183 Version 
The NMEA0183 version NemaTalker should use when generating NMEA sentences. 
This option is included to remain compatible with older NMEA devices that do not support the latest NMEA version. 
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 Default Magnetic Variation 
Here you can set a default magnetic variation 
that NemaStudio initially applies when creating a new instrument.  
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 Default UTC Offset 
The UTC offset NemaStudio should apply as default when instantiating a new GPS module. 
The value is used in the $GPZDA sentence and can be changed any time in the GPS module itself. 
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 Distance Unit 
You can set either Nautical Miles or Kilometers 
as a distance unit 
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 $GPGGA 
 Extensions 
Parameters for $GPGGA sentences when using 
differential GPS data 
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 GPS Position Accuracy 
By default NemaStudio applies a 5 decimal digit precision. 
Not all applications can handle this. Sometimes a less 
precision is needed in order not to have the connected 
application crash. 
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 $GPDTM Datum 
 reference data 
Parameters for the $GPDTM sentence. 
  
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 UTC handling 
Choose to use the actual UTC Date and Time or an artificial UTC Date and Time you set yourself. 
UTC Date/Time is used in GPS. 
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 Max. Sentence length 
If checked NemaStudio will check if the number of characters in a sentence does not exeed 79, 
between starting delimiter "$"or "!" and the terminating CR/LF. 
Note that this does not include the TAG block. 
  
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 Multicast Prefix 
Check this if UdPbC (followed by null character) is required when UDP Multicast is used 
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 TAG Block 
 parameters 
  
Select Tag Block parameters if TAG Block is to be used 
  
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