If you need to disable the GNSS PGNs that the AIT2500/AIT5000 outputs then this is the procedure to follow….

Using the proAIS2 software, go to the Serial Data tab and then copy and paste the following commands in to the box at the bottom of the page and click the “Send” button (see image below).

• To disable GPS data output over NMEA 2000 send this command:
  $PSMT,0,3,0x2C75B2FA,1,n2kognss 0,0*15

 

• To enable it again send this command:
  $PSMT,0,3,0x2C75B2FA,1,n2kognss -1,0*39

 

 

….if the command was successfully received and actioned, you should see Transponder respond with…

• $PSMT,255……….etc.     (basically, the same as the command but 255 instead of 0 after the $PSMT, text)