This command is used for two primary purposes. The first is to invoke the
e-Dif function once the unit has started up (with the e-Dif application active).
The second purpose is to update the e-Dif solution (calibration) using the
current position as opposed to the reference position used by the $JRAD,2
command.
This command has the following format:
$JRAD,3<CR><LF>
The receiver will respond with the following command if it has tracked
enough satellites for a long enough period before you sent the command.
This period of time can be from 3 to 10 minutes long and is used for
modeling errors going forward.
$>JRAD,3,OK<CR><LF>
If the e-Dif algorithms do not find that there has been sufficient data
collected, the receiver will send the following response:
$>JRAD,3,FAILED,Not Enough Stable Satellite Tracks
If you receive the failure message after a few minutes of operation, try again
shortly until the ‘OK’ acknowledgement message is sent. The e-Dif
application will begin operating as soon as the $JRAD,3,OK message has
been sent, however, you will still need to define a reference position for e-
Dif, unless relative positioning is sufficient for your needs.
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