Programming Manual 38
$JAGE,age<CR><LF>
Where maximum differential age timeout variable, ‘age’, may be a value from
6 to 8100 seconds.
The receiver will reply with the following response.
$>
4.4 $JOFF
This command allows you to turn off all data messages being output through
the current or other port, including any binary messages.
This command has the following definition.
$JOFF[,OTHER]<CR><LF>
When the ‘,OTHER’ data field is specified (without the square brackets), this
command will turn on the four NMEA messages on the other port.
There are no variable data fields for this message. The receiver will reply
with the following response.
$>
4.5 $JMASK
This command allows you to change the elevation cutoff mask angle for the
GPS engine. Any satellites below this mask angle will be ignored, even if
available. The default angle is 5 degrees, as satellites available below this
angle will have significant tropospheric refraction errors.
This message has the following format.