Garmin GTR 225 Installation Manual page 94

Example message:
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GTR/GNC is running and ready to accept serial input, Push-to-Talk is stuck on, and COM is locked to
121.500 MHz.
B.2.4.2.5 GNC Status
This message is sent to indicate to the host that the GNC is running and ready to accept data on the serial
port, along with the current status of alerts. It will be sent once upon startup, when requested by the host,
and when an alert's status changes.
This message is only available in normal mode.
Message format:
"V" ..........................Message class. This is a VHF NAV message.
"41".........................Message identifier.
a...............................VLOC needs Service; (ASCII) 0 = OK, 1 = Lateral course guidance not
b ..............................VLOC Status; (ASCII) 0 = OK, 1 = VLOC and Glide slope course guidance
c...............................Glide Slope needs service; (ASCII) 0 = OK, 1 = Vertical course guidance not
d ..............................Glide Slope Status; (ASCII) 0 = OK, 1 = Glide slope course guidance not
e...............................NAV remote transfer stuck; (ASCII) 0 = OK, 1 = stuck.
Example message:
GNC is running and ready to accept serial input, and glide slope guidance is unavailable.
GTR 225/GNC 255 TSO Installation Manual
Page B-14
reliable.
not available.
reliable.
available.
$PGRMV4100010<chksm><CR><LF>
190-01182-02
Rev. B