190-01182-02
GTR 225/GNC 255 TSO Installation Manual
Rev. B
Page B-13
B.2.4.2.2 COM Volume Level
This message is used to output the COM volume level.
Message format:
“C” ..........................Message class. This is a GTR/GNC COM message.
02 ............................Message ident.
“1”...........................Headphone Volume.
vv ............................Volume level: 00-FFh; use encoded hex (30h-3Fh).
Example message:
$PGRMC02130<chksm><CR><LF>
The headphone volume level is 30h out of FFh.
B.2.4.2.3 COM Software Version
This message is used to output the COM module software version.
Message format:
“C” ..........................Message class. This is a GTR/GNC COM message.
03 ............................Message ident.
vvvv ........................Software version in ASCII.
Example message:
$PGRMC030100<chksm><CR><LF>
COM Software version is 01.00.
B.2.4.2.4 GTR/GNC COM Status
This message is used to output the GTR/GNC COM Status.
Message format:
“C” ..........................Message class. This is a GTR/GNC COM message.
13 ............................Message identifier
a...............................COM needs service; (ASCII) 0 = OK, 1 = COM transmit capabilities not
reliable.
b ..............................COM status; (ASCII) 0 = OK, 1 = COM functions not available.
c...............................Push-to-Talk key stuck; (ASCII) 0 = OK, 1 = Stuck.
d ..............................Remote Transfer stuck; (ASCII) 0 = OK, 1 = Stuck.
e...............................Remote Tune Up stuck; (ASCII) 0 = OK, 1 = Stuck.
f ...............................Remote Tune Down stuck; (ASCII) 0 = OK, 1 = Stuck.
g ..............................COM TX Power Limited; (ASCII) 0 = OK, 1 = Transmit power limited.
h ..............................COM locked out; (ASCII) 0 = OK, 1 = Active frequency locked at 121.500
MHz.
Summary of Contents for GNC 255
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