V A L A V I O N I C S L T D
N A V 2 0 0 0 N A V I G A T I O N S Y S T E M
I N S T A L L A T I O N A N D O P E R A T O R ’ S M A N U A L
Pre-Release Issue
Page 25 of 29
Sept. 2013
$PMRRV34310<chksm><CR><LF>
Set the OBS value to 310 degrees.
COM V
OLUME AND
S
QUELCH CONTROL
This message is used to adjust the volume and squelch levels of the COM unit
Message format:
"V" ..................... Message class - VHF NAV Message
"71" .................... Message Identifier
"vs" .................... Volume level and Squelch Level:
v = Desired volume level in encoded hexadecimal, where v =
desired level + 0x30 with a range between 0 - 20, 0 being
muted
s = Desired squelch level in encoded hexadecimal, where s =
desired level + 0x30 with a range between 0 - 20, 0 being off
Example Message:
$PMRRV71;?<chksum><CR><LF>
This example command would set the volume level at 11 and the squelch at 15.
COM M
IC
G
AIN AND
S
IDETONE CONTROL
This message is used to adjust the volume and squelch levels of the COM unit
Message format:
"V" ..................... Message class - VHF NAV Message
"72" .................... Message Identifier
"ms" ................... Volume level and Squelch Level:
m = Desired mic gain level in encoded hexadecimal, where m =
desired level + 0x30 with a range between 1 - 20
s = Desired sidetone level in encoded hexadecimal, where s =
desired level + 0x30 with a range between 1 - 20.
Example Message:
$PMRRV72;?<chksum><CR><LF>
This example command would set the mic gain level at 11 and the sidetone at 15.
