Garmin apollo sl30 comm Benutzerhandbuch

Seite von 88
 
 
Serial Interface Specifications 
Apollo SL30 Installation Manual 
61
<CR>  ....................... ASCII carriage return (0Dh). 
<LF>  ........................ ASCII line feed (0Ah). 
 
The maximum message length, including the start of message character (“$”) and the end of 
message <CR><LF> sequence, is 25 bytes. 
 
This message format is the same as is used in the SL40 VHF Comm Radio.  The SL30 will be 
able to accept all messages intended for an SL40 without generating a serial communications 
error.  It will ignore all of those messages, the only exception being those messages used to input 
Comm frequency lists from a remote source.   
M
ESSAGE 
D
EFINITIONS
 
I
NPUT 
M
ESSAGES
 
Remote COMM Frequency Lists 
The following two commands work together in allowing remotely connected devices to provide 
COMM frequency lists associated with an airport to the SL30. The host device should first send 
the Remote Airport Identifier Name command (message identifier 04), followed by a sequence 
of Remote Frequency Input commands (message identifier 05). The list type field is used to tie 
the two commands together. The SL30 will receive up to 10 Comm frequency lists, each 
containing up to twenty entries. 
Remote Airport Identifier Name 
This input command provides the airport identifier name that is used to identify to the user which 
airport facility that the list of frequencies is associated with.   
  
Message format: 
“C” ................ Message Class.  This is a COMM message. 
“04” ............... Message Identifier. 
t...................... List type: (ASCII) “0”, “1”,…,”9” 
aaaa................ Airport Identifier of the frequency list. Note that if the airport identifier is 
3 characters, then the 4th character will be filled with a space. Airport 
Identifiers are restricted to using ASCII characters 0-9 and A-Z. 
 
Example message: 
 $PMRRC041SLE<SP><chksum><CR><LF> 
 
Airport Identifier to be associated with list #1, Airport Identifier to display is “SLE  “.  
Remote Airport Frequency Input 
This message is used to input COMM frequency data used for the remote recall function. 
 
The data included is a character defining the list type, a character defining the frequency type 
(tower, ground, ATIS, ...) and 2 characters defining the frequency. The SL30 module will accept 
the first 10 frequencies received through the serial port for each airport.