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1 start of packet – Comtech EF Data LBC-4000 User Manual

Page 76

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LBC-4000 L-Band Up/Down Converter System

Revision 4

Serial-based Remote Product Management

MN/LBC4000.IOM

6–4

Controller-to-Target (Issued Command or Query)

Start of Packet

Target Address

Address Delimiter

Instruction Code

Code Qualifier

Optional Arguments

End of Packet

<

ASCII code 60


(1 character)

0000 (default)



(4 characters)

/

ASCII code 47


(1 character)




(3 characters)

= or ?

ASCII codes 61 or 63


(1 character)




(n characters)

Carriage Return

ASCII code 13


(1 character)

 
Packet Example:
 

<0000/RSH=30[cr] 

 

Target-to-Controller (Response to Command or Query)

Start of Packet

Target Address

Address Delimiter

Instruction Code

Code Qualifier

Optional Arguments

End of Packet

>

ASCII code 62


(1 character)

0000 (default)



(4 characters)

/

ASCII code 47


(1 character)




(3 characters)

= or ?

ASCII codes 61 or 63


(1 character)




(n characters)

Carriage Return

ASCII code 13


(1 character)

 
Packet Example: 

>0000/BBU=107[cr][lf] 

 
Detailed description of the packet components follow. 

6.2.2.1 Start of Packet

Controller‐to‐Target – This is the character ‘<’ (ASCII code 60). 

 

Target‐to‐Controller – This is the character ‘>’ (ASCII code 62). 
 
The ‘<’ and ‘>’ characters indicate the start of packet. They may not appear anywhere else within the body of the message.