Comtech EF Data MBT-4000B - Manual (Page 39)

Multi-Band Transceiver System Revision 0
Remote Command MN/MBT4000B.IOM
A–3
A.4 P
ACKET
S
TRUCTURE
Controller-to-Target:
Start of Packet Target
Address
Address
De-limiter
Instruction
Code
Code
Qualifier
Optional
Arguments
End of Packet
<
ASCII code 60
(1 character) (4 or 6
characters)
/
ASCII code 47
(1 character) (3 characters)
= or ?
ASCII code
61 or 63
(1 character) (n characters)
Carriage
Return
ASCII code 13
(1 character)
Example: <0412/MUT=1{CR}
Target-to-Controller:
Start of Packet Target
Address
Address
De-limiter
Instruction
Code
Code Qualifier Optional
Arguments
End of Packet
>
ASCII
code 62
(1 character) (4 or 6
characters)
/
ASCII
code 47
(1 character) (3 characters)
=, ?, !, or *
ASCII code 61,
63, 33 or 42
(1 character)
(From 0 to n
characters)
Carriage Return,
Line Feed
ASCII code 13,10
(2 characters)
Example: >0412/MUT={CR}{LF}
Each of the components of the packet is now explained.
A.4.1 S
TART
O
F
P
ACKET
Controller to Target: This is the character ‘<’ (ASCII code 60)
Target to Controller: This is the character ‘>’ (ASCII code 62)
Because this is used to provide a reliable indication of the start of packet, these two characters
may not appear anywhere else within the body of the message.
A.4.2 A
DDRESS
Up to 9999 devices can be uniquely addressed. In both RS-232 and RS-485 applications, the
permissible range of values is 1 to 9999. It is programmed into a target unit using the remote
control port.
The BDC and BUC sub-devices may also be addressed by appending the corresponding sub-
device address. The sub-device address is ‘A1’ for the BXC.
For example, a mute command addressed to a BUC attached to an MBT-4000B at address 0412
will be:
<0412A1/MUT=1{CR}