Interface Specification Document
6.3 Messages and Data Format
Messages and Data are based on certain structures. Each structure will be described in detail
below.
NOTE
Some messages are applicable only to bathymetric systems and NOT applicable to Forward
Looking Sonar (FLS) systems. Those messages will contain the words (Bathymetric Systems
Only).
6.3.1 Command
Messages
All Command Messages are based on ASCII strings and build on the following syntax.
A Command Message: “*<TYPE>,PARAM1,PARAM2, …<CR><LF>”
Where:
Field Description
*
Start of Message (Asterix)
TYPE Message
Type
PARAMxxx
Parameters for the Message
<CR><LF>
Carriage Return, Line Feed
There are three different replies on a Command Message followed by <CR> and <LF>
Example:
Field Description
Reply String
Reply String
OK OK
Message
NG
No Good Message
Example:
•
Sent: *RANG,100<CR><LF>
•
The Reply (RS-232 only): OK<CR><LF>
6.3.1.1
Automatic Gain Messaage
•
DESCRIPTION:
This message controls the automatic gain in the 81-P processor.
•
SYNTAX:
*AGAN,N<CR><LF>
•
PARAMETERS:
N – Automatic gain level. 0 – Off, 1 – 10 automatic gain levels.
•
EXAMPLE:
*AGAN,1<CR><LF>
This example turns automatic gain on, if it was off, and sets out the threshold 1.
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SeaBat 8101 Operator's Manual
6-6
(ISD Rev 1.23) Version 3.02
