NETmc Marine DVR Manual-Rev7.2 Dec 2020 32 of 52
© NETmc Marine Ltd 2020
Appendix 2
Overlay Serial Parser
Parsing is the term used to describe the action of injesting, understanding and using selected parts
of information.
A typical example of this is to hook in a serial string being output from an ROV. The string will
typically start with a token (like $) with separate parts of the information separated (by a comma , or
space) – ending with another token (typically a CRLF – carriage return, line feed)
The NETmc DVR comes with an integrated parser system to let the user input these strings and
select parts to be displayed on the overlay where they can postioned, prefixed and suffixed.
e.g: a string may come from the ROV @ 9600 buad
$PCI,321.33,150.56,2,5,7,1,CRLF
We would refer to the ROV instruction manual to decode the string and find out that:
$PCI is the start token
Between the first set of comas, 321.33 is the heading
150.56 is the depth
The other numbers are ROV variables we don’t care about.
To set this up – open the overlay control panel by clicking the ‘Overlay’ button on the main software
interface.
Then when the overlay control page opens, click setup
And the select the Parser input you wish to use – there are 4 available – we will use IN#1 in this
example
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