DVDO VP20 用户手册

Please be honest with yourself and ensure that you have understood the previous 

sections.  If you’re not confident about how binary = HEX = decimal and relates to 
ASCII, then you may want to check out the internet for more information on digital 
information technology – or contact our Technical Support Hotline at (U.S. Domestic) 1-
866-423-3836 extension 333, or (International) 1-408-395-4455 extension 333.  
Alternatively you may contact our support by email group at 

 
•  The first thing this writer suggests when learning the following automation protocol – 

is to realize that this is a machine talking to another machine – not a human talking to 
another human.  The automation protocol is written for maximum efficiency, clarity, 
and robustness of communication between two machines - all while allowing for 
future expansion without requiring us to re-write the protocol every time new 
features/products come out (thus commands that work in the new version of software 
should work in just about every other previous version/product – which has the exact 
same functional control). 

 
•  The second thing this writer suggests is learning and understanding the HEX notation 

– and how to convert decimal numbers and basic ASCII characters (0-9 and A-Z 
capitals) into HEX notation.  The serial interface works in bytes, and understands 
numbers – so the closer you can get to understanding this type of communication – 
the easier this will be for you. 

 

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