I am
trying to control my Faroudja NRS via the CM232 module.

However I cannot get it work. Indeed, I don't what a string should contain
exactly?

The manual said the string should start with the header "NRS" and then a
comma and then the command. The command should then be terminated with a
carriage return (0x13).

What does the last sentence means exactly? And what exactly should I type on the string

Thanks

Heinz