Azur 851C - RS232 Codes April 03, 2024 10:36 Azur 851C RS232 Codes. Related articles Where can I find useful documents such as 851N CONTROL4 DRIVER, RTI DRIVER, 851N RS232 CODES, 851N IR REMOTE CONTROL CODES, 851N FILTER SETTINGS ? EDGE A - RS232 Codes RS232 protocol for CXA61/CXA81/81 Mk II Azur 851C - Technical Specification 851C What is USB Audio?