ViewSonic CDE4302 - Control and Data Communication; RS232 Control Connection

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3.3. Control Connection
3.3.1. Display control connection
Connect the [RS232C OUT] connector of PC to the [RS232C IN] connector of DISPLAY.
PC
[RS-232C]
[RS-232C IN]
3.4. IR Pass-through Connection
DVD / VCR / VCD
Remote Control
[IR IN]
[IR OUT]
(DVD / VCR / VCD)