HP d640 HP D640 High-Volume Printer - Installation Manual (Printer and Accesso - Page 127
Parity, DTR Polarity, XON/XOFF: Enable XON/XOFF flow control
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Host Interface Procedure 3: Setting the Printer's Communication Interface Parity 1. Select parity. 2. Set the parity check condition. • NONE: No parity check • EVEN: Even parity check • ODD: Odd parity check Flow 1. Select flow. 2. Set the flow control type of the serial interface DTR signal. • NOFLOW: Disable XON/XOFF flow control • XON/XOFF: Enable XON/XOFF flow control • ROBUST: Enable ROBUST XON/XOFF flow control DTR Polarity 1. Select dtr. 2. Set the method of handling the serial interface Data Terminal Ready (DTR) signal. • HI/LO: DTR polarity high for ready and low for not ready • LO/HI: DTR polarity low for ready and high for not ready • HI/HI: DTR polarity permanently high • LO/LO: DTR polarity permanently low Host Computer Interface Installation and Configuration 3-25