Lexmark T630n User's Reference - Page 262
Data Bits, Parity, Honor DSR
UPC - 734646532211
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Using the printer menus Data Bits Purpose: To specify the number of data bits that are sent in each transmission frame. Values: 7 8* See also: Technical Reference Parity Purpose: To select the parity for serial input and output data frames. Values: Even Odd None* Ignore See also: Technical Reference Honor DSR Purpose: To determine whether the printer uses the Data Set Ready (DSR) signal. DSR is one of the handshaking signals for most serial interface cables. Values: Off* All data received by the serial port is treated as valid data. On Only data received while the DSR signal is high is treated as valid. The serial interface uses DSR to distinguish data sent by the computer from data created by electrical noise in the serial cable. This electrical noise can cause stray characters to print. Select On to prevent stray characters from printing. Note: Honor DSR can be used by ports configured for RS-232. 262