Lexmark Monochrome Laser Complete Printer Reference (1.7 MB) - Page 75

Serial Menu (continued) Menu item Data Bits Parity Honor DSR * Factory default Printer setting = 7 = 8* This setting lets you specify the number of data bits that are sent in each transmission frame. Refer to the Technical Reference for more information about data bits. = Even = Odd = None* = Ignore This setting lets you select the parity for serial input and output data frames. Refer to the Technical Reference for more information about parity. = Off* = On Honor DSR determines whether the printer uses the Data Set Ready (DSR) signal. DSR is one of the handshaking signals for most serial interface cables. If Honor DSR is set to Off, data received by the serial interface is seen as valid data. If Honor DSR is set to On, only data received while the DSR signal is in high condition is treated as valid data. 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. Set Honor DSR to On to prevent stray characters from printing. Changing printer settings 75