Lexmark Optra S 1620 User's Guide (7.1 MB) - Page 126

Using Your Printer Using the Operator Panel and Menus Serial Menu Selections (Continued) Menu Item Values and Functions of the Menu Items Honor DSR Off* On DSR is one of the handshaking signals for most serial interface cables. The Honor DSR setting determines whether the printer accepts the incoming print data. If Honor DSR is Off, data received on pin 3 of serial interface is seen as valid data. If Honor DSR is set On, only data received while the DSR signal is in high condition is treated as valid data. The serial interface uses DSR to determine if data arriving on pin 3 is sent by the host computer or created by electrical noise in the serial cable. This electrical noise can cause receive errors and create corrupted data that causes stray characters to print. Set Honor DSR On to prevent any stray characters from printing. * Factory Default Network Menu Three option cards can be installed in the Optra S 2455, two option cards can be installed in the Optra S 1855, and one option card can be installed in the Optra S 1625 and Optra S 1255. If Network Option cards are installed, you see NETWORK MENU on the display. Press Select. If the card is installed in connector 1 on the printer system board, the functions for that card are displayed as a value in the Network Option 1 menu. If the card is installed in connector 2 on the printer system board, the functions for that card are displayed as a value in the Network Option 2 menu. If the card is installed in connector 3 on the printer system board, the functions for that card are displayed as a value in the Network Option 3 menu. Functions for the three networks operate independently of each other. The following menu items are available for the Network Option 1, Network Option 2 and Network Option 3 menus. Change the settings for this menu item to set up network communications. 110 Using the Operator Panel and Menus