QPC841 Quad Serial Data Interface card Page 879 of 906Circuit Card Description and InstallationDTE/DCE mode switch settingsTable 277 shows the DTE/DCE mode selection switches for the four serialports.Test switch settingSwitch SW16 is only used for factory testing; all of its switches must be setto OFF for proper operation.Table 277QSDI card DTE/DCE mode switch settingsPort 1 – SW8 Port1 – SW9Mode 1 2 3 4 5 6 1 2 3 4 5 6DTE (Terminal) on on on on on on off off off off off offDCE (Modem) off off off off off off on on on on on onPort 2 – SW6 Port 2 – SW7Mode 1 2 3 4 5 6 1 2 3 4 5 6DTE (Terminal) on on on on on on off off off off off offDCE (Modem) off off off off off off on on on on on onPort 3 – SW4 Port 3 – SW5Mode 1 2 3 4 5 6 1 2 3 4 5 6DTE (Terminal) on on on on on on off off off off off offDCE (Modem) off off off off off off on on on on on onPort 4 – SW2 Port 4 – SW3Mode 1 2 3 4 5 6 1 2 3 4 5 6DTE (Terminal) on on on on on on off off off off off offDCE (Modem) off off off off off off on on on on on on
