QPC841 Quad Serial Data Interface card Page 867 of 894
Circuit Card Description and Installation
DTE/DCE mode switch settings
Table 272 shows the DTE/DCE mode selection switches for the four serial
ports.
Test switch setting
Switch SW16 is only used for factory testing; all of its switches must be set
to OFF for proper operation.
Table 272
QSDI card DTE/DCE mode switch settings
Port 1 – SW8 Port1 – SW9
Mode 1 2 3 4 5 6 1 2 3 4 5 6
DTE (Terminal) on on on on on on off off off off off off
DCE (Modem) off off off off off off on on on on on on
Port 2 – SW6 Port 2 – SW7
Mode 1 2 3 4 5 6 1 2 3 4 5 6
DTE (Terminal) on on on on on on off off off off off off
DCE (Modem) off off off off off off on on on on on on
Port 3 – SW4 Port 3 – SW5
Mode 1 2 3 4 5 6 1 2 3 4 5 6
DTE (Terminal) on on on on on on off off off off off off
DCE (Modem) off off off off off off on on on on on on
Port 4 – SW2 Port 4 – SW3
Mode 1 2 3 4 5 6 1 2 3 4 5 6
DTE (Terminal) on on on on on on off off off off off off
DCE (Modem) off off off off off off on on on on on on