Omega Vehicle Security OMG-ULTRACOMM2-PCI RS-232 - Manual (Page 10)

Card Setup
Omega Engineering OMG-ULTRA COMM+2.PCI Page 6
Electrical Interface Selection
Each port on the OMG-ULTRA COMM+2.PCI has the ability to be used in either
RS-232 or RS-422/485. This is selectable via four 24 pin DIP-shunts at E1-E4.
Please use the following illustration to aid in the configuration of your electrical
interface.
E1
E2
Port 1
RS-232
RS-422
E3
E4
Port 2
RS-232
RS-422
RS-232
E1
E2
Port 1
RS-232
RS-422
E3
E4
Port 2
RS-232
RS-422
RS-422/485
RS-232 and RS-422/485
E1
E2
Port 1
RS-232
RS-422
E3
E4
Port 2
RS-232
RS-422
Figure 7 Headers E1 - E4, Electrical Interface Selection