Impulse 7203 - Manual (Page 5)

Card Setup
Sealevel Systems ULTRA COMM+2I.PCI Page 2
Card Setup
Electrical Interface Selection
Each port on the ULTRA COMM+2I.PCI has the ability to be used as RS-232,
RS-422 or RS-485. This is selectable via two DIP-switches, SW1 & SW2.
Please use the following examples to configure your adapter.
Figure 1- RS-232
Figure 2 - RS-422
Figure 3 - RS-485, 4-Wire with Echo
Figure 4 - RS-485 2-Wire with Echo
1 2 3 4 5 6 7
ON
OFF
8 9 10
1 2 3 T P P L L E
RS-232
1 2 3 4 5 6 7
ON
OFF
8 9 10
1 2 3 T P P L L E
RS-422
1 2 3 4 5 6 7
ON
OFF
8 9 10
1 2 3 T P P L L E
4-Wire
RS-485
W/Echo
1 2 3 4 5 6 7
ON
OFF
8 9 10
1 2 3 T P P L L E
2-Wire
RS-485
W/Echo