Impulse 7404 - Manual (Page 6)

Card Setup
Sealevel Systems COMM+4.PCI Page 3
Interface Mode Examples SW1 – SW4
Figure 1- Switches SW1- SW4, RS-422
Figure 2 - Switches SW1- SW4, RS-485 ‘Auto’ Enabled, with ‘No Echo’ and the
termination resistor in circuit.
Figure 3 - Switches SW1- SW4, RS-485 ‘Auto’ Enabled, with ‘Echo’ and no
termination resistor in circuit.
1 2 3 4
ON
OFF
AT RT NE T
1 2 3 4
ON
OFF
AT RT NE T
1 2 3 4
ON
OFF
AT RT NE T