Manual
 Card Setup 
Sealevel Systems DUOCOM: Page 5 
Set the jumper to ‘S’ if you are using more than one DUOCOM: in a bus or you 
wish to completely remove the pull-down resistor for hardware compatibility. 
Setting the adapter in this configuration when it is not accompanied by a 
pull-down resistor will prevent the ports from triggering an interrupt. 
E3
NS R
1
2
Figure 5 - Header E3, Sharing IRQ’s with another adapter 










