User`s guide

4 • ACLD-9185
1.2.3 Power Source Setting
The ACLD-9185's power source can come from internal source (provided
from the PC bus via the CN1 20-pin connector) or external source
(provided by external power supply). The +5V is used to drive the TTL
buffer circuits and the LED on board. The +12V is used to drive the
Relays. The description of power source is specified as following table:
The power sources can be selected by setting jumpers according to the
following table.
Internal +5V
Internal +12V
(default)
+5V
+12V
External +5V
External +12V
+5V
+12V
Internal +5V
External +12V
+5V
+12V
External +5V
Internal +12V
+5V
+12V
Internal power
+12V
+5V
Provided by PC bus via the CN1 20-pin
connector
External power
+12V
+5V
Provided by external DC source via
connector CN3