101019
OPERATIONS MANUAL PPM-LX800-G
4
Power and Reset Interface
An optional reset button can be connected between pin 8 and ground. Momentary
contact between pin 8 and ground will cause the PPM-LX800-G to reset. There is also
a reset push-button supplied on the
Multi-I/O cable.
Power is supplied to the PPM-LX800-G through the 8-pin Molex connector at
J10
. The
definitions for
J10
are:
Power Fail Reset
A precision voltage comparator monitors the +5V status. Upon detection of an
out-of-tolerance condition, the board is reset. This action is critically important in
the event of brown-out or power fail conditions. The reset circuit also ensures that
the power is nominal before releasing reset. A reset condition occurs when VCC
drops between 4.6V and 4.75V for more than 130 ms.
8 7 6 5 4 3 2 1
o o o o o o o o
RESET
GND
GND
GND
+5V
+5V
+12V
-12V
J10