Decision Computer International Watch dog 1 Operation Manual page 4

Operations Manual Watch dog timer card
1.1 Applications
On industrial application, lots of computers are automatically
operating itself once the power turns on. In case the application got
hang surely the computer and its operation hang also. If you don't
boot your computer again it will not go back to its regular operation,
but not with the watchdog! Because once the watchdog was not
refresh, it will reset the computer automatically!
While using your computer, unexpectedly your modem got hang.
One way of connecting it again is to switch off then turn on your
modem to continue on working. But now, it's the new way around,
watch dog II will be automatically reset the modem power. It will
protect your application software system.
1.2 The Difference between Watch Dog I and II
The advantage of watch dog II over the watch dog I is that the watch
dog II has an expansion power control box that can control external
component. When reset signal activate of the watch dog II, it will
also reset the power of power control box.
User can also reset the power of power control box by watch dog II
directly, without reset whole the computer system.
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DECISION Computer International