TTL I/O card P104-WDG-CSMA

PCIPC/104-plustemperature

-PC/104 Plus Watchdog Timer card with software selectable timeout from 4 µsec -Watchdog open collector reset outputs -Temperature sensor with calibration pot -Temperature monitor / alarm -Temperature measurement with 8-bit A/D -Fan status and speed control -PCI/104 power monitor / limit alarm interrupt -Opto-isolated input to trigger reset -General purpose opto-isolated input -Two isolated outputs, current limited -TTL reset pushbutton input -Two general purpose 8-bit A/D inputs -External fused 5V and 12V power -Light sensor for enclosure security -Supported in DOS, Windows, Linux -PC/104 bus pass through connector PC/104 Plus Watchdog Timer Status Monitor This multifunction card contains a watchdog timer used to monitor the operation of your application program and operating system to initiate a system reset in case of a lockup. It can also monitor and control a variety of system hardware parameters. Three models with increasing features are available. P104-WDG-E Economy version which includes the full programmable watchdog timer with open collector outputs that can reset the computer. This requires your application program to have embedded watchdog software code that communicates a prompt to the timer. If this prompt is missed, a hard computer reset is initiated after the user programmed watchdog timer period has been reached. This is valuable where the lock up of the application is due to being in a software loop where some hardware watchdogs cannot detect.