Description
Watchdog WDG-CSM Acces Controller Timer Card ISA Computer Malfunction Detector
Watchdog Timer
• Time-out: Software selectable from 10 µSec to 4800 seconds.
• Output Pulse Width: 16 mSec minimum
• Clock: 894.88625 KHz, derived from color clock (14.31818MHz÷16).
• Address: Continuously mappable within 000 to 3FF hex I/O range.
• Relay Output: DPDT, Form C, max. switching current 2A DC at 30W or 1.25A AC at 30VA max.
• Interrupt Output: Jumper selectable, IRQ 2-7, 10, 11, 12, 14, and 15.
Features
• Universal PCI, PCI-X, 3.3V and 5V compatible
• Watchdog timer to detect computer malfunction
• Optional computer power supply monitor
• Optional internal computer temperature monitor
• Optional measurement of computer internal temperature
• Optional fan-failure detection, watchdog time-out buzzer, and opto-isolated reset output
Status Monitor Options
• Voltages: IRQ and status register indication if +5, -5, +12, or -12 V exceed +6% of nominal.
• Temp. Alarm: IRQ and status register indication at 122°F (50°C) and above (factory adjusted).
• Temp. Sensor: 8 bit ADC, LSB = 0.7 F.
• Fan Speed: IRQ and status register indication whenever tachometer output drops below 50pps (custom factory settings available).
• Buzzer: Audio Alert signals watchdog timeout.
• LED Output: 5V, through 470 ohm resistor.
• Isolated Outputs: Complimentary opto-isolated reset outputs (2).
• Isolated Inputs: Two, opto-isolated, 5 mA typical load. Can be read at base address + 4.
