• 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

This multifunction card contains a watchdog timer. Additionally, one or more options may be included on your card. These are: a computer power supply monitor, a computer internal temperature monitor, an optional capability to read the temperature, a fan-speed monitor, and an on-card buzzer to signal watchdog timeout. PCI-WDG-CSM continuously monitors critical PC functions. When a fault occurs, the card automatically generates outputs that can be used either to initiate corrective action or to generate alarms.

Watchdog Timer

• Time-out: Software selectable from 4 µSec to 2060 seconds.
• Output Pulse Width: 16 mSec minimum.
• Clock: 2.08333 MHz, derived from computer clock (33 MHz÷16).
• Address: Continuously mappable within 000 to FFFF 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: PCI-INTA.

Status Monitor Options

• Option 1: IRQ and status register indication if +5, +12, or -12 V exceed +/- 6% of nominal.
• Option 2: Temp. Alarm IRQ and status register indication at 122^o F and above.
• Option 3: Temp. Measurement from A/D converter, LSB = 0.7^o F (factory adjustable).
• Option 4: Fan Speed: IRQ and status register indication whenever fan's tachometer output drops below 50pps (custom factory settings available).
• Buzzer: Audio Alert signals watchdog timeout. Can be disabled by software.
• LED Output: 5VDC, through 470 ohm resistor
• Isolated Outputs: Complementary opto-isolated reset outputs (2).
• Isolated Inputs: Two, opto-isolated, 5 mA typical load. Can be read at base address + 4. These bits generate Change-of-State IRQs.
• Option 5: Replaces opto-isolated Reset outputs with computer generated digital outputs. The Buzzer does not function when this option is installed.
• Option 6: Pulse-width modulates power to the fan to control fan speed. Speeds fan up when excessive internal computer temperature is sensed.

Environmental

• Operating Temperature Range: 0^o to +60^o C.
• Storage Temperature Range: -50^o to +120^o C.
• Humidity: 10% to 90% RH, non-condensing.
• Power Required: +5 VDC at 125 mA with no options, 250 mA with all options installed.  
• Size: 6.7" (170 mm) long x 3.9" (99 mm) high.

• PCI-WDG-CSM
• Option 01
• Option 02
• Option 03
• Option 04
• Option 05
• Option 06