WDT-02 - WDT-01 without daughter board, display, temperature sensor and relay
by ICP DAS

The WDT-01 is a watchdog card that provides a watchdog timer, a temperature monitor and power monitor functions. It also provides many signals and mechanisms such as: relay control, reset signal, and a power-good signal. The power-good signal allows users to control their system as soon as errors occur. There are many signals such as: IRQ, I/O status RS-232, LED, and Buzzer. These signals alert users and operators that errors have occurred. Once the WDT-01 has been powered on, it will monitor the power and the temperature of the PC automatically. The WDT-01 monitors the operations of software and hardware after the software enables the watchdog timer. The WDT-02 is an economical version of WDT-01.

• Watchdog timer:
  • Software programmable
    • from 0.01 second to 167772.15 seconds
      
• Temperature Monitor:
  • Temperature:0°C - 75°C;
  • Precision: +-1°C; onbord 2 digital LED display; Warming temperature
  • Setting: 50°C, 60°C, 70°C or none.
  • Computer power monitor:
  • PC Power +5V,External Power +12V
  • RS-232 output: speed: 9600, 4800, 2400 or 1200bps
• Transmit Message Includes:
  • watchdog timer state
  • Temperature status
  • Current Temperature scale
  • External & PC power status...etc. 
    
• Power Required:
  • 1.External power:+12V, 3W or
  • 2.Internal power:+12V, 3W
  • Printer-like I/O interface:
    • LPT0(3bch)
    • LPT1(378h)
    • LPT(278h)
    • or User Defined, only need 3 I/O ports

WDT / Watchdog

• power failure LED display only on terminal board.
• IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15
• 4 BIT TTL output:
• logic high: 2.4VDC min, source 400uA.
• logic low: 0.5VDC max, sink-10mA
• Two Relay for watchdog or temperature failure:
• Contacts: FoRM c.
• Max switched current: 1A 30V/DC
• Max switched voltage: 120VAC/60VDC
• Max carry current : 1.25AC/DC