P104-WDG-CSMA - ACCESI I/O P104-WDG-CSMA PC/104 Plus Watchdog Timer Status Monitor 40-pin...
- Part Number:
- P104-WDG-CSMA
- Model Number:
- P104-WDG-CSMA
- Make:
- ACCESI I/O
- Lead Time:
- Available
- Qty In Stock:
- Available
ACCESI I/O P104-WDG-CSMA PC/104 Plus Watchdog Timer Status Monitor 40-pin right-angle shrouded 2x20 header JP2, Reset Isolated Input, 2-pin right-angle header with 0.1" spacing Simple Type: Data Acquisition
This advanced version builds on the P104-WDG-CSM but has all available features populated. Two undedicated 8-bit A/D (Analog Inputs) with a 0-5V range can be used to measure critical system parameters such as battery voltage or humidity. The fan speed control can be used in conjunction with the temperature monitor to maintain internal temperatures in the enclosure by the control of fan speed. The duty cycle of fan power (+12V) is pulse-width modulated to speed up the fan when temperature increases. If no current is detected or the duty cycle reaches 100%, an interrupt occurs. Another advanced feature is a Security Light Sensor used to detect if a darkened interior of the enclosure is opened letting in light. An external remote reset through a dedicated opto-isolated digital input is provided that can allow any transition between 3-18V to reset the computer. This reset could be triggered remotely from an RS-232 signal transition if available. Finally, additional fused 5V and 12V pins are provided on I/O co nnector for powering external circuitry or device
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Features
- External fused 5V and 12V power
- Fan status and speed control
- General purpose opto-isolated input
- Light sensor for enclosure security
- Opto-isolated input to trigger reset
- PC/104 bus pass through connector
- PC/104 Plus Watchdog Timer card with software selectable timeout from 4 µsec
- PCI/104 power monitor / limit alarm interrupt
- Supported in DOS, Windows, Linux
- Temperature measurement with 8-bit A/D
- Temperature monitor / alarm
- Temperature sensor with calibration pot
- TTL reset pushbutton input
- Two general purpose 8-bit A/D inputs
- Two isolated outputs, current limited
- Watchdog open collector reset outputs
Specifications
- Digital Inputs: Isolated: Two, limited through a 330 ohm resistor - one dedicated RESET input, one general purpose available
- Digital Outputs: Isolated: Two, 5V through a 330 ohm resistor Non-Isolated: Two, controlled with isolated outputs to drive LED (up to 15mA sink/source) Reset Outputs: One active low open collector, One active high with 1K pull-up Fan Pulse Width 120 nsec. min., 31 msec. max.
- Environmental: Operating Temp: 0 to +70°C (optional -40 to +85°C) Storage Temp: -50°C to +120°C Humidity: 10% to 90% RH, non-condensing Power: +5VDC @ 125mA typical
- Status Register: Voltages: If +5V, +12V or -12V varies by more than ±6% Temp Alarm: IRQ and status register indication if temperature is above 122°F (50°C) Temp Digitizer: 8-bit ADC, LSB
- Watchdog Timer: Time-out: Software selectable from 4 µsec to 2060 sec Clock: 2.08333 MHz, derived from computer clock (33 MHz ÷ 16) Address: 8-Bit I/O Mapped
Applications
- None Available
Aliases
- None Available
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