User`s guide
Introduction  5 
  Digital I/O ( DIO) 
z Channel: 16 TTL compatible inputs and outputs 
z Input Voltage: 
 Low: Min. 0V ; Max. 0.8V 
 High: Min. +2.0V 
z Input Load: 
 Low: +0.5V @ -0.2mA max. 
 High: +2.7V @+20mA max. 
 Output Voltage: 
 Low: Min. 0V ; Max. 0.4V 
 High: Min. +2.4V 
z Driving Capacity: 
 Low: Max. +0.5V at 8.0mA (Sink) 
 High: Min. 2.7V at 0.4mA (Source) 
  Programmable Counter 
z Device: 82C54 
z A/D pacer: 32-bit timer( two 16-bit counter cascaded together) with a 
2MHz time base 
z Counter: One 16-bit counter with a 2MHz time base or external timer 
clock 
z Pacer Output: 0.00046 Hz ~ 100K Hz 
  General Specifications 
z I/O Base Address: 16 consecutive address location 
z Connector: 37-pin D-type connector, and two 20-pin ribbon connectors 
z IRQ Level: 3, 5, 6, 7, 9, 11, 12, 15 
z DMA Level: 5, 6, and 7 
z Operating Temperature: 0 C ~ 55 C 
z Storage Temperature: -20 C ~ 80 C 
z Humidity: 5 ~ 95%, non-condensing 
z Power Consumption: +5 V @ 400 mA typical 
+12V @ 260 mA typical 
z  PCB Dimension: Half-sized 163mm(L) X 123mm(H) 










