User`s guide

2 • Introduction
1.1 Features
• Fully compatible with ADLINK ACL-7120 and Advantech PCL-720
• 32 TTL digital input channels
• 32 TTL digital output channels
• High output driving and low input loading
• 3 independent programmable 16-bit down counter
• One 32-bit timer (two 16-bit counter cascaded together) with a 4MHz
time base
• One 16-bit counter with 4MHz time base
• Crystal-based frequency source
• Breadboard area for customized circuits
1.2 Applications
• Industrial and laboratory ON/OFF control
• Energy management
• Annunciation
• Security controller
• Product test
• Period and pulse width measurement
• Event and frequency counting
• Waveform and pulse generation
• BCD interface driver