The Measurement Computing PCI-DIO96H is a high-density digital I/O board for PCI bus systems delivering 96 configurable lines organized into four independent 24-bit groups. Each group contains three 8-bit ports (PORTA, PORTB, PORTC) with PORTC splittable into two 4-bit nibbles, all individually programmable as input or output. The board uses 74LS373 input buffers with high input impedance and 74S244 output drivers capable of sinking 64 mA and sourcing 15 mA at 5V logic levels. On power-up and reset, all I/O bits default to input mode. The board plugs directly into the PCI slot with no manual configuration required—all addresses are automatically assigned by system BIOS and plug-and-play software.
– Technical Specifications
Digital I/O Architecture
• 96 total lines organized as four 24-bit groups
• Each group based on 82C55 Mode 0 emulation
• Port structure: PORTA (8-bit), PORTB (8-bit), PORTC (8-bit, optionally split into 4-bit nibbles)
• Input buffers: 74LS373 chips with standard high input impedance
• Output drivers: 74S244 chips, buffered TTL with 64 mA sink / 15 mA source capability
• Voltage compatibility: 5V logic level
• Default state: All I/O bits set to input on power-up and reset
Connectivity
• Main I/O connector: 100-pin high-density Robinson-Nugent male
• Cable option: C100FF-x splits 100 lines into two 50-pin connectors (pins 1–50 and 51–100)
• Optional SIP resistor networks: 10 kOhm pull-up or pull-down per port, software-selectable
– Key Features
• Fully plug-and-play with no switches or jumpers
• Each port individually configurable as input or output
• High-density 100-pin connector for space-constrained applications
• Software-controlled board addressing via BIOS and plug-and-play enumeration
– Typical Applications
Machine control, test automation, industrial data acquisition, and legacy PCI-based measurement systems requiring flexible, buffered digital I/O with TTL drive levels.
– Compatibility & Integration
Software
• InstaCal utility for installation and testing
• TracerDAQ® for data acquisition and signal generation
• Universal Library supporting Visual Studio (.NET, C++, C#, Basic, Basic .NET), DASYLab®, NI LabVIEW™, and MATLAB® Data Acquisition Toolbox™
• Code compatible with PCI-DIO96H and USB-DIO96H software
Operating Systems
• Windows® 8, 7, Vista®, XP SP2 (32-bit or 64-bit)
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