NI PCI-DIO-32HS High-Speed Digital I/O Device

The NI PCI-DIO-32HS is a high-speed digital I/O device for PCI bus systems, delivering 32 channels of configurable digital input/output. Built on the National Instruments DAQ-DIO ASIC, it supports pattern I/O and handshaking operations at elevated data rates with deterministic timing through onboard memory and bus-master DMA control.

– Technical Specifications

• Channels: 32 digital I/O lines organized into four 8-bit ports; configurable as two 8-bit groups, two 16-bit groups, or one 32-bit group
• Data Rate: Up to 10 MHz per channel; 2 MHz for pattern I/O operations
• Logic Levels: 5 V TTL/CMOS (0–0.8 V for low state; 2.0–5.0 V for high state)
• Output Drive: 24 mA sink/source per data line
• Input Termination: Diode-terminated to suppress signal overshoot at TTL levels
• Onboard Memory: 32 MB per data path
• Bus Interface: 32-bit PCI at 5 V; supports CompactPCI and PXI chassis
• Connector: Single 68-pin SCSI-II male connector for I/O transmission
• Synchronization: RTSI bus or PXI trigger bus for clock and trigger distribution
• Operating Temperature: 0 to 55 °C

– Key Features

• PCI bus-master operation with high-speed DMA via MITE interface
• Jumperless, switchless configuration
• Independently selectable power-on states for data and control lines
• Dimensions: 175 mm (length) × 107 mm (height)

– Typical Applications

Pattern generation and capture at sustained rates; synchronized digital control across multi-device systems; deterministic trigger-based I/O operations in CompactPCI and PXI instrumentation.

– Compatibility & Integration

Supported by NI-DAQmx and NI-DAQ driver software. Compatible with LabVIEW, LabWindows/CVI, ComponentWorks, Visual Basic, C/C++, and VirtualBench development environments.