The National Instruments AT-MIO-16H-9 is a high-performance multifunction I/O board for PC/AT systems, delivering integrated analog input, analog output, digital I/O, and timing/triggering in a single ISA slot. Optimized for high-level signal acquisition, this board handles strain gauges, voltage/current sources, RTDs, and thermocouples with 12-bit precision and minimal noise (0.1 LSBrms). It supports data acquisition rates to 100 kS/s and features dual-channel DMA with FIFO buffering for reliable operation in Windows environments with extended interrupt latencies.
Technical Specifications
• Analog Inputs: 16 single-ended terminals (configurable as 8 differential channels)
• ADC: 12-bit converter, 9 µs conversion time, up to 100 kS/s acquisition rate
• Input Noise: 0.1 LSBrms typical
• Differential Nonlinearity: ±0.5 LSB typical
• Software-Programmable Gain: 1, 2, 4, 8
• Analog Outputs: Two 12-bit DACs, buffered
• Digital I/O: 8 TTL lines (5 V logic)
• Timing/Triggering: Three 16-bit counter timers, four triggers
• Buffering: 256-word ADC buffer with dual-channel DMA and FIFOs
• Interface: RTSI bus for synchronization and timing control
– Key Features
• High-speed 12-bit settling for precision data capture
• ADC conversion completes in 9 microseconds per sample
• RTSI bus enables centralized trigger synchronization across multiple boards and instruments
• SCXI system integration for expanded analog signal conditioning and acquisition
• Programmable input gain eliminates external amplifier requirements
– Typical Applications
• Industrial process monitoring and control
• Laboratory data acquisition systems
• Multi-channel sensor signal measurement and logging
• Real-time control systems requiring synchronized I/O operations
– Compatibility & Integration
The board operates with NIDAQ drivers and supports programming in LabVIEW and LabWindows. Direct interfacing with National Instruments SCXI modules enables scalable signal conditioning for high-channel-count acquisition setups.
