The NI PXI-6284 M Series Multifunction DAQ module is a high-performance data acquisition device engineered for demanding measurement and control applications in PXI systems. It integrates 32 single-ended (16 differential) analog input channels at 18-bit resolution with up to 625 kS/s single-channel sampling, 48 programmable digital I/O channels, 2 counter/timers, and a frequency generator, delivering versatile signal acquisition and generation across laboratory and industrial environments.
Technical Specifications
Analog Input
• 32 single-ended or 16 differential channels
• 18-bit resolution
• Single-channel maximum: 625 kS/s; multichannel aggregate: 500 kS/s
• Input ranges: ±0.1 V, ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V, ±10 V
• 50 ppm timing accuracy; 50 ns timing resolution
• DC input coupling
• Maximum working voltage: ±11 V relative to AI GND
• CMRR (DC to 60 Hz): 110 dB
• Input impedance (device on): >10 GΩ || 100 pF; (device off): 820 Ω
• Analog input FIFO: 2,047 samples
Analog Output
• 16-bit resolution
Digital I/O
• 48 channels, individually programmable as input or output
• 5 V TTL/CMOS compatible
• All channels bidirectional
Counter/Timers
• 2 counter/timers, 32-bit resolution
• Position measurements: X1, X2, X4 quadrature encoding with Channel Z reloading; two-pulse encoding
• Output applications: pulse generation, pulse trains with dynamic updates, frequency division, equivalent time sampling
• Edge counting, two-edge separation, period and semi-period measurement
• 8X and 2X prescaling per counter
• Internal base clocks: 80 MHz, 20 MHz, 0.1 MHz
• External base clock: DC to 20 MHz
• Base clock accuracy: 50 ppm
• Data transfers via dedicated scatter-gather DMA, interrupts, or programmed I/O
• FIFO: 2 samples per counter
Frequency Generator
• 1 channel with base clocks at 10 MHz and 100 kHz
• Divisors: 1 to 16
• Base clock accuracy: 50 ppm
• Output available on any output PFI or RTSI terminal
– Key Features
• High-speed analog acquisition with 625 kS/s single-channel performance
• Exceptional input impedance (>10 GΩ) and 110 dB CMRR for low-noise measurements
• Simultaneous analog input and output with dual 16-/18-bit resolution
• Flexible timing: 50 ns resolution supports precision synchronization
• Quadrature encoder support for motion control and position feedback
• Onboard scatter-gather DMA for autonomous data streaming
– Typical Applications
• Multi-channel signal acquisition in test and measurement systems
• Motion control and encoder feedback systems
• Precision timing and synchronization applications
• Frequency and period measurement
• Industrial data logging and process monitoring
– Compatibility & Integration
The PXI-6284 integrates into NI’s PXI modular platform, supporting DC to 20 MHz external clock sources and providing RTSI/PFI connectivity for inter-module timing and triggering.
