NI PXI-6233 M Series Multifunction Data Acquisition (DAQ) Board

The NI PXI-6233 M Series is a 16-bit multifunction DAQ board engineered for high-performance test, measurement, and control applications in automated test systems and research environments. This PXI module combines 8 differential/16 single-ended analog inputs, 2 analog outputs, 6 digital inputs, 4 digital outputs, and two 32-bit counter/timers in a compact form factor. Built-in channel-to-bus isolation (1,400 Vrms/1,950 VDC for 5 s) and 60 VDC continuous bank isolation provide robust signal integrity in high-voltage or electromagnetically noisy settings.

– Technical Specifications

Analog Input
• 8 differential or 16 single-ended channels
• 16-bit resolution, 250 kS/s maximum sample rate
• Input ranges: ±0.2 V, ±1 V, ±5 V, ±10 V (DC coupled)
• Input impedance (device on): >10 GΩ parallel with 100 pF
• Input bias current: ±100 pA
• Small signal bandwidth (−3 dB): 700 kHz
• CMRR (DC to 60 Hz): 95 dB
• 4,095-sample input FIFO

Analog Output
• 2 channels, 16-bit resolution
• Maximum output rate: 500 kS/s
• ±10 V range (DC coupled), 6 μs full-scale settling time

Digital I/O
• 6 digital inputs, 4 sinking digital outputs
• Compatible with 24 V (sourcing/sinking) or 5 V TTL/CMOS
• Per-channel selectable debounce filters
• Programmable power-up states for digital outputs

Counter/Timers
• Two 32-bit channels, 80 MHz maximum frequency
• Quadrature encoder support (X1, X2, X4 angular or two-pulse linear)

– Key Features

• Advanced timing and triggering for precise data acquisition control
• Dual-level isolation architecture for noise rejection and operator safety
• Flexible analog input configurations (differential or single-ended)
• Integrated digital filtering on input lines

– Typical Applications

• Automated test equipment (ATE) systems
• Environmental and materials testing
• Multi-channel sensor data logging
• Motion control and encoder measurement
• Real-time process monitoring

– Compatibility & Integration

PXI form factor integration with NI modular instrumentation platforms and LabVIEW software.