The NI PXI-6229 is a multifunction data acquisition module engineered for PXI and SCXI systems. It delivers 16 differential or 32 single-ended analog inputs at 16-bit resolution with 250 kS/s sampling, four 16-bit analog outputs, and 48 digital I/O channels including 16 programmable function inputs. This module integrates counter/timer capabilities and direct SCXI compatibility, making it suitable for automated test, data logging, and process control without requiring external signal conditioning.
Technical Specifications
Analog Input Performance
• 16 differential or 32 single-ended channels
• 16-bit resolution with 250 kS/s maximum sample rate (single and multichannel aggregate)
• Input ranges: ±0.2 V, ±1 V, ±5 V, ±10 V per channel
• Maximum working voltage: ±11 V of AI GND (signal + common mode)
• CMRR: 92 dB (DC to 60 Hz)
• Input impedance: >10 GΩ || 100 pF (device on); 820 Ω (device off)
• Small signal bandwidth (-3 dB): 700 kHz
• Crosstalk: -75 dB adjacent channels, -90 dB non-adjacent (at 100 kHz)
• Overvoltage protection: ±25 V (device on), ±15 V (device off) on up to two pins
• 4,095-sample input FIFO; 4,095-entry scan list memory Analog Output Specifications
• 4 channels, 16-bit resolution
• Output range: ±10 V DC
• Maximum update rates: 833 kS/s (single), 740 kS/s (two), 666 kS/s (three), 625 kS/s (four channels)
• Output impedance: 0.2 Ω
• Output current drive: ±5 mA
• Overdrive protection: ±25 V (10 mA maximum)
• 8,191-sample output FIFO shared among active channels Digital I/O and Timing
• 48 total digital channels: 32 static (P0.0–31), 16 PFI (PFI 0–15)
• Individually programmable input/output direction
• ±20 V input voltage protection on up to two pins
• Current drive (low output): -24 mA for P0 channels
• Selectable digital debounce filter: 125 ns, 6.425 µs, 2.56 ms, or disabled – Key Features • NI-DAQmx driver support for LabVIEW, LabWindows/CVI, and ANSI C
• SCXI signal conditioning platform compatibility for sensor and high-voltage applications
• Integrated counter/timer functionality
• Input bias current: ±100 pA
• Settling time ranges from 4 µs to 7 µs depending on accuracy requirements – Typical Applications Automated test systems, data logging, process control, sensor measurement, and high-voltage applications requiring signal conditioning. – Compatibility & Integration Fully compatible with PXI chassis and SCXI platforms. Software support includes LabVIEW, LabWindows/CVI, and ANSI C via NI-DAQmx.
