The NI PXI-6031E is a multifunction DAQ module for PXI systems delivering 64 analog input channels at 16-bit resolution and 100 kS/s sampling rate. This card combines high-channel-count analog acquisition with analog output, digital I/O, and counter/timer functionality in a single slot, making it ideal for distributed measurement systems requiring synchronized data collection across multiple sensors.
– Technical Specifications
Analog Input
• 64 single-ended or 32 differential channels
• 16-bit resolution
• 100 kS/s maximum sampling rate
• Input voltage range: ±0.1 V to ±10 V (14 selectable ranges)
• Input impedance: 100 GΩ in parallel with 100 pF
• Measurement sensitivity: 0.0023 mV
• Maximum working voltage: ±11 V with respect to ground
• DC coupling only
• Onboard temperature sensor included
• Analog and digital triggering supported
Analog Output
• 2 channels, 16-bit resolution
• 100 kS/s output rate
• ±10 V bipolar or 0–10 V unipolar range
• Onboard self-calibration supported
Digital & Timer Functions
• 8 bidirectional digital I/O channels (TTL, 0–5 V)
• 2 counter/timer channels (24-bit, ±0.01% accuracy)
• Base clocks: 20 MHz and 100 kHz
• 1 frequency generator channel (4-bit, 10 MHz and 100 kHz clocks)
Memory & Transfer
• Analog input FIFO: 1,024 samples
• Analog output FIFO: 2,048 samples
• 3 DMA channels with scatter-gather mode support
– Key Features
Temperature drift protection circuitry maintains measurement accuracy across environmental variations. Onboard self-calibration eliminates the need for external calibration equipment. The 1,024-sample analog input buffer enables continuous acquisition without gaps during software processing. TTL digital I/O supports both input and output sinking and sourcing.
– Typical Applications
Automated test systems, process monitoring, data logging, sensor array measurement, and industrial control integration.
– Compatibility & Integration
NI-DAQmx and NI-DAQ 7 drivers provide streamlined configuration. The 100-pin female D-type connector integrates with SCC and SCXI signal conditioning modules for enhanced sensor measurement and high-voltage signal acquisition. PXI Trigger Bus and RTSI synchronization enable multi-module timing coordination. Power: +4.65 to +5.25 VDC at 1 A via the I/O connector.
