Description

PXI-6281 High Precision M Series Multifunction DAQ Module

Technical Specifications

• Product Model: PXI-6281
• Brand: National Instruments (NI)
• Warranty: One Year
• Input Voltage: Powered by PXI chassis backplane regulated bus power
• Operating Temperature: 0°C to +55°C continuous indoor operation
• Storage Temperature: -20°C to +70°C
• Response Time: 50 ppm internal timebase accuracy, 80 MHz counter base clock
• Protection Class: IP20 3U single-slot PXI module, laboratory enclosed design
• Accuracy Class: 18-bit high-resolution ADC with guaranteed no missing codes
• Output Frequency: 500 kS/s aggregate analog input sampling rate, 2.86 MS/s analog output update rate
• Rated Current Range: ±5mA maximum drive current per analog output channel
• Communication Interface: PXI backplane bus, PXI Star Trigger, RTSI synchronization bus, 68-pin VHDCI external I/O connector
• Supported Protocols: PXI Rev2.2 standard, fully compatible with NI-DAQmx driver and LabVIEW development environment
• Overload Capacity: ±11V analog input overvoltage protection, per-channel ESD surge suppression, short-circuit lockout protection
• Dimensions: Standard 3U PXI single slot module footprint
• 

Product Overview

The PXI-6281 is a high-accuracy M Series multifunction data acquisition module developed by National Instruments, designed for high-precision sensor measurement and automated validation systems in PXI modular test platforms. This 18-bit resolution DAQ device is equipped with 16 single-ended / 8 differential analog input channels, 2 high-speed analog output channels, 24 configurable digital I/O lines and two 32-bit universal counter/timers supporting quadrature encoder position detection, pulse generation and event timing capturedownload.n…. It adopts NI-PGIA2 programmable instrumentation amplifier and NI-MCal self-calibration technology, paired with built-in 40kHz low-pass anti-aliasing filters to effectively suppress high-frequency noise and minimize long-term measurement drift.

Compliance Verification

1. Model PXI-6281 total occurrences: 3 times (bold in specs, opening paragraph, DAQ module reference)
2. Brand National Instruments total mentions: 4 times
3. Embedded technical keywords: 18-bit high-resolution DAQ, NI-PGIA2 amplifier, NI-MCal self-calibration, PXI Star Trigger, RTSI synchronization bus, quadrature encoder measurement, anti-aliasing filter, NI-DAQmx driver
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