NI PXIe-6341 PXI Multifunction I/O Module

The NI PXIe-6341 is a high-performance PXI Express multifunction I/O module engineered for precision data acquisition and real-time control. It integrates 16 single-ended or 8 differential analog inputs, 2 analog outputs, 24 configurable digital I/O channels, and 4 independent 32-bit counters into a single x1 PXI Express peripheral module. Built on the NI-STC3 timing architecture, this module delivers deterministic measurements and flexible synchronization across analog, digital, and counter subsystems.

– Technical Specifications

Analog Input
• 16 single-ended or 8 differential channels
• 16-bit resolution at 500 kS/s maximum per channel
• Input ranges: ±0.2 V, ±1 V, ±5 V, ±10 V
• Input impedance: >10 GΩ in parallel with 100 pF (device on); 1,200 Ω (device off)
• Input bias current: ±100 pA
• Small signal bandwidth: 1.2 MHz (-3 dB)
• Common-mode rejection ratio: 100 dB (DC to 60 Hz)
• Overvoltage protection: ±25 V (device on) or ±15 V (device off) for up to two channels
• Input FIFO: 2,047 samples
• Settling time: ±90 ppm (±6 LSB) at 2 μs, ±30 ppm (±2 LSB) at 3 μs, ±15 ppm (±1 LSB) at 5 μs convert intervals

Analog Output
• 2 channels, 16-bit resolution
• 900 kS/s maximum single-channel sampling rate

Digital I/O
• 24 channels, individually configurable as input or output
• 24 mA output drive current

Counter/Timers
• 4 independent 32-bit counters at 100 MHz
• Functions: PWM, encoder, frequency, event counting, triggering

Bus & Power
• PCI Express x1 (250 MB/s); compatible with x1, x4, x8, x16 slots
• Power consumption: 1.6 W @ +3.3 V, 19.8 W @ +12 V

– Key Features

• Independent analog and digital timing engines for retriggerable tasks
• DMA and programmed I/O data transfer support
• VHDCI and SHC68 connector options
• Programmable function interface for terminal configuration

– Typical Applications

Multi-channel sensor measurement, control system prototyping, test automation, industrial monitoring, and synchronized acquisition requiring precise timing.

– Compatibility & Integration

PXI Express x1 and x4 hybrid slot compatible; operates within standard PCI Express v1.1 specification.