The NI PCIe-6343 is a high-performance multifunction I/O device for PCI Express systems, delivering integrated analog input/output, digital I/O, and counter/timer functionality for demanding data acquisition and test automation. Built on NI-STC3 timing architecture, it provides independent analog and digital timing engines with retriggerable measurements and advanced synchronization. The device supports 16 differential or 32 single-ended analog input channels at 500 kS/s, 4 analog output channels at up to 900 kSa/s single-channel, and 48 digital I/O lines with hardware-timed capability at 1 MHz. Analog inputs feature 16-bit resolution, selectable ranges (±10 V, ±5 V, ±1 V, ±0.2 V), 1.2 MHz small-signal bandwidth, and ±25 V overvoltage protection when powered. Analog outputs utilize 16-bit DACs with multichannel aggregate rates to 719 kSa/s. Digital I/O operates at 5 V TTL with up to 32 hardware-timed lines. The 2,047-sample FIFO and 4,095-entry scan list memory support complex measurement sequences. Settling times vary by accuracy requirement: 2 µs for ±90 ppm, 3 µs for ±30 ppm, and 5 µs for ±15 ppm. Input impedance is 1,200 Ω with ±100 pA bias current and adjacent-channel crosstalk of -75 dB at 100 kHz. NI-DAQmx driver support enables straightforward configuration and integration across applications from basic data logging to complex automated test systems.
Technical Specifications
Analog Input
• 16 differential or 32 single-ended channels
• 16-bit ADC resolution
• 500 kS/s sampling rate (single and multichannel)
• Selectable ranges: ±10 V, ±5 V, ±1 V, ±0.2 V
• Maximum signal + common mode: +11 V
• Input impedance: 1,200 Ω
• Input bias current: ±100 pA
• Small-signal bandwidth: 1.2 MHz (-3 dB)
• Crosstalk: -75 dB adjacent channels, -90 dB non-adjacent (at 100 kHz)
• FIFO: 2,047 samples; Scan list memory: 4,095 entries
• Overvoltage protection (device on): ±25 V; (device off): ±15 V
• Maximum input current during overvoltage: ±20 mA per pin
• Settling times: 2 µs (±90 ppm), 3 µs (±30 ppm), 5 µs (±15 ppm)
Analog Output
• 4 channels, 16-bit DAC resolution
• Single-channel rate: 900 kSa/s
• Multichannel aggregate rate: 719 kSa/s
Digital I/O
• 48 total channels, 5 V TTL
• Hardware-timed lines: up to 32 at 1 MHz
– Key Features
• NI-STC3 timing and synchronization engine
• Independent analog and digital timing
• Retriggerable measurement capability
• Versatile counter/timer operations
• DAQmx driver and configuration support
– Typical Applications
• Data acquisition and logging
• Test and measurement automation
• Control system integration
• Signal monitoring and analysis
– Compatibility & Integration
PCI Express bus interface; NI-DAQmx software support.
