Channel & Physical Interface Configuration

• Channel layout: 4 fully simultaneously sampled analog input channels, no analog output channels
• Front panel interfaces: 4 isolated female BNC signal ports, 1 SMB PXI star trigger port
• Input mode: Per-channel independent differential or pseudodifferential software selection
• Slot occupation: Single-width 3U PXI peripheral slot, no extra chassis space occupied
• Mechanical dimension: 160 × 100 mm, bare module weight 241 g

Core Analog Input Electrical Parameters

• ADC specification: 24-bit delta-sigma architecture, integrated on-chip digital filtering
• Sampling rate range: 1 kS/s to 204.8 kS/s with 181.9 μS/s fine increments
• Six independent software gain settings: -20/-10/0/10/20/30 dB, corresponding full-scale ranges from ±42.4 Vpk down to ±0.316 Vpk
• Input impedance: 1 MΩ || 217 pF for differential mode; pseudodifferential negative terminal fixed 50 Ω to chassis ground
• Overvoltage protection: ±42.4 Vpk differential withstand; pseudodifferential negative terminal limited to ±10 Vpk

IEPE & TEDS Transducer Support

• IEPE excitation current: Per-channel software-selectable 0/4/10 mA constant current source
• IEPE compliance voltage: Minimum 24 V headroom for long-cable accelerometer deployment
• TEDS compatibility: Fully compliant with IEEE 1451.4, automatic sensor parameter reading without manual configuration
• Current noise floor: <300 pA/√Hz to avoid low-level transducer signal distortion

Noise & Distortion Performance

• Dynamic range: 118 dB typical @ 0 dB gain, 1 kS/s sampling rate
• Spectral noise density: 8 nV/√Hz @ 30 dB gain with enhanced alias rejection enabled
• SFDR: 110 dBc typical across full input amplitude range at 204.8 kS/s
• THD: -109 dBc typical @ 20 Hz-20 kHz bandwidth for balanced input signals
• Idle channel noise: 1.3 μVrms @ low sampling speed, 2.8 μVrms @ 204.8 kS/s

Filter & Coupling Specifications

• AC coupling cutoff: -3 dB at 3.4 Hz, -0.1 dB at 22.6 Hz for low-frequency DC offset removal
• Dual anti-aliasing modes: Enhanced Low-Frequency Alias Rejection (default) and standard rejection
• Passband flatness: ±0.003 dB typical within 20 Hz-20 kHz audio bandwidth
• Inter-channel phase mismatch: ≤0.015° @ 0 dB gain, ensuring multi-channel vibration phase alignment

PXI Bus & Power Consumption

• PXI compliance: PXI Rev.2.2, supports PXI_Clk10 and PXI star trigger
• DMA resource: 1 dedicated DMA channel for zero-CPU continuous streaming
• Backplane power draw: +3.3 V 1750 mA, +5 V 990 mA, +12 V 130 mA, -12 V 70 mA
• Multi-module synchronization: Up to 14 synchronized PXI-4462 modules in one chassis

Mechanical & Environmental Specifications

• Operating temperature: 0 ℃ ~ +55 ℃; Storage temperature: -40 ℃ ~ +85 ℃
• Humidity: 10%–90% non-condensing operation, 5%–95% non-condensing storage
• Safety rating: IEC 61010 Measurement Category I, Pollution Degree 2, no CAT II and above support
• EMC compliance: CE, FCC Class A industrial electromagnetic certification
• Calibration cycle: 1-year recommended external traceable calibration; onboard self-calibration for offset drift correction

Compatibility Matching List

• Compatible chassis: PXI-1031, PXI-1042, PXI-1045 all legacy 3U PXI chassis
• Compatible controllers: PXI-8186 and all NI embedded/external PXI controllers
• Matching accessories: SHC68-BNC shielded cable, TB-4462 BNC terminal breakout accessory
• Official status: Fully obsolete, only aftermarket inventory and third-party repair available

Software Compatibility

• Drivers: NI-DAQmx, NI Sound and Vibration Toolkit
• Configuration tools: NI MAX, Sound and Vibration Assistant interactive analysis tool
• Supported software: LabVIEW, LabWindows/CVI, Python PyDAQmx, C#
• Supported OS: Windows XP/7/10, Phar Lap ETS real-time operating system

Pros & Limitations

• Pros: Four-channel simultaneous sampling, industry-leading noise and distortion performance, native IEPE/TEDS support, ultra-low inter-channel phase mismatch, hardware DMA for long-duration streaming, dual anti-aliasing filters
• Limitations: No analog output channels, only CAT I low-voltage safety rating, susceptible to external EMI without shielded cabling, obsolete driver incompatibility with Windows 11