NI PXIe-4463 DSA Analog Output with Mini-XLR Connector

The NI PXIe-4463 is a PXI Express Dynamic Signal Acquisition analog output module delivering high-performance signal generation for audio, acoustic, and vibration measurement systems. It provides two 24-bit DAC channels operating at up to 51.2 kS/s with an oversampled rate of 520.833 kS/s, supporting both differential and pseudodifferential output configurations via Mini-XLR connectors. The module integrates dual timing engines for independent channel control and multisample-rate applications, coupled with an integrated reference clock source.

– Technical Specifications

• Analog Output Channels: 2
• DAC Resolution: 24 bits
• Maximum Sample Rate: 51.2 kS/s (frequency range: 100 S/s to 51.2 kS/s)
• Oversampled Rate: 520.833 kS/s
• FIFO Buffer: 1,023 samples
• Sampling Resolution: ≤45.5 µS/s
• Measurement Bandwidth: 20 Hz to 22.4 kHz with bandwidth-limiting filter
• High-Pass Filter Cutoff: 3.4 Hz
• Gain Settings: 3 (±0.03 dB internal mismatch; 0.1 dB amplitude accuracy over full operating temperature; ±110 ppm/°C drift stability)
• DC Coupling: Supported
• Output Modes: Differential; pseudodifferential (software-selectable with -31.8 mdB software-corrected gain, or external chassis ground connection with -34.8 mdB gain change)

– Key Features

• Dual 24-bit DACs for simultaneous fully differential generation
• Two independent timing engines enabling multisample-rate and independent channel start/stop control
• Integrated reference clock eliminates external synchronization requirements
• Mini-XLR (Part 783086-02) connector configuration with SMB auxiliary connector
• Low THD+N and high dynamic range for precision applications
• Operating temperature: 0 °C to 55 °C; relative humidity: 10% to 90% noncondensing

– Typical Applications

• Audio and acoustic signal synthesis
• Vibration test stimulation
• Transducer excitation and signal conditioning
• Multi-channel dynamic signal generation

– Compatibility & Integration

Requires PXI Express chassis with controller or MXI-Express. NI-DAQmx 14.5 or later provides driver support. Optional LabVIEW integration. Shielded cables should not exceed 3 m. Chassis ground connection to input device ground recommended for improved common-mode noise rejection. Module dimensions: 6.3 × 3.9 inches; weight: approximately 525 grams.