NI PXIe-4300 8 Channel Isolated Analog Input Module

The NI PXIe-4300 is an 8-channel isolated analog input module for high-accuracy measurements in electrically noisy environments. It delivers simultaneous sampling at up to 250 kS/s per channel with 16-bit resolution, combined with individual channel isolation to eliminate ground loops and common-mode voltage interference. The module supports three programmable filter settings (10 kHz, 100 kHz, bypass) and four gain configurations, enabling precise voltage and current measurements across industrial, automotive, and test applications requiring scalable multichannel acquisition.

– Technical Specifications

• Channels: 8 differential analog inputs with simultaneous sampling
• Sample Rate: Up to 250 kS/s per channel
• Resolution: 16-bit ADC with no missing codes guaranteed
• Input Coupling: DC
• Programmable Filters: 10 kHz, 100 kHz, bypass per channel
• Programmable Gain: Four settings available
• Measurement Ranges: 10 V (TB-4300), 300 V (TB-4300B), ±20 mA / 4–20 mA (TB-4300C)
• Channel-to-Channel Isolation: 300 Vrms CAT II continuous
• Channel-to-Earth Isolation: 3,300 Vrms, 5-second withstand
• Module Type: PXI Express 3U peripheral (96-pin DIN 41612/IEC 60603-2)
• Power Consumption: 2.0 W @ +3.3 V; 8.8 W @ +12 V
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: -40 °C to 71 °C
• Operating Humidity: 10% to 90% noncondensing
• Warm-up Time: 15 minutes recommended
• Calibration: External annually; self-calibration after installation and temperature changes

– Key Features

• Tight inter-channel synchronization with 5 ppb skew across modules
• Scales to 136 channels in a single chassis; thousands when synchronized across multiple chassis
• DC input coupling for stable, continuous measurements
• Individual channel isolation prevents ground loop interference in harsh electrical environments

– Typical Applications

• High-voltage measurement in industrial power systems
• Automotive battery and supply voltage monitoring
• Multichannel data acquisition in noise-intensive test environments
• Precision current and voltage monitoring in networked measurement systems

– Compatibility & Integration

The PXIe-4300 integrates with PXI Express chassis via standard 96-pin connector. Three terminal block options (TB-4300, TB-4300B, TB-4300C) accommodate 10 V, 300 V, and current measurement applications.