NI PXIE-6738

Description

1. Detailed Parameter Table

NI PXIE-6738

2. Product Introduction

The NI PXIE-6738 is a high-performance, high-density analog output module designed for PXIe systems, delivering exceptional precision and synchronization for applications requiring multiple analog control signals. As part of NI’s modular instrumentation portfolio, it combines 32 channels of 16-bit analog outputs with flexible triggering and synchronization capabilities, making it ideal for complex test, measurement, and automation systems.

With 32 channels, the NI PXIE-6738 provides extensive analog output capability in a single PXIe slot, reducing chassis space requirements for multi-channel applications. Each channel offers selectable voltage ranges (±10 V, ±5 V, 0-10 V, 0-5 V) and a 1 MS/s simultaneous update rate, ensuring precise control of actuators, stimulators, and other devices. The integrated 8 digital I/O lines add versatility for auxiliary control tasks, while support for PXIe triggers enables seamless synchronization with other modules in the system. In automated test environments, the NI PXIE-6738 acts as a critical signal generation component, providing accurate, synchronized stimuli to devices under test (DUTs) across multiple channels.

3. Core Advantages and Technical Highlights

High-Density Channel Configuration: The NI PXIE-6738 packs 32 analog output channels into a single PXIe slot, maximizing channel count per chassis. This density is particularly valuable in applications like semiconductor wafer testing or multi-axis motion control, where dozens of synchronized analog signals are required, reducing system size and cost compared to using multiple lower-channel modules.

Simultaneous High-Speed Updates: With a 1 MS/s simultaneous update rate across all channels, the NI PXIE-6738 ensures precise timing alignment between signals. This is critical in applications such as radar simulation, where phase-coherent signals across multiple channels are essential, or in automotive ECU testing, where synchronized stimuli to sensors must match real-world conditions.

Precise Signal Generation: 16-bit resolution, low output noise (100 µV 峰峰值), and fast settling time (10 µs to 0.01%) make the NI PXIE-6738 suitable for high-precision applications. It can generate stable DC levels for calibration, low-distortion sine waves for audio testing, and complex arbitrary waveforms for dynamic system stimulation, ensuring accurate and repeatable results.

Flexible Synchronization: Support for PXIe trigger bus and star trigger allows the NI PXIE-6738 to synchronize with other PXIe modules (e.g., data acquisition, digital I/O) to within nanoseconds. This capability is vital in closed-loop test systems, where analog outputs must respond in real time to measured inputs, such as in adaptive control of industrial machinery.

4. Typical Application Scenarios

Semiconductor Test Systems: In semiconductor manufacturing, the NI PXIE-6738 provides analog stimuli to test multiple ICs simultaneously. It generates bias voltages, reference signals, and control voltages for wafer-level testing, with 32 channels enabling parallel testing of multiple devices to increase throughput. Its precise voltage control ensures accurate characterization of analog circuits on the chip.

Aerospace Simulation: For avionics testing, the NI PXIE-6738 simulates sensor inputs (e.g., altitude, airspeed, acceleration) to flight control systems. With synchronized outputs, it replicates real-world conditions, allowing engineers to validate the performance of navigation and control systems under various scenarios, from steady flight to extreme maneuvers.

Industrial Automation Calibration: In factory automation, the NI PXIE-6738 calibrates multi-channel instruments such as data loggers and process controllers. It generates known voltage levels across its 32 channels, verifying the accuracy of the device under test (DUT) at multiple points, reducing calibration time compared to sequential single-channel testing.

Medical Device Testing: For medical equipment like patient monitors or infusion pumps, the NI PXIE-6738 simulates physiological signals (e.g., ECG waveforms, pressure pulses). Its low noise and precise signal shaping ensure realistic simulations, enabling manufacturers to test device response to critical conditions safely and reliably.

NI PXIE-6738

5. Related Model Recommendations

PXIE-6368: A multifunction DAQ module that pairs with the NI PXIE-6738 in closed-loop test systems, measuring DUT responses to analog stimuli generated by the NI PXIE-6738.

PXIE-1085: An 18-slot PXIe chassis that houses the NI PXIE-6738 and other modules, providing high-bandwidth backplane communication for synchronized systems.

PXIE-6672T: A timing and synchronization module that enhances the NI PXIE-6738‘s capabilities in large-scale systems, distributing precise clocks and triggers across multiple modules.

SCB-68A: A shielded terminal block that connects to the NI PXIE-6738‘s VHDCI connectors, providing screw terminals for secure wiring to DUTs or actuators.

LabVIEW FPGA Module: Software that enables custom waveform generation and real-time control of the NI PXIE-6738, ideal for applications requiring specialized triggering or signal processing.

PXIE-6570: A digital I/O module that complements the NI PXIE-6738 in mixed-signal test setups, adding high-speed digital control alongside analog outputs.

PXIE-6739: A higher-current version of the NI PXIE-6738 (±50 mA per channel) for applications requiring more power, such as driving solenoids or large transducers.

6. Installation, Commissioning and Maintenance Instructions

Installation Preparation: Before installing the NI PXIE-6738, power off the PXIe chassis and ensure proper grounding. Use an anti-static wristband to prevent electrostatic damage. Verify the chassis supports PXIe Gen 2 (x1 lane) and has an available slot. Prepare shielded 68-pin VHDCI cables and compatible terminal blocks (e.g., SCB-68A) for wiring to external devices.

Commissioning Steps: Insert the NI PXIE-6738 into the PXIe chassis, securing it with front-panel screws. Connect terminal blocks via VHDCI cables. Power on the chassis and launch NI MAX to confirm detection. Install the latest NI-DAQmx drivers, then configure channels (voltage ranges, update rates) via software. Test operation by generating a DC voltage on a channel and measuring it with a precision DMM, verifying accuracy within specifications. Validate synchronization by generating simultaneous pulses across all channels and checking alignment with an oscilloscope.

Maintenance Suggestions: Inspect connectors quarterly for corrosion or bent pins, cleaning with compressed air if needed. Avoid exceeding the 100 mA total current limit to prevent overheating. Calibrate annually using NI’s calibration service or traceable standards to maintain accuracy. If output drift is observed, check for loose connections or thermal issues (ensure proper chassis cooling). Update firmware and drivers regularly via NI Update Service to access performance improvements.

7. Service and Guarantee Commitment

NI backs the NI PXIE-6738 with a 3-year standard warranty, covering defects in materials and workmanship. During this period, NI will repair or replace faulty modules at no cost, minimizing downtime for critical test systems.

The company’s global technical support team provides expert assistance for installation, synchronization, and troubleshooting via online resources, email, and phone. NI offers comprehensive documentation, including application notes and example code, to accelerate system integration. For calibration needs, NI provides ISO 17025-accredited services to ensure traceability to international standards. This commitment to quality ensures users can rely on the NI PXIE-6738 for consistent, high-performance analog signal generation in demanding applications.