ProDAQ 6171: Isolated Precision IEPE & Voltage Input LXI Instrument

Advanced test facilities—particularly those operating large-scale cryogenic systems, propulsion test stands, and high-vibration environments—depend on data acquisition systems that can deliver accurate, repeatable measurements under electrically and mechanically harsh conditions.

The ProDAQ 6171 Isolated Precision IEPE/Voltage LXI Instrument is designed to meet these demands by combining high-speed simultaneous sampling, per-channel electrical isolation, and flexible IEPE and AC voltage input support within a compact, rack-mountable LXI platform. The result is a measurement instrument well-suited for vibration, acoustic, and dynamic signal acquisition in mission-critical test setups.

Precision Signal Acquisition Where It Matters Most

In vibration and acoustic testing, small signal distortions, grounding issues, or timing mismatches can compromise the validity of an entire test run. The ProDAQ 6171 addresses these risks directly through a fully isolated, channel-independent architecture.

Each of the instrument’s eight input channels supports IEPE sensor excitation or AC voltage input, allowing engineers to interface directly with accelerometers, microphones, and other dynamic sensors commonly used in structural and mechanical testing. Every channel is electrically isolated from the chassis and from adjacent channels, with 300 V continuous isolation, significantly reducing the impact of ground loops and electrical interference in large test installations.

To ensure accurate capture of fast-changing signals, each channel is equipped with its own 24-bit Sigma-Delta ADC, enabling true simultaneous sampling across all inputs. This architecture ensures that phase relationships and transient events are preserved—an essential requirement for vibration analysis and correlation across multiple sensors.

Key Features & Technical Highlights

Input & Sampling Performance

• 8 IEPE or AC voltage input channels, individually isolated
• Simultaneous sampling using dedicated 24-bit Sigma-Delta ADCs per channel
• Sampling rate up to 50 kS/s per channel, supporting high-frequency vibration analysis

IEPE & Voltage Measurement Flexibility

• Programmable IEPE current source from 2 mA to 16 mA
• Open- and short-circuit detection for improved sensor diagnostics
• AC voltage input ranges: ±0.1 V, ±1 V, ±10 V
• Selectable gain settings: 1, 10, 100

Signal Conditioning & Outputs

• Programmable 6-pole Butterworth filters, selectable from 1 kHz to 20 kHz
• Two buffered analog outputs per channel, enabling real-time monitoring or downstream signal routing

System Reliability & Synchronization

• Redundant power supplies for increased operational resilience
• Dual Ethernet ports for reliable network connectivity
• IEEE-1588 Precision Time Protocol (PTP) support for time-synchronized, distributed measurement systems

Designed for High-Noise, High-Demand Test Facilities

Large test environments often combine high-power electrical systems, long sensor cabling, and distributed instrumentation—all of which increase the risk of signal degradation. The ProDAQ 6171’s channel-to-channel isolation, high-resolution conversion, and integrated filtering help preserve signal integrity even in electrically noisy conditions.

The instrument’s architecture supports both real-time signal observation—via its buffered outputs—and detailed post-test analysis, enabling engineers to validate test results with confidence. By reducing susceptibility to interference and timing errors, the ProDAQ 6171 helps minimize test repetition and improves overall test efficiency.

With support for standardized LXI communication and precision time synchronization, the ProDAQ 6171 integrates seamlessly into modern test infrastructures where multiple instruments must operate as a coherent measurement system.

A Reliable Foundation for Precision Measurement

Whether deployed in vibration monitoring, acoustic testing, or dynamic signal acquisition applications, the ProDAQ 6171 provides a robust, flexible measurement platform built around accuracy, isolation, and synchronization. Its combination of high-speed sampling, per-channel IEPE support, and industrial-grade isolation makes it a dependable choice for facilities where measurement integrity is non-negotiable.

Related High-Availability, Isolated Instruments for High-Integrity Test Systems

• ProDAQ 6111 – Isolated Digital Input LXI Instrument
• ProDAQ 6118 – 16-Channel Isolated Precision Frequency Meter LXI Instrument
• ProDAQ 6131 – 32-Channel Isolated Precision RTD Input LXI Instrument
• ProDAQ 6132 – 32-Channel Isolated Precision Voltage Input LXI Instrument
• ProDAQ 6151 – 16-Channel Isolated Precision Thermocouple Input Instrument
• ProDAQ 6172 – Isolated Precision Strain Gage LXI Instrument

These modules share a common LXI architecture and IEEE-1588 timing support, enabling synchronized, distributed measurement across complex test facilities.

Learn More

To find out how the ProDAQ 6171 can support your vibration and dynamic signal measurement requirements, contact Bustec today:
👉 www.bustec.com/contact