OpenTest v2.1.0 Beta Released: Enhanced Trigger Control and Analysis Capabilities

OpenTest v2.1.0 Beta is now available as the August release. This update adds sensor database management, math-based virtual channels, Zoom FFT, stepped level sweep, trigger-controlled measurement, synchronized measurement across multiple modules, extended post-processing, and enhanced cursor tools to improve acoustic, NVH, and electroacoustic testing workflows.

In acoustic, NVH, and electroacoustic testing, engineers often work with multiple channels, different types of sensors, complex signal analysis, and repeated measurements. Test software must do more than acquire signals. It should also make test parameters easier to configure, analysis results easier to review, and measurement workflows easier to adapt to different testing requirements.

OpenTest v2.1.0 Beta focuses on these day-to-day workflows. From sensor and channel configuration to real-time data display, signal generation, measurement analysis, and sequence execution, the update further improves the flexibility and usability of the testing process.

Setup: More Flexible Sensor and Channel Configuration

OpenTest v2.1.0 Beta adds sensor database management to channel settings. Engineers can manage sensor information in a centralized database and quickly switch between sensors during testing, reducing repeated data entry and manual parameter adjustments.

Sensor sensitivity calibration has also been improved. Engineers can configure filtering during calibration and enter the amplitude of the calibration signal. The system also adds calibration signal stability detection to help identify incorrect or unstable calibration signals before calibration is completed.

Figure 1: OpenTest channel setup with expanded sensor database management

Math Channels: Creating New Measurement Signals with Mathematical Calculations

OpenTest v2.1.0 Beta adds math-based virtual channels. Engineers can perform synchronized mathematical combination calculations on acquired raw signals and generate the results as new virtual channels for subsequent measurement and analysis.

When configuring a formula, users can reference input channels in the current project as well as previously created virtual channels. The same channel can also be used multiple times in a formula. Virtual channels support basic mathematical calculations, calculus operations, and basic signal and measurement functions, making it easier to build calculation channels that match specific test requirements within the same project.

Figure 2: OpenTest Math channels for synchronized mathematical calculations on acquired signals

Monitor: Improved Data Interaction and Expanded Analysis Items

OpenTest v2.1.0 Beta improves the interaction design of the Data Selector in real-time analysis. Users can customize the displayed content according to their test requirements and flexibly select the waveforms, spectra, and scalar results they want to review.

The real-time analysis items have also been expanded with peak-to-peak value and crest factor. Peak-to-peak value represents the amplitude range between the positive and negative peaks of a signal, while crest factor describes the ratio between the signal peak value and its RMS value. These additional indicators help engineers evaluate vibration, noise, and electrical signals from the perspectives of amplitude variation and peak characteristics.

Figure 3: Expanded monitor items in OpenTest

Signal Generator: Independent Multi-Channel Settings and Real-Time Preview

OpenTest v2.1.0 Beta further expands the Signal Generator. Different output channels can be configured with different signal types and signal parameters, supporting test scenarios in which multiple channels output different excitation signals at the same time.

Signal settings can be previewed in real time, allowing engineers to observe signal changes while adjusting parameters. When parameters are modified during signal generation, the system can apply the change at the zero crossing to avoid sudden signal jumps.

The signal output can also be configured to fade to zero when it is stopped. This provides a smoother transition for acoustic and vibration testing scenarios where signal continuity is important.

Figure 4: OpenTest Signal Generator with independent multi-channel settings and real-time preview

Recording: Real-Time Listening During Recording and Playback

For abnormal sound, product noise, and sound quality testing, engineers often need to listen directly to the acquired sound in addition to reviewing waveforms and spectra.

OpenTest v2.1.0 Beta adds real-time listening to the recording function. Users can monitor the acquired sound during recording and listen to the recording again during playback. This makes it easier to review the actual listening impression together with the waveform, spectrum, and other analysis results.

Measure Mode: Expanded Trigger Control, Algorithms, and Result Processing

In Measurement Mode, OpenTest v2.1.0 Beta supports trigger signals to control when a measurement starts and stops. Engineers can define the measurement timing according to the operating condition of the test object or an external signal. This is useful for transient signals, periodically operating equipment, and tests that need to be synchronized with external events.

Zoom FFT has been added to FFT analysis. By focusing on a selected frequency range, engineers can examine peaks, harmonics, and other spectral changes in the target band in greater detail.

Stepped Level Sweep has also been added to sweep analysis. It can execute measurements at different amplitude levels to evaluate how a product responds to different excitation levels.

Figure 5: Zoom FFT and trigger control in OpenTest Measurement Mode

Limit & Judgment: Using Limit Curves to Support Result Evaluation

OpenTest v2.1.0 Beta adds limit curve settings. Users can configure upper limits, lower limits, or target ranges according to test requirements, and view the relationship between the measured result and the configured range.

By combining measurement results with predefined limit curves, engineers can evaluate results more conveniently, identify abnormal changes, and review test data with less manual comparison. This helps improve the consistency and efficiency of result evaluation.

Figure 6: Limit curves and result judgment in OpenTest

Synchronized Measurement: Completing Multiple Analyses in One Test

OpenTest v2.1.0 Beta supports synchronized measurement across FFT, Octave, Sound Level Meter, and Sound Quality modules. Engineers can select multiple measurement modules according to the test task and complete the corresponding data acquisition and analysis during the same test, reducing the need to repeat the measurement separately for each module.

After the test is completed, users can open the corresponding modules to review their individual results and compare different analysis outputs for the same test object. For example, in fan, motor, or complete-system noise testing, engineers can review the FFT spectrum, octave results, sound level indicators, and sound quality parameters separately after the measurement.

Data Processing: Extended Post-Processing Capabilities

OpenTest v2.1.0 Beta expands the available post-processing algorithms with arithmetic calculations, zeroing and inversion processing, and linear and logarithmic conversions.

Engineers can further process existing results after a measurement is completed to meet different data analysis and result presentation requirements.

Sequence Mode: Optimized Multi-Thread, Multi-Product Group Testing, and Test Debugging

In Sequence Mode, OpenTest v2.1.0 Beta further optimizes multi-thread and multi-product group measurements. For scenarios that require multiple products or groups of test tasks to be measured, engineers can configure the test threads and product groups according to the actual workflow, making test organization more flexible.

Sequence Mode also expands support for custom views. Users can organize the display of test results according to their needs, making the data that requires attention easier to identify during test execution.

The test process now supports pausing and single-step execution. During sequence debugging or validation, engineers can pause the sequence and execute subsequent steps one by one, making it easier to locate problems related to workflow configuration, parameter settings, or test results.

The sequence step pool has also been expanded with Bluetooth button test steps and position detection steps.

Figure 7: Custom view display in OpenTest Sequence Mode

Cursors: Extended Tools for Spectrum and Curve Analysis

OpenTest v2.1.0 Beta expands the cursor functions with selected-area energy calculation, cursor markers, and harmonic cursors.

Selected-area energy calculation helps engineers evaluate the energy distribution within a specified frequency range. Cursor markers can be used to record important frequency positions, while harmonic cursors display data at harmonic frequencies based on a selected fundamental frequency.

These functions are useful for spectrum peak analysis, harmonic observation, frequency-band energy comparison, and result review across different test records.

Figure 8: Fixed cursor functions in OpenTest

Getting Started with OpenTest

OpenTest v2.1.0 Beta is now available. Download the client from the OpenTest website and try it for free.

If you are already using OpenTest, this update provides more flexibility for sensor configuration, real-time analysis, signal generation, and measurement workflows.

If you are evaluating acoustic and vibration test software, explore how OpenTest can help engineering teams manage the complete process from channel configuration, signal acquisition, and analysis to result evaluation and test sequence execution.

To learn more, upgrade your plan, or further explore OpenTest, please fill out the Get in Touch form below.