Pass-By Noise Testing
VBOX systems make it quick and easy to test a vehicle's noise emissions levels to ISO and ECE standards.
- Test to ISO 362, ECE R41, R51, R117 & R138, US EPA
- Automobile, motorcycle & electric vehicle testing
- Simple installation and testing with just one operative
- Free Pass-By Noise testing software
Pass-By Noise Testing with VBOX
VBOX Pass-By Noise testing equipment allows you to log channels such as engine RPM, vehicle velocity and maximum vehicle exterior noise to the accuracy requirements of ECE/ EPA standards and regulations. Certification of vehicle noise emissions for tyres, passenger vehicles, motorcycles and light trucks is achieved with dedicated Pass-By-Noise plugins for EPA, ECE R41, ECE R51, ECE R117 and ECE R138.
Single Person Testing
Log Simultaneous Channels
Data Analysis Software
Highly Accurate Measurements
Standard-compliant
Noise & Weather Data
Free Data Analysis Software
Our intuitive VBOX Test Suite analysis software comes with dedicated Pass-By Noise plugins that are compliant with EPA, ECE R41, ECE R51, ECE R117 and ECE R138 standards.
VBOX Test Suite allows you to enter session-specific information that defines test conditions and vehicle details, like the requirement of kerb mass, power, idle rpm and rated engine rpm when testing to R51/R41.
This information is automatically saved to the log file and so only needs to be entered once; it can also be exported for use in another file, saving setup time.
A comprehensive report can be generated at the end of the test, providing all session information and results for post-test analysis.
Please hover over the software screenshot for more information.
Live Display
Choose the channels you want to see displayed live from your vehicle or on site, in real-time.
Graph Display
A graph plotting distance against decibel levels allows you to easily compare results side by side in order to recognise trends or variances.
Test Results
Results will populate as soon as test runs are completed. The data displayed is specific to the test standard. Additional channels can be added if required. Results which do not meet the standards selected will be highlighted in pale red, with the parameter by which the run failed made clearly visible.
The software will create different tabs at the top of test results area to differentiate between test-specific runs, e.g. wide-open throttle, steady speed and ASEP runs for the R51 and R41 tests.
Report Generation
A comprehensive report can be generated at the end of the test, providing all session information and results for post-test analysis.
Image: R117 report example
Configuration
You are able to configure the software by selecting the start conditions and channel parameters.
Image: R138 setting screen example
Testing Equipment
A typical Pass-by Noise (PBN) test setup consists of a VBOX 3i 100 Hz data logger, a Laser Light Barrier Kit, a tablet or PC, a Mini Input Module, sound level meters and telemetry radios. The difference between the layouts for each regulation is that the PC or tablet can be easily installed inside the vehicle for R51, R117 and R138 testing instead of the roadside for R41 and EPA testing.
Measuring sound pressure levels
Microphones placed within the test area output to a VBOX Mini Input Module, which continuously transmits the converted sound readings via 2.4 GHz telemetry radios to the VBOX 3i GPS data logger.
Centimetre-level accuracy with VBOX 3i RTK
Instead of using a laser light barrier to trigger the start of the test, a VBOX 3i RTK can be used to set the start and finish lines when used with an RTK Base Station or NTRIP solution. This means that the test vehicle doesn’t have to come to a stop between test runs and can save valuable time.
VBOX 3i Dual Antenna for R138
The R138 regulation requires conducting the tests in the forward and reverse direction. When using a VBOX 3i Dual Antenna, the VBOX Test Suite R138 Plug-in can automatically detect the direction of travel of the vehicle and categorise the results for each prescribed test direction and speed.
Rugged motorcycle equipment case
Rugged roadside case
This case is placed near the Sound Level Meters by the roadside. It can hold the Mini Input Module, the 2.4 GHz telemetry radio and a Li-ion battery.