VAS Noise, Vibration and Harshness - NVH Kit
Garage Lube has been appointed as your authorised distributor of the VAS Noise, Vibration and Harshness (NVH) Diagnostics Kit to VAG in South Africa. A new, comprehensive NVH Training Course is now available in South Africa.
Volkswagen, Porsche, Audi, Scania, Lamborghini, MAN and all other VAG dealers and workshops are now able to purchase this outstanding tool manufactured by Pico Technology, from us.
Please look at the VW News Letter: Vibration and noise analysis system VAS 611 015 (pdf) which introduces the system.
If you are not affiliated to VAG, please visit our PicoScope NVH Page for the standard Pico Technology NVH kits.
Garage Lube will provide full support and training in South Africa, in conjunction with Pico Technology in the United Kingdom - more details below.
The VAS 611 015 NVH kit contains:
- 1x 4-channel, VAS-branded 4425 Automotive Diagnostic PicoScope - See our:
- 4x 3-axis accelerometers
- 4x accelerometer magnets
- 4x microphones;
- 4x 4-output interfaces for the:
- microphones (the Y output); and/or
- 3-axis accelerometers (the three XYZ outputs or the SUM output)
- 4x Extension Cables
- 1x VAS-branded carry case
All items are also available separately.
Pricing is determined in accordance with directives from VAG and is available to VAG dealers and workshops on request.
VAS NVH Differences
The VAS Interface has an extra output (compared to the Pico NVH Interface) which is thesum of the three accelerometer outputs. This output merely adds the magnitude of the three voltages from the three accelerometers together but it disregards the direction. It provides a useful, quick check and also allows you to monitor up to 4, 3-axis accelerometers simultaneously. The software will use the more accurate sum if you connect all three axis outputs of one interface to the scope.
Use the system with your existing tools and all that is required is a notebook running the PicoScope software. Pico NVH software includes the powerful PicoScope 6, diagnostic oscilloscope interface and the entire Pico Diagnostic Suite. Free software updates are available for the life of the product.
The VAS Noise, Vibration and Harshness (NVH) system is manufactured by Pico Technologies and enables the identification and diagnosis of unwanted vibration and noise sources in in a vehicle.
Forum and Case Studies
- NVH Forum
- Tyre Vibration VW Golf 2004
- A MK5 VW Golf 2.0 TDI with a distinct vibration throughout the cabin at a very specific road speed range of 67- 73 mph, presented a real nuisance at cruising speed. This problem resulted in the customer driving at 65 or 75 mph to avoid the vibration.
- NVH Cabin Vibration Maserati Quattroporte 2010
- The trouble with vibrations is that we all interpret them differently (which is why we should measure and not guess), but with this vehicle you could not deny a considerable vibration throughout the vehicle in a very specific engine speed range. Starting at 1450 rpm through to 1700 rpm the vibration was evident, with peak vibration occurring around 1600 rpm.
- Finding faulty engine mountings Rover 100 1996
- My 1996 Rover 100 helped me get to grips with NVH. The first test I did was in the passenger compartment with the accelerometer on the inner seat rail. I was a bit surprised by the magnitude of the engine second-order (E2) peak, but, with no experience to fall back on, I asked Steve Smith at Pico for advice.
- NVH diagnosis of transmission screech Opel Kadett 1991
- The vehicle had developed a very loud screeching noise, which sounded like a cross between a squealing drive belt and a loose stack of rapidly vibrating metallic plates. The car was powered by the original GM 16SV OHC transverse-mounted petrol engine and the THM125 automatic transmission and had covered a genuine 52k miles from new.
The VAS PicoScope NVH Kit from Pico Technology is the cost-effective answer to the many NVH problems facing VAG technicians today. Hardware combined with the PicoDiagnostic Software provides real-time diagnosis to the technician, as a bar graph, frequency chart, 3D frequency chart, RPM order, road speed or a time domain view. There are many ways to filter, isolate and manipulate the display to highlight the problem.
Start recording before a road test and playback and analyze the recording back in the shop. This ensures that the driver's attention remains on the road. Saving the recordings couldn’t be easier: Much like our other automotive software, you can simply save the file to your laptop’s hard drive.
The VAS PicoScope NVH Kit makes use of the powerful, 4-channel VAS-branded PicoScope 4425 automotive oscilloscope. You can be sure that your investment in the PicoDiagnostics NVH kit will benefit your business without the need for further spending.
DocumentsVibration and noise analysis system VAS 611 015 (pdf)
NVH Diagnostics Quick Start Guide (pdf)
NVH Diagnostics Data Sheet (pdf)
Eradicate NVH Issues (pdf)
Please note that part numbers in some of these documents have been changed as kits have been updated. Also, some documents refer to the PicoScope kits, not the VAS kit. Find the correct kit and item part numbers on right of this page.
Customer complaints surrounding noise and vibration are subjective at best and present technicians with a challenge before diagnosis and rectification begins. Applying the NVH kit to the vehicle will allow the technician to road-test the vehicle with the customer to obtain all vibration and noise levels.
Once this valuable data has been collected it can be analyzed and compared to previous captures or against donor vehicles. Often what is perceived by the customer to be a “problem” vibration is in fact a characteristic.
Now you can present and compare objective data with test results from donor vehicles to reassure your customer all is OK. Alternatively, comparing data may highlight a problem within the vehicle allowing the technician to proceed to a repair with confidence supported by measurements taken.
Below are just a few of the typical scenarios where the NVH kit can save time and money:
- Cabin vibrations at speed
- Engine vibrations throughout the entire RPM range
- Clutch judder or vibration
- Transmission and bearing whine
- Auxiliary drive noise
- Brake judder
- Steering vibrations
The root of all NVH problems is a vibration. In some cases these are unwanted or unexpected vibrations, and in other cases they are always present (e.g. engine combustion), but should not be transmitted to the driver/passenger.
Sound is simply a vibration that is transmitted through the air (or other medium), and is heard when it reaches a person's ear. Although the perfect hearing range is 20 Hz to 20 kHz, most of us are more like 100 Hz to 15 kHz at best. Vibrations are usually felt at frequencies below 200 Hz, and in the overlapping frequency range vibrations can be both felt and heard.
In order to deal with this frequency range effectively, the VAS NVH kit contains both microphones (for sound), and accelerometers (for vibrations).
Traditionally, NVH problems have been viewed as difficult to solve. NVH complaints can be subjective as people have different levels of NVH acceptance or feeling. For technicians to tackle these issues effectively they need the right tools and procedures to diagnose complaints in an objective, repeatable and easy manner. Our VAS NVH kit does that and also generates customer reports to show that an improvement has been made against their complaint.
Setup Wizard and Software Help
The VAS NVH software has a set of wizards to guide you through setting up the necessary connections and capturing information about the vehicle. Then the system acquires information and displays results in a number of formats that assist the technician to understand the problem.
Vibrations (and sounds) that change (wheel, engine, propshaft etc.) and also fixed frequency vibrations (e.g. electric cooling fan) are detected.
Comprehensive help files explain likely causes and solutions, and the functions provided by the software make it easy to diagnose the problems in a logical way to reveal the root cause. The same system will also give you the ability to measure the effectiveness of any repairs or modifications and demonstrate the results to the customer.
|Weight (interface / vibration sensor / microphone)||120 g / 80 g / 20 g|
Sensor interface (inc. BNCs)
Magnet (inc. fitted grub screw)
105 mm x 65 mm x 27 mm
43 mm x ø17 mm
12 mm x ø18 mm
|Sensor extension lead length||3 m|
|Battery (lithium primary cell)||CR123(A) 3 V (user-replaceable)|
|Battery life (shelf / vibration mode / microphone mode)||10 years / 6 months / 2 months|
|Maximum measurable acceleration||±5 g|
|Vibration frequency range (3 dB)||DC to 350 Hz|
|Shock survivability (accelerometer head)||10,000 g|
|Operating temperature range (accelerometer head)||–40 °C to 85 °C|
|Thread mounting (accelerometer)||¼” x 28 UNF|
|Microphone sensitivity||45 mV/Pa nominal at 1 kHz|
|EMC approvals||CE: Meets EN61326-1:2006|
Garage Lube now offers a comprehensive training course that introduces you to NVH and teaches you how to use the kit. The course contains:
- Introduction to NVH
- The theory of Vibrations and Sound
- Introduction to Propshaft Balancing (on the vehicle)
- Using a J2534 Mongoose (or similar OBD tool) to connect to the vehicle
- Explaination of E1, P1, T1 and other vibration orders
- Applying the PicoScope NVH (T1 and T2 vibrations)
- Using balancing software
- Pratical Demonstrations
- Advanced NVH Features
- Where to get Help
The full course takes about eight hours in total and consists of two, four-hour sessions spread over two days.
We can certainly train you on a one-to-one basis but between four and ten trainees is preferred as interaction between and questions from the group benefit everyone.
Garage Lube offers first-line, support to our VAG clients and most concerns can be addressed by us. We can help you with product use and features but please note that our support does not extend to diagnosing problems on customer vehicles.
Please contact us by email with your support questions.
We can also call on Pico for assistance whenever necessary. In the unlikely event of a hardware failure, we can assist you by returning the goods for repair or replacement to Pico (subject to their terms and procedures).
|VAS PicoScope NVH Kit||POA|
|ASE||ASE 611 015 80 000||VAS||VAS 611 015||SKU||VAG-KP281|
|Carry Case: PicoScope with 4 NVH (VAS branded)||POA|
|ASE||ASE 611 016 80 L00||VAS||VAS 611 015/12||SKU||VAG-PA161|
|VAG PicoScope PS4425-30 (VAS branded)||POA|
|ASE||ASE 611 016 80 A00||VAS||VAS 611 015/1||SKU||VAG-PR278|
|4 Output NVH interface||POA|
|ASE||ASE 611 016 80 E00||VAS||VAS 611 015/5||SKU||VAG-TA418|
|ASE||ASE 611 016 80 B00||VAS||VAS 611 015/2||SKU||VAG-TA144|
|Sensor Extension Cable for NVH adaptor||POA|
|ASE||ASE 611 016 80 D00||VAS||VAS 611 015/4||SKU||VAG-TA145|
|Microphone: standard Pico||POA|
|ASE||ASE 611 016 80 C00||VAS||VAS 611 015/3||SKU||VAG-TA144|
|Mounting magnet for accelerometer||POA|
|ASE||ASE 611 016 80 B0A||VAS||VAS 611 015/2-1||SKU||VAG-TA096|
|Cable: USB 3.0 blue 1.8m||POA|
|ASE||ASE 611 016 80 J00||VAS||VAS 611 015/10||SKU||VAG-TA155|