Data Smoothing : RC Filtering And Exponential Averaging
What are RC Filtering and Exponential Averaging and how do they differ? The answer to the second part of the question is that they are the same process! If one…
What Are dB, Noise Floor & Dynamic Range?
We are often asked what noise floor & dynamic range actually are. Most engineers are probably familiar with or have come across the decibel or dB as a unit of…
Impact Hammer Double Hit – An Investigation
An Impact Hammer double hit is viewed as a common problem, and most hammer impact testing software offers a "Double hit" rejection function. Signals captured with double impacts are not…
Understanding CAN Bus: The Nervous System of a Modern Vehicle
Understanding CAN bus (Controller Area Network Bus) is essential to modern automotive engineering. The CAN bus, and its variants, are now universal across the automotive industry and beyond. On many…
Tools for motorcycle dynamics analysis
Tools for motorcycle dynamics analysis - Prosig DATS and Structural Animation Viewer Mechanical engineering covers a vast field of topics, but not many fields feature higher dynamics in time and…
Some Basic Vibration Signal Qualities
This article discusses quantifying basic vibration signals from three aspects: signal type, signal level, and signal display format. Mathematical expressions and typical applications are also introduced. A simple harmonic vibration…
Exhaust Vibration Measurement – A Case Study
Exhaust Vibration Measurement - Customer Requirement One of Prosig's customers needed to perform exhaust vibration measurement on some of their vehicles. They contracted Prosig to take the measurements and provide reports of the…
Prosig Join Condition Monitoring Group Limited
Prosig is pleased to announce that it has become part of Condition Monitoring Group (CMG) Limited. Prosig Limited will retain its operation in Fareham, Hampshire and will continue to operate with…
The 2012 Prosig ISVR Prize Presented At University of Southampton Graduation Ceremony
Last year's Prosig ISVR Student Prize as won by Paul Clark for his project titled "A Mobility Model to Predict the Isolator Effectiveness of an Automotive Compressor". Paul graduated this…
The ISVR is 50 Years Old
The Institute of Sound & Vibration Research (ISVR) at Southampton University was formed in 1963 and is 50 years old this year. Prosig was founded by staff from the Institute…
Come and see Prosig at SAE 2013 Noise and Vibration Conference and Exhibition
If you are visiting the SAE 2013 Noise and Vibration Conference and Exhibition in Grand Rapids (May 20th - 23rd) then please come along and see us at booth 409.…
[Video] Storing FRFs, coherence & time series
James Wren (Prosig UK) explains how to store FRFs, coherence and/or time series data in modal hammer testing using Prosig's P8000 & DATS software. http://www.youtube.com/watch?v=JLumlmoRCvM
[Video] What are nodes, components & structures in modal testing
James Wren (Prosig UK) explains how nodes, components & structures are used in modal hammer testing using Prosig's P8000 & DATS software. http://www.youtube.com/watch?v=FmNCqv7p3pc
Calibrating an Accelerometer with a Prosig P5000 system
Here we look at how to calibrate an accelerometer using a Prosig P5000 system. Put the wax on the shaker top. Place the accelerometer in the axis you wish to…
[Video] Performing a Hammer Impact Test
James Wren (Prosig UK) provides a step-by-step guide to performing a Hammer Impact Test on a structure using Prosig's DATS software and P8000 data acquisition hardware. http://www.youtube.com/watch?v=YrCM3H0_NpE
[Video] Calibrating a strain gauge for use with a Prosig P8000 system
James Wren (Prosig UK) steps through how to calibrate a strain gauge for use with a Prosig P8000 system. http://www.youtube.com/watch?v=BAh9PS632Tk
What Can I Do About Spikes In My Data?
Whether you call them spikes, glitches, anomalies or data dropouts, these phenomena have been a problem to engineers ever since they started recording data. There are any number of reasons…
Come & see Prosig at Testing Expo North America 2012
Prosig will be at Automotive Testing Expo North America from today, October 23rd, until October 25th 2012. Among the hardware and software on display will be some of the latest developments to…
Understanding & Measuring Noise
There are many reasons to measure and analyze noise. It may relate to legislation or regulations that limit noise in certain environments, we could be using the noise to investigate…
Why does Auto-Zero have no effect for IEPE sensors?
The Prosig P8000 Auto-Zero function is used to remove the DC content of a signal.
For example, if you have a sine wave that is ±5 volts about 0 volts it has no DC offset. But if you have a sine wave with ±5 volt amplitude about 3 volts, then it has a 3 volt DC offset. Below is an example of these two sinewaves.
And The Winner Is…
Thank you to everyone who completed our 2012 User Survey. The results were, as always, fascinating and will be used to improve our future hardware & software products. We are…
2nd Annual Prosig / Portsmouth University Prize Awarded
The 2nd Annual Prosig Prize for Engineering at Portsmouth University has been awarded to Ashley Stehr for his project “Developing an engineering mechanism to reduce the effects of rapid rotational motion caused by the shocks inherent with high speed craft”. Ashley is in his third year studying for an MSc in Mechanical Engineering. His project was supervised by Dr Ya Huang. Ashley’s project poster is shown below (click for a larger view).
Should I use 50 Ohm or 75 Ohm cables with a Prosig P8000 system?
Using 50? or 75? cable will not have any negative effects on the P8000 at all. (Generally speaking, only large voltages will damage the P8000). The impedance of the cable can only ever effect the signal the cable is carrying. (more…)
Vibration Condition Monitoring Doesn’t Get More Mobile Than This!
Have you ever wondered if there is a vibration condition monitoring system that can be installed anywhere and then monitored from anywhere else? Even on your smartphone? Well, there is. The following…
What is the difference between Operating Deflection Shapes (ODS) and Operational Modal Analysis (OMA)?
ODS = Motion of structure vibrating naturally (for example bridge vibration) or when excited by an unknown force (for example generator vibration). Prosig’s Structural Animation software performs ODS analysis.
OMA = Modal Analysis
Prosig’s Modal Analysis software performs OMA. (more…)
