Any tutorials for analysis, acquisition, PROTOR etc

## [Video] A simple CAN-bus measurement setup

A simple tutorial that explains how to use the DATS Acquisition software to set up a Prosig P8000 to capture data from a CAN-bus. http://www.youtube.com/watch?v=XeAuntGW-O4

## How do I balance a shaft?

“How do I balance a shaft?” seems like a fairly straightforward question, but there are a number of things that we need to understand first. Here we look at a number of key concepts that need to be understood in order perform balancing.

### What does balance mean?

Well broadly speaking to balance a shaft, mass must be added or removed at certain angles. The concept being that the centre of gravity and rotational centre of the shaft will be equal when the shaft is balanced. (more…)

## What is primary and secondary ride?

In automotive NVH circles, ride behaviour is often referred to as primary and secondary ride, but what do these terms really mean. (more…)

## How Do I Get An XYZ Resultant Waterfall

A user has three signals captured using a triaxial accelerometer and asked “What is the simplest way to get the XYZ resultant from run-up file?” He had tried forming a resultant of the raw time histories, but didn’t fully understand the resultant time history.

Of course, the correct way of processing the data is to calculate the individual waterfalls from the x, y & z data and then calculate a resultant waterfall. (more…)

## What is Source Contribution Analysis (or SCA)?

How do you measure the causes of a noise or vibration with respect to several sources? Which source is causing what part of the response?

For example, how does the noise inside the cabin of a vehicle relate to the engine noise or wheel hub noise and vibration? (more…)

## 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…)

## How do I plot two curves with two different axes

[su_quote]I was hoping you can give me some way that I can create a plot with two different vertical (Y axis) scaling. I want to plot Principle stress and applied load vs. time on the same plot.

I want to show the principle stress increments on the left side of the graph and the load scale on the right side of the graph. I can do this with some other programs but cannot find a way to do it in DATS for Windows.

Is this POSSIBLE?[/su_quote] (more…)

## [Video] Creating order & waterfall plots

A step-by-step introduction to creating order and waterfall plots from a time history and a tacho signal. http://www.youtube.com/watch?v=KpO4RLu6Onc

## What is the difference between Transfer Path Analysis (TPA) and Source Contribution Analysis (SCA)?

Transfer Path Analysis (TPA) provides the route of the noise or vibration through the structure, not just which sources cause the response, but the route taken. This is useful for developing and improving components like engine anti-vibration mountings or suspension anti-vibration mountings. (more…)

## Using global variables, variable arithmetic & script fragments

One of Prosig’s engineers was recently creating a complex worksheet application that required some complicated arithmetic to be performed on values calculated in the worksheet. Worksheet (or global) variables are ideal for this. The Variable Mods DPU also has an expression evaluator built in. Consider the following worksheet that takes a Named Element from two signals and sums them. (more…)

## Automatic Tacho Processing Using A Prosig P8000

The digital tacho channel in a P8000 system offers better time resolution by dividing the main sample period by 16. However it is sometimes difficult to know what level the threshold should be set to so a facility to help you find the optimum level has now been added to the acquisition software. (more…)

## [Video] Setting up a P8000 system to capture CAN-bus data

The P8012, P8020 & P8048 can all be fitted with the 8440 CAN-bus/GPS card. Setting up the P8000 to capture CAN-bus data is extremely simple. In the following video, James…

## A Simple Step-by-step Guide To Bearing Vibration Analysis

Generally. when developing and testing bearings a simple step by step procedure should be followed.

## How Do I Get Articulation Index (AI) vs. Speed?

Use the following sequence to get the Articulation Index (AI) vs rotational speed: Perform waterfall analysis on your noise signal (+ tacho). This gives you a standard waterfall display On…

## Understanding the P8000 Auto-Zero Function

The Prosig P8000 Auto-Zero function is a powerful tool and it is well worth spending some time understanding it. (more…)

## Finding The Analysis That You Need

I’m sure many users will have been in this situation. You need an analysis function, you know it’s in DATS, but you can’t remember where. One of the major strengths of the DATS package is the depth of analysis functions it provides. Unfortunately, when you have a deadline and can’t find the function that you want that isn’t much help. But assistance is at hand… (more…)

## Using Named Elements & Global Variables In Worksheets (Part 1)

This article is the first in a series that will introduce two very important facilities that can be used when creating DATS worksheets – Named Elements and Global Variables. It is perfectly possible to perform simple measurement and analysis with DATS without knowingly using either of them. However, knowing how they work and what they can do, will lead to much more efficient and flexible worksheets. The first subject we’ll look at is Named Elements. (more…)

## [Video] Displaying 3-D views using a linear, log & dB scale

James Wren explains how to view 3-D visualizations using linear, logarithmic & dB scales. http://www.youtube.com/watch?v=mnfchJCO8-4

## [Video] How To Transpose 3-D Graphs

James Wren explains how 3-D graphs can be transposed using Prosig's DATS software. http://www.youtube.com/watch?v=FtUOThwuu1I

## [Video] How To Calibrate Microphones & Accelerometers

Here are two videos on a relatively simple, but sometimes misunderstood procedure – how to calibrate microphones & accelerometers (more…)

## [Video] How To Analyze Noise & Vibration From Rotating Machines

This is complete version of the video illustrating my recent article How To Measure Noise & Vibration In Rotating Machines. This video was previously published on the blog in 3 parts.…

## [Video] A Simple Capture, Analysis and Report (Part 4)

http://www.youtube.com/watch?v=vZCKb4ikX1s This is the final part of our four part tutorial. This adds a report to the worksheet we developed in part 3.

## [Video] A Simple Capture, Analysis and Report (Part 3)

http://www.youtube.com/watch?v=gvwwfCampas Today we have the third of our four part tutorial. Here we show how to quickly build a worksheet to analyze the data we captured in parts one and…