## What Is Amplitude Quantization Error?

Amplitude Quantization Error - Summary This article explains what amplitude quantization error is and what can be done to avoid it. Typically quantization error is caused during acquisition of data.…

## Creating An End of Line Vibration Test System

Prosig was contracted by Imperial Electric in Akron, Ohio to integrate a system for end of line vibration test for electric motors they manufacture. The requirement was to qualify motors under…

## A Guide To Resonance

Our articles on how to measure resonance and natural frequency are always amongst our most popular posts. This isn't surprising considering what an important concept this is to the measurement…

## Three Methods For Analyzing Vibration In Rotating Components

In this post we will first look at how to process data from rotating machinery. Then we will focus on shaft or gear train twist. Let's look at 3 different…

## What Sample Rate Do I Use To Measure Whole Body Vibration?

What sample rate should I use if I am measuring whole body vibration? Strict ISO8041 compliance imposes a minimum sample rate of 900 samples per second. This ensures the amplitude…

## Relative signal levels of a sinusoid with and without background noise

In the process of looking at some order data, a question about the accuracy of the measurement of the signal level of discrete frequency signals which were close to the general noise level.  To answer this question, a small DATS worksheet was created which generated 2 signals.  The first signal was a 35 Hz sinusoid which, by itself the spectrum level was measured to be approximately -9 dB (ref 1 V) as seen in Figure 1.

## What sensors are required to perform a Rotor Runout Measurement?

The DATS Rotor Runout Measurement package can be used on any shaft where the following probes are available... A LVDT (Linear Variable Differential Transformer) probe. This is basically a contact…

## [Video] Using reference cursors to measure data

A tutorial by James Wren (Prosig UK) on how to use the reference cursors in the DATS software to precisely measure features in your data. http://www.youtube.com/watch?v=PSnldTfaQIE

## [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

## [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…)

## [Video] Brake Runout & DTV Measurement

https://www.youtube.com/watch?v=v32IhaUVGpM

## [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…

## Measuring Torsional Vibration 101

Are you interested in measuring torsional vibration? Need to measure shaft twist? Worried about rotational jitter? Don't worry, we've got it covered. Here we have gathered together our most popular…

## What is the difference between microphone types?

I’m often asked what is the difference between free field microphones, diffuse field microphones and pressure microphones.

For a run-of-the-mill ½ inch microphone the short answer is nothing.

However the long answer is a bit more involved.

Basically if the frequency range is below 16 kHz and an accuracy of ±2dB is acceptable then there is no real difference between the types.

So what is the difference between these types of microphone?