lang="en-US"UTF-8 Prosig Support Blog - Page 3 of 11 - The place to come for support for Prosig's DATS, P8000 & PROTOR products class="home blog paged custom-background paged-3 custom-background-image group-blog blogolife-3_0_7 unknown"

Prosig Support Blog

The place to come for support for Prosig's DATS, P8000 & PROTOR products

Prosig Support Blog
3496class="post-3496 post type-post status-publish format-standard hentry category-p8000 tag-data-acquisition tag-distortion tag-earth tag-ground tag-noise tag-p8000"

When should I use the ground connection on my P8000 data acquisition system?

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The ground connection should be used if an issue has been observed in measured data, such as significant electricity supply (50Hz or 60Hz) distortion or significant noise.

It must be attached it to a very good earth point (like a steel pipe or foundation)

It should be noted that sometimes connecting the ground cable to earth can actually make matters worse. It depends on the situation.

James WrenAdd a Comment3447class="post-3447 post type-post status-publish format-standard hentry category-signal-processing category-tutorial tag-acoustic tag-acoustics tag-asd tag-auto-spectrum tag-frequency tag-noise tag-power-spectrum tag-psd tag-signal-processing tag-vibration"

What engineering decisions are made by measuring a power spectrum?

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By power spectrum we are talking about an ASD (Auto Spectral Density) or PSD (Power Spectral Density). In fact PSD is often used when really ASD would be more correct.

Taking any signal and performing a frequency analysis using an ASD or a PSD will give the energy over a range of frequencies. Continue reading What engineering decisions are made by measuring a power spectrum?

James Wren2 Comments3460class="post-3460 post type-post status-publish format-standard hentry category-signal-processing category-tutorial"

What Is A Load Spectrum?

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When engineers talk about the ‘Load Spectrum’ what do they mean?

There is no simple answer, simple terms like load and spectrum can be used in different situations and therefore to mean different things. However the most common definition of load spectrum is as follows… Continue reading What Is A Load Spectrum?

James WrenAdd a Comment3462class="post-3462 post type-post status-publish format-standard hentry category-signal-processing category-tutorial tag-accelerometer tag-conversion tag-convert tag-db tag-decibels tag-linear tag-log tag-microphone tag-power-spectrum"

How Do I Convert To Decibels?

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Much confusion revolves around linear and non-linear numbers. The following outlines the mathematical process to convert from a number expressed in dB to a linear quantity. How do we convert to decibels and back again? Continue reading How Do I Convert To Decibels?

James WrenAdd a Comment3440class="post-3440 post type-post status-publish format-standard hentry category-dats category-signal-processing category-tutorial tag-asd tag-auto-rms tag-auto-spectrum tag-dsp tag-ensemble-maximum tag-limit-hold tag-noise tag-periodogram tag-signal-processing tag-vibration"

What is Auto Spectral Density?

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The Auto Spectral Density or Auto RMS spectrum analyses uses Fourier Transforms to process optionally overlapped sections of the input data. The result of each Fourier analysed section is called a periodogram. We then process all the resulting periodograms to produce a spectral result. Continue reading What is Auto Spectral Density?

Dr Mike DoneganAdd a Comment3427class="post-3427 post type-post status-publish format-video hentry category-dats category-tutorial category-video tag-channels tag-csv tag-data tag-dats tag-db tag-excel tag-export tag-logarithmic tag-noise tag-signal tag-vibration post_format-post-format-video"

[Video] Exporting DATS datasets in non-linear format

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To complement our recent post on Exporting DATS datasets in non-linear format here is James Wren demonstrating the method.

James WrenAdd a Comment3417class="post-3417 post type-post status-publish format-standard hentry category-dats category-tutorial tag-channels tag-csv tag-data tag-dats tag-db tag-export tag-linear tag-non-linear tag-signals tag-tutorial"

Exporting DATS datasets in non-linear format

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The following tutorial shows in detail how to use Prosig DATS to export data in a non-linear format.

DATS stores all data in linear format. When you export data you are exporting the raw stored data. Therefore, to export data in a non-linear fashion we must convert the data to non-linear scale (dB for our example) and then export to the desired format, in this case CSV. Continue reading Exporting DATS datasets in non-linear format

James WrenAdd a Comment3412class="post-3412 post type-post status-publish format-standard hentry category-dats category-news tag-dats tag-p8000 tag-software tag-windows tag-windows-7 tag-windows-8 tag-windows-xp"

The end for Windows XP. Are you ready?

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Microsoft has recently announced that security updates and patches for its Windows XP operating system will end from 08 April 2014.

http://www.microsoft.com/en-gb/windows/enterprise/endofsupport.aspx

Many organisations are now having to update older PCs and laptops to Windows 7 or Windows 8. Continue reading The end for Windows XP. Are you ready?

James WrenAdd a Comment3372class="post-3372 post type-post status-publish format-standard hentry category-protor-tutorial tag-eddy-probe tag-electrical-runout tag-lvdt tag-mechanical-runout tag-runout tag-runout-measurement"

Rotor Runout Measurement

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Prosig’s DATS Software includes an optional add-on package for rotor runout measurement. Runout may consist of two components – Mechanical Runout and Electrical Runout. You can read more about runout on prosig.com here – Rotor Runout Measurement.

We are often asked exactly what analysis and information is included  The purpose of this post is to show some of the screens and reports from the Rotor Runout Measurement package. So here goes… Continue reading Rotor Runout Measurement

Chris MasonAdd a Comment3397class="post-3397 post type-post status-publish format-standard hentry category-dats category-signal-processing category-tutorial tag-alias tag-anti-alias tag-anti-aliasing tag-iso2631 tag-iso8041 tag-measurement tag-sample-rate tag-vibration tag-whole-body"

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

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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 and phase characteristics of the applied weightings meet the required criteria. To take account of the anti alias hardware filter we would recommend 1200 samples/second. If non-strict compliance is used the minimum sample rate is 300 samples/second.

ISO2631-1 recommends a minimum data duration of 227 seconds. However, for greater reliability, 600 seconds is now considered essential. That is, a 600 second or longer signal will be more representative and will provide better quality results.

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