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Display dB Reference on graph in LMS Test.Lab?

Creator
Creator

Is there a way to show the dB reference (ie, 20e-06 Pa)  in a FrontBack display in LMS Test.Lab? Right next to the term “dB” on the Y-axis would be great.

2 REPLIES

Re: Display dB Reference on graph in LMS Test.Lab?

Siemens Genius Siemens Genius
Siemens Genius

Indeed, there is a way to show the dB reference for pressure (sound) in Test.Lab displays, using the LMS Units Editor.  Below is a screen-shot showing the result in a Test.Lab display. We hope this is what you are looking for.

dbref.png

 

 

Included below are the steps on how it is done:

          1. If you are using Test.Lab 16A or 15A, launch the program LMS Configuration and Unit System 2.2 through Start -> All Programs (If you are using an older version, launch the program LMS Units Editor x.x)dbstart.png

             

             

            dBunit.png

             

             

          2.  In the Units Editor, perform a search (Ctrl+F) for the word ‘Pressure’ and check the box for “Match whole words”. This will take you to the Quantity case Pressure with Unit Case label Pa, i.e., the default one.

             

             dbfind.png

             

             

          3. Double click on that row (Pressure | Pa | Default), which will open a new window.

          4. In this window, edit the ‘Level Label’ to include the text for reference the way you would like it to be. The default one is dB<W> but you could change it to 'dB <W> ref 20E-06'.  Press OK when done.dbedit.png5. Save the new units file through 'File -> Save' then do 'File -> Exit'

 

 

Open Test.Lab project to confirm that reference value is being displayed for Pressure data in the displays.

 

Note that this units file change is done in the LMS Units Editor, so it is outside of Test.Lab. So all your displays in any project will automatically show the newly added reference value(s).

dbref.png

 

 

 

 

 

 

Re: Display dB Reference on graph in LMS Test.Lab?

Creator
Creator

Thanks!  It works on my computer.