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Test.Lab: file format desciption

Hello community,


I have some questions about the LMS data format:


1st question:

Where can I download the description of the LMS Data Streaming Format version: 9 (file extension: ldsf)?


2nd question:

On which way I can import to Test.Lab 15A a ASCII-file.

What information must necessarily be present in the file.asc


Thank you for your help



Re: Test.Lab: file format desciption

Hello Kurt - 


In regards to your first question, the file description of our time data file format, LDSF, is not publicly available.  Typically users export to a known file type as needed, simply right-click on the file and use the contextual menu to select the output desired.


Importing data into Test.Lab can be accomplished in a variety of ways, from generic ASCII to Excel and industry-standard formats like Universal, ASAM-ODS, RPCIII, etc.  As detailed in our on-line help for the Desktop application, the data types that can be imported include the following:

  • Cada-X project databases (see "The Cada-X project database" on page 13)
  • Cada-X TDF databases (see "The TDF database" on page 15)
  • Cada-X TRDS files (see "TRDS files" on page 16)
  • Road Runner data or Pimento data (see "Road Runner files" on page 18)
  • Sysnoise data (see "Sysnoise databases" on page 18)
  • Universal files (on page 17)
  • SDF files (on page 18)
  • RPC III files (on page 19)
  • Matlab data (on page 19)
  • Test.Lab data
  • Virtual.Lab data
  • ASAM-ODS ATFx data (see "ASAM ATFx data" on page 21)
  • STL files (geometry) (see "STL data" on page 22)

If you need any more detailed assistance, our GTAC engineers are always ready to assist - just call 800-955-000, and in the menu system select LMS Test.Lab support.

Re: Test.Lab: file format desciption

[ Edited ]

Hello Jason,

with the LMS Test.Lab you can import ASC-files.

In the navigator you see under Data Viewing the ASC icon: [cid:image001.png@01D11C57.610B0660] But when you show the properties of the ASC-channels the information: [cid:image002.png@01D11C58.0C1E30E0] Range, sample frequency, span, X axis is incorrect.

But if the these code words (Range, sample frequency, span, X axis ) are used with the correct information, separated with TAB, in the asc-file, they will be ignored.

Therefore, I need to know how the file structure should look like, so that the data is correctly read from the asc-file. For us this is import of data is very important because we perform the data capture with another program.

This data format is not supported by LMS. Therefore we are forced to take a detour via asc-format.


Can you give me an example to get to know the correct structure of the asc-file.


Thank you very much


Accepted by topic author Berger
‎11-12-2015 01:50 AM

Re: Test.Lab: file format desciption

[ Edited ]

Attached are examples of ASCII files that import directly into Test.Lab.  If you need more detailed information, I suggest calling your local support team, or checking the documentation and FAQ's on


Good luck - 

Re: Test.Lab: file format desciption

I have an ascii data file but couldn't open it in lms lab...

Is there any  ascii to lms format converter.

My data is a simple  4 column modal data without any header or so.

hope to give me a cristal clear answer.

Re: Test.Lab: file format desciption

Good morning sepideh,


it's not so easy to import ASCII-files to LMS.

At first to have to rename to file zero.txt to zero.asc (why, I don't know).

Then you have to create a header for this zero.asc-file like this:


COLUMNWIDTH = [ 20, 20, 20, 20, 20, 20]
COLUMNOFFSET = [ 1, 1, 1, 1, 1, 1]
CHANNELNAME = ['Zeit','Zeit2','LS_links','LS_rechts','KS_links','KS_rechts']
LENGTH = [ 52221, 52221, 52221, 52221, 52221, 52221]
UNIT = ['s','s','Pa','Pa','m/s^2','m/s^2']
START = [ +0.0000000000000E+00, +0.0000000000000E+00, +0.0000000000000E+00, +0.0000000000000E+00, +0.0000000000000E+00, +0.0000000000000E+00]
DELTA = [ +1.2499760637279E-04, +1.2499760637279E-04, +1.2499760637279E-04, +1.2499760637279E-04, +1.2499760637279E-04, +1.2499760637279E-04]
# descriptive data
Application = 'VB6: ASCII_LMS.vbp'
Application component = 'Umwandlung von TXT nach ASCII-LMS'
End of measurement = '14.07.2016 10:40:11'
File close time = '14.07.2016 10:40:11'
File create time = '14.07.2016 10:40:11'
Start of measurement = '14.07.2016 10:40:11'
Version number = '1'
# descriptive data for channel
Absolute time = ['14.07.2016 10:40:11','14.07.2016 10:40:11','14.07.2016 10:40:11','14.07.2016 10:40:11','14.07.2016 10:40:11','14.07.2016 10:40:11']
Absolute time source = ['PC','PC','PC','PC','PC','PC']
Absolute time status = ['N/A','N/A','N/A','N/A','N/A','N/A']
Channel category = ['Group 1','Group 1','Group 1','Group 1','Group 1','Group 1']
Channel group = ['Static','Static','Acoustic','Acoustic','Other','Other']
Channel id = ['1','2','3','4','5','6']
Channel name = ['','','','','','']
Channel unit = ['s','s','Pa','Pa','m/s^2','m/s^2']
Number of values = ['52221','52221','52221','52221','52221',' 52221']
Physical id = ['Input1','Input2','Input3','Input4','Input5','Input6']
Point id = ['Zeit','Zeit2','LS_links','LS_rechts','KS_links','KS_rechts']
Primary id = ['Zeit','Zeit2','LS_links','LS_rechts','KS_links','KS_rechts']
Unique channel name = ['C1','C2','C3','C4','C5','C6']
Weighting = ['None','None','None','None','None','None']


Without a header LMS didn't recognize this file.


If you have any questions to this header, then you can contact me.


Best regards


Re: Test.Lab: file format desciption

 Dear Berger,


I don't know how to thank you for your help.

It works,I can't belive it.

I was so confused with this problem but your practical answer lead me.

Woman LOL


wish you the best of luck.