Natural Science Forum / Physics / Acoustics / January 2008

Tom,

I haven't used LD equipment in a long time, and I've never used the
2900.  However, have you tried their DNA software?  Link:

http://www.larsondavis.com/softwareproducts/dnasoftwaresupport.htm

I couldn't tell whether the software download (ZIP file) was freeware
or not.  It looks like it is.  And the manual indicates that it
supposedly works with the 2900 series of LD products.

Maybe others will know more/better...

All the best,

Savant

Tom Harper kirjoitti:

Try RTAUtil 32 from Larson Davis web pages if the number of bits is OK
for you. Works ok with 3000+.

With narrowband data you might want to consult David. In my experience
DAhlstrom (at_as_you_know)) pcb.com is very helpfull. Don't know about
your "license stuff", though.

BR,

ari

machineryacoustics.fi

The "trans.exe" program has been around for a long time. I have used
quite often. It's the only way to pluck out the data you want for
display as you please via Excel, etc. I use the old ascii editor,
EDIT.EXE, to remove the vast majority in ancilary items, preserving just
the time stamp, memo, overall level and all band data.

TRANS.EXE should be available for download from the LD web site. There
are two versions, the earlier (dated 8/06/92; I dubbed it "trans92.exe")
was written for the LD3200 but also works on LD2800/2900 files. They
both have the same filename. The later (dated 4/18/94) TRANS.EXE changed
(improved?) how very long data lines such as FFT and RT60 data streams
are deposited in the output ASCII file.

Their DNA system was supposed to be an improvement, but it is hamstrung
in how data is graphically portrayed. It was also troubled by the dongle
era, where specific software codes had to be procured to unlock its use.

    Using trans's ASCII, I have my own data display and graphic schemes. I
place and parse the ASCII text data into Excel graphic formats I prefer.
Excel is very compliant in this regard.

    If LD no longer lists TRANS, tell me via E-mail which TRANS.EXE you
need. They are about 90k in size.

    Angeo Campanella