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bobeaton

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Reply with quote  #1 

Just curious if there are any others.

 

Bob

BlairH

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Reply with quote  #2 

Bob,

 

We use a TEF12 here to perform final production test on speaker drivers. I have purchased a TEF25 and am currently working on getting it implemented to replace the TEF12.

 

Blair

bobeaton

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Reply with quote  #3 

Blair,

Well at least that's two of us.

I think maybe we spoke at one time. I'm doing end of line testing for microphones.

What I would really like is a high level dll to communicate with the TEF25 directly  (TEF25 only has USB), so I can get rid of Sound Lab.

Nothing against Sound Lab, except it won't do what I need.

I'm currently using homegrown software, but I have to use SoundLab to run a TDS curve. I use my own software for limit creation, limit checking, smoothing, batch analysis, and reading a special test sequence format.  Plus, other stuff such as archiving curves and saving test results from four test stations to a network database. :-)

 

It's been working fine, but it's a Band-Aid solution and I will likely get forced to a different system.

 

Anyway, looks like we are definitely in the minority of users (no big surprise), which would put something like a custom dll at the bottom of the Gold Line todo list.

 

Charlie

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Reply with quote  #4 

Bob,

Sounds like what you want is an ASIO driver for the TEF25 hardware.  This would be nice so that the hardware could be used with other software.  This is one of the reasons I don't yet have a 25, just the older 20.


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Charlie Hughes
bobeaton

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Reply with quote  #5 

Charlie,

You’re right. And two of the test stations are still TEF 20’s. However, I’m reluctant to invest the time in developing this to run over a serial port if the TEF 20 is near the end of it’s life. So I’m currently looking at SoundCheck by Listen Inc.

BlairH

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Reply with quote  #6 

I was tempted to replace the TEF 12 with a LabVIEW based system with data acquisition hardware in a PC, but I was under the impression that the TEF was more than just an apply the stimulus and measure the response - that it actually analyzed the response to determine the performance of the system being measured.

 

I've only been looking at Sound Lab for a short period of time. Hopefully I can figure out how to make it simple enough for a production operator to use.

 

The TEF 12 had production test software, the device under test was compared to a standard with limits on the difference in performance across the frequency range. It is simple for an operator to use. Unfortuentely, my TEF 12 has lost its display, which is simple enough to fix with an external monitor, and the 5 1/4 floppies are starting to get read errors, so its remaining usable time is limited.

 

Bob, how are you implementing your external software to exercise the TEF test functions?

 

Blair

 

bobeaton

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Posts: 9
Reply with quote  #7 

Blair,

I had the same issue with presenting a simple interface to the operator.

I won't go into the issues with Windows Mic test here. Suffice to say it won't do what I need. No idea about Windows Speaker test.

 

I’m only using SoundLab to run curves and save them to disk, and then display the results after I’ve smoothed, normalized, and checked them against the test limits.

I’m using VB for the GUI. The rest is done in either a dll or in VB.

To drive SoundLab I’m using AutoIt:

http://www.autoitscript.com/

 

I place my program windows on top of the SoundLab windows (forced on top, so the normal menus are hidden).

I then generate a number of script files on the fly to save, and load curves back into SoundLab. I load the scripts and drive SoundLab through AutoIt.

As mentioned, I also save data, and do things like warn if the reference mic curve is too old, send an email to the supervisor if network connectivity was lost, etc.

 

Here are a couple of quick screen shots to give you and idea on the operator interface.

 

Pic1

 

Pic2

 

It’s far from elegant, but it’s been working pretty well.

 

I have a separate program I developed for creating limits and doing some batch analysis.

It’s a more “finished” program, and if you’re curious, here is the help file. (CHM format so save it to disk to view.). Of course it was developed specifically for my own needs.

 

Limitgenerator help

 

Ray

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Reply with quote  #8 
Quote:
Originally Posted by bobeaton

I won't go into the issues with Windows Mic test here. Suffice to say it won't do what I need. No idea about Windows Speaker test.



I have a friend who runs 3 TEF20SHIP doing production testing of microphones with the old DOS SpeakerTest software.  I assume this software and the matching HI Interface card are available from Goldline.

I have sold two different companies TEF20's to expand their existing production testing of microphones they have been doing with TEF20's.

I did not reply to this thread earlier since I did not know anyone doing production line testing using a TEF25.  I'm sure there must be others out there, but I just don't know them.

Ray A. Rayburn
Ray@SoundFirst.com
http://www.TEF20.com/
http://www.SoundFirst.com/


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Ray A. Rayburn
Ray@SoundFirst.com

phil

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Reply with quote  #9 
We are using a TEF 25 for loudspeaker testing here at SLS.
I wrote some simple scripts for the production guys.
Regards,
Phil Nelson
SLS Loudspeakers


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Phil Nelson
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