Speaker Test (ST)
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Speaker Test Software

The ultimate in technology
Production testing of loudspeakers has never been so accurate, simple, fast or easy. Speaker Test is a software package designed exclusively for use with the TEF analyzer for production on line speaker testing with high ambient noise rejection. Developed for use with a PC, Speaker Test software features a choice of engineer or operator mode. The engineer mode is used by quality assurance and engineering personnel who design and supervise the individual measurements and tests that make up overall product testing. The operator mode provides simplified menu designs for routine automated testing which can be initiated with a bar code reader or keypad.
The ultimate in versatility
Speaker Test is ideally suited at incoming inspection to verify the performance of individual components, during the manufacturing process or for final inspection. Tests available include frequency response, phase response, impedance versus frequency, single-channel FFT, harmonic distortion, harmonic tracking, THD and THD plus noise. Speaker Test gives you ultimate control over the testing process. Using a variety of simple to complex setups, Speaker Test can test many different operational parameters and determine overall pass/fail statistics.
The test can be as simple as a frequency response curve compared to a pass/fail window or as complex as 30 different tests performed back-to-back or in any selected order. Standards may be made from either a single loudspeaker or a batch with minimum/maximum values or standard deviation. Statistics of individual pass/fail criteria are maintained to help determine trends, and a review mode allows the engineer to re-test a specific batch of speakers off the production line using original measurement data stored on the disk.
The ultimate in Speaker Test Software
The TEF analyzer features two line-level and two preamp inputs. Any input can be selected in the software, ensuring maximum flexibility in the tests you want to perform. Test output can be sent to screen or printer or saved to disk for flexible handling of results in rework or reports. Up to two graphs can be printed per page.
To speak to the TEF Sales Department, call 203-938-2588.

 Package contents
Cable for impedance measurements
Speaker Test software and manual
Test types
Time Test (ETC)
Frequency Test (TDS)
Test types (with pass/fail window option)
Frequency response
Harmonic tracking
Impedance vs. frequency
Phase response
Harmonic distortion
THD plus noise
Test sequence
A specific production sequence can contain from one to 30 lines of screen text, buzz tests and remote triggering along with the above test types in any order or combination.

Primary features

  • Operator or engineer mode
  • View detail of each measurement
  • Smoothing of data and pass/fail limits
  • Tracking by serial number information
  • Output can be ported to screen, disk or printer
  • Statistical information on each model or batch
  • Password protection for Engineer mode
  • Multiple methods of establishing pass/fail limits
  • Site license available
Modes of operation
Operator mode: This mode is used by an operator performing routine automated testing. Options available in Operator mode are limited to those designed into the test by the engineer.
Engineer mode: This mode is used by quality assurance and engineering personnel who design and supervise the individual measurements and tests that make up overall product testing.

Pass/Fail limits

Pass/Fail limits can be created in various ways:

  • Setting an envelope in a specified range above and below a referenced loudspeaker
  • Statistical analysis of the measurements of a batch of loudspeakers
  • Using the cursor to draw any arbitrary limits

Once a pass/fail limit is created, it can be modified manually by the use of a cursor.

 Operator mode-main menu commands
1) Select test
2) Do test
3) Set delay
4) Set amp level
5) Graph display (on-off)
6) Saved for future commands
7) Statistics
8) Keyboard/barcode input
9) Stop test
10) Quit
Selections 3, 4, 7 and 8 can be enabled or disabled at the option of the engineer.
Bar code reader
To gather information, start tests
For data gathered in one specific test type; engineer mode only
Difference mode
Shows the difference between a measurement and the data in reference memory
External Trigger
External devices can be triggered through a parallel port on the computer
TEF requirements
Works with TEF25, TEF20 HI or TEF20 SHIP with DSP host interface card
Printers supported
Windows compatible printers
Computer system requirements
Pentium Class Microprocessor
RAM- Four megabytes of available memory
Monitor- VGA (640x480)
Hard disk - 80 megabytes
Operating system - Windows 95, 98, ME, NT, 2000 or XP
FOR TEF20's -
Interface- One unused 8-bit ISA PC slot for installation of DSP host interface card. Not compatible with the IBM* Micro Channel Architecture (MCA) bus
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top TEF Home TEF25 TEFKITS Software Accessories TEF Talk TEF Tips Price List     Sales Tech Support
To speak with the TEF Sales Department, call 203-938-2588.