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Summary of Contents for TSI Quest BA-202
- Page 1 BIO-ACOUSTIC SIMULATORS MODEL BA-202 USER MANUAL Bio-Acoustic Simulator Models: BA-202 Bio-Acoustic Simulator User Manual BA-202-25 includes Octave Monitor with OSHA Requirements...
- Page 2 Bio-Acoustic Simulator Model BA-202...
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Page 3: Table Of Contents
Controls (See Figures 1, 2, and 3) ..10 Bio-Acoustic Simulator Models ....2 Principles of Operation ......11 General Description ......... 2 BA-202 Model Explained ....... 3 Bio-Acoustic Simulator Models BA-202-25 Model Explained ....3 Block Diagram ........12 Response Output Jack and Wiring .. -
Page 4: Bio-Acoustic Simulator Models
OSHA Requirements for Octave Levels (Type 2 accuracy) General Description The Bio-Acoustic Simulator Model BA-202 (Figure 1) is a high-quality measuring device used to fulfill the requirements for daily biological tests of audiometers. The Bio-Acoustic Simulator Model BA-202-25 also provides the capability to continuously monitor room noise in octaves during an actual hearing test. -
Page 5: Ba-202 Model Explained
Figure 2: Model BA-202-25 Bio-Acoustic Simulator & Octave Monitor (OSHA) BA-202 Model Explained The BA-202 series simulator is simply substituted for a human test subject, thus eliminating the need to use the same person with a known hearing threshold level. The Bio-Acoustic Simulator’s performance is consistent every day. This... -
Page 6: Operating Procedure
Also, for the BA-202-25, the microphone cable must also go from the unit to the inside of the audiometric room and must hang down from the ceiling (with only 10 feet of microphone cable provided). -
Page 7: Microphone Location (Ba-202-25)
Microphone Location (BA-202-25) The model BA-202-25 requires the use of a cable-mounted microphone to operate the octave band filters. It is recommended that the microphone be suspended by its cable close to the ceiling of the audiometric room. Also locate it in the best position so that the test subject's head will not interfere with it when entering and leaving the room. -
Page 8: Testing A Manual Audiometer
BIOLOGICAL LOG that was established early in the present calibration interval of the audiometer. All data should compare within ±5 dB of the original BIOLOGICAL LOG. See Table 1 for typical HL values. Bio-Acoustic Simulator Model BA-202... -
Page 9: Testing Audiometric Room Noise (Ba-202-25)
Attenuator Steps. These levels are just for reference to see if the audiometer is relatively correct the first time that it is tested. Testing Audiometric Room Noise (BA-202-25) Room noise within an audiometric room can be tested either continuously or periodically depending on various conditions that are producing the noise. -
Page 10: Testing Audiometric Room Notes
* The BA-202-25 is set at these values unless otherwise indicated. *** Contact TSI (See Customer Service section) for special room noise limits that can be ordered for the BA-202-25. TSI can also modify values for other special requirements. NOTE: There is a charge for this modification. Write special values here for reference if you want to do so. -
Page 11: Ba-202-25 (Model) Octave Monitor (Osha Version)
Will measure all earphones equipped with either MX-41/AR cushions or Telephonics Model 51 cushions, with or without Audiocups or similar earmuffs. BA-202-25 (model) Octave Monitor (OSHA version) Test Octaves (Hz) Federal Register dated Tuesday, March 8, 1983. and Activation 500 Hz –... -
Page 12: General Features
(RESPONSE CABLE) output can be wired for normally open, normally closed, or single pole double throw configurations (see Figure 4). MIC. Input This connector appears only on the BA-202-25. It allows Connector the external preamp and microphone system to be connected for making audiometric room background noise measurements in octave bands. -
Page 13: Principles Of Operation
Pressing the OFF button simply turns the unit off. The Model BA-202-25 contains the extra circuitry shown within the dotted lines. A microphone system and amplifier are used to condition the acoustic signal and then present this signal to resistive voltage dividers. -
Page 14: Bio-Acoustic Simulator Models Block Diagram
Bio-Acoustic Simulator Models Block Diagram Bio-Acoustic Simulator Models Block Diagram Figure 3: Block Diagram, Models BA-202 and BA-202-25 Bio-Acoustic Simulator Model BA-202... -
Page 15: Response Output Jack And Wiring
HL output until the relay is deactivated. When deactivated, the audiometer attenuator will increase the HL output until the relay is again activated, etc. Figure 4: Response Jack Wiring Bio-Acoustic Simulator Model BA-202... -
Page 16: Wiring
Lift the battery out of the compartment. Remove the old battery from the battery snap. Replace with a new 9-volt "alkaline" battery. NOTE: The battery MUST be of the alkaline variety! Bio-Acoustic Simulator Model BA-202... -
Page 17: Volt Power Adapter
Compare both sets of data. If the difference between both sets of data is 5 dB or less at each frequency, the Bio-Acoustic Simulator is functioning properly. If it is more than 5 dB at any frequency, the unit should be sent in for calibration/repair. (See TSI Service and Warranty policies.) Bio-Acoustic Simulator Model BA-202... -
Page 18: Octave Monitor Calibration
When using the 1-inch microphone, an adapter is not required. Turn the BA-202-25 on. While holding the ON button in, observe the 1 kHz light while slowly turning the CAL adjustment with a screwdriver. Adjust it until the light appears to glow at approximately one-half intensity. -
Page 19: Preamplifier Care
DO NOT kink the cable sharply since this may cause wire breakage. NOTE: ALWAYS connect and disconnect the connector from the BA-202-25 model by screwing and unscrewing only the "knurled" shiny part of the connector. NEVER try to unscrew the black rubber "strain relief". If the "strain relief"... -
Page 20: Contact/Service Information
1060 Corporate Center Drive Stirling Road Oconomowoc, WI 53006-4828 Cressex Business Park High Wycombe, Bucks HP12 3ST United Kingdom Telephone: 1-800-680-1220 (USA); Telephone: +44 (0) 149 4 459200 +1 651-490-2860 (Outside USA) tsiuk@tsi.com E-mail: technical.services@tsi.com E-mail: Bio-Acoustic Simulator Model BA-202... -
Page 21: Returning For Service
Calibration The Bio- Acoustic Simulators and TSI field calibrator devices should be examined regularly by the factory. An annual calibration is recommended. (Please see Service Department above.) Bio-Acoustic Simulator Model BA-202... -
Page 22: Warranty
If any malfunction is discovered, please contact your nearest sales office or representative, or call TSI’s Customer Service department at 1-800-874-2811 (USA) or +001 (651) 490-2811 (International). Bio-Acoustic Simulator Model BA-202... - Page 23 TSI Incorporated – Visit our website www.tsi.com for more information. Tel: +1 800 874 2811 India Tel: +91 80 67877200 Tel: +44 149 4 459200 China Tel: +86 10 8219 7688 France Tel: +33 1 41 19 21 99 Singapore Tel: +65 6595 6388 Germany Tel: +49 241 523030...
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