AOSafety E-A-RTONE 3A manual

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Table of contents for the manual

  • Page 1

    Instructions for the use of E - A - RTONE ® 3A Insert Earphones Revised 1997 per ANSI S3.6 - 1996 and ISO 389 - 2:1994 12/99[...]

  • Page 2

    1 INTRODUCTION Congratulations on the purchase of your new E - A - RTONE ® 3A Insert Earphones. Whether you are performing hearing screening in an educational or industrial setting, testing related to the fitting or evaluation of amplification, audiological research, or comprehensive diagnostic assessment, E - A - RTONE ® 3A Insert Earphones prov[...]

  • Page 3

    2 1. Preliminary Procedures for Use of the E - A - RTONE ® 3A Initially examine the ear canal for obstruction(s) and evaluate the proper size E - A - RLINK ® disposable foam eartip needed to fit the particular ear canal. Although the standard E - A - RLINK ® 3A fits most ear canals, for smaller ear canals, the smaller diameter E - A - RLINK ® 3[...]

  • Page 4

    3 -10 0 10 20 30 40 50 60 70 80 90 100 110 125 250 500 1000 2000 4000 8000 Hz dB Full E-A-RLINK insertion in both ears Shallow insertion in dead ear only Shallow insertion in both ears Obtained Interaural Attenuation 2. Background Noise Reduction A major benefit of the E - A - RTONE ® Insert Earphone in combination with the E - A - RLINK ® dispos[...]

  • Page 5

    4 3. Positioning of the E - A - RTONE ® When positioning the E - A - RTONE ® unit on the subject, avoid sound tube contact with the subject’s clothing. Alw ays use E - A - RLINK ® tips in both ears, or block the opposite ear with an E - A - R ® foam earplug. 4. Cord Assembly and Unit Placement The cord assembly is zip - cord constructed. If m[...]

  • Page 6

    5 ANSI S3.6 - 1996 and ISO 389 - 2:1994 Calibration Values Frequency in Hz Coupler 2cc DB - 0138 Coupler IEC 711 Coupler 2cc HA - 1 125 96.0 98.0 96.5 250 84.0 87.5 84.5 500 75.5 79.5 76.0 750 72.0 76.0 72.0 1000 70.0 75.5 70.0 1500 72.0 79.5 70.0 2000 73.0 81.5 72.5 3000 73.5 83.0 72.5 4000 75.5 85.0 70.0 6000 72.0 86.0 67.5 8000 70.0 85.5 66.5 8.[...]

  • Page 7

    6 10. Technical Specifications and Limits for E - A - RTONE ® 3A Impedance: 10 Ohm, 50 Ohm or 300 Ohm 1 kHz Sensitivity: 102.5 dB SPL in DB - 0138 (HA - 2) coupler @ 0.1 Volt rms. (10 V ) @ 0.2 Volt rms. (50 V ) 103.5 dB SPL in DB - 0138 (HA - 2) coupler @ 0.49 Volt rms. (300 V ) Limits: ± 3 dB Distortion: < 3% measured @ 500 Hz, 118.5 dB SPL [...]

  • Page 8

    7 12. Limited Warranty Aearo Company warrants each insert earphone (sold under the name E - A - RTONE ® 3A) it manufactures to be free from defects in material and workmanship under normal use for a period of twelve (12) months from the date of sale to the original purchaser. During this warranty period Aearo Company Auditory Systems will repair o[...]

  • Page 9

    8 Aearo Company Auditory Systems Production 8001 Woodland Drive Indianapolis, IN 46278 Customer Service (from the US only): 800/624 - 5955 Fax: 877/807 - 7113 International Customer Service Ph: 317/65 6 - 5713 Fax: 317/656 - 5760 Technical Support Ph: 317/692 - 6550 Fax: 317/692 - 6604 ©1995, 1990, Aearo Company Auditory Systems E - A - R ® , E -[...]