3M E-A-RTONE 3A, User Manual

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6. CALIBRATION FOR SPEECH AUDIOMETRY
ANSI S3.6-2004 specifi es, with an earphone connected to an HA-1 or HA-2 coupler, the 1k Hz
reference-tone level for the speech circuit as 12.5 dB above the 1k Hz pure-tone reference test
threshold for the earphone in question. Calibration of the E-A-RTONE™ Insert Earphone for a
speech signal is thus performed by setting a 1,000 Hz pure tone signal at 0 Volume Units (VU)
through the speech (microphone) circuit, with the audiometer attenuator dial set at 60 dBHL, and
adjusting for 72.5 (60.0 + 12.5) dB SPL in the 2cc coupler. A range of 69.5 to 75.5 dB meets the
±3.0 dB tolerance allowed in the Standard.
7. CABLE REPLACEMENT
Replacement cables are available for both the E-A-RTONE™ 3A Insert Earphone and
E-A-RTONE™ 5A Insert Earphone models. Cable replacement does not require concomitant
recalibration of your equipment. For the E-A-RTONE™ 3A Insert Earphone, regardless of the
impedance, there is only one (dual, mono plug) cable replacement part. E-A-RTONE 5A™ Insert
Earphone replacement cables, however, are impedance specifi c (10 ohm or 50 ohm), and cannot be
used interchangeably with a different (E-A-RTONE™ 5A Insert Earphone) impedance model, nor
should they be connected to an E-A-RTONE™ 3A Insert Earphone. For all models, the cable’s dual
pin connector and its respective transducer case receptacle (large-pin-to-large-hole; small-pin-to-
small-hole) orientation must be followed (see Figure 12. ). Improper or incorrect cable installation
will result in performance failure as well as damage to the cable and transducer case that may not be
covered by the product’s Limited Warranty.
8. TECHNICAL SPECIFICATIONS AND LIMITS FOR E-A-RTONE™ 3A AND 5A
INSERT EARPHONE
Available Impedance: 10 Ω (10 Ohm) or 50 Ω (50 Ohm)
1 kHz Sensitivity: 102.5 dB SPL (± 3.0 dB) in HA-2 (DB-0138) coupler
@ 0.1 Volt rms. (10 Ω )
@ 0.2 Volt rms. (50 Ω )
Distortion: < 3.0% measured @ 500 Hz, 118.5 dB SPL
Maximum output: Meets or exceeds 110 dBHL at standard audiometric
frequencies between 500 and 4000 Hz
Recommended Safe Operating Limits: Maximum continuous sine wave drive:
2.5 Volt rms. (for 10 Ω models)
5.0 Volt rms. (for 50 Ω models)
Recommended Maximum Peak voltage for 1% duty cycle:
10 Volts (for 10 Ω models)
20 Volts (for 50 Ω models)
Accessories supplied: 50 disposable E-A-RLINK™ 3A eartips, 10 disposable E-A-RLINK™ 3B
eartips, 4 disposable E-A-RLINK™ 3C eartips, Velcro Clip(s), Lanyard (5A), Neck Loop (3A) and
213cm (7’) cord with dual (left and right) 1/4” mono color-coded phono plugs.
Data supplied: User Instruction Booklet
2cc-coupler frequency response chart on individual units.
10. LIMITED WARRANTY
3M Company warrants E-A-RTONE™ 3A and E-A-RTONE™ 5A insert earphones 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 end user, but in no event shall any warranty be extended more than
eighteen (18) months from the date of manufacture. During this warranty period, 3M will repair or
replace, at its sole discretion, any defective part returned to 3M with shipping charges prepaid to the
address listed below. This shall be the sole and exclusive remedy available for any product defect
or failure under this warranty and for any and all claims arising out of the purchase and use of the
product, and the sole obligation of 3M Company under this warranty shall be limited to repair or
replacement of any defective part.
For each product returned during the warranty period, the serial number(s) of the product, the
original date of purchase, and the nature of the problem must be included. Merchandise not
returned with shipping charges prepaid will be refused. Timelines for completing warranty work vary
depending on the availability of parts and the workload. If any product is returned which does not
qualify for warranty repair, the product will be repaired and fl at rate repair charges will be applied
and billed. All repair charges must be paid in full prior to return of any product.
3M’s warranty for E-A-RTONE™ 3A and E-A-RTONE™ 5A insert earphones does not cover
damage or failure caused by abuse, misuse, abnormal usage, faulty installation, improper
maintenance, failure to follow the operation and other instructions found in the written materials
provided with the product, or repairs other than those made by 3M. 3M shall not be liable for any
special, incidental or consequential damages arising out of, or in the connection with, the operation,
use or performance of any E-A-RTONE™ 3A and E-A-RTONE™ 5A insert earphones including,
without limitation, any losses of revenues or profi t.
This Warranty is in lieu of all other oral or written, express or implied warranties including,
without limitation, warranties of fi tness for a particular purpose or merchantability, and
there are no warranties that extend beyond the description or duration of this warranty.
No representative, agent, dealer or employee of 3M is authorized to give any other warranty or to
assume for 3M any other liability in connection with sale or service of the products covered by this
limited warranty.
3M Company
Auditory Systems Repair
8001 Woodland Drive
Indianapolis, IN 46278
Toll Free Customer Service: (from the US) 888/733-4512 x 2, Fax: 800/488-8007
International Ph: 317/656-5880, Fax: 317/656-5760
Technical Support Ph: 317/692-6550, Fax: 866/428-3962
©3M 2010
3M, E-A-RTONE™, and E-A-RLINK™ are trademarks of 3M Company
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ITA140763/0811 © 3M
3M United Kingdom PLC
3M Centre,Cain Road Bracknell,
Berkshire RG12 8HT
0870 60 800 60
3M Ireland
The Iveagh Building, The Park
Carrickmines, Dublin 18
1 800 320 500
3M South Africa
146a Kelvin Drive, Woodmead
Sandton 2128, Johannesburg
+27 11 806 2230
3M Gulf Ltd.
P.O. Box 20191
Building 11, Third Floor, Dubai Internet City,
Deira
+ 971 4 367 0777
3M Egypt Trading Ltd.
Sofi tel Tower, 19th Floor, Corniche el-Nil St.
Maadi, Cairo
+202 525 9007
3M Auditory Systems
5457 W. 79th Street,
Indianapolis, IN 46268,
888 733-4512
Caution:
Use only E-
A-R
Approved
Front
Tubes
E-A-RTONE
™ GOLD
Insert Earphone
U.S. Patent Nos. 4,6
77,679;724,285
Large
PIN
Small
PIN
Small
HOLE
Large
HOLE