657 Electronic Stethoscope User’s Manual
A Special Than You... Thank you for choosing the ADC® 657 Electronic Stethoscope. We're proud of the care and quality that goes into the manufacture of each and every item that bears our name. Only the finest materials are used to assure you of a timeless instrument designed for optimum performance. You'll quickly appreciate the results, for you now own one of the finest electronic stethoscopes that money can buy.
Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 • Intended Use • Warning • Caution 2. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 3. Name and Function of each part . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Introduction Intended Use • The ADC® 657BK is an electronic stethoscope which transmits lung/heart sounds from a patient through auscultation. It amplifies sounds and removes noise by using a contact microphone and electronic circuits. Warning • Do not tap or scratch the chestpiece diaphragm while wearing the ear set while the power is on. It may cause damage to your hearing. • Do not bend harshly or apply excessive force to the stethoscope, this may cause it to break.
2. Features Main features of the ADC® 657 electronic stethoscope • Improves low frequency sound transmission characteristics with the use of a piezopolymer film contact microphone. • MPU controlled automatic power-off. • Mode selection (Bell, Diaphragm, Wide). • 8-level digital volume control. • Memorizes the mode and volume of the previous operation. • Ergonomic design for comfort.
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Battery compartment Binaurals and eartips
4. Operation Binaural positioning The ADC® 657 electronic stethoscope is designed to provide comfortable ear fittings and the best sound transmission, considering morphology of the outer ear canal. The binaurals (ear tubes) are angled at 15° to permit a comfortable, acoustically sealed aural INCORRECT CORRECT fit. Eartips should point forward, towards the bridge of the nose to fit properly. The ADC® logo on the battery compartment should be visible by the patient.
Mode selection After the Green LED light confirms that the power is on, the power button can then be used for mode selection. As you press the power button, the LED will cycle to the next mode. Continue pressing the power button until your selected mode is illuminated. B - Bell (Low Frequency 15200Hz), D - Diaphragm (High Frequency 100-500Hz), W - Extended (Wide Frequency 15-1000Hz). Bell provides excellent detection of low & medium heart sounds and murmurs.
5. Specifications Power supply: 1.5V (AAA Battery) Electric current supply: 20mA (max) Battery life: 150 hours under continuous power on (approximately 3000 measurements at 3min/per.) Weight: 6.17 oz. (175 grams) Length: 29.
6. Parts, Service, and Warranty Replacement parts • Battery • Eartips Item Number AAABAT 602-07BK LIMITED WARRANTY American Diagnostic Corporation (ADC®) warrants its products against defects in materials and workmanship under normal use and service as follows: 1. Warranty service extends to the original purchaser for 2 years from the date of purchase. 2. The entire stethoscope is warranted. This warranty is only valid if the product is registered online at www.adctoday.com.
