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BIOPAC Hardware | SS30L | Page 1 - 1 Updated: 7.16.2012
SS30L ELECTRONIC STETHOSCOPE TRANSDUCER
The SS30L stethoscope was developed to teach the standard procedure for listening to heart sounds and Korotkoff
sounds with a “normal” stethoscope, and record simultaneous sound data. A microphone in the SS30L records
sound as it is heard and the BSL software displays the sound wave during and after recording (a variety of
acoustical signals can be recorded). If ECG is also recorded, the timing of the heart sounds with the ECG can be
correlated. The SS30L can be used with the SS19L Blood Pressure Cuff to record Korotkoff sounds for easy
determination of systolic and diastolic blood pressure. With this combination, it is easy to obtain very accurate
and repeatable results — usually within 10% of those determined by direct measurement.
No calibration required, just select a Stethoscope Preset
(Heart or Korotkoff Sounds)
See also: Biopac Student Lab Lesson 16 Blood Pressure and Lesson 17 Heart Sounds.
SS30L SPECIFICATIONS
Microphone Bandwidth: 20-100 Hz (does not impact acoustical bandwidth, used for data viewing)
Stethoscope Length:
From Y to acoustic sensor point: 57 cm
From Y to ears: 21 cm
Microphone Cable length: 3 meters
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