3M Littmann 3200 Bedienungsanleitung Seite 8

5. Select Filter
This electronic stethoscope allows the user to select between three different digital frequency filters to better emphasize the
specific patient sounds of interest.
• The Bellmode amplifies sounds from 20 - 1000Hz, but emphasizes lower frequency sounds between 20 - 200Hz.
• The Diaphragm mode amplifies sounds from 20 - 2000Hz, but emphasizes the sounds between 100 - 500Hz.
• The Extended Range mode amplifies sounds from 20 - 2000Hz similar to the Diaphragm Mode, but provides more
low frequency response between 50 - 500Hz.
The default setting is the Diaphragm filter. Instructions for changing the default filter setting are given in the Custom
Configuration section below.
To select filter: Depress and release filter button (as shown in diagram) until desired filter mode appears on the LCD display.
Extended
Range Mode
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6. Adjust Sound Amplification Level
The Model 3200 sound level can be amplified in 8 increments up to 24X amplification of a non-electronic (cardiology-level)
stethoscope. Level 1 is equal to a non-electronic stethoscope. Level 9 is equal to 24X amplification of a non-electronic
stethoscope. The greater the amplification, the more bars you will see.
A default start-up amplification level can be set using the instructions provided in the Custom Configuration section below.
The default setting is marked by the box on the vertical bar shown in the volume icon in the LCD display. The illustration
shows a default amplification setting at Level 3.
• Increase Amplification: Press ( + ) button until desired amplification level is achieved
Decrease Amplification: Press ( - ) button until desired amplification level is achieved
•
Bell
Mode
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Diaphragm
Mode
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