3M Littmann Master Classic II Mode D'emploi page 6

Instructions for Use
Changing Frequencies Using the
Tunable Diaphragm
Your 3M Littmann Master Classic II
™ ™
is equipped with a tunable diaphragm that enables
you to listen to both low and high frequency sounds
without turning over the chestpiece.
To listen to low and high frequency sounds without
removing and repositioning the chestpiece simply
alternate between light and firm pressure on
the chestpiece.
Headset Adjustment
Your new Littmann stethoscope
is designed to provide a
comfortable, acoustically sealed
ear fit. Notice that the eartubes
are set to accommodate the
Correct
typical anatomy of the ear canal.
The eartips should point in a
forward direction as you insert
them into your ear canals.
Incorrect
Stethoscope
™
Low frequencies: To listen to
low frequency sounds
(traditional bell mode) use
very light skin contact.
High frequencies: To listen
to higher frequency sounds
(traditional diaphragm mode),
press firmly on
the chestpiece.
Removing the Diaphragm and
Cleaning the Chestpiece
2
To reduce spring tension in the
headset, hold each eartube at the
bend near the eartip and
gradually pull apart until
fully extended.
To increase spring tension, grasp
the headset with one hand where
the eartubes enter the tubing and
squeeze until the tubing on one
eartube touches the other. Repeat
as necessary.
For maximum acoustic
performance, comfortable
patented 3M Littmann
™
Snap Tight Soft-Sealing Eartips
are provided with your
stethoscope. This stethoscope
utilizes a unique design for
attaching the eartip to the
eartube. The eartips are pushed
on to the end of the eartube and
snapped firmly into place. To
remove, pull firmly on the eartip.
With the diaphragm side up,
grasp the rim with the thumbs
and index fingers of both hands
and roll the rim off the edge of
the chestpiece. Remove the
diaphragm from the rim and
clean the parts in soapy water or
wipe with alcohol. Chestpiece
surfaces can be wiped with
alcohol or soapy water. Dry all
parts and surfaces thoroughly
before reassembly.
®