ADC Adscope 658 Instructions For Use Manual page 4

Operation of the Headset
The ADC ® Adscope
to provide comfortable ear fittings and the best sound trans-
mission. The binaurals (ear tubes) are angled at 15° to permit
a comfortable, acoustically sealed aural fit. Eartips should
point forward, towards the bridge of the nose to fit properly.
Adjusting the Spring Tension in the Headset
To reduce the tension, grip the binaurals firmly using both hands with
fingers at the center of the "Y" in the tubing, thumbs at each side
where the tubing branches out. Flex binaurals gradually until the
desired tension is obtained. To increase the tension, grip the binaurals
in the hand and squeeze the binaural tubes together gradually. Exces-
sive adjustment of the spring tension could weaken the spring.
Power ON/OFF
Press the Power button to turn the 658 on. The Multi-function button will turn blue, and the LCD will
show the selected Mode and Volume. The backlight will stay on for fifteen seconds.
The unit will remain on for up to three minutes, but the display will remain
dark to conserve power - A quick press of any button
will awaken the unit. Press the Power button for
two seconds (or more) then release to manually
power down the unit. The 658 turns off automati-
cally three minutes after the last button is
pressed.
Volume Control
While auscultating, press the Volume button '∧ '
to increase the sound level, and press the Volume
button '∨ ' to decrease the sound level. The volume
is divided into eight levels.
Mode Selection
After the 658 powers on, pressing either the Bell or Diaphragm Mode button will change
the mode.
B - Bell (Low Frequency 15-200Hz)
D - Diaphragm (High Frequency 100-500Hz)
Bell mode provides excellent detection of low &
medium pitched heart sounds and murmurs.
Diaphragm mode is designed for the detection
of pulmonary sounds and high pitched murmurs,
clicks, and ejection sounds.
TM 658 electronic stethoscope is designed
CORRECT INCORRECT
Volume
buttons
Diaphragm
Mode button
Bell Mode
button