3M Littmann 3100 Manual - Halaman 5

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3M Littmann 3100 Manual

7. Monitor Patient Heart Rate

The Model 3100 detects and displays an acoustic-based heart rate when presented with consistent heart sounds (heart rate
variation < 10%). It takes five seconds to compute the initial heart rate and updates are provided every two seconds. Prior
to the initial reading, the display shows two dashes (--). For heart rates outside a range of 30-199 bpm, the display will also
show two dashes (--).
The acoustic-based heart rate display functions best when the Model 3100 is placed near the apex of the patient's heart.
If the heart rate changes from consistent to inconsistent or if there is excessive ambient noise, patient movement or lung
sounds during auscultation, the heart rate display number will display two dashes (--).
8. Monitor Battery Life
Battery life is indicated by an icon in the LCD display.
The Model 3100 comes with a AA Alkaline battery. This battery will last for approximately 60 hours of continuous use. In a
typical clinical setting, this represents about three months.
As the alkaline battery life depletes, the icon will change as follows:
The battery icon begins to blink when only a few hours of battery capacity remains.
CAUTION: When the battery is completely depleted the scope becomes inoperable. No sound will be transmitted without
a functioning battery.
IMPORTANT! NiMH (rechargeable) and Lithium batteries may also be used in the Model 3100. However, battery type must be
specified to ensure a reliable battery life indication (see Custom Configuration section below).
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9. Custom Configuration

The Model 3100 stethoscope has several operational settings that can be changed using its configuration menu system.
Within this menu system, the (+) and (-) buttons are used for scrolling and the (M) button is used for selecting options. The
Filter button acts an "escape" key, used for returning to the previous menu or to the operating mode of the stethoscope.
To enter the Setup Menu: Select the Setup option by pressing and releasing the (M) button. This will display a menu of
setup options. (NOTE: Only 3 options will visible at a time. All options can be viewed in sequence upon scrolling with either
the (+) or (-) buttons.).
To set Power: Select the "POWER" option in the Setup menu. Use the (-) and (+) buttons to scroll through the list of power
settings. Press and release the (M) button to select a setting.
The power settings provide different degrees of power consumption. In general, the longer the stethoscope remains
in an active mode, the greater its power consumption. The factory default is the LOW level. (NOTE: The Auto Off power
management feature is further described below.)
Auto Off enabled
Power Level
Low
Medium
High
Power On Time
10 sec
20 sec
30 sec
Power Off Time
30 min
2 hr
5 hr
Backlight On Time
3 sec
5 sec
5 sec
Auto Off disabled
Low
Medium
High
3 min
5 min
7 min
30 min
2 hr
5 hr
3 sec
5 sec
5 sec
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