9
Using the 8500 and 8500M Pulse Oximeters
With AA Batteries
• If the clock/calendar is not set when the unit is stored, alkaline batteries will need replacement
in 10-12 months if the unit has not been used.
• If the clock/calendar is set when the unit is stored and if the unit has not been used, alkaline
batteries will require replacement in about 6 weeks
.
Connecting the Sensor
Connect the pulse oximeter sensor (with the Nonin logo facing up) to the top of the device as
shown. Ensure that the sensor is firmly plugged in. Refer to “Specifications” or to the specific
sensor Instructions for Use.
Figure 3: Connecting a Sensor
Turn On/Off
•
Turn on
the device by pressing the ON (
|
) button.
•
Turn off
the device by pressing the OFF (Ø) button.
To conserve battery life, the device automatically powers off after 10 minutes of inactivity.
Inactivity is indicated by dashes on the displays and may result from an improperly connected
or positioned sensor, or from an inadequate patient pulse signal.
The Advance/Dimmer button controls the brightness of the digital displays. When turned on,
the digital display defaults to the maximum brightness. Pressing the Advance/Dimmer button
will decrease the brightness to the lowest setting, and each subsequent press will increase the
brightness through 8 different settings. Lower brightness settings will conserve battery life.
NOTE:
Reducing the LED display brightness can extend battery life up to 60%.