9
Introduction
Batteries
The device uses 2 AAA alkaline batteries.
With new alkaline batteries, battery life is approximately 48 hours (minimum) when not
connected to a Bluetooth device. When connected to a Bluetooth device, battery life will
vary depending on class of operation. See “Specifications” for detailed battery life
information.
The battery indicator shows one of four states: full, half, low, and critical. Replace the
batteries when device reaches low state. A low battery has a minimum of 10 minutes
before it reaches critical state. Actual battery life depends on Bluetooth radio use. In critical
battery mode, the battery indicator blinks and the device no longer monitors or records
patient data.
When batteries are removed, the device maintains the time and date for up to 30 seconds.
If replacing batteries takes more than 30 seconds, or if the battery level is at or below the
critical level, clock settings are lost and the device reverts to Spot Check mode. Use
nVISION software to reset the clock and change the operation mode.
Remove the batteries and disconnect the sensor if the device is to be stored for more than
1 month. In storage, battery life is approximately 9 months.
Bluetooth Technology
Bluetooth technology allows wireless connections between electronic communications
and computing devices. The technology is based on a radio link that offers fast and reliable
data transmissions. Bluetooth uses a license-free, globally available frequency range in
the ISM band—intended to ensure communication compatibility worldwide.
Nonin’s use of Bluetooth wireless technology allows SpO
2
and pulse rate data to be
transmitted through a Bluetooth radio to a compatible Bluetooth-enabled device. Nonin’s
wireless system removes the cable connection from the device, giving patients increased
ability to move freely.
To make efficient use of battery life, Nonin’s WristOx
2
, Model 3150, uses an automatically
switchable Class 1/Class 2 Bluetooth radio with a maximum range (spherical radius) of
about 100 meters (328 feet). Obstacles and other conditions may affect range, and class
of operation and connection mode will impact battery life. See “Specifications” for detailed
battery life information.
NOTES:
• This device contains non-volatile memory. Removing or replacing batteries does not
affect the data stored in memory. Stored data remains in memory until overwritten by
newer data or cleared from memory with nVISION software (version 6.3 or greater).
• If batteries are replaced while recording data, the session will terminate and some data
from the session may not be saved. The terminated session will be time stamped with
the current date/time the next time the device turns on.
• If clock settings are lost, the date and time restarts at 01:01:10:00:00.
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