10
V. Features
A. Controls
All functions of the 920 are controlled by switches found on the front of the
unit. Refer to Figure III for an illustration of these switches.
1. Power
Pressing the ON switch (“
”) causes power to be applied to all
internal circuitry. Pressing the OFF switch (“
∅
”) causes power to be
removed from the displays and puts the pulse oximetry circuitry into
a low power standby mode.
In order to conserve battery life, the 920 will automatically power off
after 10 minutes of inactivity. Inactivity is indicated by dashes on the
displays and is caused by:
•
no sensor connected to the pulse oximeter
•
patient pulse too low
•
sensor not attached to a patient
Each time a reading is displayed, the 10-minute timer is restarted.
The “
” switch has additional clock and printer mode setting
functions when used in conjunction with the “
ñ
” switch. Refer to
Section 3 of this section for Setup Mode instructions.
2. Display Brightness
The arrow switch (“
ñ
”) causes the brightness of the digital displays to
change. When powered up, the digital display defaults to the maximum
brightness. Pressing the “
ñ
” will advance the brightness to the lowest
setting, and each subsequent press will advance the brightness through
8 different settings. The function is circular which means it will cycle
through the entire brightness range and then start at the beginning
again. The lower light brightness may be used to preserve battery life.
The higher light intensity may be used to view the displays from a
distance.
NOTE:
Reducing the LED display brightness can
extend battery life up to 100%!
The “
ñ
” switch has additional clock mode setting functions when
used in conjunction with the “
” switch. Refer to Section 3 of this
section for Setup Mode instructions.
Summary of Contents for 920
Page 1: ...English Instruction and Service Manual Models 920 and 920M Hand Held Pulse Oximeters ...
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