Radical Signal Extraction Pulse Oximeter Operator’s Manual
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o p e r a t i o n
NOTE:
Since the Radical employs a sophisticated data compression scheme the actual
trend capacity is dependent on the type of data that is collected.
B a c k l i g h t / c o n t r a s t o p e r a t i o n
The backlit LCD screen of the Radical Handheld can be set to four levels of illumination,
in addition to no illumination, when Radical operates as a standalone pulse oximeter.The
Radical temporarily indicates the illumination level on the display following a change in
illumination level. To select the level of illumination simply press the Backlight/Contrast
button located on the front panel of the Handheld.
When the Radical Handheld unit is released from the Docking Station the illumination of
the LCD screen automatically reverts to the lowest level to conserve battery power. To
select a different level of illumination, press the Backlight/Contrast button again. In the
Handheld mode, three levels of illumination are available.
When the Handheld unit is re-attached to the Docking Station, as well as when the
Radical is powered on in the Standalone configuration, the backlight is automatically set
to the maximum illumination when the unit is AC line powered.
To change the contrast of the LCD screen, select the Contrast parameter of the Display
menu. While changing the contrast setting, the screen will refresh to reflect the current
setting.
The contrast of the LCD screen can also be changed by depressing and holding the
Backlight/Contrast button located on the front panel of the Handheld. While holding the
Backlight/Contrast button, the screen will refresh to reflect the current setting. Release
the button at the desired setting.
MENU ITEM
DESCRIPTION
TREND PERIOD
The Trend period setting determines how often a set of SpO
2
, PI
and
pulse rate data points is stored in trend memory. A setting of 2, for
example, sets the Radical to store one set of SpO
2,
PI and pulse rate
measurements every 2 seconds, resulting in a minimum trend capacity
of 87 hours. A setting of 10, for example sets the Radical to store one
set of data points every 10 seconds, resulting in a typical trend storage
capacity of 18 days.
TREND SETUP
This menu allows the user to set the default trend settings and to clear the trend data, or
download the trend data to the serial port. The default settings are used to scale the
trend graphs when the trend data button, located on the main display, is accessed.
MENU ITEMS
DESCRIPTION
%SpO
2
HIGH
SCALE
Sets the high scale of the SpO
2
trend graph.
%SpO
2
LOW
SCALE
Sets the lower scale of the SpO
2
trend graph.
PR HIGH SCALE
(BPM)
Sets the high scale of the pulse rate trend graph
PR LOW SCALE
(BPM)
Sets the low scale of the pulse rate trend graph
PI HIGH SCALE
Sets the high scale of the PI trend graph
PI LOW SCALE
Sets the low scale of the PI trend graph
DEFAULT VIEW
Selects the default time scale of the trend view. This setting only selects
the time scale of the trend view when the trend data is initially displayed,
(i.e. when the trend data is initially accessed). The selections are 24 hrs,
12 hrs, 8 hrs, 4 hrs, 2 hrs, 1 hr, 30 minutes, 10 minutes, 1 minute and 20
seconds.
TREND ACTION
SERIAL DUMP
To send all the data that is stored in trend memory to the serial port
select the Serial Dump option. Use this option to communicate the
stored data set to trend graphing software applications.
ANALOG DUMP
To send all the data that is stored in the trend memory to the analog
output select the Analog Dump option. Use this option to print the trend
information on an analog chart recorder.
To print the trend data that is shown in the Trend View select the Print
option. The trend data is first printed in histogram format, followed by a
table of data that shows the time and date stamp of a trend record, and
the SpO
2,
PI and pulse rate measurement. Each trend record is printed
on a single line, followed by a carriage return and line feed character.
o p e r a t i o n
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Radical Signal Extraction Pulse Oximeter Operator’s Manual
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