Mindray Passport 5-Lead, Руководство по обслуживанию

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Passport 5-Lead, 5L, LT, XG Service Manual 0070-00-0420 1 - 127
Operation (5-Lead, 5L, LT and XG) Operation (XG)
• Verify that the sensor is properly and securely applied.
• Use a new sensor with fresh adhesive backing.
• Move the sensor to a less active site.
• Ensure proper sensors are used for the proper application. For instance, LNOP® - Adt
Adult Disposable Finger Sensors are not intended for use across a child’s hand or foot.
1.6.9.2 Special Features
Automatic Calibration
The oximetry subsystem incorporates automatic calibration mechanisms. It is automatically
calibrated each time it is turned on, at periodic intervals thereafter, and whenever a new
sensor is connected. Also, the intensity of the sensor’s LEDs is adjusted automatically to
compensate for differences in tissue thickness.
Each sensor is calibrated when manufactured; the effective mean wavelength of the red LED
is determined and encoded into a calibration resistor in the sensor plug. The instrument’s
software reads this calibration resistor to determine the appropriate calibration coefficients
for the measurements obtained by that sensor.
Oximetry Sensitivity Modes and Post Average Time
The Passport has two sensitivity modes for SpO
2
, normal and high. The user should choose
the sensitivity mode depending upon signal quality and patient motion. In most cases, the
normal setting will be appropriate. If the patient motion is limited, high sensitivity can be
used. High sensitivity will provide a better reading, however detection of a “SpO
2
SENSOR
OFF” condition will be less.
The Passport has the ability to change the averaging of the Saturation, Pulse Rate, and Signal
Strength measurements for SpO
2
. The post average time can be changed to 4,6,8,10,12,14
or 16 seconds.
Pleth Auto Scaling
The Pleth waveform is automatically scaled when using Masimo® SpO
2
. There is no
adjustment that can be made to the pleth waveform size.
Changing Sensitivity Modes
To change the sensitivity mode, select SpO
2
in the menu and toggle the sensitivity mode
choices for normal and high. Press SELECT (2) and EXIT (3) to lock in the choice and return to
monitoring mode. See “Use of Menus” on page 1-109.
Changing Post Average Time
To change the post average time, select SpO
2
in the menu and set the post average time
between 4 and 16. Press SELECT (2) and EXIT (3) to lock in the choice and return to
monitoring mode. See “Use of Menus” on page 1-109.
1.6.10 Sequence for Establishing SpO
2
with Nellcor® Pulse Oximetry
1. Select the appropriate sensor for the patient see table on page 1-51.
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