GE CareScape V100, Service Manual

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2-14 CARESCAPE V100 Vital Signs Monitor 2048723-002C
Equipment overview: Functional description
temperature measurement, but not a fast (predictive) axillary temperature
measurement.

The Tri-Site temperature option can take a fast (predictive) oral, rectal, or
axillary measurement.

Both the Turbo Temp and Tri-Site temperature options can take a
continuous (monitor) oral, rectal, or axillary measurement.
Exergen temperature
The Exergen Temporal Scanner ™ Temporal Artery Thermometer uses ultrafast
infrared scanning technology with arterial heat balance algorithms to quickly
and non-invasively measure the patient's temperature. As the caregiver passes
the scanner over the patient's skin, its infrared sensor samples at 1000 times per
second the radiant heat emanating from the body, which reaches a maximum
over the temporal artery. The scanner then derives the patient's body
temperature from the peak infrared sensor readings and the local ambient
temperature as measured by the scanner. A scan behind the ear is included in
the use protocol to prevent errors due to perspiration.
Refer to the operator's manual for complete instructions for use. For more
information on the theory of operation, scientific, educational and technical
information, access the following website: www.TAThermometry.org.
Functional description
The following paragraphs provide the functional interface relationship. The
monitor contains a number of electrical and electro-mechanical assemblies.
These assemblies are:

Main Board PWA

User Interface (UI) Board PWA

SpO
2
PWA (optional)

Printer (optional)

Pneumatic Valve/Manifold (PVM)

Optical Switch (optional)
Main board PWA
The monitor’s Main Board is based on the NXP LPC2366 integrated
microprocessor. The microprocessor integrates Flash ROM, RAM, A/D converter
with input multiplexer, SPI interface, and timers into one chip. This
microprocessor is the primary processor for the monitor. It services and controls
the Patient Parameter Interface (PPI) devices, printer, UI Board, Real Time Clock,
audio circuit, and host communication. There are three TI MSP430 secondary
processors that control Power, NIBP and Temperature. The Power Processor
controls the watchdog, primary processor reset, and power supply control. The
Power processor is powered at all times.
The NIBP processor controls pneumatic safety interlock, timing check, and NIBP
control. The temperature processor controls the temperature parameter.