Section 3 —Theory of Operation
Page 3-4
VitalCare
TM
506N3 Series
Service Manual
Criticare Systems, Inc.
Temperature Modules
The 506N3 Series offers a choice of two leading predictive
temperature technologies: FILAC FasTemp™ and Alaris
TurboTemp
®
. Each operate in a similar manner.
Patient temperature sensing is accomplished by utilizing a
negative-temperature coefficient (NTC) thermistor located in the
probe tip. A heating element under algorithmic control heats the tip to
accelerate the temperature measuring process.
Active circuitry on the temperature module converts the analog
signals from the probe to a digital format, which is then used by the
microprocessor located on the printed circuit board. Software
algorithms executed in the microprocessor convert the digital
information to a format for processing by the 506N3 main processor.
F
AS
T
EMP™ MODULE (PN 83460B001)
The FILAC FasTemp™ OEM Module is purchased from Tyco
Healthcare/Kendall to utilize their fast predictive temperature
algorithm.
ALARIS
T
URBO
T
EMP
®
MODULE (PN 91403A001)
Criticare Systems, Inc. produces the Alaris TurboTemp
®
module
under license from Cardinal Health. This module utilizes the Alaris
TurboTemp
®
predictive algorithm.
FasTemp Isolation Board
(pn 91386A001/2)
The FasTemp Isolation board is designed to provide electrical
isolation of 1500VAC minimum through power and serial interface
connections. This board is mounted in proximity to the FILAC
FasTemp module but not physically attached. Electrical connections
to the FasTemp board are:
1. Power;
2. RS-232 serial; and
3. “TALK Mode” control line.
Printer Module
The printer module consists of the pn 91389A002 Printer Board and
the Seiko LTP1245 printer, all mounted within a plastic enclosure.
The enclosure is mounted in place of a “blank” panel on the main
506N3 enclosure when the printer option is selected. Electrical
connection to the Main Board via a ribbon cable supplies both power
and digital control lines.
Summary of Contents for 506DN3
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