SC 7000 and SC 9000XL Patient Monitors Service Manual
ASK-T898-03-7600 Siemens Medical Systems, EM-PCS Danvers 21
7k9kXLTM.c2.CD_ROM.fm/04-99/kaupp
NOT A CONTROLLED DOCUMENT
Figure 2-8 MultiMed Front End
• Specially shielded connectors and cables are used to provide
excellent immunity up to 1000MHz and can not be touched by patient
even when disconnected.
• Single cable from MultiMed Pod to main SC7000 or SC 9000XL unit
reduces clutter between bed and monitor.
8.3 Functional Description
Transducers gather physiological data at the patient and feed them into the
small MultiMed Pod at the bed. The MultiMed Pod in turn is connected via
a 3-meter cable to the MultiMed front end in the main unit where analog
ECG, Respiration, Temperature, and SpO
2
signals are converted to digital
form and sent through isolators for processing.
8.3.1 ECG/Resp The MultiMed Pod located close to the patient accepts a set of 3, 5 or 6
shielded ECG electrode leads, an SpO
2
(Nellcor) cable adapter, and a
temperature sensor. The ECG section contains RF filters, and overvoltage
clamps that include 1k series resistors to limit shunting of defibrillator
current. The SpO
2
and temperature sections also contain RF filters.
Pressure
Transducer
Low-Pass
Filter
M
U
X
Linearizer
16 Bit
A / D
Converter
Bandpass
Filter
Amp
Amp
Pre-
Amp
Amp
Amp
NBP
Hose
NBP
Power Monitor
4
2
2
Temp
Temp Ref.
ECG
4
2
Pace
RF Filter
Lead Off
Neutral
SW
Ambient
Li
ht
Rejection
MultiMed
Defib
Protection
ESU
LED Drive
Bandpass
Filter
Lead
Select
Modulator
Demodulator
Current
Sources
Modulator
Demodulator
Resp
Differential
I/V
Converter
Red
I/R
Temp
ECG
Resp
SpO
2
Asic
Data Control
Control
Power
Cal Resistor
Pod Com
6
Amp
2
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