Stp Board - GE B30 Technical Reference Manual

B30 Patient Monitor
In diagnostic mode the upper frequency is 150 Hz and it is limited by software.

4.4.5 STP board

PATIENT AND SpO2 PROBE
SpO2 TRUNK CABLE
SpO2 CONNECTOR
SpO2 PROBE RECOGNITION & LED
DRIVE SELECTION MATRIX
SpO2 LED
DRIVE
RS 485
COMMUNICATION
ISOLATION
MODULE BUS CONNECTOR
Figure 20
Microprocessor unit
The CPU is a 16 bit H8/3052 single-chip microcomputer. It contains 128 kbytes of flash
memory and 4 kbytes of RAM. The clock frequency is 16 MHz.
High speed I/O is used to obtain a pulse control sequence necessary for pulse oximetry
measurement. Timing for the clock is from the oscillator.
1-36
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Document no 2044677-001
PATIENT AND TEMPERATURE SENSOR
TEMPERATURE CONNECTOR
INPUT PROTECTION CIRCUITRY
TEMPERATURE
MEASUREMENT
AMPLIFIER
SpO2
AMPLIFIER
POWER SUPPLY
ISOLATION
STP board block diagram
SENSOR SIGNAL
CURRENT
SOURCE
A/D CONVERSION
STP CPU
NV
MEMORY
STP BLOCK DIAGRAM
PATIENT AND INVASIVE CANNULA OR
CATHETER
FLUSHING KIT & INVASIVE PRESSURE
SENSOR WITH DOME
INV.PRESSURE CONNECTOR
INV: PRESSURE SENSOR SIGNAL
MEASURE MENT VOLTAGE
AMPLIFIER SOURCE