S/5 Hemodynamic modules
Document No. 800 1008-2
19
2.2.7
STP board
Module bus connector or
connector to NIBP Board (NESTPR)
Patient connectors
Intensities
Serial device communication
Temp AD
Press AD
Pox AD
Module
bus
data
Reset
Module reset
Module data
Power for
module
Power for
Communication
Non volatile
memory
POX pre-
amplifier
INV
PRESS
measuring
unit
TEMP
measuring
unit
POX
gain
control
R
e
d
m
e
as
ur
in
g
RAM internal 2K
external 16K
EPROM 48K
RS communication
Opto
isolation
Power
isolation
section
Power
non-
isolation
section
AD-converter
- 8 chn
- 12 bit
IR
ed
m
ea
su
ri
ng
RS485 Driver
for module
reset
RS485 Driver
for data
Power
reset
P
ox
LE
Ds
dr
iver
Front panel
keys
Patient isolation
transformer
Isolation
µprocessor unit
Figure 8
STP board block diagram
Microprocessor unit
As processor, Intel’s 80C196KC-16 is used. There are external memories, an 8-bit data bus, a 16
MHz oscillator, an open collector reset, and a watchdog timer. Three A/D-converters within the
processor are used. The processor’s internal UART communicates with the CPU board.
High speed I/O is used to obtain pulse control sequence necessary for pulse oximetry
measurement. It gets its timing clock from the oscillator.
Summary of Contents for S/5 M-NE12STPR
Page 2: ......
Page 6: ...Datex Ohmeda S 5 monitors Document No 800 1008 2 iv This page intentionally left blank...
Page 83: ...APPENDIX A Service check form S 5 Hemodynamic modules Document No 800 1008 2 77 APPENDIX A...
Page 84: ...Datex Ohmeda S 5 monitors Document No 800 1008 2 78 This page intentionally left blank...
