GE b30 Technical Reference Manual

E-PSM(P)W module introduction
1-31
Document no. 2044677-001
4.4.2 NIBP board
Figure 17 NIBP board functional block diagram
Signal processing
Two signals from the pressure transducers are amplified and sent to the A/D converter. After
the converter, digitized signals are sent to the microprocessor for data processing.
The NIBP board is controlled with an H8/3052 microprocessor at 16 MHz oscillator frequency.
Memory
The NIBP program memory (processor flash memory) size is 512k x 8. The processor has 4
kBytes RAM and there is also an external RAM memory, the size of which is 128k x 8. Variable
values of the NIBP measurement are stored into the external RAM. The EEPROM size is 512 x 8
and it is used to store the calibration values for the pressure transducers, the pulse valve
constants gained during measurements, the PC board identification, and the module serial
number.
Pressure
sensors
PSM_NIBP_blockdiag.vsd
Patient and NIBP cuff
NIBP cuff hose
NIBP connector with NIBP hose
id e ntifica tio n
Drivers for
pum p & valves
S a fe ty C P U
Main CPU
NIBP
control
keys
RS 485
com m unication
Power supply
+5 V and
synchronization signal
for ECG- and
STP-boards
M odule bus connector
NIBP pneum atics (m anifold)
NV memory
NV memory
for continued
patient data
Pump

GE b30 Specifications

General

Brand	GE
Model	b30
Category	Relays
Language	English