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System description
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Document no. 2044677-001
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System description
2.1 Introduction
The B30 monitors build up a freely configurable modular system. The architecture is designed
to enable different module combinations so that the user is able to get the desirable parameter
and feature set. This modular approach makes it possible to add new features when they are
needed.
2.2 Bus structure
The operation of B30 is based on two communication channels, the CPU bus and module bus.
All units, including the modules, receive power from the same power supply, which is an
integral part of the monitor frame.
Figure 2
General bus structure of B30 monitor
The CPU bus is a communication channel used only for internal data transfer. It is based on the
SC520 local bus and PCI bus. Data is transferred on this 32 bit wide bus using the CPU clock
frequency.
The module bus is for the parameter modules. The bus is based on the industry standard
RS-485, which uses a differential serial method to transfer data. This type of bus is robust and it
allows parameter modules to be inserted or removed while the power is on. The module bus
uses a 500 kbps data transfer rate.
The RS-485 type of serial communication supports so-called multidrop or party line
connections. This means that all parameter modules connected to the module bus use exactly
the same lines for communication. The advantage of this is that all bus connectors are
identical and the modules can be connected in any order and position.
PC
I B
us
UPI
SDRAM
Chipset
SC520
Processor
Patient
Monitor
M
odul
e Bus
SC520 Local Bus
Serial
Sound
SRAM
Memory
Code
Memory
Data
Memory
MiniPCI
Ethernet
Display
Controller
Summary of Contents for b30
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Page 13: ...1 Introduction...
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Page 61: ...2 Installation...
Page 69: ...3 Maintenance...
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Page 125: ...5 Service Menu...
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Page 159: ...6 Field replaceable unit...
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Page 166: ...B30 Patient Monitor 6 6 Document no 2044677 001 1 6 Frame for B30 Frame for B30...
Page 183: ...Frame disassembly 6 23 Document no 2044677 001...
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Page 191: ...7 Technical specification...
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Page 199: ...8 N F C REC Module...
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