bispectral index (BIS) and respiration mechanics (RM) of single adult, pediatric and neonatal
patients.
), oxygen (O2), anesthetic gas (AG), impedance cardiograph (ICG),
2
, pulse rate (PR),
2
The patient monitor also:
Provides audible and visual alarm indications in case of patient or equipment problems.
Enables displaying, reviewing, storing and transferring of real-time data.
Incorporates multiple input devices such as buttons, knob, touchscreen, keyboard and
mouse.
Interfaces a clinical information system or central monitoring system.
Enables program upgrade over the network.
2-1
2.2 System Connections
2.2.1 Mounting the Patient Monitor
The patient monitor can be mounted on a wall bracket or on a trolley support. The wall
bracket or trolley support can be ordered optionally. Each type of mounting bracket is
delivered with a complete set of mounting hardware and instructions. Refer to the
documentation delivered with the mounting hardware for instructions on assembling mounts.
CAUTION
z Use mounting brackets we supply or approve. If other compatible mounting
bracket is used, be sure it can be safely used on the patient monitor.
z The mounting bracket should be installed by our qualified service personnel, or
engineers who have adequate knowledge on it.
z If other mounting solution is used, the installation personnel and the customer
should verify if it can be safely used on the patient monitor, and the customer
assume the responsibility for any risk resulting from that.
2-2
2.2.2 Connectors for Peripheral Devices
On the back of the patient monitor you will find all connectors for peripheral devices.
1. AC Power Connector: used to connect an AC power source (100 to 240 VAC, 50/60Hz).
2. Equipotential Terminal: used to connect the equipotential terminal of other equipment,
eliminating potential difference between different pieces of equipment.
3. SMR Connector: It outputs a 12V DC, used to connect the SMR.
4. Video Output: It is a DVI-D connector used to connect a secondary display.
5. CIS Connector: It is a RJ45 connector used to connect a CIS.
6. Network Connector: It is a RJ45 connector used to connect an ethernet network or a PC.
7. Analog Output and Defibrillator Connector: It is a Micro-D connector used to output
analog signals and defibrillator synchronization signals.
8. Auxi Output Connector: It is a BNC connector used to output nurse call signals.
9. Secondary USB Connector: used to connect the mouse and keyboard of the secondary
display.
10. General USB Connector: used to connect any USB-compatible peripheral device.
2-3
2.3 Main Unit
The patient monitor consists of:
Input system: button board, knob, touchscreen, power switch and LED board
Output system: LCD panel, alarm LED board, recorder, speaker
Processing and communications system: main board, CIS assembly, integral module
rack
Power management system: battery, battery interface board, power module
Equipment interface system: USB interface board, DVI interface board, CF card
assembly and internal wireless network card.
Additionally, the patient monitor can also connect a satellite module rack (SMR), parameter
modules, mouse, keyboard, etc.
The following diagram illustrates the structure of the patient monitor.
2-4
2.3.1 Input System
Button board
The button board, located at the lower part of the monitor’s front panel, contains 6 keys and
provides connections for the following components to the main board:
Knob
Power switch & LED board
Touchscreen control board
Backlight board
Alarm LED board
The following diagram shows the button board connections.
Knob
The knob can be pressed, or rotated both clockwise and counter-clockwise. It is connected
with the button board.
Touchscreen
The touchscreen enables touch operations and can be calibrated. It is connected with the
touchscreen control board and main board.
Power switch & LED Board
The power switch & LED board controls the power supply for the main unit. It has three
LEDs, which respectively indicate the AC power status, battery status and monitor power
on/off status. It is connected with the button board.
2-5
2.3.2 Output System
LCD
The patient monitor adopts a high-resolution LCD. The LCD is connected with the main
board. Signals and power supply of the backlight board are transferred by the button board.
Alarm Lamp
The patient monitor has two alarm lamps: alarm lamp and technical alarm lamp. Alarm lamp
lights either red or yellow whereas technical alarm lamp lights blue only. The signals from
the alarm lamps are transferred by the button board and are controlled directly by the main
board.
Recorder
The recorder receives data coming form the main board and then sends them to the thermal
printhead for printing. The recorder has a hardkey (starting/stopping recordings) and a green
LED on its front. It is connected with the main board.
The following diagram shows its operating principle.
2-6
Module Description
Power interface Introduces a DC from the main board.
Power module
CPU Control the communications between modules.
Signal interface
Motor drive circuit
Button & LED
board
Converts the input power into voltages that fit each module and then
forwards them to each module.
Control the communications between the main board and the
recorder CPU.
Receives the control signals from the CPU and then forwards them to
the step engines.
Includes one button and one LED which are directly controlled by
the CPU.
Speaker
The speaker provides sound for alarms, key strokes, heart beats and pulse, and allows PITCH
TONE and multi-level tone modulation. It is connected with the main board and is directly
driven by the main board.
2.3.3 Processing and Communications System
Main Board
The main board is the heart of the patient monitor. It implements a series of tasks including
input & output control, data storage and processing, display processing, system control,
communication management, printing management and alarming, etc.
The main board comprises the CPU board and mother board. The following diagram shows
interfaces to other components.
2-7
The CPU board is an essential CPU system containing the CPU, FLASH, memory, realtime
clock, EEPROM, etc. It interfaces to the mother board only, which then provides interfaces to
all other external devices.
The mother board is in charge of connections and communications with other components
and provides the following interfaces:
LCD port: connects a built-in display.
Video output+network+IO+IIC: connects the digital video interface board.
USB×2+UART: connects the USB interface board.
Button board port: connects the button board.
Integral module rack port: connects integral module rack communication board.
Fan port: connects the fan.
2-8
Speaker port: connects the speaker.
Power module port: connects the power module.
CIS port: located at the back of the mother board for connecting the CIS components.
CF port: connects the CF card assembly.
Recorder port: connects the recorder.
Internal wireless network card port: connects the internal wireless network card
Integral Module Rack
The patient monitor has two kinds of integral module rack: 2-slot and 5-slot. The control
board includes a NIOS II FPGA. It implements protocol conversion and infrared
communication between the main unit and the parameter modules.
The module rack communication board can be a 2-slot type or a 3-slot type. The 3-slot
communication board communicates the main board directly. The 2-slot communication
board is connected with and is controlled by the 3-slot communication board. The 3-slot
communication board has the function of communication control. The 2-slot communication
board consists of the infrared circuit and module power circuit. The RS422 drive circuit is
located on the 3-slot communication board.
2.3.4 Power Management System
Battery
The patient monitor uses two chargeable lithium-ion batteries (11.1 V, 4500 mAh). The
battery compartment door is located at the bottom of the patient monitor. The battery power
is introduced to the power module via the battery interface board, and then processed and
distributed to each component by the power module.
NOTE
z Two batteries must be used simultaneously when the patient monitor operates on
battery power. Otherwise, it may cause power supply protection.
Battery Interface Board
The battery interface board connects batteries to the power module, enabling charging and
discharging between the batteries and the power board.
2-9
Power Module
The power module is located at the back of the patient monitor. The main part of the power
module is the power board, which contains 4 PCBs: charging & power management board,
voltage drop DC inverter, voltage rise and drop DC inverter, and voltage drop 5 V CIS power
board.
The power module transforms the input power into DC and then forwards them to each
component of the patient monitor. The input power comes from either the batteries or an AC
source. The patient monitor will run power from the AC source whenever an AC source is
available. If the AC source becomes unavailable, the patient monitor will automatically
switch to the battery power. This does not affect the monitor’s operating status.
Power module has an AC input socket at its backside, and a socket at its front provides 4
connections to the batteries, main board, CIS components and USB interface board
respectively. The power module protects itself and the patient monitor by switching off AC
input or DC output in case of overcurrent, short circuit and overvoltage.The power module
provides 4 DC outputs:
Outputs Description
+3.3 V
+5.0 V
+5.0 V CIS Goes to the CIS assembly.
+12 V
The systematic principle diagram of the power module is as follows:
Goes to the LCD, mother board, CPU board, DVI interface board and
integral module rack.
Goes to the DVI interface board, recorder, CF storage card board and
USB interface board.
Goes to the recorder, LCD inverter, integral module rack, parameter
modules and USB interface board.
2-10
The following diagram shows the pins of the power module socket (excluding the pins of the
battery power socket. On power board, pin 1 has a triangle symbol):
Pin ID Marking Description Cable
color
2, 4, 6, 7,
13, 15, 17
GND The output grounding terminal of the power board. Black
8 RXD Receives serial communications (the main board sends). Purple
9 TXD Sends serial communications (the main board receives). Brown
Power on/off control signal. It is a TTL pulse signal
inputted from the back board. Every time when the power
10 PCON
on/off switch is pressed (pulse of falling edge), a switch
between power “on” and “off” happens. The pulse
Blue
duration is no less than 0.1 s for power-on and no less
than 2 s for power off.
Backlight on/off control signal. The main board sends a
backlight on/off control signal to the power board through
11 LCD-EN
the serial interface. The power board processes the
Green
received signal and then outputs a high or low level
depending on the received signal.
12, 1 12 V
14, 3 5 V CIS
The positive end of the 12 V DC coming from the power
board.
The positive end of the 5 V CIS coming from the power
board.
Ye ll o w
Purple
16, 5 5 V
18, 19 3.3 V
The positive end of the 5 V DC coming from the power
board.
The positive end of the 3.3 V DC coming from the power
board.
Red
Orange
20 LED- AC AC power status indication signal White
21 LED- BAT Battery status indication signal. Grey
22 LCD-BR Backlight brightness control voltage. Brown
2-11
2.3.5 Equipment Interface System
USB Interface Board
The USB interface board is compatible with such USB interfaces as USB2.0, USB1.1 and
USB1.0. It is connected with the main board and the power module. It receives two USB
differential signals coming from the main board and then distributes them to ten USB
interfaces via two ISP1521 chips. The UART signal output by the main board is converted
into RS422 signal by the USB interface board. The USB interface board receives 5 VDC and
12 VDC inputs from the power module, of which the 5 VDC goes to the USB interface board
and the 12 VDC outputted to the SMR connector through a fuse.
2-12
DVI Interface Board
The DVI interface board is connected with the mother board and the CIS mother board. The
following diagram shows its interfaces to other components.
Interface Description
CIS Connector Connects the CIS mother board.
BNC connector Outputs nurse call signals.
Micro-D connector Outputs analog signals and defibrillator synchronization signals.
RJ 45 connector
(network)
RJ 45 connector (CIS) It is a standard RJ45 connector for connecting a CIS network.
DVI-D connector Connects a secondary display.
It is a standard RJ45 connector, providing 10/100 BASE-TX Ethernet
communications channels. It connects an Ethernet network or a PC.
CF Card assembly
The CF assembly serves the non-volatile CF storage card which is used for data storage and
transfer. It is connected with the mother board.
Internal wireless network card
The internal wireless network card connects with the mother board. User can set network
type as LAN or WLAN through user interface and can set the internal wireless network card
through PC.
2-13
2.4 Parameter Module
Each parameter module consists of the module infrared communication board, module power
board, module button board, parameter board, etc.
2.4.1 Module Infrared Communication Board
The module infrared communication board allows a short delay when powering up the
module and adopts FPGA to enable infrared communications between the module and the
module rack. An ID is integrated into the module infrared communication board. When a
module is inserted in the module rack, the ID is automatically sent to the module rack.
2.4.2 Module Power Board
Some modules have no power board. There are two kinds of module power board:
1. Isolated power board: converts the 12 V DC into a 12 V isolated DC and a 5 V isolated
DC.
2. Non-isolated power board: converts the 12 V DC into a 5 V DC.
2.4.3 Parameter Board
The parameter board is a parameter measurement component, which is the most important
component of the parameter module.
2-14
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