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300G CONTEC ECG - 3 channel with 12-leads monitor
USER MANUAL
CONTEC MEDICAL SYSTEMS CO., LTD
No. 112 Qinhuang West Street, Economic & Technical Development Zone,
Qinhuangdao, Hebei Province, PEOPLE'S REPUBLIC OF CHINA
Shanghai International Holding Corp. GmbH (Europe)
Eiffestrasse 80, 20537, Hamburg, Germany
33221
ATTENTION: The operators must carefully read and
completely understand the present manual before using the
product.
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Statement
Our company owns all rights to this unpublished work and intends to maintain this work as
confidential. We may also seek to maintain this work as an unpublished copyright. This
publication is to be used solely for the purpose of reference, operation, maintenance, or repair
of our equipment. No part of this can be disseminated for other purposes.
In the event of inadvertent or deliberate publication, our company intends to enforce its rights to
this work under copyright laws as a published work. Those having access to this work may not
copy, use, or disclose the information in this work unless expressly authorized by us to do so.
All information contained in this publication is believed to be correct. Our company shall not be
liable for consequential damages in connection with the furnishing, performance, or use of this
material. This publication may refer to information and protected by copyrights or patents and
does not convey any license under the patent rights of our company, nor the rights of others.
Our company does not assume any liability for arising out of any infringements of patents or
other rights of the third parties.
Content of this manual is subject to change without prior notice.
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Contents
Chapter 1 Main Technical Specification ..................................................................................... 1
Chapter 2 Security Notice .......................................................................................................... 3
Chapter 3 Maintenance Regulation ........................................................................................... 5
Chapter 4 Instrument Characteristics ........................................................................................ 6
Chapter 5 ECG300G Panel Sketch Map ................................................................................... 8
5.1 The Sketch Map and Components Name ....................................................................... 8
5.2 Key Definition .................................................................................................................. 9
5.3 Indicator Definition ......................................................................................................... 10
Chapter 6 Attention before Operating ...................................................................................... 11
Chapter 7 Preparation Work before Instrumentation ............................................................... 12
Chapter 8 Precaution during Operation ................................................................................... 13
Chapter 9 Instruction of Recording Paper ............................................................................... 14
Chapter 10 Electrode Placement ............................................................................................. 15
10.1 Chest Electrode ........................................................................................................... 15
10.2 Limb Electrode ............................................................................................................. 15
10.3 Check-List for Electrode Connection and ECG cable ................................................. 16
Chapter 11 Grounding and Power Connection of Instrument .................................................. 17
Chapter 12 Precaution for Battery Operation .......................................................................... 18
Chapter 13 Control Panel and Key Instruction ........................................................................ 19
13.1 Main Interface .............................................................................................................. 19
13.2 Sampling Interface ...................................................................................................... 20
13.3 Inputing Archive Information ........................................................................................ 22
13.4 History Archive Management ...................................................................................... 23
13.5 Archive Querying. ........................................................................................................ 24
13.6 Archive Review ............................................................................................................ 25
13.7 Date and Time Settings ............................................................................................... 26
13.8 System Settings........................................................................................................... 26
13.9 Sampling Settings ....................................................................................................... 27
13.10 Analysing Parameter Settings. .................................................................................. 28
13.11 Print Settings ............................................................................................................. 28
13.12 Checking Electrodes Placement ............................................................................... 29
13.13 About Us .................................................................................................................... 30
Chapter 14 Troubleshooting ..................................................................................................... 31
14.1 Turn off Automatically .................................................................................................. 31
14.2 AC Interference............................................................................................................ 31
14.3 EMG Interference ........................................................................................................ 31
14.4 Baseline Drift ............................................................................................................... 32
14.5 Troubleshooting List .................................................................................................... 32
Chapter 15 Maintenance and Preservation ............................................................................. 33
Appendix ..................................................................................................................................... 34
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Chapter 1 Main Technical Specification
1.1 Normal work environment
Operation
a) Environment temperature: +5℃ ~ +35℃
b) Relative humidity: ≤80%
c) Power supply: AC:100-240V, 50/60Hz
DC: 7.4V, 3700 mAh rechargeable lithium battery
d) Atmospheric pressure: 860hPa~1060hPa
Store and Transportation
a) Environment temperature: -40℃~55℃
b) Relative humidity: ≤95%
c) Atmospheric pressure: 500hPa~1060hPa
1.2 Input way: Floating and defibrillation protection
1.3 Lead: Standard 12 leads
1.4 Patient leak current: <10µA
1.5 Input impedance: ≥50MΩ
1.6 Frequency response: 0.05Hz~150Hz(-3dB~dB)
1.7 Time constant: Time constant>3.2s
1.8 CMRR: >60dB, >100dB( With AC filter)
1.9 EMG interference filter: 25/35Hz(-3dB)
1.10 Recording way: Thermal printing system
1.11 Specification of recording paper: 80mm(W)*20m(L) High-speed thermal paper
1.12 Paper speed:
Auto-record:25mm/s,50mm/s,error: ±5%
Rhythm record:25mm/s,50mm/s,error: ±5%
Manual-record:5mm/s,6.25mm/s,10mm/s,12.5mm/s,25mm/s,50mm/s,error:±5%
1.13 Sensitivity choice: 2.5/5/10/20/40mm/mV, error:±5%.Standard sensitivity
is10mm/mV±0.2mm/mV
1.14 Auto-record: record following the record format and auto-mode, auto leads-changing, auto
measurement and analyse.
1.15 Rhythm record: record following the rhythm format and rhythm mode, auto measurement
and analyse.
1.16 Manual record: record following the record format, manual leads-changing.
1.17 Measurement parameters: HR, P-R interval, P Duration, QRS Duration, T Duration, Q-T
interval, Q-Tc, P Axis, QRS Axis, T Axis, R(V5), S(V1), R(V5)+S(V1)
1.18 Product safety type: Class I, Type CF, there is defibrillation and pacing protection circuit.
1.19 Enduring polarization voltage:±300mV
1.20 Noise level: ≤15µVp-p
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1.21 Fuse Specification: 2 pcs φ5*20mm AC time lag: T1.6AL250V
1.22 Size: 315mm(L)*215mm(W)*77mm(H)
1.23 Net Weight: 1.6Kg
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Chapter 2 Security Notice
2.1 The power supply should be grounded properly before operation.
2.2 If the ground cable is not integrated, the device must be run with built-in power supply.
2.3 Please pull out power supply plug before changing the fuse.
2.4 This device must be operated and preserved by professional personnel.
2.5 The operator must read this user manual carefully before operation, and operate the device
according to operation regulation strictly.
2.6 The design of this device has mature consideration of security, but operator should never
neglect attention to device state and patient’s situation.
2.7 Please turn off the instrument and pull out power supply plug before clean and disinfection.
2.8 Please don’t operate this device in environment which contains flammable anaesthesia gas.
2.9 If this device is used with cardiac defibrillator or other electric stimulate devices at the same
time,
please choose Ag/AgCl chloride chest electrode and ECG lead with prevent-fibrillation function.
To
prevent the metal electrode burn patients' skin, the disposable chest electrode should be used if
the
defibrillation time is over 55 seconds. It is better that do not use this device with other electric
stimulate devices at the same time. If it must be used at the same time, there must be
professional technician guide on the scene.
2.10 When other devices are connected with this ECG instrument, they must be Type I devices
which accord with IEC60601-1. Because the total amount of leakage current may hurt patients,
the monitoring of leakage current is carried out and taken charge by connect devices.
2.11 Following descriptions concern special attentions in ECG measurement and interpretation.
(1) P wave and Q wave are not always reliable in the archive of intensive muscle artifact or AC
interference. So are the ST segment and T wave.
(2) Winding and unclear ends of S wave and T wave may lead to tolerance in measurement.
(3) In archive R wave is left out due to the low voltage of QRS wave or any leads falling off, the
measured heart rate may deviate greatly from the correct one.
(4) Axis calculation and identify the QRS borderline are not always reliable in the archive of the
low voltage of QRS wave.
(5) Occasionally, frequent ventricular premature complexes may be identified as dominant
beat.
(6) Merging of versatile arrhythmia may result in untrustworthy measurement because of the
difficulty in distinguishing P wave in such situation.
(7) ECG300G is designed to carry on ECG trace interpretation immediately after the
measurement. It is this interpretation that does not give report on all possible heart
problems and may sometimes not comply with the doctor’s diagnosis. Therefore, the final
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conclusion concerning each patient is up to the doctor basing on patient symptom, the unit
ECG300G ’s interpretation and other examination.
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Chapter 3 Maintenance Regulation
3.1 Under the condition of normal use according to the user manual and operation notice, if this
instrument has any problem, please contact with our customer service department. Our
company has the sales record and customer archives for each instrument. The customer has
one year's warranty service from the beginning of shipping date according to the below time
and condition. To supply all-around and fast maintenance service to our customers, please mail
the maintenance card to us in time.
3.2 Our company may adopt the ways of instruction, mailing to company by courier, visiting
customers' company, etc. to carry out the maintenance promise.
3.3 Even in the period of free maintenance, we charge for reparation in the following archives:
1) Faults or damnification caused by misuse because not operate according to user manual
and operation notice.
2) Faults or damnification caused by dropping accidently when users move after purchasing.
3) Faults or damnification caused by preparation, reconstruction, decomposition, etc. outside
of our company.
4) Faults or damnification caused by natural disasters such as fire, flood, earthquake, etc.
5) Faults or damnification caused by unapt thermal recording paper.
3.4 The free maintenance period for spare parts and fray parts is half a year. Power cable,
recording paper, operation manual and packing material are excluded.
3.5 Our company is not responsible for the faults of other connecting instruments cause by the
faults of this device directly or indirectly.
3.6 The maintenance service is only efficient in Chinese Mainland.
3.7 The free maintenance service will be canceled if we find the protection label has been
destroyed.
3.8 For charge maintenance beyond the warranty period, our company advise to continue to
use "Maintenance contract regulation". Please consult our customer service department for
specific situation.
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Chapter 4 Instrument Characteristics
4.1 Recording system: Thermal-array (8 dots/mm),you should not adjust anything Frequency
Response is up to 150Hz.
4.2 The device can record real time clear and exact three channel ECG waveform and remark
continually. The remark includes: lead sign, sensitivity, paper speed, filter state, etc.
4.3 Under automatic mode, just press the button once, it starts record procedure, which can
enhance your
work efficiency.
4.4 Soft keyboard control, more convenient for operation. TFT screen shows the working status,
more clear for observation.
4.5 Safety Class: Class I, Type CF.
4.6 The power supply includes both AC/DC. This device includes built-in lithium rechargeable
battery,
4.7 This instrument can record 150 pieces of ECG waveform and print 90 minutes continually
under the best DC state.
4.8 This instrument can store more than 1000 pieces patient’s data, more convenient for data
review and statistic.
4.9 The figure of whole device is elegant and gliding.
4.10 According to defense degree of deleterious fluid, this device belongs to common device.
4.11 According to the safe degree used under the condition with flammable anaesthesia gas
mixed with
air (or oxygen, nitrous oxide), this device belongs to the device which can’t be used under the
condition
with flammable anaesthesia gas mixed with air(or oxygen, nitrous oxide).
4.12 Digital signal processor for effective inhibition of baseline drift, interference, and the like.
4.13 The instrument has function with regular auto-measurement of ECG waveform parameter,
auto-analyze and auto-diagnostic, it will help to reduce doctor’s burden and improve working
efficiency.
4.14 According to the working mode class, this device belongs to non-continuous working
device.
4.15 Explanation of some symbols in this device:
～AC AC work mode
OFF Power supply is disconnected
ON Power supply is connected
Equipotential point
Places need to be noticed, please refer to user manual
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Device type is CF, which has defibrillation protection function
USB connector
PATIENT Lead connector
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Chapter 5 ECG300G Panel Sketch Map
5.1 The Sketch Map and Components Name
Front view
Side view
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Rear view
Bottom view
5.2 Key Definition
Function key: on/off
Function key: plus adjust
Function key: paper speed adjust
Function key: filter function select
Function key: menu
Function key: switch printing mode
Function key:1mV marker
Fuse Holder
Power Switch Power Plug Equipotential Terminal
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Function key: print
Function key: enter
Function key: upwards
Function key: downwards
Function key: leftwards
Function key: rightwards
5.3 Indicator Definition
The indicator turns green when there is AC power supply, and when the indicator turns
green and red same time it is being recharged.
Indicator for instrument when power on.
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Chapter 6 Attention before Operating
6.1 You are required to read this operation manual carefully before operating so as to ensure
taking safe and effective operation of the instrument.
6.2 Installation and maintenance of the instrument should be carried out as the following
1) There should be no high voltage cable, X radial instrument, ultrasound instrument and
electrotherapeutics instrument, etc. around the ECG instrument.
2) Do not use or reserve the instrument in the place where the air pressure is too high,
temperature and humidity are over the common standard, the ventilation is not good, dust
is too much, there is gas containing salt and alkali and chemical medicine.
6.3 The instrument should be put on flat place. Take and put it lightly when move it. Avoid too
strong vibration and shock.
6.4 AC frequency and voltage value should accord with requirement ,and has enough current
capacity.
6.5 Please put the device at the place where is easy to be grounded. Do not connect the
patients and the
patients connecting cables with other conductors including ground or beds which can be
conducted well
with ground.
6.6 Please ensure the device operated in the range of environment temperature: 5℃~35℃. If
the device is reserved in higher temperature or lower temperature environments, please wait for
about 10 minutes before using it, to ensure normal operation of the device.
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Chapter 7 Preparation Work before Instrumentation
7.1 Check that the instrument properly grounded and that cable connections safe or not.
7.2 Make sure all electrodes directly connected with patient are properly and firm.
7.3 Check the output voltage when choose the DC UPS.
7.4 Smear the gel separately, avoiding the short circuit caused by the chest electrode touch one
another.
7.5 AC power cable can not be enlaced with ECG cable.
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Chapter 8 Precaution during Operation
8.1 Pay attention to the patient and instrument condition constantly.
8.2 Patient and instrument can only be connected ECG cables.
8.3 Keep close observation of the patient and instrument, to make sure they are not moved
during operation.
8.4 Turn off the instrument after using.
8.5 Turn off the power, and remove the ECG cables slightly without force.
8.6 Properly keep the instrument and spare parts for operation next time.
8.7 Paper Loading
1) Dimension of the high-speed thermal Recording paper used in this instrument is:
80mm(W)*20m(L)
2) Open the cover of paper cabinet, take out the paper axis and install recording paper
according to the figure into the proper position inside.
3) Close the cover of paper cabinet. It's recommended to leave 2 cm of recording paper
outside.
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Chapter 9 Instruction of Recording Paper
9.1 Message "No Paper." will be displayed on the LCD whenever recording paper is run out.
9.2 Specified paper of high sensitivity is recommended for high-quality prints. Other kind of
paper may not render a clear permanent trace and may damage the printing mechanism.
Please consult distributor or manufacture for detail of how to purchase the paper.
9.3 Failure of the recording paper might be affected by high temperature, bad humidity or direct
sunlight. For long storage, the recording paper should be placed in dry, dark and cool area.
9.4 Substance may caused stain of the recording paper:
Gel, glue, and wet diazo compound paper including their organic solvent.
9.5 Substance may caused the waves fade away:
File folders made of soft PVC material, plastic etc.; eraser and magnetic tape contains
plasticizer; fluorescence, and stamp-pad ink.
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Chapter 10 Electrode Placement
Advice: Set the chest electrode first, then the limb electrode.
10.1 Chest Electrode
Attach the chest electrodes to the locations as following:
V1: Fourth inter-costal space at right border of sternum.
V2: Fourth inter-costal space at left border of sternum.
V3: Midway between V2 and V4.
V4: Fifth inter-costal space at left mid-clavicular line.
V5: Left anterior axillary line at the horizontal lever of V4.
V6: Left mid-axillary line at the horizontal lever of V4.
Clean the skin where chest electrodes are to be attached with alcohol, then apply ECG cream
to here around 25mm in diameter and to the edge of chest electrodes, and press and attach the
electrodes to the positions from V1-V6.
Note:Keep in mind that the electrodes’ coming into contact with each other or cream’s
overlap from one position to another is not allowed.
10.2 Limb Electrode
Electrodes should be placed on the soft skin of hands and feet. Clean all the limb electrodes
and the positions around to which limb electrodes are to be attached with alcohol before
applying ECG cream to them, then firmly attach the electrodes to the positions.
Caution: Screw tightly the knob of ECG cable's plug after it inserted to the instrument.
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10.3 Check-List for Electrode Connection and ECG cable
Electrode Location
Electrode Code
Socket Number
Right Alarm
RA/R
9
Left Alarm
LA/L
l0
Left Leg
LL/F
11
Right Leg
RL/N
14
Chest 1
Vl/Cl
12
Chest 2
V2/C2
1
Chest 3
V3/C3
2
Chest 4
V4/C4
3
Chest 5
V5/C5
4
Chest 6
V6/C6
5
Note:
1. Please apply leads in the close state.
2. Please check the electrode contact the skin well or not, if the ECG didn't appeare for
a long time, then press the start key which will close in several milliseconds several
times.
3. please apply conductive jelly when place electrode.
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Chapter 11 Grounding and Power Connection of Instrument
Make sure the status of the instrument is power off, and then make the instrument be properly
grounded through a 3-prong outlet. When the outlet, a grounding cable may be utilized to
connect the grounding terminal of the instrument. Do not use other pipeline. Properly grounding
could guarantee the safety and prevent from the interference of AC power and electromagnetic
wave.
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Chapter 12 Precaution for Battery Operation
12.1 This instrument is designed with the built-in sealed maintenance-free rechargeable lithium
battery,and has automatic charge and discharge monitoring system. The instrument recharges
the battery automatically when connect to AC power supply. The LCD screen will show the
current power state at the top right corner when the instrument turns on(see 12.4). It needs
about 4 hours for battery charge after discharge absolutely.
12.2 The device can continuously print 90 minutes and work 4 hours without printing after the
battery fully charged. When it working, the LCD screen displays the signal of the battery
status in 5 degree. When the power of battery is too low to operate, the instrument will turn
off automatically to avoid damage to the battery.
12.3 The battery should be recharged in time after exhausted using. For long storage, the
battery is to be recharged every 3 months. The battery life can be extended by doing so.
12.4 Seven status of the battery power displayed on LCD as following:
Note: When charging the battery icon shift from f to c.
12.5 When the battery can not be recharged or works no more than 10 minutes after fully
charged, please change the battery.
Attention!!!
Do not directly connect both "+" and "-" polars of battery with wire, otherwise it might cause
fire hazard.
Possible explosion hazard if it kept nearby the ablaze area.
You should not open or disassemble the battery.
No.
Mark
Description
a
Unknown status, normally displayed while the instrument being turned on within 1
minute
b Using AC power
c Using battery, and full power
d Using battery, volume : 3/4
e Using battery, volume: 1/2
f Using battery, volume : 1/4
g
Using battery, but lower power, suggest to recharge the battery or use AC power
supply
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Chapter 13 Control Panel and Key Instruction
13.1 Main Interface
Show as following:
Power status:Please refer to 12.4
Keypad:
Enter sampling interface. when the instrument is powered on, it will automatically
start this operation.
Enter Archive management interface, query , modify or delete archive information
See sketch map for electrodes placement
Date and time settings
System settings
Sampling settings
Analysis parameters settings. settings for each parameter using for automatic
analysis
Disk storage usage
Current patient file account
Power status
Function buttons
Current time
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Printing settings, set printing mode, style and content.
About us, display information about our company and software version
13.2 Sampling Interface
Select on the main menu or choose shortcut key to enter sampling interface.
Attention: Because of the "setting", Patient information may be input before sampling
signal, rest with the option : inputting archive information.
It displays multiform lead waves, including 3 Leads per screen, 6 Leads per screen, 12 Leads
per screen.
Sampling interface of 12 leads style can be displayed as following:
Stop Sampling: Press key on the keypad to stop sampling and return to main
interface.
Lead Change: You can press key / to show the other leads. The leads use by manual
print.
Switch Lead Style: Press key / to switch the lead style among 3 leads per screen, 6
leads per screen and 12 leads per screen.
Lead Off: Under Demo mode, it displays "DEMO ECG". Under sampling mode, it displays
information of lead off.
Change Recording Style: Press this key to change recording mode among auto 4*3,
auto 3*4 +1, auto 3*4, auto 2*6 +1, auto 2*6, auto3-2+1, auto3-2,rhythm 4, rhythm 3, rhythm 2
and manual mode.
Current Wave
Printing style
Lead off
Status
Speed
Filter
Current heart rate
Gain
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Adjust Gain (Sensitivity Selection): Sensitivity is to be selected by pressing key . User
can choose 2.5mm/mV, 5mm/mV, 10mm/mV, 20mm/mV or 40mm/mV.
Adjust the speed: Use the key of speed adjusting to change the speed :5mm/s,
6.25mm/s, 10mm/s, 12.5mm/s, 25mm/s, 50mm/s. Auto-record and Rhythm record can not
support 5mm/s, 6.25mm/s, 10mm/s, 12.5mm/s when printing.
Shift the filter: Use the key of filter selection to shift between
non-filter,AC,EMG,DFT,AC+EMG,AC+DFT,EMG+DFT,AC+EMG+DFT.
Display the calibration: Use the key of "1 mV" to display the marker of 1 mV on the
screen.
Print/ finish the print: Use the key of "print" on the keyboard, then can start or stop a
printing operation.
Automatic mode: After starting printing, the system will print and store synchronic twelve leads
waveform automatically. The length decided by the setting item in the printing option. And also
according to the setting item, print out the data and result which analysed automatically and the
system can finish the printing automatically.
Manual mode: After starting printing, the user should print out the real waveform by shifting the
group of leads. That means the ECG waveform printing under the manual mode is
non-synchronic, and cannot be saved. And the user should end the printing by press the key
again.
During printing, the printing state includes:
Display content
Remark
Process…
In the process of printing
Waiting…
In the process of ending printing
No Paper.
Lack of paper, the user should restart the operation after filling
papers.
Print Timeout.
The connection between system and printing sub-system broke.
ECG Timeout
The connection between system and sampling sub-system broke.
Low Power
Low power, the system can not start the print work.
Note:Please print after the ECG was displayed in the screen .
On this interface, press the button on key board, the system will enter the shortcut
setting interface:
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Select【OK】button,the system will apply new settings and return to sampling interface. Select
【Cancel】, the system will return to sampling interface without apply the new settings.
The each function of option is shown in the following table.
Item
Optional content
Remark
AC Filter
[ON]/[OFF]
Setting of using AC Filter or not
EMG Filter
[ON]/[OFF]
Setting of using EMG Filter or not
DFT Filter
[ON]/[OFF]
Setting of using DFT Filter or not
Rhythm Lead
Any one of 12 leads
Setting the rhythm lead to print ECG in
rhythm print mode.
Show Style
[3 Leads]/[6Leads]/[12Leads]
Setting of wave show style.
Show Gain
[2.5mm/mV]/[[5mm/mV]/[10mm/mV]
/[20mm/mV]/[40mm/mV]
Setting of wave show gain.
Show Speed
[5mm/s]/[6.25mm/s]/[10mm/s]/[12.5
mm/s]/[25mm/s]/[50mm/s]
Setting of wave show speed.
Auto-record and Rhythm record cannot
support
5mm/s,6.25mm/s,10mm/s,12.5mm/s
when printing.
13.3 Inputing Archive Information
According to the different setting items(refer to 13.8), user can input the patient archive before
or after sampling, and also can input blank archive. The input box as following:
Choose any input-box, as pressing key, the "soft keyboard" will pop out as following.
Archive information
Function buttons
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The function of 【Caps】button on "soft keyboard" is to change the number key and lower
archive to punctuation and upper archive. Press 【OK】 will confirm input and exit this interface.
There maybe a limit of character according to the content input. And then the limited
character will be gray and unavailable, as following:
13.4 History Archive Management
In the main interface, select the button of , then you can enter the archive management
interface, as following.
This interface shows all the storage archive. The users can use the searching function (refer to
13.5 archive querying) to select the required archive; and edit any archive by modifying or
deleting operation; besides the user can review the saved archive information. (refer to 13.6
archive review).
Current selected archive
Archive list
Pages roll buttons
Exit this menu
Delete the selected archive
Display review dialogue box
Display advanced menu
Current archive sum / Total archive sum
Available
Unavailable
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: Go to the first page of archive list.
: Go to the last page of archive list.
: Go to the previous page of archive list.
: Go to the next page of archive list.
13.5 Archive Querying.
Choose 【Adv-Opr】 in the archive management ,then it shows as following:
Select 【Query】 can start a archive Query dialogue box as following.
Input searching condition, and select 【Select】 button, and the user can get expected result.
The function of 【Clear】 is to clear the query condition input.
【Cond. and】 and 【Cond. or】indicate the matching mode of searching condition, the user can
select either. If select 【Cond. and】, the searching result will fit all the conditions input
simultaneity; if select 【Cond. or】, the searching result will display the ones which fit any of the
conditions.
Suggestion: On the conditions of large number of patients archive, should input the confirmed
searching conditions, select 【Cond. and】, can find out the certain patient archive immediately.
matching mode
query condition
clear the condition input
Close dialog box
Query by current condition
Advanced menu
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13.6 Archive Review
On Archive management interface, after moving focus on the right patient archive being
reviewed, select 【Review】can start the following dialogue box which shows the patients
archive information, users can modify here, select 【 Save】, the change, which is not
reversible ,will be saved.
Make sure the correct selection, select 【Review】 button, and can go into the following review
interface which is similar to sampling interface.
In this interface, the user can adjust the time segment of the display waveform by and ,
and also the speed and gain.( refer to 13.2 sampling interface). In this state , the user can print
by pressing . Pressing , system will enter the shortcut settings interfaces
following:
Sampling date
Power status
Sampling time length
Review time point
Total sample time
Speed
Gain
Print mode
state
Archive information
Return to last menu
Review current archive
Save archive information
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Select 【OK】button, the system will apply the new settings and return to review interface.Select
【Cancel】 button, the system will return to review interface without applying the new settings.
Each function of the option is as following:
Item
Optional content
Remark
Print Mode
[Auto 3*4]/[Auto 2*6]/[Auto 4*3] and
any mode suit current archive
Setting of printing mode.
Rhythm
Lead
Anyone of 12 leads
Setting the rhythm lead to print ECG in
rhythm print mode.
Show Style
[3 Leads]/[6 Leads]/[12 Leads]
Setting of wave show style.
Show Gain
[2.5mm/mV]/[5mm/mV]/[10mm/mV]/
[20mm/mV]/[40mm/mV]
Setting of wave show gain.
Show
Speed
[5mm/s]/[6.25mm/s]/[10mm/s]/
[12.5mm/s]/[25mm/s]/[50mm/s]
Setting of wave show speed.Auto-record
and Rhythm record can not support
5mm/s , 6.25mm/s, 10mm/s, 12.5mm/s
when printing.
13.7 Date and Time Settings
In the main interface, select button, can start the following dialogue box showing the
date and time settings.
In this interface, the users can select and key to shift all the items, using and
to adjust the options content.
13.8 System Settings
In the main interface, select button, can start the following system settings dialogue box.
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In this, select the button【Default】, the system settings will back to the default.
The each function of option is as following:
Item
Optional content
Remark
Screen
saver
None/30Seconds/1Minute/
2Minutes/5Minutes/10Minut
es
The screen saver will be active after the selected
time without any operation. "None" means that
this function will not be used.
Back-Light
30Seconds/1Minute/2Minut
es/5Minutes/10Minutes/
Always On
The back-light will be turned off after the selected
time."Always On" means that the back-light will
be turned off never.
Auto off
1Minute/3Minutes/5Minutes
/
10Minutes/15Minutes/
30Minutes/60Minutes/None
The system will be shut down if no operation after
the selected time. None means the fuction is not
effective.
Low Power
None/Only Once /Always
The system will take which alarm scheme when
the power of battery is going to be used up.
Info Input
Before/After/None
Set up the time when inputting archive
information.
Filter Freq
[50Hz/35Hz]/[50Hz/25Hz]/
[60Hz/25Hz]/[60Hz/35Hz]
Set up the parameter of AC Filter and EMG Filter.
Language
[English]/[Chinese], etc.
Set up the default system language.
K-B Sound
On/Off
When pressing the key on keyboard, the
instrument will make a sound if "On" is
selected.otherwise it will no sound.
Demo Mode
On/Off
The system will run under demo version, if "On"
is selected. otherwise it will run under normal
version.
13.9 Sampling Settings
Select in the main interface, can start the following sampling setting dialogue box.
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Select the button【Default】, the sampling settings will back to the default.
The each function of option is as following:
Item
Optional content
Remark
AC Filter
[ON]/[OFF]
Setting of default using AC Filter or not.
EMG Filter
[ON]/[OFF]
Setting of default using EMG Filter or
not.
DFT Filter
[ON]/[OFF]
Setting of default using DFT Filter or not.
Show Style
[3 Leads]/[6 Leads]/[12 Leads]
Setting of default show style.
Show Gain
[2.5mm/mV]/[5mm/mV]/[10mm/mV]
/[20mm/mV]/[40mm/mV]
Setting of default show gain.
Show Speed
[5mm/s]/[6.25mm/s]/[10mm/s]/
[12.5mm/s]/[25mm/s]/[50mm/s]
Setting of default show
speed.Auto-record and Rhythm record
can not support
5mm/s,10mm/s,12.5mm/s when
printing.
13.10 Analysing Parameter Settings.
Select the button in the main interface can start the following analyzing parameter
setting dialogue box:
The settings here will affect the diagnose hint of the real-time analysis, archive review and print
report during sampling.
Select the button【Default】, the system settings will back to the default.
Refer to follow:
Item
Remark
Rhythm
Lead
Setting the rhythm lead to analyze heart rate and print ECG in rhythm print
mode.
Premature
The system will use the inputted value as a standard of judging premature beat .
Pause
Time
The system will use the inputted value as a standard of judging pause beat.
Tachycardi
a
The system will use the inputted value as a standard of judging tachycardia.
Bradycardi
a
The system will use the inputted value as a standard of judging bradycardia.
13.11 Print Settings
Select the button in the main interface, can start the print setting dialogue box like
illustration:
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Select the button【Default】, the print settings will back to the default.
In this interface, the automatic mode option can only be effective when select "auto" in 【Print
Mode】.
Item
Optional content
Remark
Print Mode
[Auto 3*4+1] /[Auto3*4]
/[Auto2*6+1] /[Auto2*6]/
[[Auto 4*3] /[Rhythm2]/
[Rhythm 3 ]/[Rhythm4]/
[Manual]
The selection will be used as the default print
mode.
Lead Gain
Smart/Current
The selection will be used as the default Lead
Gain. "Smart" means that the system will adjust
the lead gain automatic to fit the height of paper
while printing. "Current" means that the system
will use the screen lead gain while printing.
Auto strip
3Sec/4Sec/5Sec/6Sec/8S
ec/
10Sec/15Sec/20Sec/25Se
c
The selection will be used as the default print time
length of step.
Rhythm
strip
10Sec/15Sec/20Sec/25Se
c/
30Sec
Under the print mode is "Rhythm 2", "Rhythm 3"
Or "Rhythm 4", the system will use the select
option as the print time length of rhythm strip.
Average
QRS
[2*6]/[2*6+Mark]/[3*4]/
[3*4+Mark]/[4*3]/
[4*3+Mark]/[None]
Under the print mode is "Rhythm" Or "Auto",the
system will use the select option as the default
print style of average QRS.
Auto-Diag
All/Data/Conclusion/None
The auto-diagnose contains 2 parts of data and
conclusion, user can print one of them only as his
wish.
Periodic
[per1Min]/[per2Min]/
[per3Min]/[per5Min]/
[per10Min]/[per20Min]/
[per30Min]/[per60Min]/[off]
The system will print ECG periodically in the select
time interval, If the option of print mode is selected
as "Manual", the system will print in "Auto3 * 4 +
1". Otherwise, the system will print in selected
mode.
Hospital
Fill in it yourself.
Fill the hospital name in it.
Note: Auto strip, Rhythm strip, Average QRS, Auto-Diag, Periodic are available when
"Auto" or "Rhythm" print mode is selected.
13.12 Checking Electrodes Placement
Select button on the main interface can start the following lead emplace illustration
interface:
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Select any key can exit this interface.
13.13 About Us
Select button in the main interface can start the information interface related to this
instrument.
This interface shows the instrument name, version, company name, copyright and company
contact detail.
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Chapter 14 Troubleshooting
14.1 Turn off Automatically
① Please check whether the power of battery is used up. Over discharge control circuit of the
battery acts.
② Please check whether the alternating current voltage is too high. Overvoltage control circuit
acts.
③ Please check whether the alternating current disturb is too high, whether the fix knob of
lead plug is too tight. Shut automatically is for protecting circuit when overload.
14.2 AC Interference
① Is the ECG device ground cable proper?
② Are the electrodes and leads connected properly?
③ Is the electrode and skin covered with enough Gel?
④ Is the metal bed grounding proper?
⑤ Does the patient touch the wall or metal sickbed?
⑥ Does other people touch the patient?
⑦ Whether there is powerful electric device working beside ECG device? For example: X
radial device or B-Ultrasound devices.
14.3 EMG Interference
① Whether the patient room is comfortable.
② Is the patient nervous?
③ Is the sickbed too narrow?
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14.4 Baseline Drift
① Verify the electrode attachment and lead wire performance.
② Check the connection between patient cable and electrodes.
③ Check the cleaning of electrode and patient skin. Is the electrode and skin covered with
enough Gel?
④ Keep the patient from motion or hyperventilation.
⑤ Is the connection between lead and electrode proper?
Please use filter if still having above-mentioned interference.
14.5 Troubleshooting List
Phenomenon
Reason
Resolve method
Disturbance too
big, the
waveform is in
disorder
1.Whether the ground cable proper.
2.The connection of leads is not stable.
3.Whether there is disturbance from
alternating current.
4.Patient is nervous
1.Please check the lead, ground
cable and power supply.
2.Please dispose the patient in
proper state.
Baseline is
rough
1.Disturbance from alternating current is
too fierce.
2.Patient is nervous and the disturbance
of EMG too strong
1.Change a comfortable
environment for patient
2.If the sickbed is metal, please
change it.
3.The power line and lead is not
parallel or too close.
Wave form is
not regular, with
too great wave
or beeline
1.The conductivity of electrode is not
well.
2.Power of battery is used up
3.Contact between electrode and skin is
not proper.
4.The plug between lead and main unit
is not tight.
5.The contact between lead and
electrode is not proper.
1.Use alcohol of high quality.
2.Clean the electrode and patient’s
skin where touch the electrode.
3.Charge the battery.
4. Keep the electrode reed clamping.
Baseline drift
1.Power of battery is used up.
2.Patient is moving.
1.Charge the battery.
2.Keep patient hold still.
Waveform is not
clear.
1.The printer head is dirty.
2.The paper is not right.
1.Clean the printer head with alcohol
when the power is off, use the printer
head after the alcohol is volatile.
2.Use the appointed thermal print
paper.
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Chapter 15 Maintenance and Preservation
15.1 Customer is not permitted to open the instrument, in archive of any electronic shock. Any
maintenance or update should execute by the trained and authorized professionals from
Contec. The maintenance should be done with the original accessories from Contec Medical
Systems Company Limited.
15.2 The integrality of the lead cables need to be checked termly. the damage of any a lead
may cause corresponding lead or all leads no figure. the lead cables can be cleaned with water
and soap, be disinfected with 75% alcohol.
15.3 The electrode should be stored properly and disinfected with 75% alcohol. For the
electrode which has used for long time, please replace it.
15.4 Please use the neutral cleanser to clean the device. Don't immerge the device in cleanser.
15.5 Pull out the power plug when power failure. For the device which is not used for long, put it
in the shade and dry site, and electrify it every 3 months.
15.6 Regular maintenance is necessary for this device. Please check it every 6 months at least,
and measure it every year. For the device which has used/stored for more than one year,
please measure it before using again.
15.7 The schematic diagram and key parts list of this device can be only provided to the eligible
service station or personnel authorized by our company.
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Appendix
Guidance and manufacturer’s declaration–electromagnetic emissions-
for all EQUIPMENT and SYSTEMS
Guidance and manufacturer’s declaration – electromagnetic emission
The ECG300G is intended for use in the electromagnetic environment specified below. The
customer of the user of the ECG300G should assure that it is used in such and environment.
Emission test
Compliance
Electromagnetic environment –
RF emissions
CISPR 11
Group 1
The ECG300G uses RF energy only for its
internal function. Therefore, its RF emissions
are very low and are not likely to cause any
interference in nearby electronic equipment.
RF emission
CISPR 11
Class
A
The ECG300G is suitable for use in all
establishments, other than domestic
establishments and those directly connected
to the public low-voltage power supply
network that supplies buildings used for
domestic purposes.
Harmonic emissions
IEC 61000-3-2
Class
A
Voltage fluctuations/
flicker emissions
IEC 61000-3-3
Complies
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Guidance and manufacture’s declaration – electromagnetic immunity –
for all EQUIPMENT and SYSTEMS
Guidance and manufacture’s declaration – electromagnetic immunity
The ECG300G is intended for use in the electromagnetic environment specified below. The customer or the
user of
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment
- guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±6
kV contact
±8 kV air
±6
kV contact
±8 kV air
Floors should be wood, concrete
or ceramic tile. If floor are
covered with synthetic material,
the relative humidity should be
at least 30%.
Electrical fast
transient/burst
IEC 61000-4-4
±2 kV for power supply
lines
±2 kV for power supply
lines
Mains power quality should be
that of a typical commercial or
hospital environment.
Surge
IEC 61000-4-5
±1 kV differential mode
±2 kV common mode
±1 kV differential mode
±2 kV common mode
Mains power quality should be
that of a typical commercial or
hospital environment.
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
<5% U
T
(>95% dip in
U
T
)
for 0.5 cycle
40% UT
(60% dip in
U
T
)
for 5 cycles
70% UT
(30% dip in
U
T
)
for 25 cycles
<5% UT
(>95% dip in
U
T
)
for 5 sec
<5% U
T
(>95% dip in
U
T
)
for 0.5 cycle
40% UT
(60% dip in
U
T
)
for 5 cycles
70% UT
(30% dip in
U
T
)
for 25 cycles
<5% UT
(>95% dip in
U
T
)
for 5 sec
Mains power quality should be
that of a typical commercial or
hospital environment. If the
user of the ECG300G requires
continued operation during
power mains dip&interruptions,
it is recommended that the
ECG300G be powered from an
uninterruptible power supply or
a battery.
Power frequency
(50/60Hz) magnetic
field
IEC61000-4-8
3A/m
3A/m
Power frequency magnetic fields
Should be at levels
characteristic of a typical
location in a typical commercial
or hospital environment.
NOTE UT is the a.c. mains voltage prior to application of the test level.
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Guidance and manufacturer’s declaration – electromagnetic immunity –
for EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING
Guidance and manufacturer’s declaration – electromagnetic immunity
The ECG300G is intended for use in the electromagnetic environment specified below. The customer or the
user of
ECG300G should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance
level
Electromagnetic environment - guidance
Conducted
RF IEC
61000-4-6
Radiated RF
IEC
61000-4-3
3 V
rms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V
rms
3 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the ECG300G,
including cables, than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
Where P is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,a
should be less than the compliance level in each
frequency range.b
Interference may occur in the vicinity of equipment
marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be
predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which the ECG300G is used exceeds the applicable RF compliance level above, the
ECG300G should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the ECG300G.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
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Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM –
for EQUIPMENT or SYSTEM that are not LIFE-SUPPORTING
Recommended separation distances between
portable and mobile RF communications equipment and the ECG 300G
The ECG 300G is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the ECG300G can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the ECG 300G as recommended below, according
to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency of transmitter
(m)
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.17
1.17
2.33
10
3.69
3.69
7.38
100
11.67
11.67
23.33
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (m) can be estimated using the equation applicable to the frequency of the
transmitter, where P is the maximum output power rating of the transmitter in watts (W) according
to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
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Disposal: The product must not be disposed of along with other domestic waste. The users
must dispose of this equipment by bringing it to a specific recycling point for electric and
electronic equipment. For further information on recycling points contact the local
authorities, the local recycling center or the shop where the product was purchased. If the
equipment is not disposed of correctly, fines or penalties may be applied in accordance with
the national legislation and regulations.
0123
CONTEC MEDICAL SYSTEMS CO., LTD
No. 112 Qinhuang West Street, Economic & Technical Development Zone,
Qinhuangdao, Hebei Province, PEOPLE'S REPUBLIC OF CHINA
Shanghai International Holding Corp. GmbH (Europe)
Eiffestrasse 80, 20537, Hamburg, Germany
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Explanations of symbols on unit
Symbol for "applied parts" (the electrodes are type CF applied
parts).
Symbol for "environment protection" - waste electrical products
should not be disposed of with household waste. Please recycle
where facilities exist. Check with your local Authority or retailer for
recycling advice.
Symbol for "manufacturer".
Symbol for "complies with MDD93/42/EEC requirements".
Symbol for "date of manufacture".
Symbol for "European representative".
Symbol for "serial number".
Rev.1.11.17
0123
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