ECGMAC VET-301 User manual

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VET-301
Multi-channel ECG
Version: 1.0
User Manual

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Copyright ©2020 Shenzhen ECGMAC Medical Electronics Co., Ltd. All rights reserved.
Release Date: April 2020
Version:V1.0
Statement
Shenzhen ECGMAC Medical Electronics Co., Ltd (hereinafter called ECGMAC) assumes no
responsibility for any injury, or for any improper or illegal use of the product, that result from
failing to comply with this manual, ECGMAC assumes no consequence caused by the publication.
Any part of the manual shall not be reproduced, photocopied in any form without prior written
permission from ECGMAC.ECGMAC reserves the right to change, update, revise the product
design, specification and function at any time without notice.
Responsibility of the Manufacturer
ECGMAC only considers itself responsible for any effects on safety, reliability and performance of
the equipment if:
Assembly operations, extensions, re-adjustments, modifications or repairs are carried out by
personnel authorized by ECGMAC, and the electrical installation of the relevant room complies
with safety standards.

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Contents
1. Safety Guidance.......................................................................................................... 5
1.1 Installation and Storage.................................................................................................................................. 5
1.2 Before Operation.............................................................................................................................................5
1.3 During Operation............................................................................................................................................ 5
1.4 After Operation............................................................................................................................................... 6
1.5 EMC and Relevant Notes............................................................................................................................... 6
1.6 Device Classification...................................................................................................................................... 6
1.7 Measurement Requirement.............................................................................................................................7
1.8 Discarding the Equipment.............................................................................................................................. 7
1.9 Symbols...........................................................................................................................................................7
1.10 Recording Paper............................................................................................................................................8
2. Safety Information...................................................................................................... 9
2.1 Safety Warning................................................................................................................................................9
2.2 Warnings for Rechargeable Lithium Battery................................................................................................10
2.3 General Notes................................................................................................................................................11
2.4 Cleaning, Disinfection and Maintenance..................................................................................................... 12
2.5 Intended Use................................................................................................................................................. 13
3 Structure and Principle...............................................................................................14
3.1 Product Structure.......................................................................................................................................... 14
3.2 Electrodes Connection.................................................................................................................................. 18
3.3 Animal Cable Connection.............................................................................................................................20
3.4 Power Connection.........................................................................................................................................20
3.5 Principle and Schematic Diagram................................................................................................................ 21
4. Operation Preparations..............................................................................................22
4.1 Applicable Fields.......................................................................................................................................... 22
4.2 Inspection before Operation......................................................................................................................... 22
4.3 Lead off Indication........................................................................................................................................22
4.4 Battery Installation........................................................................................................................................23
4.5 Recording Paper............................................................................................................................................24
4.6 Loading Recording Paper............................................................................................................................. 24
5. Operation Instructions...............................................................................................25
5.1 Startup and Shutdown...................................................................................................................................25
5.2 The ECG Main Interface...............................................................................................................................26
5.3 Operation Mode............................................................................................................................................ 28
5.4 Leads Setup...................................................................................................................................................31
5.5 System Setting.............................................................................................................................................. 32
6. Cleaning, Disinfection and Maintenance................................................................. 42

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6.1 Cleaning........................................................................................................................................................ 42
6.2 Disinfection...................................................................................................................................................43
6.3 Care and Maintenance.................................................................................................................................. 43
7. Common Troubleshooting and Solution...................................................................46
7.1 Some Lead without Waveform Printout....................................................................................................... 46
7.2 Vertical Breakpoint of Printed Waveform.................................................................................................... 46
7.3 Buttons on the Control Panel not Working...................................................................................................47
7.4 AC Interference.............................................................................................................................................47
7.5 EMG Interference......................................................................................................................................... 47
7.6 Baseline Drift................................................................................................................................................48
8. Warranty and After-sale Service............................................................................... 49
8.1 Warranty........................................................................................................................................................49
8.2 Customer Service..........................................................................................................................................49
Appendix A Packaging and Accessories.......................................................................50
A.1 Packing.........................................................................................................................................................50
A.2 Caution......................................................................................................................................................... 50
Appendix B Product Performance................................................................................ 51
B.1 External Output............................................................................................................................................ 51
B.2 External DC Signal Input.............................................................................................................................51
Appendix C Specification............................................................................................. 53
C.1 Technical Index............................................................................................................................................ 53
C.2 Dimension and Weight.................................................................................................................................54
C.3 Environment Conditions.............................................................................................................................. 55
Appendix D EMC Information..................................................................................... 55
Appendix E Manufacturer Information........................................................................ 58

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1. Safety Guidance
This is provided for the use of qualified physicians or personnel professionally trained.
The operator is supposed to be familiar with the contents of this Operation Manual before
operation.
This is applicable for Veterinary ECG signal acquisition, recording and analysis.
1.1 Installation and Storage
Avoid contact with water. Don’t install and store in the high air-pressure, humidity and
temperature, poor ventilation and dusty environment;
Put the ECG in the stable place to avoid vibration;
Don’t install and store it in the environment including sulphur, salt and soda and other
chemicals;
Be sure there is no intense electromagnetic interference source around the equipment, such as
high-voltage cable, radiological equipment and magnetic resonance imaging equipment.
Make sure the integrity of the external protective earth conductor in the room
1.2 Before Operation
Check if the equipment is in good condition;
Check if the equipment is placed properly;
Check if all the lead wires are well connected and the equipment is properly grounded;
When the instrument is used with other instruments, special attention should be paid to safety,
misdiagnosis and other problems;
All circuits which directly contact animals need to be inspected more carefully;
The voltage and frequency of the AC power must match the requirements on the user manual
and the battery capacity must be sufficient when battery is applied.
1.3 During Operation
During the operation, the doctors cannot leave alone the animals. Watch the animal carefully
and turn off the power or remove the electrodes if necessary to ensure the safety of animals;
Except electrodes, animals should not contact other parts of the instrument or other conductors

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1.4 After Operation
Reset all the function setup to the initial state and shut down the power;
Gently remove the electrodes, and do not harshly drag the wires;
Clean the instrument and accessories for the later use.
1.5 EMC and Relevant Notes
This instrument complies with IEC60601-1-2 standard about the medical electronic equipment
safety standards on electromagnetic compatibility. But in an electromagnetic environment
exceeding the limitation of IEC60601-1-2 standard, the instrument might suffer from harmful
interference and will not provide expected function or get worse performance. If the performance of
the instrument is degraded while working, please check and eliminate possible adverse effects
before any further use. This manual provides the following preventive procedures.
1.5.1 The Influence of Electromagnetic Radiation
Mobile phone may affect the operation of this equipment. Once this equipment is used, be
sure to remind people to turn off mobile phones and small wireless devices.
1.5.2 The Influence of Impact and Electromagnetic Waves
The high frequency noise made by other instruments may bring electromagnetic interference
to the instruments via entering AC outlet. Please identify the noise source and stop using the
corresponding equipment. If it can not be stopped then use de-noising equipment to reduce
the influence.
1.5.3 Electrostatic Affect
The static electricity in a dry room may affect the operation of this instrument, especially in
the winter. Before using this instrument, humidify the air in the room, or discharge the static
electricity from cables or the ECG animals.
1.5.4 Impact of Lightning
Nearby lightning may cause high-voltage surge. If worried about this issue, please disconnect
the AC power and use the battery power.
1.6 Device Classification
Protection against electric shock: Class I & internally powered; Defibrillation-proof Type CF
Applied part
Normal equipment (no protection against ingress of hazardous liquid)

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Combustible gas safety: Not suitable for use under the presence of flammable gas
Mode of operation: Continuous
1.7 Measurement Requirement
ECG belongs to measurement instrument. The users are suggested to send the instrument to
authorized Measurement Institutes for verification at least once a year according to the state ECG
and EEG metrological verification regulations.
1.8 Discarding the Equipment
Discard electronic materials, packing materials, battery and other declared waste according to the
local laws. Support the sorting recycling work of the local administration.
1.9 Symbols
Symbols
Function
Symbols
Function
USB
Alternating current
Battery recharging indicator
Product serial number
Manufacturer
Date of manufacture
Recycle
Transportation and Storage
temperature range
Avoid direct light
Keep dry
Tier limitation
DEFIBRILLATION-PROOF
TYPE CF APPLIED PART

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Battery indicator
Note (general warning): the
information you should know to
avoid possible damage to animals
or operators.
Note: the information you
should know to avoid possible
damage to the equipment
Equipotentiality
Follow instructions for use
DISPOSAL: Do not dispose this
product as unsorted municipal waste.
Collection of such waste separately for
special treatment is necessary
Transportation and Storage
Relative humidity range
Transportation and Storage
Atmospheric pressure
Fragile
Lot Number
Remark:
Note (general warning): the information you should know to avoid possible damage to
animals or operators.
Note: the information you should know to avoid possible damage to the equipment
1.10 Recording Paper
To guarantee the record quality of the ECG waveforms, please use the high speed thermal paper
supplied or appointed by ECGMAC. Other paper may shorten print head’s life. And the deteriorated
print head may lead to illegible ECG record and block the advance of paper etc
Please do pay attention to the following aspects：
(1) Never use wax-coated recording paper. Otherwise wax may stick to the heater of the print head
and damage it;
(2) Record paper should be stored in dry and cool area, avoiding excessive temperature，humidity
and sunshine;
(3) Avoid exposure to fluorescent for a long time, it will influence the recording quality;
(4) Be sure that there is no polyvinyl chloride or other chemicals in the storage environment, which
will lead to color change of the paper;

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(5) Do not overlap the recording paper, otherwise the ECG record may trans-print each other;
(6) Pay attention to the size of the paper. Improper size may damage the printer head or Roller shaft.
2. Safety Information
2.1 Safety Warning
Use three core power cord and protective grounding socket when mains supply is applied, in
order not to cause electric shock to animal and operator.
Be sure that the installation room has stable power supply system which is reliable and
grounding.
When the system is not complete and reliable, cut off the A/C power and use internal D/C
supply directly
Do not use the instrument near anesthetic gases, oxygen, hydrogen or other flammable and
corrosive chemicals.
Do not use the instrument near high-voltage, high- static, X ray, ultrasonic, electrosurgical
equipment and other strong magnetic wave environment.
Only qualified service engineers can install this equipment. And only service engineers
authorized by ECGMAC can open the shell case.
Auxiliary equipments connected to the digital and analog interfaces must be certified
according to IEC standards (e.g. IEC950 for data processing equipment and IEC60601-1 for
medical equipment). Therefore anybody, who connects additional equipment to the signal input or
output connector to configure a medical system, must make sure that it complies with the
requirements of the valid version of the system standard IEC60601-1-1. If any questions, please
consult our service department or the local agent on your side.
When defibrillator is used simultaneously with the instrument, the operator should not

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touch animal, bed, table or instrument. All the electrodes (whether connected to the animal or not)
and the animal do not need to be grounded. When the instrument is operated simultaneously with
defibrillator or other electrical stimulation equipment, it is recommended to use disposable plate
chest electrodes to avoid skin burns by metal electrodes.
Be careful when animal is connected to multiple equipments, the total leakage current
might cause the injury. Only type I equipment compliant with IEC60601-1 is allowed to connect
with this instrument, when it is connected with other equipments. Meanwhile, reliable connection
between the potential equalization needs to be carefully considered. After the connection, the
users must measure the total leakage current by themselves to determine whether it meets the
requirements or usage condition.
The pacemaker (if installed) may influence the accuracy and analysis result. Under this
situation, it is suggested that the doctors should identify and analyze it according to the waveform.
To prevent burns, high frequency electric knife contact point must be kept away from the
electrodes. If necessary, plate electrodes can be chosen. Its larger contact area can limit
high-frequency current density to an acceptable range.
The total leakage current should never exceed leakage current limits while several other
instruments are used at the same time.
The operator should not touch animal, animal bed, table or instrument when it use
simultaneous with the defibrillator or pacemaker.
Please use the animal cable and other accessories supplied by ECGMAC. Otherwise, it
will affect the performance and function, even damage the ECG.
Be sure that all electrodes have been connected to the correct position of human body
before operation. Avoid electrodes (including neutral electrodes) and animal to be contacted with
any conducting parts or earth.
The equipment is protected against malfunction caused by electrosurgery.
2.2 Warnings for Rechargeable Lithium Battery

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Improper operation might cause the rechargeable lithium battery to become hot, ignited, exploded,
and it may lead to declination of battery capacity. It is necessary to read the Operation Manual
carefully and pay more attention to warning messages.
Danger of explosion- Do not reverse the anode and cathode when connecting the battery.
Do not use the battery near fire or place over 60℃. Don’t heat or splash the battery. Do not
throw the battery into fire or water.
Do not ruin the battery by hammering, beating, chiseling a metal into it or other else, which
will cause the battery to be deformation, heat, to smoke, burn and other danger.
When leakage or foul smell found, stop using the battery immediately. If the leakage liquid
gets to your skin or cloth, cleanse it when clean water at once. If the leakage liquid gets into your
eyes, do not wipe them. Irrigate them with clean water first and go to see a doctor immediately.
Opening the battery cover, disassembling or replacing battery should be done according to
the Operation Manual and only battery of same model and specification provided by the
manufacturer should be used.
When the shelf life of battery is due, or foul smell and leakage has been found, stop using it,
and contact the manufacturer or local distributor for disposal or dispose the battery according to
local regulations.
Do not pull in or take out the battery when the equipment is powered on, which will cause
white screen, crash, etc.
Take out the battery when not using the equipment for long time
2.3 General Notes
In order to record ECG data accurately, the instrument should be placed in a horizontal table
to avoid excessive vibration and shock during movement. The environment should be quiet and
comfortable.

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Avoid liquid splash and excessive temperature. The temperature must be kept between 5℃to 40℃
while working.
Do not use the equipment in dusty environment with poor ventilation or in the presence of
corrosive, such as salt, sulphur and chemicals.
Be sure that there is no intense electromagnetic interference source around the equipment,
such as radio transmitter or mobile phone etc. Attention: large medical electrical equipment such
as electrosurgical equipment, radiological equipment and magnetic resonance imaging equipment
etc. are likely to bring electromagnetic interference.
Check the main unit and its accessories carefully before operating the ECG for animals.
Replacement should be taken if there is any evident defectiveness or aging symptom which may
impair the safety or performance.
The frequency and voltage of the AC power should conform to it requires. This ECG uses
mains supply and built-in rechargeable lithium battery. For mains supply, rated voltage: 220V,
frequency: 50Hz; power: 50VA. For battery, rated voltage: 14.8V, capacity: 2200mAh, power:
50VA.When using, please follow the requests to supply power.
The equipment and reusable accessories can be sent back to the manufacturer for
recycling or proper disposal after their useful lives.
If any accident happens during use, please turn off the ECG immediately.
2.4 Cleaning, Disinfection and Maintenance
Turn off the main unit and remove power supply cable and animal cable before cleaning and
disinfection.
Prevent the detergent from seeping into the main unit while cleaning. Do not immerse the
main unit or animal cables into liquid under any circumstances.

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Do not clean the unit and accessories with abrasive fabric and avoid scratching the electrodes.
Be sure no cleanser remains on the unit, animal cable or electrodes.
Disinfection, if required, can not be done with high temperature, autoclaving or radiation.
Do not use chloric disinfectant such as chloride and sodium hypochlorite etc.
Maintenance and repair should be applied on the main units and accessories regularly (at
least once a year)
ECG machines are classified into Measuring Instrument, so users should send it to Official
Measurement Administrative to test and certify according to national metrological calibration
regulation of electro-cardiograph and electroencephalogram machine every year.
The instrument signal input/output connector (when needed) must be connected with Class I
equipment which is IEC60601-1 compliant, and the total leakage current should be tested to be
available by users themselves.
Electrical schematic diagram and parts lists are only available to qualified repair stations or
staff of ECGMAC authorized.
2.5 Intended Use
The intended use is to acquire the ECG waveforms from animals through electrodes. It should be
used by doctors or trained nurses in medical institutions. The ECG signals recorded by the
instrument can help users to analyze and diagnose heart diseases. The multi-channel ECG with the
measured value and its explanatory notes are only for the reference of clinicians.

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3 Structure and Principle
3.1 Product Structure
3.1.1Top view
Sign
Name
Description
A
Recorder
Load recording paper, print ECG report
B
LCD screen
Display operation interface and contents
C
Keyboard
Function buttons, input of numbers and letters
The LCD screen can be damaged if place heavy object on it or hit it.
Please fold the screen to prevent accidental damage after use.
B
A
C

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3.1.2 Bottom Panel
Signal
Name
Function description
A
Battery compartment
Lithium battery installed inside
B
Battery label
Battery group label
C
Vents
Internal heat dissipation channel
D
Product label
Product information label
E
Fuse label
Fuse specification label
F
Fuse compartment
AC fuse installation
Battery compartment
The rated output voltage and capacity of built-in rechargeable lithium batteries are as follow:
Rated output voltage: 14.8V
Rated capacity:2200mAh
3.1.3 Rear View
B
A
C
F
E
C
A
B
D

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Sign
Name
Function description
A
AC power socket
Connect with AC power cord
B
Vents
Internal cooling channels
C
Handle
Easy to carry
3.1.4 Side view
Sign
Name
Function description
A
Animal cable socket
Connect animal cable.
B
Test interface
Testing by manufacturer
C
SD card slot
For SD card insertion
D
USB Master Port
Standard USB 2.0 port to connect external printer
supporting PCL6, or connect to USB Barcode Reader
E
USB Slave Port
Standard USB 2.0 port to connect PC (optional)
F
LAN socket
Standard LAN port, connect with network cable
G
Potential equalization
When need to use potential equalization grounding
cable to protect the security of electricity, use
grounding cable to connect this potential equalization
terminal with the grounding cable which is already
connected to the walls
Test interface B list above is for manufacturer use only

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3.1.5 Keyboard and the Functions
Sign
Button Name
Function Description
A
Numbers and letters input
Enter numbers, letters and signs
B
ESC
Cancel operation
C
Function buttons
Select screen menu functions
D
Backspace
Delete the character to the left of the cursor
E
Input method
Choose the input methods: English / Numbers
F
Five-way navigation buttons
Up, down, left, right and action.
G
Copy button
Copy the last ECG signals when the system
works in automatic model.
H
ON/OFF
Turn on or off the ECG.
I
Reset
Make lead input fast and stable and reset lead
print output
J
Recording mode
Select recording modes: manual, automatic and

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rhythm.
K
Lead Select
Lead switch in manual mode.
L
START/STOP
Start and stop print
M
Sleep/wake up
System enters sleep mode or back to work
mode
3.2 Electrodes Connection
The installation of electrodes is critical for accurate record of ECG signals. Please ensure
electrodes are well-connected. Disposable electrodes cannot be used together with reusable
electrodes (old or new). Different models cannot be used together otherwise it will seriously
affect the accuracy of ECG record. Electrodes or lead wire socket cannot touch other
conductors, such as metal beds. All electrodes need to be replaced together during
replacement.
3.2.1 Limb Electrodes Connection
Limb electrodes should be installed on the soft skin of right and left forelimb and right and
left hind legs as shown below. Clean the skin where electrodes will be installed with medical
alcohol; Apply a small amount of electrode gel on the skin.

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R (RA) connect right forelimb; L (LA) connect left forelimb
RF (RL) connect right hind legs; F (LL) connect left hind legs
3.2.4 Lead Method and System Diagram

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3.3 Animal Cable Connection
Plug the animal cable connector into the socket on the right side of ECG machine as shown
below, and lock the screw on both sides.
Only use the designated animal cables. Do not use any other models.
animal cables socket is designed for ECG signal input only. Do not use it for other
Purpose
The instrument has built-in defibrillator protection circuit with supporting non
defibrillation protection cables
3.4 Power Connection
3.4.1 AC power
Plug one end of three-core power cord to the power socket on the ECG and the other end to the
socket on the wall as shown below:
3.4.2 DC Battery
Animal Cable
Animal Cable Socket