Viatom BP2 User manual

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User’s Manual
Blood Pressure Monitor
Model BP2, BP2A

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1. The Basics
This manual contains the instructions necessary to operate the product safely and in accordance with
its function and intended use. Observance of this manual is a prerequisite for proper product
performance and correct operation and ensures patient and operator safety.
1.1 Safety
Warnings and Cautionary Advices
Before using the product, please ensure that you have read this manual thoroughly and fully
understand corresponding precautions and risks.
This product has been designed for practical use, but is not a substitute for a visit to the doctor.
This product is not designed or intended for complete diagnosis of cardiac conditions. This
product should never be used as a basis for starting or modifying treatment without independent
confirmation by medical examination.
The data and results displayed on the product are for reference only and cannot be directly used
for diagnostic interpretation or treatment.
Do not attempt self-diagnosis or self-treatment based on the recording results and analysis.
Self-diagnosis or self-treatment may lead to deterioration of your health.
Users should always consult their physician if they notice changes in their health.
We recommend not to use this product if you have a pacemaker or other implanted products.
Follow the advice given by your doctor, if applicable.
Do not use this product with a defibrillator.
Never submerge the product in water or other liquids. Do not clean the product with acetone or
other volatile solutions.
Do not drop this product or subject it to strong impact.
Do not place this product in pressure vessels or gas sterilization product.
Do not disassemble and modify the product, as this could cause damage, malfunction or impede
the operation of the product.
Do not interconnect the product with other product not described in the Instruction for Use, as
this could cause damage or malfunction.
This product is not intended for use by people (including children) with restricted physical,
sensory or mental skills or a lack of experience and/or a lack of knowledge, unless they are
supervised by a person who has responsibility for their safety or they receive instructions from
this person on how to use the product. Children should be supervised around the product to
ensure they do not play with it.
Do not allow the electrodes of the product to come into contact with other conductive parts
(including earth).
Do not use the product with persons with sensitive skin or allergies.
DO NOT use this product on infants, toddlers, children or persons who cannot express

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themselves.
Do not store the product in the following locations: locations in which the product is exposed to
direct sunlight, high temperatures or levels of moisture, or heavy contamination; locations near
to sources of water or fire; or locations that are subject to strong electromagnetic influences.
This product displays changes in the heart rhythm and blood pressure etc. which may have
various different causes. These may be harmless, but may also be triggered by illnesses or
diseases of differing degree of severity. Please consult a medical specialist if you believe you may
have an illness or disease.
Vital signs measurements, such as those taken with this product, cannot identify all diseases.
Regardless of the measurement taken using this product, you should consult your doctor
immediately if you experience symptoms that could indicate acute disease.
Do not self-diagnose or self-medicate on the basis of this product without consulting your doctor.
In particular, do not start taking any new medication or change the type and/or dosage of any
existing medication without prior approval.
This product is not a substitute for a medical examination or your heart or other organ function,
or for medical electrocardiogram recordings, which require more complex measurements.
We recommend that you record the ECG curves and other measurements and provide them to
your doctor if required.
Clean the product and cuff with a dry, soft cloth or a cloth dampened with water and a neutral
detergent. Never use alcohol, benzene, thinner or other harsh chemicals to clean the product or
cuff.
Avoid tightly folding the cuff or storing the hose tightly twisted for long periods, as such
treatment may shorten the life of the components.
The product and cuff are not water-resistant. Prevent rain, sweat and water from soiling the
product and cuff.
To measure blood pressure, the arm must be squeezed by the cuff hard enough to temporarily
stop blood flow through the artery. This may cause pain, numbness or a temporary red mark to
the arm. This condition will appear especially when measurement is repeated successively. Any
pain, numbness, or red marks will disappear with time.
Too frequent measurements can cause injury to the patient due to blood flow interference.
Consult your physician before using this product on an arm with an arterio-venous (A-V) shunt.
Consult your physician before using this monitor if you have had a mastectomy or lymph node
clearance.
The pressurization of the CUFF can temporarily cause loss of function of simultaneously used
monitoring product on the same limb.
Consult your physician before using the product if you have severe blood flow problems or blood
disorders as cuff inflation can cause bruising.
Please prevent that operation of the product results in prolonged impairment of the circulation

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of the blood of the patient.
Do not apply the cuff on an arm with another medical electrical equipment attached. The
equipment may not function properly.
People who have a severe circulatory deficit in the arm must consult a doctor before using the
product, to avoid medical problems.
Do not self-diagnose the measurement results and start treatment by yourself. Always consult
your doctor for evaluation of the results and treatment.
Do not apply the cuff on an arm with an unhealed wound, as this can cause further injury.
Do not apply the cuff on an arm receiving an intravenous drip or blood transfusion. It may cause
injury or accidents.
Remove tight-fitting or thick clothing from your arm while taking a measurement.
If the patients’arm is outside the specified circumference range that may result in incorrect
measurement results.
The product is not intended for use with neonatal, pregnant, including pre-eclamptic, patients.
Do not use the product where flammable gases such as anesthetic gases are present. It may
cause an explosion.
Do not use the product in the area of HF surgical equipment, MRI, or CT scanner, or in an oxygen
rich environment.
The battery intended to be changed only by service personnel with the use of a tool, and
replacement by inadequately trained personnel may result in damage or burn.
The patient is an intended operator.
Do not carry out the servicing and maintenance while the product is in use.
The patient can safely use all the functions of the product, and the patient can maintain the
product by carefully reading Chapter 7.
This product emits radio frequencies (RF) in the 2.4 GHz band. DO NOT use this product in
locations where RF is restricted, such as on an aircraft. Turn off the Bluetooth feature in this
product and remove batteries when in RF restricted areas. For further information on potential
restrictions refer to documentation on the Bluetooth usage by the FCC.
DO NOT use this product with other medical electrical (ME) equipment simultaneously. This may
result in incorrect operation of the product and/ or cause an inaccurate blood pressure readings
and/ or EKG recordings.
Sources of electromagnetic disturbance may affect this product (e.g. mobile telephones,
microwave cookers, diathermy, lithotripsy, electrocautery, RFID, electromagnetic anti-theft
systems, and metal detectors), please try to stay away from them when making measurements.
The use of accessories and cables other than those specified or provided by manufacture could
result in increased electromagnetic emission or decreased electromagnetic immunity of the
product and result in improper operation.
Interpretations made by this product are potential findings, not a complete diagnosis of cardiac

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conditions. All interpretations should be reviewed by a medical professional for clinical
decision-making.
DO NOT use this product in the presence of flammable anesthetics or drugs.
DO NOT use this product while charging.
Remain still while recording an ECG.
The detectors of ECG have been developed and tested on Lead I and II recordings only.
2. Introduction
2.1 Intended Use
The device is indented to measure blood pressure or electrocardiogram (ECG) in home or healthcare
facilities environment.
The device is a blood pressure monitor intended for use in measuring blood pressure and pulse rate in
adult population.
The product is intended to measure, display, store and review adults’single-channel ECG rhythms and
gives some suggested symptoms such as regular beat, irregular beat, low HR and high HR.
2.2 Contraindications
This product is contraindicated for use in ambulatory environments.
This product is contraindicated for use on aircraft.
2.3 About the product
product name: Blood Pressure Monitor
Product model: BP2 (include NIBP+ECG), BP2A (only NIBP)
1. LED screen
Display date, time and power status, etc.
Display ECG and blood pressure measurement process and results.
2. Start/ Stop button
1
2
3
4
5
6
5

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Power On/ Off
Power On:Press the button to power on.
Power off:Press and hold the button to power off.
Press to power on the product and press again to start measuring blood pressure.
Press to power on the product and touch the electrodes to start measuring ECG.
3. Memory button
Press to review historical data.
4. LED indicator
Blue light is on: the battery is being charged.
Blue light is off: the battery is full charged not charging
5. ECG electrode
Touch them to start measuring ECG with different methods.
6. USB connector
It connects with charging cable.
2.4 Symbols
Symbol
Meaning
SYS
Systolic blood pressure
DIA
Diastolic blood pressure
Pulse beat
HR
Heart rate
Battery indicator
Charging
Application part type BF
Manufacturer
IP22
Against ingress of solid foreign objects ≥12.5mm diameter,
Against dripping(15°tilted)
Follow operating instructions
MRI unsafe. Presents hazards in all MR environments as
product contains strongly ferromagnetic materials.
Non-ionizing radiation
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”.
3. Using the Product
3.1 Charge the Battery
Use the USB cable to charge the product. Connect the USB cable to a USB charger or to the PC. A fully

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charge will need 2 hours. When the battery charged fully the indicator will be blue.
The product works in a very low power consumption and one charge usually works for months.
On-screen battery symbols which indicate the battery status can be seen on the screen.
Note: The product cannot be used during charging, and if choosing a third party charging adaptor,
select one that complies with IEC60950 or IEC60601-1.
3.2 Measure Blood Pressure
3.2.1 Applying the arm cuff
1. Wrap the cuff around the upper arm, about 1 to 2 cm above the inside of the elbow, as shown.
2. Place the cuff directly against the skin, as clothing may cause a faint pulse and result in a
measurement error.
3. Constriction of the upper arm, caused by rolling up a shirtsleeve, may prevent accurate readings.
4. Confirm that the artery position mark is line up with the artery.
3.2.2 How to sit correctly
To take a measurement, you need to be relaxed and comfortably seated. Sit in a chair with your legs
uncrossed and your feet flat on the floor. Place your left arm on a table so the cuff is level with your
heart.
Note:
The blood pressure can differ between the right arm and the left arm, and the measured blood
pressure readings can be different. The Viatom recommends to always use the same arm for
measurement. If the blood pressure readings between both arms differ substantially, check with
your physician to determine as to which arm to use for your measurements.
The time is about 5s required for the product to warm from the minimum storage temperature
between uses until the product is ready for its intended use when the ambient temperature is
20°C, and the time is about 5s required for the product to cool from the maximum storage
temperature between uses until the product is ready for its intended use when the ambient
temperature is 20°C.
3.2.3 Measurement process
1. Press to power on the product and press again to start measuring blood pressure.
2. The product will automatically deflate the cuff slowly during the measurement, a typical

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measurement takes about 30s.
3. The blood pressure readings will scrolling appear in the product when the measurement finished.
4. The product will automatically release the cuff gas after the measurement is over.
5. Press the button to turn off the power after the measurement, then remove the cuff.
6. Press the memory button to review historical data. The blood pressure readings will appear in the
product
Note:
The product has an automatic power shut-off function, which turns off the power automatically
in one minute after measurement.
During the measurement, you should keep still and don’t squeeze the cuff. Stop measuring when
the pressure result appear in the product. Otherwise the measurement may be effected and the
blood pressure readings may be inaccurate.
The device can store maximum 100 readings for Blood Pressure data. The oldest record will be
overwritten when the 101th readings is coming in. Please uploading data in time.
NIBP Measurement Principle
The NIBP measurement way is oscillation method. Oscillation measurement is using automatic inflator
pump. When the pressure is high enough to block arterial blood flow, then it would deflate slowly, and
record all the change of cuff pressure in the deflation process to calculate blood pressure based on
certain algorithm. The computer will judge whether the quality of signal is accurate enough. If the
signal is not accurate enough (Such as sudden movement or touch of cuff while measurement), the
machine will stop deflating or re-inflate, or abandon this measurement and calculation.
The operating steps needed to obtain accurate routine resting blood pressure measurements for the
condition hypertension including:
-- Patient position in normal use, including comfortably seated, legs uncrossed, feet flat on the floor,
back and arm supported, middle of the cuff at the level of the right atrium of the heart.
-- The patient should be relaxes much as possible and should not talk during the measurement
procedure.
-- 5 minutes should elapse before the first reading is taken.
-- Operator position in normal use.

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3.3 Measure ECG
3.3.1 Before using ECG
Before using ECG function, pay attention to the following points in order to obtain precise
measurements.
The ECG electrode must be positioned directly against the skin.
If your skin or hands are dry, moisten them using a damp cloth before taking the measurement.
If the ECG electrodes are dirty, remove the dirt using a soft cloth or cotton bud dampened with
disinfectant alcohol.
During the measurement, do not touch your body with the hand with which you are taking the
measurement.
Please note that there must be no skin contact between your right and left hand. Otherwise, the
measurement cannot be taken correctly.
Stay still during the measurement, do not speak and hold the product still. Movements of any
kind will falsify the measurements.
If possible, take the measurement when sitting and not when standing.
3.3.2 Measurement process
1.Press to power on the product and touch the electrodes to start measuring ECG.
Method A: Lead I, right hand to left hand
Method B: Lead II, right hand to left abdomen
2.Keep touching electrodes gently for 30 seconds.

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3.When the bar if fully filled, the product will show the measurement result.
4.Press the memory button to review historical data.
Note:
Do not press the product too firmly against your skin, which may result in EMG (electromyograph)
interference.
The device can store maximum 10 records for ECG data. The oldest record will be overwritten
when the 11th record is coming in. Please uploading data in time.
ECG Measurement Principle
The product collects the ECG data through the potential difference of the body surface through the
ECG electrode, and obtains accurate ECG data after being amplified and filtered, then displays through
the screen.
Irregular beat: If the change speed of heart rate exceeds a certain threshold during measurement, is
judged as irregular heartbeat.
High HR: The heart rate ＞120 /min
Low HR: The heart rate ＜50 /min
If the measurement results do not meet the “Irregular beat”,“High HR”and “Low HR”, then judge the
“Regular beat”.
3.4 Bluetooth
The product Bluetooth will be enabled automatically only when the screen lights up.
1) Ensure the product screen is on to keep the product Bluetooth enabled.
2) Make sure the phone Bluetooth is enabled.
3) Select the product ID from the phone, then the product will be paired successfully with your
phone.
4) You can export the measured data including SYS, DIS, ECG data to your phone.
Note:
The Bluetooth technology is based on a radio link that offers fast and reliable data transmissions.
The Bluetooth uses a license-free, globally available frequency range in the ISM band-intended to
ensure communication compatibility worldwide.
The pairing and transmitting distance of wireless function is 1.5 meters in the normal. If the
wireless communication is delay or failure between the phone and the product, you will try to
narrow the distance between the phone and the product.

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The product can pair and transmit with the phone under the wireless coexistence environment
(e.g. microwaves, cell phones, routers, radios, electromagnetic anti-theft systems, and metal
detectors), but other wireless product may still interface with pairing and transmission between
the phone and the product under uncertain environment. If the phone and the product display
inconsistent, you may need to change the environment.
4. Trouble Shooting
Problem
Possible Cause
Recommended Action
The product
cannot pair.
The product is out of Bluetooth
range.
Verify product is in Bluetooth
range while being paired
(approximately 1.5 meters).
The radio frequency
interference (ex. microwave)
Conduct the pairing process away
from possible interference
source.
The product
doesn’t response
to the button
press.
The battery may be low.
Charge battery and try again.
The product is running in an
unexpected status.
Reset the product by press and
hold the button for 8s.
The device might be damaged.
Please contact your local
distributor.
Cannot get blood
pressure
measured results.
The measurement is
interrupted by arm movement
or unexpected bulb squeeze.
Keep arm still and don’t squeeze
the bulb during
deflating-measure phase.
There is an over-leakage of
press.
Check if the hose connection is
loose.
Cannot get ECG
measured results.
Hold the electrode is too loose.
Please hold the electrode
properly, and ensure no skin
contact between the right and
left hand.
The skin of hand is too dry.
Please keep the skin of hand a
little moist.
5. Accessories
Model
Description
540-00240-00
MICRO USB charge cable

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6. Specifications
Classifications
Degree of protection against
electrical shock
Type BF
Protection against electric shock
Internally powered equipment
Electro-magnetic Compatibility
Group I, Class B
Apply part
Cuff and ECG electrode
Environmental
Item
Operating
Storage
Temperature
5°C to 45°C
-25°C to 70°C
Relative humidity (non-condensing)
10% to 95%
10% to 95%
Barometric
700hPa to 1060 hPa
700hPa to 1060 hPa
Degree of dust & water resistance
IP22
Drop test
1.0 m
Physical
Size
135 mm×46mm×21mm (main unit)
Weight
about 220 g (main unit)
Cuff size
22-42 cm
Wireless connectivity
Built-in Bluetooth 4.0 BLE
Power Supply
Charge input
Micro USB, DC5V
Battery type
Rechargeable lithium-polymer battery
Charge time
2 hours
Blood Pressure
Technology
Oscillometric method
Pressure measurement range
0–300 mmHg
Pressure measurement accuracy
±3mmHg or 2%, whichever is greater.
Pulse rate range
40 to 200 /min
Pulse rate accuracy
±2 /min
Clinical accuracy
Meet ISO 81060-2:2013
ECG
Lead type
Integrated ECG electrodes
ECG channel
Single Channel
Measure mode
Continuous
Input impendence
≥10MΩ, 10Hz

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CMRR
>60 dB
Center Frequency
50/60 Hz
Linearity and dynamic range
10mV (Peak-to-valley)
Frequency response
0.67 to 40 Hz
Gain error (Max.)
±10%
HR measurement range
30 to 250 /min
Accuracy
±2 /min or ±2%, whichever is greater.
Memory
Capacity
BP2: up to 100 readings for Blood Pressure data
+ 10 records for ECG data.
BP2A: up to 100 readings for Blood Pressure data
Bluetooth RF
Frequency range
2.402-2.480 GHz
GFSK Modulation
Adaptive Frequency Hopping (AFH)
Wireless Quality of Service
(QoS)
Transmission Distance: 1.5m
Transmission Time:
≤0.5s for one Blood Pressure reading
≤10s for one ECG record
Data integrity: 100%
Network topology
Point-to-Point
Band width
1Mbps
Durable period
Expected service life
3 years
7. Maintenance and Cleaning
7.1 Maintenance
To protect your product from damage, please observe the following:
•Store the product and the components in a clean, safe location.
•Do not wash the product and any components or immerse them in water.
•Do not disassemble or attempt to repair the product or components.
•Do not expose the product to extreme temperatures, humidity, dust or direct sunlight.
•The cuff contains a sensitive air-tight bubble. Handle this carefully and avoid all types of straining
through twisting or buckling.
•Clean the product with a soft, dry cloth. Do not use petrol, thinners or similar solvent. Spots on the
cuff can be removed carefully with a damp cloth and soapsuds. The cuff must not be washed!

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•Do not drop the instrument or treat it roughly in any way. Avoid strong vibrations.
•Never open the product! Otherwise the manufacturer calibration becomes invalid!
7.2 Cleaning
The product can be repeatedly used. Please clean before reuse as follow:
•Clean the product with a soft, dry cloth with 70% alcohol.
•Do not use petrol, thinners or similar solvent.
•Clean the cuff carefully with cloth soaked 70% alcohol.
•The cuff must not be washed.
•Clean on the product and the arm cuff, and then let it air dry.
7.3 Disposal
Batteries and electronic instruments must be disposed of in accordance with the locally applicable
regulations, not with domestics waste.
8. FCC Statement
FCC ID: 2ADXK-8621
Any Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help.

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The device has been evaluated to meet general RF exposure requirement. The device can be used in
portable exposure condition without restriction.
9. Electromagnetic Compatibility
The product meets the requirements of EN 60601-1-2.
Warnings and Cautionary Advices
Using accessories other than those specified in this manual may result in increased
electromagnetic emission or decreased electromagnetic immunity of the equipment.
The product or its components should not be used adjacent to or stacked with other equipment.
The product needs special precautions regarding EMC and needs to be installed and put into
service according to the EMC information provided below.
Other products may interfere with this product even though they meet the requirements of
CISPR.
When the inputted signal is below the minimum amplitude provided in technical specifications,
erroneous measurements could result.
Portable and mobile communication equipment may affect the performance of this product.
Other products that have RF transmitter or source may affect this product (e.g. cell phones, PDAs,
and PCs with wireless function).
Guidance and Declaration - Electromagnetic Emissions
The Blood Pressure Monitor is intended for use in the electromagnetic environment specified
below. The customer or the user of the Blood Pressure Monitor should assure that it is used in
such an environment.
Emission tests
Compliance
Electromagnetic environment - guidance
RF emissions CISPR 11
Group 1
The Blood Pressure Monitor 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 emissions CISPR 11
Class B
The Blood Pressure Monitor is suitable for use in all
establishments, including domestic establishments
and those directly connected to the public
low-voltage power supply network that supplies
buildings used for domestic purposes.
Harmonic emissions
IEC61000-3-2
N/A
Voltage Fluctuations /
Flicker Emissions IEC
61000-3-3
N/A
Guidance and Declaration - Electromagnetic Immunity

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The Blood Pressure Monitor is intended for use in the electromagnetic environment specified
below. The customer or the user of the Blood Pressure Monitor should assure that it is used in
such an environment.
Immunity test
IEC60601 test level
Compliance
level
Electromagnetic
environment - guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±8kV contact
±2kV, ±4kV, ±8kV, ±15kV
air
±8kV contact
±2kV, ±4kV,
±8kV, ±15kV
air
Floors should be wood,
concrete or ceramic tile. If
floors are covered with
synthetic material, the
relative humidity should be
at least 30%.
Electrical fast
transient/ burst
IEC 61000-4-4
±2kV for power
supply lines
100kHz repetition
frequency
±1kV for input/output
lines
N/A
--
Surge
IEC 61000-4-5
±0.5kV, ±1kV differential
mode line-line
N/A
--
Voltage dips, short
Interruptions and
Voltage variations
on power supply
input lines
IEC 61000-4-11
0% UT
(100% dip in UT)
for 0.5 cycle at 0°, 45°,
90°, 135°,180°, 225°,
270°, and 315°
0% UT
(100% dip in UT)
for 1 cycle at 0°
70% UT
(30% dip in UT)
for 25/30 cycles at 0°
0% UT
(100% dip in UT)
for 250/300 cycles at 0°
N/A
--
Power frequency
(50/60 HZ)
magnetic field IEC
61000-4-8
30 A/m, 50/60Hz
30 A/m,
50/60Hz
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.
Note: UTis the AC mains voltage prior to application of the test level.
Guidance and Declaration - Electromagnetic Immunity
The Blood Pressure Monitor is intended for use in the specified electromagnetic environment.
The customer or the user of the Blood Pressure Monitor should assure that it is used in such an
environment as described below.
Immunity test
IEC60601 test level
Compliance
level
Electromagnetic
environment - guidance
Conduced RF
IEC61000-4-6
3Vrms
150kHz to 80 MHz
N/A
Portable and mobile RF
communications equipment

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6Vrms 150 kHz to 80
MHz outside ISM bands
should be used no closer to
any part of the system,
including cables, than the
recommended separation
distance calculated from the
equation appropriate for the
frequency of the transmitter.
Recommended separation
distances:
P
V
d






1
5.3
P
E
d






1
5.3
80MHz to 800MHz
P
E
d






1
7
800MHz to 2.7GHz
Where, Pis the maximum
output power rating of the
transmitter in watts (W)
according to the transmitter
manufacturer and dis the
recommended separation
distance in meters (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:
Radiated RF
IEC61000-4-3
10V/m
80MHz to 2.7 GHz
10 V/m
Note 1: At 80 MHz to 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.
a The ISM (industrial, scientific and medical) bands between 0,15 MHz and 80 MHz are 6,765 MHz
to 6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70
MHz. The amateur radio bands between 0,15 MHz and 80 MHz are 1,8 MHz to 2,0 MHz, 3,5 MHz
to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to 7,3 MHz, 10,1 MHz to 10,15 MHz, 14 MHz to 14,2 MHz,
18,07 MHz to 18,17 MHz, 21,0 MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz, 28,0 MHz to 29,7 MHz
and 50,0 MHz to 54,0 MHz.
b The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the
frequency range 80 MHz to 2,7 GHz are intended to decrease the likelihood that mobile/portable
communications equipment could cause interference if it is inadvertently brought into patient
areas. For this reason, an additional factor of 10/3 has been incorporated into the formulae used
in calculating the recommended separation distance for transmitters in these frequency ranges.
c 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

18
to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured
field strength in the location in which the Blood Pressure Monitor is used exceeds the applicable
RF compliance level above, the Blood Pressure Monitor should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the Blood Pressure Monitor.
d Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications
equipment and the Blood Pressure Monitor
The Blood Pressure Monitor is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the Blood Pressure Monitor
can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the Blood Pressure
Monitor as recommended below, according to the maximum output power of the
communications equipment.
Rated max. output
power of transmitter
(W)
Separation distance according to frequency of the transmitter (m)
150kHz to 80MHz
P
V
d]
5.3
[
1

80MHz to 800MHz
P
E
d]
5.3
[
1

800MHz to 2.7GHz
P
E
d]
7
[
1

0.01
0.12
0.04
0.07
0.1
0.37
0.12
0.23
1
1.17
0.35
0.70
10
3.70
1.11
2.22
100
11.70
3.50
7.00
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters (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.

19
PN：255-01761-00 Version: A Oct, 2019
Shenzhen Viatom Technology Co., Ltd.
4E,Building 3, Tingwei Industrial Park, No.6
Liufang Road, Block 67, Xin’an Street,
Baoan District, Shenzhen 518101 Guangdong
China
www.viatomtech.com
[e-mail]