User Manual

FCC ID: 2AOJNBS-1507

Users Manual

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FCCID_4157314

Welch Allyn Home"Y? Scale



                                            Py




Directions for use
901077 Weight scale, Software Version 1.0




                                     WelchAllyn_


© 2017 Welch Allyn. All rights are reserved. To support the intended use of the product described in this
publication, the purchaser of the product is permitted to copy this publication, for internal distribution
only, from the media provided byWelch Allyn. No other use, reproduction, or distribution of this
publication, or any part of it, is permitted without written permission from Welch Allyn.

Welch Allyn Home Scale is a trademark of Welch Allyn.

Welch Allyn assumes no responsibility for any injury to anyone, or for any illegal or improper use of the
product, that may result from failure to use this product in accordance with the instructions, cautions,
warnings, or statement of intended use published in this manual.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any
use of such marks by Welch Allyn is under license.

Software in this product is © 2017 Welch Allyn or its vendors. All rights are reserved. The software is
protected by United States of America copyright laws and international treaty provisions applicable
worldwide. Under such laws, the licensee is entitled to use the copy of the software incorporated with
this instrument as intended in the operation of the product in which it is embedded. The software may
not be copied, decompiled, reverse-engineered, disassembled, or otherwise reduced to human-
perceivable form. This is not a sale of the software or any copy of the software; all right, title, and
ownership of the software remain with Welch Allyn or its vendors.

For information about any Welch Allyn product, contact your local Welch Allyn representative:
www.welchallynhome.com/support.htm.


        726196                                       This manual applies to   901077 Weight scale.

DIR 80021989 Ver. B Revised 2017–02

Manufactured for Welch Allyn, Inc.

4341 State Street Road

Skaneateles Falls, NY 13153 USA

www.welchallynhome.com


                                                                                                                                       iii




Contents
      Introductory information ........................................................................ 1
               Introduction .......................................................................................................... 1
               Symbols ............................................................................................................... 1
               About warnings and cautions ............................................................................... 3
               Content list ........................................................................................................... 4
               Controls and indicators ........................................................................................ 4
               Screen elements .................................................................................................. 5

      Use the scale ............................................................................................ 7
               Startup ................................................................................................................. 7
               Insert or replace the batteries .............................................................................. 7
               Install the carpet feet ........................................................................................... 7
               Pair a smartphone, a tablet, or a communication hub with the scale .................. 8
               Select the measurement unit .............................................................................. 8
               Ensure accurate measurements .......................................................................... 8
               Obtain measurement ........................................................................................... 9
               Stop a measurement ........................................................................................... 9
               Maintain the scale ................................................................................................ 9
               Troubleshooting .................................................................................................. 9

      Appendices ............................................................................................ 13
               Specifications ..................................................................................................... 13
               General radio compliance ................................................................................... 14
               Complied standards list ...................................................................................... 15
               Emissions and immunity information ................................................................. 16
               Warranty ............................................................................................................ 19
               Approved accessories ........................................................................................ 20


iv   Contents   Welch Allyn Home™ Scale


                                                                                                                              1




Introductory information
Introduction
           The Welch Allyn HomeTM Scale is intended for adults and children (10-17 years old) to
           measure weight in a home environment.

           This Directions for use contains important safety and care information and provides step
           by step instructions for using the scale. Read the manual thoroughly before using the
           scale.

           For information about any Welch Allyn product, contact Welch Allyn Home technical
           support at www.welchallynhome.com/support.htm.


Indications for use
           The Welch Allyn Home Scale is intended for adults and children (10–17 years old) to
           measure weight in the home.


Contraindications
           This device is contraindicated for any person who is connected to a wearable or
           implantable electronic device or instrument, such as a pacemaker or defibrillator.

Symbols
Documentation symbols
                       Warning: The warning statements in this manual identify conditions or practices that could lead to
                       illness, injury, or death. Warning symbols will appear with a grey background in a black and white
                       document.


                       Caution: The caution statements in this manual identify conditions or practices that could result in
                       damage to the equipment or other property, or loss of data.


                       Mandatory - Consult Directions for Use


2   Introductory information                                                                 Welch Allyn Home™ Scale




Power symbols
                                           Direct current (DC)




Shipping, storing, and environment symbols
                               Humidity limitation                                               Separate collection of
                                                                                                 Electrical and Electronic
                                                                                                 Equipment. Do not
                                                                                                 dispose as unsorted
                                                                                                 municipal waste.

                               Temperature limit                                                 Atmospheric pressure
                                                                                                 limitation



                               Recycle                                                           Stacking limit by number




Connectivity symbols
                               Bluetooth® wireless technology enabled




Miscellaneous symbols
                               Serial number                                                Manufacturer




                               Product identifier, product family catalogue number          Non-ionizing electromagnetic
                                                                                            radiation



                               Reorder number, Model number                                 Global Trade Item Number



                    IP22       The ingress protection: the device could protected against   Type BF applied parts
                               solid foreign objects of 12.5mm and greater, and against
                               vertically falling water drops when ENCLOSURE tilted up
                               to 15°


Directions for use                                                                       Introductory information   3




About warnings and cautions
                     Caution statements can appear on the Welch Allyn Home Scale device, packaging,
                     shipping container, or in this Directions for use.

                     The Welch Allyn Home Scale is safe for users when used in accordance with the
                     instructions and caution statements presented in this Directions for use.

                     Before using the device, you must familiarize yourself with all cautions, with the steps to
                     power up the device, and with the sections of this Directions for use that pertain to your
                     use of the device. In addition to reviewing the general cautions presented in the next
                     section, you must also review the more specific cautions that appear throughout the
                     manual in conjunction with setup/startup, operation, and maintenance tasks.
                     •   Failure to understand and observe any warning statement in this manual could lead
                         to injury or illness.
                     •   Failure to understand and observe any caution statement in this manual could lead to
                         damage to the equipment or other property, or loss of data.


General warnings and cautions
                                  Warning Injury risk. Do not use the scale on a slippery floor, such as tile.

                                  Warning Injury risk. Do not jump onto the platform immediately after
                                  bathing or with wet hands.

                                  Warning Injury risk. Dispose of accessories, detachable parts, and the
                                  device according to the local guidelines.

                                  Warning Injury risk. No modification of this equipment is allowed.
                                  Modifying the equipment could damage the device or cause injury.

                                  Warning Injury risk. Do not touch output of the batteries and the user
                                  simultaneously.

                                  Warning Injury risk. Before use, make sure the device functions safely and
                                  is in proper working condition. Failure to do so could damage the device or
                                  cause injury.

                                  Warning Possible injury risk. The device contains small parts. Keep the
                                  device away from children and pets.

                                  CAUTION Avoid storing the device where the device may be exposed to
                                  extreme temperatures, humidity, moisture, direct sunlight, dust, or salt air.

                                  CAUTION Avoid storing the device where there is risk of shock or
                                  dropping.

                                  CAUTION Avoid storing the device where you store chemicals.

                                  CAUTION Avoid storing the device where there are corrosive gases.

                                  CAUTION Avoid storing the device near infants or children.


4   Introductory information                                                                  Welch Allyn Home™ Scale




                                        CAUTION Do not attempt to repair the unit yourself in the event of
                                        malfunctions. Only have repairs carried out by authorized service centers.

                                        CAUTION Do not use rechargeable batteries.

                                        CAUTION Use the scale in the environment described in this Directions
                                        for use. Using the scale in other environments will compromise the
                                        performance of the scale and reduce the lifetime of the scale.

Content list
                    The following items are in the device box:
                    •        Home Scale
                    •        (4) AAA alkaline batteries (1.5V each)
                    •        (4) extension feet for use on carpet
                    •        Directions for use

Controls and indicators
                    The Welch Allyn Home scale is simple to use.


Scale top




                        No. Feature                                 Description

                         1     LCD display                          Displays measurement


Directions for use                                                                                           Introductory information         5




                      No. Feature                                         Description

                          2   UNIT / Power button                         The button enables you to select kg or lb unit measure. Press and
                                                                          hold for 3 seconds to enter pairing mode.

                          3   Battery compartment (behind cover)          Houses (4) AAA alkaline batteries (1.5V each)

                          4   Sensors (4)                                 4 load cell sensors which conduct weight measurement



Screen elements
                     The liquid crystal display (LCD) display registers the measurement. The display also may
                     show other icons that provide information about the functionality of the scale.




                     Icon                            Description                 Icon                    Description

                     kg                              Kilogram                    lb                      Pound

                                                     Low battery charge                                  Full battery charge




                                                     Bluetooth wireless                                  Bluetooth wireless technology
                                                     technology is powered on                            connected (dotted area is not
                                                                                                         flashing)


                                                     Data being transferred                              Scale not paired with device
                                                     using Bluetooth wireless
                                                     technology (dotted area
                                                     flashes)


6   Introductory information   Welch Allyn Home™ Scale


                                                                                                       7




Use the scale
Startup
          The Welch Allyn Home scale uses SENSE ON™ technology to turn on the scale. Step on
          the scale with bare feet to begin a measurement.

Insert or replace the batteries

                        CAUTION When the                  symbol appears, the device will power off
                        in four seconds. Replace the old batteries with a new set of four batteries.
                        Always replace all four batteries with new batteries. Do NOT mix old
                        batteries with new batteries.

                        CAUTION Remove the batteries if the device is not to be used for some
                        time.

                        CAUTION Dispose old batteries by following your local recycling
                        guidelines.

                        CAUTION Do not burn batteries. Batteries may leak or explode.

          1. Open the battery door on the under side of the scale.
          2. Insert the four AAA alkaline batteries (1.5V each) into the battery compartment
             according to the polarity indications marked inside the battery compartment.
          3. Close the battery door.
          4. Wait until the digits “0.0lb”appear on the LCD screen.

Install the carpet feet
          Install the carpet feet if you use the device on carpet to avoid the device slipping.
          1. Peel off and removethe rubber stickers on the four corner posts.
          2. Remove the four carpet feet from the packaging.
          3. Insert the carpet feet prongs into the posts.


8   Use the scale                                                                        Welch Allyn Home™ Scale




Pair a smartphone, a tablet, or a communication hub with
the scale
                    Advanced Bluetooth 4.0 technology enables your smartphone, tablet, or a
                    communication hub to receive your personal health information from your device. You
                    have two alternatives to pair your device with these devices.

                    •   If you are using the Welch Allyn Home application, follow the pairing instructions
                        presented in the application.
                    •   Contact your Remote Monitoring Solution provider or use the instructions that office
                        provided to set up these communications devices.

                    With either alternative, you complete the same steps on the Home scale.

                    1. Confirm that both the smart device and the Home scale are powered on.

                        Note          Bluetooth wireless connectivity is only available for devices
                                      which support Bluetooth 4.0 technology.

                    2. Press and hold the Unit / Power button on the bottom of the scale for 3 seconds.
                        The Bluetooth pairing sequence is activated. The dotted line surrounding the
                        Bluetooth symbol flashes while discovering the weight scale.



                    If successful, a steady      symbol surrounded by a dotted line appears on the scale's

                    LCD screen. If unsuccessful, the       appears.

Select the measurement unit
                    The default measurement unit is pound (lb).

                    Press the Unit / Power button on the bottom of the scale to change from pound (lb)
                    to kilogram (kg).

Ensure accurate measurements
                    To ensure the accuracy of measurements, follow the recommendations below when you
                    start a measurement.
                    •   Place the scale on a flat, hard surface for at least 10 seconds. Obtaining the
                        measurement immediately after placing the scale on a flat, hard surface may affect
                        the accuracy of the measurement.
                    •   If you place the scale on carpet, fit the extension feet before taking the
                        measurement. Placing the scale sensors directly on carpet may affect the accuracy
                        of the measurement.
                    •   Always start a measurement at the same time on the same scale located on the
                        same flat surface.


Directions for use                                                                               Use the scale   9




Obtain measurement
                     With the original SENSE ON patent technology, the scale automatically powers on when
                     you step on the platform in your bare feet.

                     1. Step on the platform in your bare feet.
                         The scale automatically powers on and begins the measurement.
                     2. Stand still and keep full contact with the scale until the LCD stops blinking and
                        displays the weight.

Stop a measurement
                     You can stop a measurement before it is complete.
                     Step off the platform.
                     The scale returns to a ready / zero state.

                     After approximately 2 seconds, the scale powers down automatically.

Maintain the scale
                                   Warning Injury risk. Keep the device clean. Contact with a contaminated
                                   device can spread infection. Clean the device after each use.

                     Note          The Home scale does not require calibration.
                     To get the best performance from your Home scale, follow the maintenance steps
                     below.
                     •   Store the device in a dry place away from direct sunlight.
                     •   Avoid shaking and dropping the device
                     •   Avoid operating the device in dusty and unstable temperature environments.


                                   CAUTION Use a soft cloth to clean the entire device. Do not use any
                                   abrasive or volatile cleaners.
                     The following agents are compatible with the device:
                     •   70 percent isopropyl alcohol
                     •   10 percent chlorine bleach/90 percent water solution

                     1. Clean the Home scale only when necessary with one of the compatible cleaning
                        agents listed above.
                     2. If necessary, wipe the device with a soft, damp cloth.

Troubleshooting
                     This section includes a list of error messages and frequently asked questions for
                     problems you may encounter with your Home scale. If the device is not operating as you
                     think it should, check here before arranging for servicing.


10   Use the scale                                                                                                Welch Allyn Home™ Scale




Error prompt
                     Error                                    Description                              Solution

                     Dotted lines                             Overload. The device will power off      Weight exceeds scale maximum

                                                              Low Battery. The device will power off Replace all four batteries at the same
                                                              in four seconds.                       time. Purchase the authorized batteries
                                                                                                     for replacement.



                     Error condition                          At any point, when a situation occurs    Check the following items:
                                                              that prevents a successful test          • Bluetooth wireless technology is
                                                              acquisition, an error code will be            on.
                                                              displayed in the LCD area. The           • The application is on.
                                                              message will persist for several         • Both devices are within the
                                                              seconds until the device times out and        transmission distance of
                                                              powers down.                                  Bluetooth devices.


                     E02                                      Movement while weighing                  Remain motionless while weighing

                     Weight fluctuates                        Placement on scale is improper           Place scale on hard ground, then weigh
                                                                                                       again after returning scale to 0.0 kg.

                                                              Moved scale                              Place scale on hard ground, then weigh
                                                                                                       again after returning scale to 0.0 kg.

                     Cannot power on scale                    Batteries inserted improperly            Move scale and insert batteries.
                                                                                                       Reboot the scale and weigh again.

                     Scale halted                             Electrostatic interference               Move scale and insert batteries.
                                                                                                       Reboot the scale and weigh again.



When measuring
                     Problem                                  Root cause                               Solution

                     No display on the LCD screen or display Batteries are not installed or not        Install the batteries. Go to "Insert or
                     flickers with the scale powers on       installed properly                        replace the batteries"

                                                              Worn batteries                           Replace all four batteries at the same
                                                                                                       time. Purchase the authorized batteries
                                                                                                       for replacement.

                     The scale powers off automatically       Low Battery.                             Replace all four batteries at the same
                                                                                                       time. Purchase the authorized batteries
                                                                                                       for replacement.

                     "Bat" symbol appears for 3 seconds       No batteries                             Replace all four batteries at the same
                     then the scale powers off                                                         time. Purchase the authorized batteries
                                                                                                       for replacement.

                     Measurement fluctuates by several        Scale was not placed on a hard, flat     Place the scale on a hard, flat surface
                     pounds from last measurement             surface for at least 10 seconds before   for at least 10 seconds before stepping
                                                              obtaining measurement


Directions for use                                                                                           Use the scale        11




                     Problem                    Root cause                              Solution
                                                                                        onto the scale to begin the
                                                                                        measurement



When transmitting data
                     Problem                    Root cause                              Solution

                     Data transmission failed   Bluetooth wireless technology is off    Turn on the Bluetooth wireless
                                                                                        technology via the Settings.

                                                Application is off                      Press the icon to run your application.


                                                Out of range of Bluetooth transmission. Place your mobile or portable device
                                                                                        closer to the scale.


12   Use the scale   Welch Allyn Home™ Scale


                                                                                                                  13




Appendices
Specifications
        Warning: No modification of this equipment is allowed.

        Item                       Specification

        Power supply               6V 4*AAA alkaline batteries

        Display mode               Blue LCD with White Backlight V.A.: 74x53mm

        Measurement unit           Kilogram / Pound

        Measurement range          5kg to 200kg / 11lb to 441lb

        Resolution                 The measurement resolution          0–220 lb: 0.2lb
                                   shall be:                           220–440lb: 0.5lb
                                   0–100kg: 0.1kg
                                   100–200kg: 0.2kg

        Normal working condition   Temperature: 5℃ (41°F) to 40℃ Humidity: ≤ 85%RH
                                   (104°F)

                                   Atmospheric pressure: 86kPa to 106kPa

        Storage & transportation   Temperature:-20℃ (-4°F) to 60℃ Relative Humidity: 10% RH–93% RH
        condition                  (140°F)


                                   Atmospheric Pressure: 50kPa to 106 kPa

        Net Weight                 Approximately 2.75kg (6.1 lb.) ( Excluding the dry cells)

        Dimensions                 360mm x 408mm x 32.5mm (14.2inches x16.1inches x 1.3inches) with carpet feet

        Accessories                •    (4) AAA alkaline batteries
                                   •    (4) extension feet
                                   •    Directions for use


        Mode of operation          Continuous operation


14     Appendices                                                                                                     Welch Allyn Home™ Scale




                        Item                               Specification

                        Auto-ON                            SENSE ON technology

                        Auto-OFF                           About 15 seconds when showing 0.0
                                                           About 15 seconds after the weight data is locked

                        Degree of protection               Type BF applied part

                        Protection against ingress of      IP22
                        water

                        Software Version                   Version 1.0


General radio compliance
                        Item                                                          Specification

                        Bluetooth Module No.                                          AW51822

                        RF Frequency Range                                            2402 MHz to 2480 MHz

                        Output Power                                                  4.0 dBm

                        Supply Voltage                                                1.8-3.6 V

                        Antenna Gain                                                  0dBi

                        Transmitting Distance                                         10 meters, (30 feet)




FCC Statements:
 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. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or 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 technician for help.


     MODIFICATION: Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority
     to operate the device.


Directions for use                                                                                Appendices       15




Complied standards list
                     Item                              Standard

                     Risk management                   ISO/EN 14971 Medical devices — Application of risk
                                                       management to medical devices

                     Labeling                          ISO/EN 15223-1 Medical devices. Symbols to be used with
                                                       medical device labels, labeling and information to be
                                                       supplied. General requirements
                                                       Tested in accordance with ISO 10993 Biocompatibility

                     User manual                       EN 1041 Medical equipment manufacturers to provide
                                                       information

                     General Requirements for Safety   IEC 60601-1+A1 Medical electrical equipment - Part 1:
                                                       General requirements for basic safety and essential
                                                       performance
                                                       IEC 60601-1-11 Medical electrical equipment - Part 1-11:
                                                       General requirements for basic safety and essential
                                                       performance - Collateral standard: Requirements for

                     Item                              Standard
                                                       medical electrical equipment and medical electrical
                                                       systems used in the home healthcare environment

                     Electromagnetic compatibility     IEC/EN 60601-1-2 Medical electrical equipment - Part 1-2:
                                                       General requirements for basic safety and essential
                                                       performance - Collateral standard: Electromagnetic
                                                       compatibility - Requirements and tests

                     Software life-cycle processes     IEC/EN 62304+AC Medical device software - Software life
                                                       cycle processes

                     Usability                         IEC 62366 Medical devices - Application of usability
                                                       engineering to medical devices (IEC 62366)
                                                       IEC 60601-1-6 Medical electrical equipment - Part 1 -6 :
                                                       General requirements for basic safety and essential
                                                       performance - collateral standard : Usability


16   Appendices                                                                                             Welch Allyn Home™ Scale




Emissions and immunity information

                  The Welch Allyn Home Scale RPM-SCALE100 is intended for use in the electromagnetic
                  environment specified below. The customer or user of the Welch Allyn Home Scale
                  should assure that it is used in such an environment.

                  This equipment needs to be installed and put into service in accordance with the
                  information provided in the user manual.

                                   CAUTION Wireless communications equipment, such as wireless home
                                   network devices, mobile phones, cordless telephones and their base
                                   stations, walkie-talkie can affect this equipment and should be kept at least
                                   a distance d=3,3m away from the equipment.

                  Note             As indicated in Table 6 of IEC 60601-1-2:2007 for ME Equipment, a typical
                                   cell phone with a maximum output power of 2 W yields d=3,3m at an
                                   IMMUNITY LEVEL of 3V/m).

                                                           Electromagnetic emissions

                  The Welch Allyn Home Scale is intended for use in the electromagnetic environment specified below. The customer or
                  user of the Welch Allyn Home Scale should assure that it is used in such an environment.

                  Emissions test         Compliance             Electromagnetic environment - guidance

                  RF emissions           Group 1                The Welch Allyn Home Scale uses RF energy only for its internal
                  CISPR 11                                      function. Therefore, its RF emissions are very low and are not likely to
                                                                cause any interference in nearby electronic equipment.

                  RF emissions           Class B                The Welch Allyn Home Scale is suitable for use in all establishments
                  CISPR 11                                      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     Not applicable
                  IEC 61000-3-2


Directions for use                                                                                                             Appendices          17




                                                                  Electromagnetic emissions

                     Voltage fluctuations/    Not applicable
                     flicker emissions
                     IEC 61000-3-3



                                                                   Electromagnetic immunity

                     The Welch Allyn Home Scale is intended for use in the electromagnetic environment specified below. The customer or
                     the user of the Welch Allyn Home Scale should assure that it is used in such an environment.

                     Immunity test            IEC 60601 test level     Compliance level         Electromagnetic environment - guidance

                     Electrostatic discharge ±6 kV contact             ± 6 kV contact           Floors should be wood, concrete or ceramic
                     (ESD)                   ± 8 kV air                ± 8 kV air               tile. If floors are covered with synthetic
                     IEC 61000-4-2                                                              material, the relative humidity should be at
                                                                                                least 30%.

                     Electrical fast          ±2 kV for power supply ±2 kV for power supply Mains power quality should be that of a typical
                     transient/burst          lines                  lines                  commercial or hospital environment.
                     IEC 61000-4-4

                     Surge                    ± 1 kV line(s) to line(s) ± 1 kV differential     Mains power quality should be that of a typical
                     IEC 61000-4-5                                      mode                    commercial or hospital environment.


                     Voltage dips, short      <5% UT                   <5% UT                   Mains power quality should be that of a typical
                     interruptions and                                                          commercial or hospital environment. If the user
                     voltage variations on    (>95% dip in UT) for 0.5 (>95% dip in UT) for 0.5 of the Welch Allyn Home Scale requires
                     power supply input       cycle                    cycle                    continued operation during power mains
                     lines                                                                      interruptions, it is recommended that the
                     IEC 61000-4-11                                                             Welch Allyn Home Scale be powered from an
                                              40% UT                   40% UT
                                                                                                uninterruptible power supply or a battery.
                                              (60% dip in UT) for 5 (60% dip in UT)for 5
                                              cycles                   cycles

                                              70% UT                   70% UT
                                              (30% dip in UT) for 25   (30% dip in UT) for 25
                                              cycles                   cycles


                                              <5% UT                   <5% UT
                                              (>95% dip in UT) for 5   (>95% dip in UT) for 5
                                              seconds                  seconds

                     Power frequency          3A/m                     3A/m                     Power frequency magnetic fields should be at
                     (50Hz) magnetic field                                                      levels characteristic of a typical location in a
                     IEC 61000-4-8                                                              typical commercial or hospital environment.

                     Note: UT is the AC mains voltage prior to application of the test level.



                                                                   Electromagnetic immunity

                     The Welch Allyn Home Scale is intended for use in the electromagnetic environment specified below. The customer or
                     the user of the Welch Allyn Home Scale should assure that it is used in such an environment.


18   Appendices                                                                                                Welch Allyn Home™ Scale




                                                              Electromagnetic immunity

                  Immunity test           IEC 60601 test level     Compliance level         Electromagnetic environment - guidance

                                                                                            Portable and mobile RF communications
                                                                                            equipment should be used no closer to any part
                                                                                            of the Welch Allyn Home Scale, including
                                                                                            cables, than the recommended separation
                                                                                            distance calculated from the equation
                                                                                            applicable to the frequency of the transmitter.

                                                                                            Recommended separation distance

                  Conducted RF            3 Vrms                   3 Vrms                   d= (1.167)
                  IEC 61000-4-6           150 kHz to 80 MHz

                  Radiated RF             3 V/m 80 MHz to 1 GHz 3 V/m                       d= (1.167)        80 to 800 MHz
                  IEC 61000-4-3


                                                                                            d= (2.333)        800 MHz to 2,5 GHz

                                                                                            whereP is the maximum output power rating of
                                                                                            the transmitter in watts (W) andd is the
                                                                                            recommended separation distance in meters
                                                                                            (m). Field strengths from fixed RF transmitters,
                                                                                            as determined by an electromagnetic site
                                                                                            surveya, should be less than the compliance
                                                                                            level in each frequency rangeb. Interference
                                                                                            may occur in the vicinity of equipment marked
                                                                                            with the following symbol:




                  Note1: 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.
                  aField 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 Welch Allyn Home Scale is used exceeds the
                  applicable RF compliance level above, the Welch Allyn Home Scale should be observed to verify normal operation. If
                  abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Welch
                  Allyn Home Scale.
                  bOver 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 Welch Allyn Home Scale

                  The Welch Allyn Home Scale is intended for use in an electromagnetic environment in which radiated RF disturbances
                  are controlled. The customer or user of the Welch Allyn Home Scale can help prevent electromagnetic interference by
                  maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
                  Welch Allyn Home Scale as recommended below, according to the maximum output power of the communications
                  equipment.


Directions for use                                                                                                          Appendices       19




                     Recommended separation distances between portable and mobile RF communications
                     equipment and the Welch Allyn Home Scale

                                             Separation distance according to frequency of transmitter (m)

                     Rated max. output    150 kHz to 80 MHz          80 MHz to 800 MHz        800 MHz to 2.5 GHz
                     power of transmitter d= (1.167)                 d= (1.167)               d= (2.333)
                     (W)

                     0.01                    0.167                   0.167                    0.233

                     0.1                     0.369                   0.369                    0.738

                     1                       1.167                   1.167                    2.333

                     10                      3.690                   3.690                    7.338

                     100                     11.67                   11.67                    23.33

                     For transmitters rated at a maximum output power not listed above, the recommended separation distanced 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.



Warranty
                     Welch Allyn will warranty the Home Scale to be free of defects in material and
                     workmanship and to perform in accordance with manufacturer specifications for the
                     period of two years from the date of retail purchase.

                     The warranty period shall start on the date of purchase. The date of purchase is: 1) the
                     invoiced ship date if the device was purchased directly from Welch Allyn, 2) the date
                     specified during product registration, 3) the date of purchase of the product from a
                     Welch Allyn authorized distributor as documented from a receipt from said distributor.

                     This warranty does NOT cover damages caused by misuse or abuse, including but not
                     limited to:
                     •      Failure caused by unauthorized repairs or modifications
                     •      Damage caused by shock or dropping during transportation
                     •      Damage caused by improper use of the power supply
                     •      Failure caused by improper operation not consistent with the instructions stated in
                            this Directions for use
                     Should this device require maintenance (or replacement at our option) under warranty,
                     please deliver the original package to Welch Allyn prepaid. Please return the store receipt
                     (with the retail purchase date) and a note with the reasons for the return.


20   Appendices                                      Welch Allyn Home™ Scale




Approved accessories
                  Item             Description

                  RPM-SCALEACC-01 Carpet Feet 40EA





Document Created: 2019-02-01 16:37:13
Document Modified: 2019-02-01 16:37:13

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