RF Exposure

FCC ID: RI7XE61

RF Exposure Info

Download: PDF
FCCID_2058742

             Alcon Laboratories, Inc.
            Model: Centurion® Footswitch

                 Report No. ALCO0180.2
     FCC 2.1091: Maximum Permissible Exposure Level




           Report Prepared By Northwest EMC Inc.



NORTHWEST EMC – (888) 364-2378 – www.nwemc.com

California – Minnesota – Oregon – New York – Washington


                                                                          22975 NW Evergreen Parkway
                                                                                              Suite 400
                                                                               Hillsboro, Oregon 97124

                                      Certificate of Evaluation
                                    Date of Evaluation August 26, 2013
                                         Alcon Laboratories, Inc.
                                     Model: Centurion ® Footswitch

Emissions
Description of Evaluation              Specification         Evaluation Method                                  Pass/Fail

Maximum Permissible Exposure           FCC 2.1091:2013       OET Bulletin 65, Supplement C Ed 01-01                Pass




Approved By:


Don Facteau, IS Manager
                                                                                  NVLAP Lab Code: 200630-0


This report must not be used to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the
federal government of the United States of America.

Product compliance is the responsibility of the client, therefore the tests and equipment modes of operation represented in
this report were agreed upon by the client, prior to testing. This Report may only be duplicated in its entirety. The results of
this test pertain only to the sample(s) tested. The specific description is noted in each of the individual sections of the test
report supporting this certificate of test.




Report No. ALCO0180.2                                                                                                     2/9


                                  REVISION HISTORY
REV 2012.05.24




Revision
                              Description    Date    Page Number
Number


00               None




      Report No. ALCO0180.2                                        3/9


                                                ACCREDITATIONS AND
REV 2012.05.24
                                                AUTHORIZATIONS
United States
        FCC - Designated by the FCC as a Telecommunications Certification Body (TCB). Certification chambers, Open Area Test Sites, and
        conducted measurement facilities are listed with the FCC.
        A2LA - Accredited by A2LA to ISO / IEC Guide 65 as a product certifier.   This allows Northwest EMC to certify transmitters to FCC
        and IC specifications.
        NVLAP - Each laboratory is accredited by NVLAP to ISO 17025

Canada
        IC - Recognized by Industry Canada as a Certification Body (CB).   Certification chambers and Open Area Test Sites are filed with IC.


European Union
        European Commission – Validated by the European Commission as a Conformity Assessment Body (CAB) under the EMC
        directive and as a Notified Body under the R&TTE Directive.


Australia/New Zealand
        ACMA - Recognized by ACMA as a CAB for the acceptance of test data.

Korea
        KCC / RRA - Recognized by KCC’s RRA as a CAB for the acceptance of test data.

Japan
        VCCI - Associate Member of the VCCI.    Conducted and radiated measurement facilities are registered.


Taiwan
        BSMI – Recognized by BSMI as a CAB for the acceptance of test data.
        NCC - Recognized by NCC as a CAB for the acceptance of test data.

Singapore
        IDA – Recognized by IDA as a CAB for the acceptance of test data.

Hong Kong
        OFTA – Recognized by OFTA as a CAB for the acceptance of test data.

Vietnam
        MIC – Recognized by MIC as a CAB for the acceptance of test data.

Russia
        GOST – Accredited by Certinform VNIINMASH, CERTINFO, SAMTES, and Federal CHEC to perform EMC and Hygienic testing for
        Information Technology products to GOST standards.




                                                               SCOPE
                                  For details on the Scopes of our Accreditations, please visit:
                                             http://www.nwemc.com/accreditations/




      Report No. ALCO0180.2                                                                                                            4/9


                                                 LOCATIONS
REV 2013.01.07




Oregon                            California                  New York             Minnesota                 Washington
Labs EV01-12                      Labs OC01-13                Labs WA01-04         Labs MN01-08              Labs NC01-05,SU02,SU07
22975 NW Evergreen Pkwy           41 Tesla                    4939 Jordan Rd.      9349 W Broadway Ave.      19201 120th Ave. NE
Hillsboro, OR 97124               Irvine, CA 92618            Elbridge, NY 13060   Brooklyn Park, MN 55445   Bothell, WA 98011
(503) 844-4066                    (949) 861-8918              (315) 685-0796       (763) 425-2281            (425) 984-6600
                                                                    VCCI
A-0108                            A-0029                                           A-0109                    A-0110
                                                              Industry Canada
2834D-1, 2834D-2                  2834B-1, 2834B-2, 2834B-3                        2834E-1                   2834C-1




          Report No. ALCO0180.2                                                                                              5/9


                                      PRODUCT DESCRIPTION
 WTD 12.5.23




Client and Equipment Under Test (EUT) Information
Company Name:                       Alcon Laboratories, Inc.
Address:                            20511 Lake Forest Drive
City, State, Zip:                   Lake Forest, CA 92630
Test Requested By:                  Thai Lam
Model:                              Centurion® Footswitch

Information Provided by the Party Requesting the Test

Functional Description of the EUT (Equipment Under Test):
The Centurion® Vision System utilizes the Centurion® Vision System footswitch. It has a foot pedal and on/off
toe switches (horizontal and vertical). The Centurion® footswitch can be used wirelessly or can be wired to the
console. The footswitch contains radio transmitter module and operates in the frequency band of 2.4 GHz.

Testing Objective:
To demonstrate compliance with FCC requirements for RF exposure for 2.1091 mobile devices




     Report No. ALCO0180.2                                                                                 6/9


                                       Maximum Permissible Exposure (MPE)
WD.12.29.11




OVERVIEW

Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE
limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since
exposures are assumed to occur at distances of 20 cm or more from persons. ANSI C95.1-1992 specifies a
minimum separation distance of 20 cm for performing reliable field measurements to determine adherence to
MPE limits. If the minimum separation distance between a transmitter and nearby persons is more than 20 cm
under normal operating conditions, compliance with MPE limits may be determined at such distance from the
transmitter. When applicable, operation instructions and prominent warning labels may be used to alert the
exposed persons to maintain a specified distance from the transmitter or to limit their exposure durations and
usage conditions to ensure compliance. If the use of warning labels on a transmitter is not effective or desirable,
the alternative of performing SAR evaluation with the device at its closest range to persons under normal
operating conditions may be used. The field strength and power density limits adopted by the FCC are based on
whole-body averaged exposure and the assumption of RF field levels relate most accurately to estimating
whole-body averaged SAR. This means some local values of exposures exceeding the stated field strength and
power density limits may not necessarily imply non-compliance if the spatial average of spatially averaged RF
fields over the exposed portions of a person’s body does not exceed the limits.

COMPLIANCE WITH 2.1091

 “Mobile devices that operate in the Cellular Radiotelephone Service, the Personal Communications Services,
the Satellite Communications Services, the General Wireless Communications Service, the Wireless
Communications Service, the Maritime Services and the Specialized Mobile Radio Service authorized under
subpart H of part 22 of this chapter, parts 24, 25, 26 and 27 of this chapter, part 80 of this chapter (ship earth
stations devices only) and part 90 of this chapter are subject to routine environmental evaluation for RF
exposure prior to equipment authorization or use if they operate at frequencies of 1.5 GHz or below and their
effective radiated power (ERP) is 1.5 watts or more, or if they operate at frequencies above 1.5 GHz and their
ERP is 3 watts or more. Unlicensed personal communications service devices, unlicensed millimeter wave
devices and unlicensed NII devices authorized under §§15.253, 15.255, and 15.257, and subparts D and E of
part 15 of this chapter are also subject to routine environmental evaluation for RF exposure prior to equipment
authorization or use if their ERP is 3 watts or more or if they meet the definition of a portable device as specified
in §2.1093(b) requiring evaluation under the provisions of that section. All other mobile and unlicensed
transmitting devices are categorically excluded from routine environmental evaluation for RF exposure prior to
equipment authorization or use, except as specified in §§1.1307(c) and 1.1307(d) of this chapter. Applications
for equipment authorization of mobile and unlicensed transmitting devices subject to routine environmental
evaluation must contain a statement confirming compliance with the limits specified in paragraph (d) of this
section as part of their application.”

The EUT will only be used with a separation distance of 20 centimeters or greater between the antenna
and the body of the user or nearby persons and can therefore be considered a mobile transmitter per 47
CFR 2.1091(b). Per 47 CFR 1.1310, the EUT meets the General Population / Uncontrolled exposure limits
listed in Table 1.

COMPLIANCE WITH FCC KDB 447498 D01 General RF Exposure Guidance V05

The 802.15.4 based radio located within the product operates in the 2.4GHz ISM band. The radio transmits
through its own antennas and is not co-located with any other radio.

"KDB 447498 D01 General RF Exposure Guidance v05" provides the procedures, requirements, and
authorization policies for mobile and portable devices. Section 7.1 best fits the exposure condition described in
this report. Since this mobile device is categorically excluded from routine evaluation; simple calculations may
be used to estimate the power density to demonstrate compliance with 47 CFR 1.1310 requirements. The
attached estimate shows MPE limits are met at a 20 cm boundary.



      Report No. ALCO0180.2                                                                                    7/9


                                          Maximum Permissible Exposure (MPE)
WD.12.29.11




FCC LIMITS FOR MPE
Limits for General Population /Uncontrolled Exposure: 47 CFR 1.1310


                              Electric Field    Magnetic Field
  Frequency Range               Strength          Strength           Power Density        Averaging Time
        (MHz)                     (V/m)            (A/m)               (mW/cm2)             (minutes)
      0.3 - 1.34                   614              1.63                 *(100)                 30
      1.34 - 30                   824/f            2.19/f               *(180/f2)               30
      30 - 300                     27.5            0.073                   0.2                  30
     300 - 1500                                                          f/1500                 30
    1500 - 100000                                                           1                   30

f = frequency in MHz
* = Plane-wave equivalent power density

METHOD OF EVALUATION

The exposure level for the radio is evaluated at a 20 cm distance from the radio’s transmitting antenna using the
general equation:

                                                P *G
                                     S 
                                               4* * R       2



Where: S = power density (mW/cm2)
P = power input to the antenna (mW)
G = numeric power gain relative to an isotropic radiator
R = distance to the center of the radiation of the antenna (20 cm = limit for MPE estimates)
P*G = EIRP

Solving for S, the maximum power density 20 cm from the transmitting antenna is determined.




      Report No. ALCO0180.2                                                                                8/9


                                                      Maximum Permissible Exposure (MPE)
WD.12.29.11




EUT:                       Centurion® Footswitch                                                                      Work Order:                    ALCO0180
Serial Number:             NA                                                                                         Date:                          8/26/13
Customer:                  Alcon Laboratories, Inc.                                                                   Temperature (°C):              NA
Attendees:                 N/A                                                                                        Rel. Humidity (%):             NA
Customer Project:          N/A                                                                                        Bar. Pres. (mb):               NA
Evaluated By:              Rod Peloquin                           Power:       NA                                     Job Site:                      EV
TEST SPECIFICATIONS
Specification:                                                                              Method:
FCC 2.1091:2013                                                                             OET Bulletin 65, Supplement C Ed 01-01

COMMENTS
See Product Description
DEVIATIONS FROM TEST STANDARD
None




Signature


MPE Estimates for Individual Devices


                                                                                                                                                           General
                                                                                                         Duty Cycle
                                                                              Max Peak                                           Minimum   Power          Population
                                   Antenna                        Transmit                               Corrected    Antenna
       Radio     Antenna Type                 Antenna Part No.                Conducted     Duty Cycle                           Antenna Density @ 20     Exposure
                                 Manufacturer                    Frequency                                Output       Gain
                                                                             Output Power                                       Cable Loss   cm           Limit from
                                                                                                           Pow er
                                                                                                                                                            1.1310

                                                                   (MHz)        (mW)                       (mW)        (dBi)       (dB)    (mW/cm2)       (mW/cm2)
                                                WPC25A with
   2.4 GHz DTS   Ceramic Patch     Taoglas                         2405          119            1           119          5          0        0.075          1.000
                                                  MMCX




      Report No. ALCO0180.2                                                                                                                                    9/9



Document Created: 2013-08-26 16:05:42
Document Modified: 2013-08-26 16:05:42

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