NC11 Wireless Device RF Exposure Info Test Report_MPE Nest Labs Inc

Nest Labs Inc Wireless Device

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FCC MPE Evaluation Report
FCC MPE Evaluation Report
Report No.
: SA150127C26 R1
Applicant
: Nest Labs Inc.
Address
: 3400 Hillview Ave. Palo Alto California, United States 94304
Product
: Wireless Camera
Model No.
: A00005
Standards
Sample Received Date
: FCC Part 2 (Section 2.1091)
KDB 447498 D01
: Jan. 27, 2015
Date of Evaluation
: Mar. 02, 2015
CERTIFICATION: The above equipment have been tested by Bureau Veritas Consumer Products Services (H.K.)
Ltd., Taoyuan Branch – Lin Kou Laboratories, and found compliance with the requirement of the above standards.
The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and
accurate accounts of the measurements of the sample’s SAR characteristics under the conditions specified in this
report. It should not be reproduced except in full, without the written approval of our laboratory. The client should not
use it to claim product certification, approval, or endorsement by TAF or any government agencies.
Prepared By :
Vera Huang / Specialist
Approved By :
Gordon Lin / Assistant Manager
This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only
with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are
not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically
and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60
days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in
writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified
acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of
measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification.
Report Format Version 5.0.0
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: 1 of 8
Report No. : SA150127C26 R1
Issued Date
: Mar. 09, 2015
Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
FCC MPE Evaluation Report
Table of Contents
Release Control Record ............................................................................................................................................................... 3
1. Description of Equipment Under Test ................................................................................................................................. 4
2. MPE (Maximum Permissible Exposure) Assessment ......................................................................................................... 5
2.1
Introduction .................................................................................................................................................................. 5
2.2
RF Radiation Exposure Limits ...................................................................................................................................... 5
2.3
MPE Assessment Method ............................................................................................................................................ 6
2.4
MPE Calculation for Standalone Operations ................................................................................................................ 6
2.5
MPE Calculation for Simultaneous Transmission Operations ...................................................................................... 7
3. Information on the Testing Laboratories ............................................................................................................................. 8
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Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
FCC MPE Evaluation Report
Release Control Record
Report No.
SA150127C26
SA150127C26 R1
Reason for Change
Date Issued
Initial release
Mar. 04, 2015
Revise antenna gain and add Section 2.5
Mar. 09, 2015
Report Format Version 5.0.0
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Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
FCC MPE Evaluation Report
1. Description of Equipment Under Test
EUT Type
Model Name
Tx Frequency Bands
(Unit: MHz)
Uplink Modulations
Antenna Type
EUT Stage
Wireless Camera
A00005
WLAN : 2412 ~ 2462, 5180 ~ 5240, 5260 ~ 5320, 5500 ~ 5700, 5745 ~ 5825
Bluetooth : 2402 ~ 2480
15.4: 2405 ~ 2475
802.11b : DSSS
802.11a/g/n : OFDM
Bluetooth : GFSK
15.4: DSSS
Integral Antenna
Identical Prototype
Note:
1. The above EUT information is declared by manufacturer and for more detailed features description please refers
to the manufacturer’s specifications or User’s Manual.
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FCC MPE Evaluation Report
2. MPE (Maximum Permissible Exposure) Assessment
2.1 Introduction
According to 47 CFR §2.1091, a mobile device is defined as a transmitting device designed to be used in other than
fixed locations and to generally be used in such a way that a separation distance of at least 20 cm is normally
maintained between the transmitting antenna and the body of the user or nearby persons. In this context, the term
“fixed location” means that the device is physically secured at one location and is not able to be easily moved to
another location. Transmitting devices designed to be used by consumers or workers that can be easily re-located,
such as wireless devices associated with a personal computer, are considered to be mobile devices if they meet the
20 cm separation requirement. The limits to be used for MPE evaluation are specified in §1.1310. All unlicensed
personal communications service (PCS) devices and unlicensed NII devices shall be subject to the limits for general
population/uncontrolled exposure.
2.2 RF Radiation Exposure Limits
According to 47 CFR §1.1310, the criteria listed in below table shall be used to evaluate the environmental impact of
human exposure to RF radiation as specified in §1.1307(b), except in the case of portable devices which shall be
evaluated according to the provisions of §2.1093.
Frequency
Range (MHz)
Electric Field
Strength (V/m)
Magnetic Field
Strength (A/m)
Power Density
(mW/cm2)
Averaging Time
(min)
(A) Limits for Occupational / Controlled Exposures
0.3 – 3.0
614
1.63
100
3.0 – 30
1842/f
4.89/f
900/f2
30 – 300
61.4
0.163
1.0
300 – 1500
f/300
1500 – 100000
(B) Limits for General Population / Uncontrolled Exposures
0.3 – 1.34
614
1.63
100
30
1.34 – 30
824/f
2.19/f
180/f
30
30 – 300
27.5
0.073
0.2
30
300 – 1500
f/1500
30
1500 – 100000
1.0
30
Limits for maximum permissible exposure (MPE)
Notes:
1. f = frequency in MHz
2. Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their
employment provided those persons are fully aware of the potential for exposure and can exercise control over
their exposure. Limits for occupational/controlled exposure also apply in situations when an individual is transient
through a location where occupational/controlled limits apply provided they are made aware of the potential for
exposure.
3. General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in
which persons that are exposed as a consequence of their employment may not be fully aware of the potential
for exposure or cannot exercise control over their exposure.
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Report No. : SA150127C26 R1
Issued Date
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FCC MPE Evaluation Report
2.3 MPE Assessment Method
Calculations can be made to predict RF field strength and power density levels around typical RF sources. For
example, in the case of a single radiating antenna, a prediction for power density in the far-field of the antenna can
be made by use of the general Equations below. This equation is generally accurate in the far-field of an antenna but
will over-predict power density in the near field, where they could be used for making a “worst case” or conservative
prediction.
Where
S = Power Density, unit in mW/cm2
P = Power input to the antenna, unit in mW
G = Power gain of the antenna in the direction of interest relative to an isotropic radiator
R = Distance to the center of radiation of the antenna, unit in cm
EIRP = Effective isotropically radiated power
2.4 MPE Calculation for Standalone Operations
The manufacturer expects that the radiated component of this device will not close to the human body during normal
usage and the warning statement was also stated in the user instruction. Since the transmitting antenna will be kept
at least 20 cm away from the human body, the MPE level is calculated based on this condition and the result is listed
in below table.
Band
Max.
Time-averaged
Power
(dBm)
Peak
Antenna
Gain
(dBi)
Max.
Time-averaged
EIRP
(mW)
Max.
Time-averaged
ERP
(W)
Calculated
Power
Density
(mW/cm2)
MPE
Limit
(mW/cm2)
Result
WLAN 2.4G
13.5
22.39
0.01
0.00
1.00
PASS
WLAN 5.2G
16.0
-1.5
28.18
0.02
0.01
1.00
PASS
WLAN 5.3G
15.5
-1.5
25.12
0.02
0.00
1.00
PASS
WLAN 5.6G
18.0
-1.5
44.67
0.03
0.01
1.00
PASS
WLAN 5.8G
17.5
-1.5
39.81
0.02
0.01
1.00
PASS
Bluetooth
-2.0
0.63
0.00
0.00
1.00
PASS
15.4
19.0
-2.5
44.67
0.03
0.01
1.00
PASS
Summary:
Since the ERP (effective radiated power) operated at < 1.5 GHz is less than 1.5 watts and > 1.5 GHz is less than 3
watts, the routine environmental evaluation is not required, and the MPE result calculated for this device complies
with the MPE limit as specified in 47 CFR §1.1310.
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Issued Date
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Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
FCC MPE Evaluation Report
2.5 MPE Calculation for Simultaneous Transmission Operations
Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous
transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or
measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum
test separation distance required by the operating configurations and exposure conditions of the host device,
according to the ratio of field strengths or power density to MPE limit, at the test frequency.
Where
MPEi = the power density
MPELimit = the power density limit
Calculated Result:
Band
Power Density
Power Density Limit
P/L Ratio
WLAN 2.4G
0.00
0.00
WLAN 5.2G
0.01
0.01
WLAN 5.3G
0.00
0.00
WLAN 5.6G
0.01
0.01
WLAN 5.8G
0.01
0.01
15.4
0.01
0.01
Bluetooth
0.00
0.00
Max. Ratio
0.01
0.01
Sum of the Ratio
0.02
Summary:
Since the summation of the ratio on worst condition comply the above formula; the simultaneous transmission
operations also complies with the FCC restriction as specified in 47 CFR §1.1310.
Report Format Version 5.0.0
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Report No. : SA150127C26 R1
Issued Date
: Mar. 09, 2015
Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
FCC MPE Evaluation Report
3. Information on the Testing Laboratories
We, Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, were founded in 1988 to provide our
best service in EMC, Radio, Telecom and Safety consultation. Our laboratories are accredited and approved
according to ISO/IEC 17025.
If you have any comments, please feel free to contact us at the following:
Taiwan HwaYa EMC/RF/Safety/Telecom Lab:
Add: No.19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City 33383, TAIWAN (R.O.C.)
Tel: 886-3-318-3232
Fax: 886-3-327-0892
Taiwan LinKo EMC/RF Lab:
Add: No. 47-2, 14th Ling, Chia Pau Vil., Linkou Dist., New Taipei City 244, Taiwan, R.O.C.
Tel: 886-2-2605-2180
Fax: 886-2-2605-1924
Taiwan HsinChu EMC/RF Lab:
Add: No. 81-1, Lu Liao Keng, 9th Ling, Wu Lung Vil., Chiung Lin Township, Hsinchu County 307, Taiwan, R.O.C.
Tel: 886-3-593-5343
Fax: 886-3-593-5342
Email: service.adt@tw.bureauveritas.com
Web Site: www.adt.com.tw
The road map of all our labs can be found in our web site also.
---END---
Report Format Version 5.0.0
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Report No. : SA150127C26 R1
Issued Date
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Cancels and replaces the report No.: SA150127C26 dated Mar. 04, 2015.
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