TXSERIES Smart Projector RF Exposure Info Guizhou CVIM Technology Co., Ltd.

Guizhou CVIM Technology Co., Ltd. Smart Projector

FCC ID Filing: 2AKWS-TXSERIES
Purchase on Amazon: Smart Projector

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RF Exposure Evaluation For FCC ID: 2AKWS-TXSERIES
Refer user manual this device is a Smart Projector, and this device was designed used in Mobile
devices that the minimum distance between human’s body is 20cm. Based on the 47CFR 2.1091, this
device belongs to Mobile device. The definition of the category as following:
Mobile Derives:
CFR Title 47 §2.1091(b)
(b) For purposes of this section, 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 centimeters is normally maintained between the transmitter’s radiating structure(s) and
the body of the user or nearby persons.
FCC KDB 447498 D01 General RF Exposure Guidance v06 Limit
Devices operating in standalone mobile exposure conditions may contain a single transmitter or
multiple transmitters that do not transmit simultaneously. A minimum test separation distance ≥ 20 cm
is required between the antenna and radiating structures of the device and nearby persons to apply
mobile device exposure limits. The distance must be fully supported by the operating and installation
configurations of the transmitter and its antenna(s), according to the source-based time-averaged
maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations
are applied to determine compliance, the most conservative operating configurations and exposure
conditions must be evaluated. The minimum test separation distance required for a device to comply
with mobile exposure conditions must be clearly identified in the installation and operating instructions,
for all installation and exposure conditions, to enable users and installers to comply with RF exposure
requirements. For mobile devices that have the potential to operate in portable device exposure
conditions, similar to the configurations described in § 2.1091(d)(4), a KDB inquiry is required to
determine the SAR test requirements for demonstrating compliance.
When the categorical exclusion provision of § 2.1091(c) applies, the minimum test separation distance
may be estimated, when applicable, by simple calculations according to plane-wave equivalent
conditions, to ensure the transmitter and its antenna(s) can operate in manners that meet or exceed
the estimated distance. The source-based time-averaged maximum radiated power, according to the
maximum antenna gain, must be applied to calculate the field strength and power density required to
establish the minimum test separation distance. When the estimated test separation distance
becomes overly conservative and does not support compliance, MPE measurement or computational
modeling may be used to determine the required minimum separation distance.
According to FCC Part 1.1307, systems operating under the provisions of this section shall be
operated in a manner the ensures that the public is not exposed to radio frequency energy level in
excess of the commission’s guidelines.
Limits for General Population/ Uncontrolled Exposure
Frequency Range
(MHz)
Electric Field
Strength(E)(V/m)
Magnetic Field
Strength (H)(A/m)
Power Density
(S)(mW/cm2)
0.3-1.34
614
1.63
(100)*
1.34-30
824/f
2.19/f
(180/f2)*
30-300
27.5
0.073
0.2
300-1500
f/1500
1500-100,000
1.0
MPE calculation formula
Where:
S = power density
P = output power (mW)
G = power gain of the antenna in the direction of interest relative to an isotropic radiator
R = Separation distance between radiator and human body (cm)
Test data
BLUETOOTH 3.0
Mode
GFSK
∏/4-DQPSK
Peak Power (dBm)
5.55
4.80
BLE
Mode
Low Channel
Middle Channel
Peak Power (dBm)
-0.68
0.64
Antenna 0
2.4G WIFI
Mode
Antenna Gain
802.11b
802.11g
Peak Power (dBm)
0
21.61
21.99
5150 MHz ~ 5725 MHz
Mode
Antenna Gain
802.11a
Peak Power (dBm)
0
16.76
5725 MHz ~ 5850 MHz
Mode
Antenna Gain
802.11a
Peak Power (dBm)
0
13.05
Note: This report listed the worst case peak power value, please refer to RF test report for more
details.
Antenna 1
2.4G WIFI
Mode
Antenna Gain
802.11b
802.11g
Peak Power (dBm)
0
21.33
20.11
5150 MHz ~ 5725 MHz
Mode
Antenna Gain
802.11a
Peak Power (dBm)
0
15.46
5725 MHz ~ 5850 MHz
Mode
Antenna Gain
802.11a
Peak Power (dBm)
0
12.45
Note: This report listed the worst case peak power value, please refer to RF test report for more
details.
Antenna 0+ Antenna 1
2.4G WIFI
Mode
Antenna
Gain
802.11n20
802.11n40
Peak Power (dBm)
0
24.97
24.75
5G WIFI
Mode
Antenna
Gain
5150 MHz ~ 5725 MHz
5725 MHz ~ 5850 MHz
802.11n20
802.11n40
802.11n20
802.11n40
Conducted Power (dBm)
0
18.46
18.16
12.34
11.10
Note: This report listed the worst case peak power value, please refer to RF test report for more
details.
Test Configuration
Mode
Antenna
Antenna 0
Antenna 1
Antenna 0 + Antenna1
802.11a
-
802.11b
-
802.11g
-
802.11n20
802.11n40
Note 1: The 802.11a, 802.11b and 802.11g only support single antenna launch.
Note 2: The 802.11n20 and 802.11n40 support double antennas launch.
Turn-up power
Mode
Range (dBm)
Bluetooth 3.0
3.10-6.00
Bluetooth 4.0
(-1.00)-1.10
2.4G WIFI(802.11g Antenna 0)
21.30-22.50
2.4G WIFI(MIMO)
24.20-25.50
5150 MHz ~ 5725 MHz(802.11a Antenna 0)
15.00-17.30
5725 MHz ~ 5850 MHz (802.11a Antenna 0)
12.00-13.50
5150 MHz ~ 5725 MHz(802.11n20 MIMO)
18.00-19.00
5725 MHz ~ 5850 MHz (802.11n20 MIMO)
11.00-12.80
Test result
Evolution mode
Maximum
peak
output
power
dBm
Antenna
Gain
(typical)
(dBi):
Total
Power
(mw)
Distance
(cm)
Limit of
Power
Density
(mW/cm²)
Power
Density
(mW/cm²)
Verdict
Bluetooth 3.0
6.00
0
3.98
20
1
7.918*10-4
Pass
2.4GWIFI(802.11g
Antenna 0)
22.50
0
177.83
20
1
0.035
Pass
2.4G WIFI
(MIMO)
25.50
0
354.81
20
1
0.071
Pass
5150 MHz ~ 5725
MHz(802.11a
Antenna 0)
17.30
0
53.70
20
1
0.011
Pass
5725 MHz ~ 5850
MHz (802.11a
Antenna 0)
13.50
0
22.39
20
1
0.004
Pass
5150 MHz ~ 5725
MHz(802.11n20
MIMO)
19.00
0
79.43
20
1
0.016
Pass
5725 MHz ~ 5850
MHz (802.11n20
MIMO)
12.80
0
19.05
20
1
0.004
Pass
Collocated Power Density Calculation
Evolution mode
Frequency(MHz)
Power
Density/Limit
Σ(Power Density / Limit)
of
Bluetooth 3.0+WIFI 2.4GHz
Verdict
Bluetooth 3.0
2400MHz ~
2483.5MHz
7.918*10-4
0.036
Pass
2.4GWIFI(802.11g
Antenna 0)
2412MHz ~
2462MHz
0.035
Pass
Note 1:
1. Σ(Power Density / Limit): This is a summation of [(power density for each transmitter/ antenna
included in the simultaneous transmission)/ (corresponding MPE limit)], for WLAN 2.4GHz+WLAN
5GHz.
2. Both of the 2.4GHz/5GHz can transmit simultaneously, the formula of calculated the MPE is
CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1
CPD = Calculation power density
LPD = Limit of power density
3. Both of the 5GHz WIFI and 2.4GHz WIFI can’t transmit simultaneously at same time.
The 5GHz WIFI (MIMO) or 2.4GHz WIFI (MIMO) and Bluetooth can’t transmit simultaneously at
same time.
The 5GHz WIFI or 2.4GHz WIFI and Bluetooth can transmit simultaneously at same time.
4. The worst-case situation is 0.036, which is less than “1”. This confirmed that the device comply
with FCC 1.1310 MPE limit.
5. The Smart Projector work frequency range used are 2400 MHz ~ 2483.5 MHz, 5150 MHz ~ 5725
MHz and 5725 MHz ~ 5850 MHz the result close to the limit by the above formula.
6. More power list please refer to RF test report.
Conclusion:
According to 47 CFR §2.1091, the RF exposure analysis concludes that the RF Exposure is FCC
compliant.
Evolution mode
Frequency(MHz)
Power
Density/Limit
Σ(Power Density / Limit)
of
Bluetooth 3.0+WIFI 5.2GHz
Verdict
Bluetooth 3.0
2400MHz ~
2483.5MHz
7.918*10-4
0.012
Pass
5150 MHz ~ 5725
MHz(802.11a
Antenna 0)
5150 MHz ~
5725 MHz
0.011
Pass
Evolution mode
Frequency(MHz)
Power
Density/Limit
Σ(Power Density / Limit)
of
Bluetooth 3.0+WIFI 5.8GHz
Verdict
Bluetooth 3.0
2400MHz ~
2483.5MHz
7.918*10-4
0.005
Pass
5725 MHz ~ 5850
MHz(802.11a
Antenna 0)
5725 MHz ~
5850 MHz
0.004
Pass
Download: TXSERIES Smart Projector RF Exposure Info  Guizhou CVIM Technology Co., Ltd.
Mirror Download [FCC.gov]TXSERIES Smart Projector RF Exposure Info  Guizhou CVIM Technology Co., Ltd.
Document ID3548511
Application IDrNcdod8vQLUV5P08MnbVkg==
Document DescriptionRF Exposure Info
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize29.74kB (371796 bits)
Date Submitted2017-09-07 00:00:00
Date Available2017-09-08 00:00:00
Creation Date2017-08-10 11:14:59
Producing SoftwareMicrosoft® Word 2013
Document Lastmod2017-08-10 11:29:55
Document TitleRF Exposure Info
Document CreatorMicrosoft® Word 2013
Document Author: 李红梅

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Format                          : application/pdf
Creator                         : 李红梅
Title                           : RF Exposure Evaluation For FCC ID: 2AA9G-1150B; IC : 11705A-1150B
Create Date                     : 2017:08:10 11:14:59+08:00
Creator Tool                    : Microsoft® Word 2013
Modify Date                     : 2017:08:10 11:29:55+08:00
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Author                          : 李红梅
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