RF Exposure Report

FCC ID: NGJ-5372

RF Exposure Info

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FCCID_3748378

FCC ID: NGJ-5372

RF Exposure Evaluation
of
E.U.T. : 5372 miniPCie card

FCC ID. : NGJ-5372

MODEL : 5372

for

APPLICANT : LIGHTSPEED International Co.

ADDRESS : No.20 Lane 526 Niupu East Rd. Hsinchu Taiwan
30091

Prepared by

ELECTRONICS TESTING CENTER, TAIWAN
NO. 34. LIN 5. DINGFU, LINKOU DIST.,
NEW TAIPEI CITY, TAIWAN, 24442, R.O.C.
Tel:(02)26023052 Fax:(02)26010910
http://www.etc.org.tw ; e-mail: emc@etc.org.tw
Report Number : 17-06-RBF-035-MPE

FCC ID: NGJ-5372

TEST REPORT CERTIFICATION
Applicant : LIGHTSPEED International Co.
No.20 Lane 526 Niupu East Rd. Hsinchu Taiwan 30091

Manufacturer : LIGHTSPEED International Co.
No.20 Lane 526 Niupu East Rd. Hsinchu Taiwan 30091

Description of EUT

a) Type of EUT : 5372 miniPCie card

b) Trade Name : LIGHTSPEED

c) Model No. : 5372

d) Power Supply : 3.3Vdc

Regulation Applied : FCC KDB447498 D01. The equipment fulfills the
requirements on power density for general population/uncontrolled exposure and
therefore fulfills the requirements of section 1.1310 of FCC 47 CFR Part 1.
Note: 1. The result of the testing report relate only to the item tested.
2. The testing report shall not be reproduced expect in full, without the written
approval of ETC

FCC ID: NGJ-5372

Product Information:
Type of EUT: 5372 miniPCie card
FCC ID: NGJ-5372
Model: 5372
Description: WiFi module (IEEE 802.11b/g/n)
Maximum conducted output power (rated): 16.5 dBm or 44.668mW

Transmitter Maximum output power rated:
Transmitter Mode Output Power Output Power
(dBm) (mW)
802.11b 16.5 44.668
802.11g 13.5 22.387
802.11n-HT20 16.5 44.668
802.11n-HT40 15.5 35.481

The following table lists the provided authorized antennas:
Model Antenna Type Antenna Gain
(dBi) Numeric
AN2400-6001RS Omni-Directional 7 5.01
AN2400-5002BRS Omni-Directional 5 3.16
AN2400-3901BRS Omni-Directional 2 1.58

Below is an example of the RF Exposure Statement:

IMPORTANT NOTE: To comply with the FCC RF exposure compliance requirements,
the antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all persons and must not be co-located or operating in
conjunction with any other antenna or transmitter. No change to the antenna or the
device is permitted. Any change to the antenna or the device could result in the
device exceeding the RF exposure requirements and void user’s authority to operate
the device.

FCC ID: NGJ-5372

Relative Requirement for Compliance
According to section 1.1310 of FCC 47 CFR Part 1, limits for maximum permissible
exposure (MPE) are as following:

TABLE 1 – LIMITS FOR MAXIMUN PERMISSIBLE EXPOSURE (MPE)
Frequency Range Electric Field Magnetic Field Power Density Averaging Time
(MHz) Strength Strength
(V/m) (A/m) (mW/cm2) (minutes)
(A) Limits for Occupational/Controlled Exposures
0.3-3.0 ……………… 614 1.63 *(100) 6
3-30 ………………… 1842/f 4.89/f *(900/f2) 6
30-300 ……………… 61.4 0.163 1.0 6
300-1500 …………... …………………. …………………. f/300 6
1500-100,000 ……… …………………. …………………. 5 6
(B) Limits for General Population/Uncontrolled Exposure
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
1500-100,000 ……… …………………. …………………. 1.0 30
f = frequency in MHz
* = Plane-wave equivalent power density
NOTE 1 TO TABLE 1: 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 he or she is
made aware of the potential for exposure.
NOTE 2 TO TABLE 1: 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 can not exercise control over their exposure.

FCC ID: NGJ-5372

RF Exposure Calculations:
The following information provides the minimum separation distance for the highest
gain antenna provided. This calculation is based on the highest EIRP possible from
the system, considering maximum power and antenna gain, and considering a 1.0
mW/cm2 uncontrolled exposure limit. The formula shown in OET Bulletin 65 is used in
the calculation.
Equation from page 19 of OET Bulletin 65, Edition 97-01 is:

S= PG / 4πR2
where: S = power density (in appropriate units, e.g. mW/cm2)
P = power input to the antenna (in appropriate units, e.g., 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 (appropriate
units, e.g., cm)
hence

R= (PG / 4πS)1/2
For our device
P = 44.668mW
G = 5.01
R = 20 cm
S = (44.668 * 5.01) / (4*π*202) = 0.0445 mW/cm2 < 1.0 mW/cm2

For complying the FCC limits for general population/uncontrolled exposure, the
power density limit is 1.0 mW/cm2. The calculation result of the power density at a
distance of 20 cm of our device is less than the limit.
This means that according to OET Bulletin 65 (Edition 97-01), Supplement C (Edition
01-01), the equipment fulfills the requirements on power density for general
population/uncontrolled exposure and therefore fulfills the requirements of section
1.1310 of FCC 47 CFR Part 1.

Document Created: 2018-02-01 17:20:38
Document Modified: 2018-02-01 17:20:38

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