MPE

FCC ID: TVUA495

RF Exposure Info

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FCCID_1226515

FCC ID: TVUA495

RF Exposure Evaluation
of
E.U.T. : DECT phone(Base Station FP)
FCC ID. : TVUA495
MODEL : Gigaset A495, Gigaset A490

for

APPLICANT : Gigaset Communications GmbH

ADDRESS : Frankenstr. 2 GC QM PR CRA

Prepared by

ELECTRONICS TESTING CENTER, TAIWAN
NO. 34. LIN 5. DINGFU TSUEN, LINKOU SHIANG
TAIPEI COUNTY, TAIWAN, 24442, R.O.C.
Tel:(02)26023052 Fax:(02)26010910
http:// www.etc.org.tw; e-mail: emc@etc.org.tw
Report Number : 09-11-RBF-043

FCC ID: TVUA495

Product Information:
Type of EUT: DECT phone(Base Station FP))
FCC ID: TVUA495
Manufacturer: Huiyang CCT Telecommunications Products Co. Ltd.
Model: Gigaset A495, Gigaset A490
Description: DECT phone
Maximum conducted output power (measured): 19.64dBm or92.05mW

The following table lists the provided authorized antennas:
Model Antenna Type Antenna Gain
(dBi) Numeric
157-22812-103013 Quarter wave L shape antenna. 0 1

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: TVUA495

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: TVUA495

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 = 92.05mW
G=1
S = Exposure limit = 1.0 mW/cm2

R = ((92.05 * 1) / (4*π*1.0))1/2
= 0.19cm

For complying the FCC limits for general population/uncontrolled exposure, the
minimum MPE distance is 0.19cm.
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 47 CFR
Part 15.247 (b)(5).

Document Created: 2009-12-28 15:16:32
Document Modified: 2009-12-28 15:16:32

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