Test report

FCC ID: K4E917T4G

Test Report

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FCCID_3983435

FCC Part 15
EMI TEST REPORT
of
E.U.T. : Transmitter
FCC ID : K4E917T4G
MODEL : SK-917T4-GNUQ/SK-917T4-GNQ
/SK-917T3-GNUQ/SK-917T3-GNQ
/SK-917T2-GNUQ/ SK-917T2-GNQ
/SK-917T1-GBUQ/ SK-917T1-GBQ
Working Frequency: 315 MHz

for

APPLICANT : Superior Electronics Corporation
ADDRESS : No.10, Lane 31, Chongde St., Sinyi District,
Taipei City 110, Taiwan (R.O.C.)

Test Performed by

ELECTRONICS TESTING CENTER, TAIWAN
NO. 34. LIN 5, DINGFU VIL., 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 : 18-07-RBF-003

Rev. No 1.0

ETC Report No.18-07-RBF-003 FCC ID: K4E917T4G

TEST REPORT CERTIFICATION

Applicant : Superior Electronics Corporation
No.10, Lane 31, Chongde St., Sinyi District, Taipei City 110,
Taiwan (R.O.C.)
Manufacturer : Superior Electronics Corporation
No.10, Lane 31, Chongde St., Sinyi District, Taipei City 110,
Taiwan (R.O.C.)
Description of EUT :

a) Type of EUT : Transmitter
b) Trade Name : ENFORCER
c) Model No. : SK-917T4-GNUQ/SK-917T4-GNQ
/SK-917T3-GNUQ/SK-917T3-GNQ
/SK-917T2-GNUQ/ SK-917T2-GNQ
/SK-917T1-GBUQ/ SK-917T1-GBQ
d) FCC ID : K4E917T4G
e) Working Frequency : 315 MHz
f) Power Supply : DC 3V

Regulation Applied : FCC Rules and Regulations Part 15 Subpart C

I HEREBY CERTIFY THAT; The data shown in this report were made in accordance with the
procedures given in ANSI C63.10-2013 and the energy emitted by the device was founded to be
within the limits applicable. I assume full responsibility for accuracy and completeness of these
data.

Note : 1. The results of the testing report relate only to the items tested.
2. The testing report shall not be reproduced except in full, without the written
approval of ETC.

Summary of Tests

Test Results
Radiated Emission Pass
Bandwidth of Emision Pass
Conducted Emission N/A

Rev. No 1.0

ETC Report No.18-07-RBF-003 FCC ID: K4E917T4G

Table of Contents Page
1. GENERAL INFORMATION ............................................................................................................................... 1
1.1 PRODUCT DESCRIPTION ........................................................................................................................................... 1
1.2 CHARACTERISTICS OF DEVICE ................................................................................................................................. 1
1.3 TEST METHODOLOGY .............................................................................................................................................. 2
1.4 TEST FACILITY ........................................................................................................................................................ 2
2. DEFINITION AND LIMITS ................................................................................................................................ 3
2.1 DEFINITION ............................................................................................................................................................. 3
2.2 RESTRICTED BANDS OF OPERATION ........................................................................................................................ 3
2.3 LIMITATION ............................................................................................................................................................. 3
2.4 LABELING REQUIREMENT ........................................................................................................................................ 5
2.5 USER INFORMATION ................................................................................................................................................ 5
3 SYSTEM TEST CONFIGURATION ................................................................................................................... 6
3.1 JUSTIFICATION......................................................................................................................................................... 6
3.2 DEVICES FOR TESTED SYSTEM ................................................................................................................................ 6
4. RADIATED EMISSION MEASUREMENT ....................................................................................................... 7
4.1 APPLICABLE STANDARD .......................................................................................................................................... 7
4.2 MEASUREMENT PROCEDURE ................................................................................................................................... 7
4.3 TEST DATA ............................................................................................................................................................ 10
4.4 FIELD STRENGTH CALCULATION ........................................................................................................................... 14
4.5 ACTIVATE TIME..................................................................................................................................................... 14
4.6 CALCULATION OF DUTY FACTOR .......................................................................................................................... 14
4.7 RADIATED TEST EQUIPMENT ................................................................................................................................. 19
4.8 MEASURING INSTRUMENT SETUP .......................................................................................................................... 19
4.9 RADIATED MEASUREMENT PHOTOS ...................................................................................................................... 20
5. BANDWIDTH OF EMISSION. .......................................................................................................................... 22
5.1 APPLICABLE STANDARD PLOT GRAPHIC OF BANDWIDTH ...................................................................................... 22
5.2 BANDWIDTH TEST EQUIPMENT.............................................................................................................................. 22
5.3 PLOT GRAPHIC OF BANDWIDTH ............................................................................................................................. 22
6. CONDUCTED EMISSION MEASUREMENT ................................................................................................ 23
6.1 DESCRIPTION ......................................................................................................................................................... 23
7 ANTENNA REQUIREMENT ............................................................................................................................. 24
7.1 STANDARD APPLICABLE ........................................................................................................................................ 24
7.2 ANTENNA CONSTRUCTION .................................................................................................................................... 24

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 2 of 24 Sheets
FCC ID: K4E917T4G

2. DEFINITION AND LIMITS
2.1 Definition
Intentional radiator:
A device that intentionally generates and emits radio frequency energy by radiation or
induction.

2.2 Restricted Bands of Operation
Only spurious emissions are permitted in any of the frequency bands listed below:
MHz MHz MHz GHz
0.090 - 0.110 16.42-16.423 399.9-410 4.5-5.15
0.495 - 0.505 ** 16.69475 - 16.69525 608-614 5.35-5.46
2.1735 - 2.1905 16.80425 - 16.80475 960-1240 7.25-7.75
4.125-4.128 25.5-25.67 1300-1427 8.025-8.5
4.17725-4.17775 37.5-38.25 1435-1626.5 9.0-9.2
4.20725-4.20775 73-74.6 1645.5-1646.5 9.3-9.5
6.215-6.218 74.8-75.2 1660-1710 10.6-12.7
6.26775-6.26825 108-121.94 1718.8-1722.2 13.25-13.4
6.31175-6.31225 123-138 2200-2300 14.47-14.5
8.291-8.294 149.9-150.05 2310-2390 15.35-16.2
8.362-8.366 156.52475 - 156.52525 2483.5-2500 17.7-21.4
8.37625-8.38675 156.7-156.9 2655-2900 22.01-23.12
8.41425-8.41475 162.0125-167.17 3260-3267 23.6-24.0
12.29-12.293 167.72-173.2 3332-3339 31.2-31.8
12.51975-12.52025 240-285 3345.8-3358 36.43-36.5
12.57675-12.57725 322-335.4 3360-4400 Above 38.6
13.36-13.41
Remark “**” : Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz

2.3 Limitation
(1) Conducted Emission Limits:
Except as shown in paragraphs (b) and (c) of this section, for an intentional radiator
that is designed to be connected to the public utility (AC) power line, the radio
frequency voltage that is conducted back onto the AC power line on any frequency
or frequencies within the band 150kHz to 30 MHz shall not exceed the limits in the
following table, as measured using a 50μH/50 ohms line impedance stabilization
network (LISN). Compliance with the provisions of this paragraph shall be based on
the measurement of the radio frequency voltage between each power line and ground
at the power terminal. The lower limit applies at the boundary between the frequency
ranges.
Frequency Quasi Peak Average
MHz dBμV dBμV
0.15 - 0.5 66-56* 56-46*
0.5 - 5.0 56 46
5.0 - 30.0 60 50
 Decreases with the logarithm of the frequency

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 3 of 24 Sheets
FCC ID: K4E917T4G

(2) Radiated Emission Limits :

According to 15.231(a), Periodic operation in the band 40.66-40.70 MHz and above
70 MHz, except as shown in paragraph 15.231(e), the field strength of emissions
from intentional radiators operated under this section shall not exceed the following:

Frequency Band Field strength of Field strength of
(MHz) Fundamental (uV/m) Spurious (uV/m)
40.66-40.70 2250 225
70-130 1250 125
130-174 *1,250 to 3,750 *125 to 375
174-260 3750 375
260-470 *3,750 to 12,500 *375 to 1250
Above 470 12500 1250
* Linear interpolations.

According to 15.231(e), Intentional radiators may operate at a periodic rate
exceeding that specified in paragraph (a) and may be employed for any type of
operation, including operation prohibited in paragraph (a), provided the intentional
radiator complies with the provisions of paragraphs (b) through (d) of this Section,
except the field strength table in paragraph (b) is replaced by the following:
Frequency Band Field strength of Field strength of
(MHz) Fundamental (uV/m) Spurious (uV/m)
40.66-40.70 1,000 100
70-130 500 50
130-174 *500 to 1,500 *50 to 150
174-260 1,500 150
260-470 *1,500 to 5,000 *150 to 500
Above 470 5,000 500
* Linear interpolations

Field strength limits are at the distance of 3 meters, emissions radiated outside of the
specified bands, shall be according to the general radiated limits in 15.209,as
following table:

Other Frequencies Field Strength of Fundamental
(MHz) V/meter dBV/meter
30 - 88 100 40.0
88 - 216 150 43.5
216 - 960 200 46.0
Above 960 500 54.0

As shown in 15.35(b), for frequencies above 1000MHz, the field strength limits are
based on average detector, however, the peak field strength of any emission shall not
exceed the maximum permitted average limits, specified above by more than 20 dB
under any condition of modulation.

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 4 of 24 Sheets
FCC ID: K4E917T4G

(3) Limit of transmission time
According to 15.231(a),
1) A manually operated transmitter shall employ a switch that will automatically
deactivate the transmitter within not more than 5 seconds of being released.
2) A transmitter activated automatically shall cease transmission within 5 seconds
after activation.
3) Periodic transmissions at regular predetermined intervals are not permitted.
However, polling or supervision transmissions, including data, to determine
system integrity of transmitters used in security or safety applications are
allowed if the total duration of transmissions does not exceed more than two
seconds per hour for each transmitter. There is no limit on the number of
individual transmissions, provided the total transmission time does not exceed
two seconds per hour.
4) Intentional radiators which are employed for radio control purposes during
emergencies involving fire, security, and safety of life, when activated to signal
an alarm, may operate during the pendency of the alarm condition.
5) Transmission of set-up information for security systems may exceed the
transmission duration limits in paragraphs (a)(1) and (a)(2) of this section,
provided such transmissions are under the control of a professional installer and
do not exceed ten seconds after a manually operated switch is released or a
transmitter is activated automatically. Such set-up information may include data.
According to 15.231(e), devices operated under the provisions of this paragraph shall
be provided with a means for automatically limiting operation so that the duration of
each transmission shall not be greater than one second and the silent period between
transmissions shall be at least 30 times the duration of the transmission but in no case
less than 10 seconds.

2.4 Labeling Requirement
The device shall bear the following statement in a conspicuous location on the device :

This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.

2.5 User Information
The users manual or instruction manual for an intentional or unintentional radiator shall
caution the user that changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 5 of 24 Sheets
FCC ID: K4E917T4G

3 SYSTEM TEST CONFIGURATION
3.1 Justification

All measurement were intentional to maximum the emissions from EUT by varying the
connection cables(if applicable), therefore, the test result is sure to meet the applicable
requirement.

For portable device, the EUT was pretested in three orthogonal plans: put on table
horizontally, stands vertically and side up vertically. The worst case was chosen for final
test.

3.2 Devices for Tested System

Device Manufacture Model / FCC ID. Description
Transmitter* Superior Electronics SK-917T4-GNUQ / K4E917T4G --
Corporation

Remark “*” means equipment under test.

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 8 of 24 Sheets
FCC ID: K4E917T4G

Figure 2 : Frequencies measured above 1 GHz configuration

Antenna Tower

EUT
3m Horn Antenna

4m Spectrum
Analyzer

1.5m
Table
Amplifier

Rev. No 1.0

Sheet 13 of 24 Sheets
eETC Report No.:18-07-RBF-003 FCC ID: K4E917T4G

C. Emission frequencies below 30MHz (9kHz - 30MHz)

According to exploratory test no any obvious emission were detected from 9kHz to
30MHz. All emissions were greater than 20 dB below the limit. Although these tests
were performed other than open area test site, adequate comparison measurements
were confirmed against 30 m open are test site. Therefore sufficient tests were made
to demonstrate that the alternative site produces results that correlate with the ones of
tests made in an open field based on KDB 414788.

4.4 Field Strength Calculation
The field strength is calculated by adding the Antenna Factor and Cable Factor, and
subtracting the Amplifier Gain (if any) from the measured reading. For the limit is
employed average value, therefore the peak value can be transferred to average value by
subtracting the duty factor. The basic equation with a sample calculation is as follows:
Peak = Reading + Corrected Factor
where
Corr. Factor = Antenna Factor + Cable Factor - Amplifier Gain (if any)
And the average value is
Average = Peak Value + Duty Factor
Note : If the measured frequencies are fall in the restricted frequency band, the limit
employed must be quasi peak value when frequencies are below or equal to 1
GHz. And the measuring instrument is set to quasi peak detector function.

4.5 Activate Time
This EUT is operated by manually, and Activate Time is less than 5 second after being
released.

4.6 Calculation of Duty Factor
The duty factor is calculated with following formula :

Total Duty
20 log
Period of Pulse Train

(1.2ms*20)+(0.9ms*3)+(5.1ms*1)+(1.5ms*3)
Duty Factor＝ 20log +(3.9ms*5)+(2.7ms*7)+(3.6ms*2)+(2.1ms*3) = -1.1 dB
100 ms

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 14 of 24 Sheets
FCC ID: K4E917T4G

Period of Pulse Train
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.65 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 117.000000 ms

80 Marker 1 [T1 ]
30.04 dBµV
30.000000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1 1
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

Date: 17.JUL.2018 10:47:27

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 15 of 24 Sheets
FCC ID: K4E917T4G

Detail of a single pulse train
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.35 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 1.200000 ms

80 Marker 1 [T1 ]
30.04 dBµV
30.000000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

11
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz -0.26 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 900.000000 µs

Date: 8017.JUL.2018 10:48:25 Marker 1 [T1 ]
30.39 dBµV
31.200000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

11
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

Date: 17.JUL.2018 10:48:55

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 16 of 24 Sheets
FCC ID: K4E917T4G

Detail of a single pulse train
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.97 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 5.100000 ms

80 Marker 1 [T1 ]
30.47 dBµV
33.000000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1 1

30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz -1.45 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 1.500000 ms

Date: 8017.JUL.2018 10:49:36 Marker 1 [T1 ]
31.19 dBµV
52.200000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1
1
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

Date: 17.JUL.2018 10:50:26

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 17 of 24 Sheets
FCC ID: K4E917T4G

Detail of a single pulse train
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.71 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 3.900000 ms

80 Marker 1 [T1 ]
29.74 dBµV
53.700000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1 1
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 1.30 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 2.700000 ms

80 Marker 1 [T1 ]
Date: 17.JUL.2018 10:50:40
29.61 dBµV
58.800000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1
1
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

Date: 17.JUL.2018 10:51:05

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 18 of 24 Sheets
FCC ID: K4E917T4G

Detail of a single pulse train
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz 0.40 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 3.600000 ms

80 Marker 1 [T1 ]
29.94 dBµV
69.300000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

1 1
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz -0.91 dB
Ref 80 dBµV Att 10 dB SWT 150 ms 2.100000 ms

Date: 8017.JUL.2018 10:51:45 Marker 1 [T1 ]
31.07 dBµV
73.200000 ms A
70
SGL
1 PK *
CLRWR
60

50

40

11
30

20

10

0

-10

-20

Center 315.002973
MHz MHz 15 ms/

Date: 17.JUL.2018 10:52:00

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 19 of 24 Sheets
FCC ID: K4E917T4G

Activate Time
RBW 1 MHz Delta 1 [T1 ]
VBW 3 MHz -0.68 dB
Ref 80 dBµV Att 10 dB SWT 5 s 99.800000 ms

80 Marker 1 [T1 ]
33.04 dBµV
1.649000 s A
70

1 PK *
VIEW
60

50

40
1 1

30

20

10

0

-10

-20

MHz
Center 315.002973 MHz 500 ms/

Date: 17.JUL.2018 10:55:40

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 24 of 24 Sheets
FCC ID: K4E917T4G

6. CONDUCTED EMISSION MEASUREMENT

6.1 Description
This EUT is excused from investigation of conducted emission, for it is powered by DC
battery only. According to §15.207 (d), measurements to demonstrate compliance with
the conducted limits are not required for devices which only employ battery power for
operation and which do not operate from the AC power lines or contain provisions for
operation while connected to the AC power lines.

Rev. No 1.0

eETC Report No.:18-07-RBF-003 Sheet 25 of 24 Sheets
FCC ID: K4E917T4G

7 ANTENNA REQUIREMENT
7.1 Standard Applicable
According to §15.203, an intentional radiator shall be designed to ensure that no antenna
other than that furnished by the responsible party shall be used with the device.

7.2 Antenna Construction
The antenna is permanently integrated on RF Board, no consideration of replacement.
Please see photos submitted in Exhibit B.

Rev. No 1.0

Document Created: 2018-08-29 17:53:23
Document Modified: 2018-08-29 17:53:23

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