EMC

陈辉

RF Exposure-FCC-MPE

Shenzhen GMK Technology Co., Ltd K1 NucBox 2AXUD-K1 2AXUDK1 k1

Shenzhen GMK Technology Co., Ltd K1 2AXUD-K1 2AXUDK1 k1

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Document Document DEVICE REPORTGetApplicationAttachment.html?id=6550918

Shenzhen Tongzhou Testing Co.,Ltd

FCC ID: 2AXUD-K1

Maximum Permissible Exposure Report

Product Information
EUT
Model Number
Model Declaration Test Model Power Supply Hardware version Software version Sample ID Bluetooth Bluetooth Version Operation Frenquency Channel Number
Modulation Technology
Data Rates
Antenna Type And Gain WiFi

: NucBox

K1,K2,K3,K4,K5,K6,K7,K8,K9,K10,K11,K12,K13,K14,K15,K16,K17,K18,K19,K

:

20,K21,K22,K23,K25,K26,K27,K28,K29,K30,K100,K200,K300,M1,M2,M3,M4, M5,M6,M7,M8,M9,M10,M11,M12,M13,M14,M15,M16,M17,M18,M19,M20,M21

,M22,M23,M25,M26,M27,M28,M29,M30,M100,M200,M300,GNi12U,KN2,KN3

: All the same except for the model name

: K1

: DC 19V by adpater

: IP3_ARB20_V10

: Windows 11 Pro 22H2

: TZ230404285­2#&TZ230404285­4#

: V5.2

: 2402- 2480 MHz

:

79 40

Channels Channels

for for

Bluetooth BR/EDR(DSS) BLE (DTS)

:

GFSK, /4-DQPSK, 8-DPSK GFSK for BLE (DTS)

for

Bluetooth

BR/EDR

(DSS)

:

Bluetooth BR/EDR BLE (DTS): 1Mbps

(DSS):

1/2/3Mbps

:

Internal 1.3dBi

Antenna

1:

WLAN

: Supported IEEE 802.11a/b/g/n/ac

WLAN FCC Operation Frequency
WLAN Channel Number
WLAN Modulation Technology
Antenna Type And Gain

IEEE 802.11b:2412-2462MHz

IEEE 802.11g:2412-2462MHz

IEEE 802.11n HT20:2412-2462MHz / 5180-5240MHz

:

IEEE IEEE

802.11n HT40: 2422-2452MHz 802.11a: 5180-5240MHz

/

5190-5230MHz

IEEE 802.11ac VHT20: 5180-5240MHz

IEEE 802.11ac VHT40: 5190-5230MHz

IEEE 802.11ac VHT80: 5210MHz

11 Channels for 2412-2462MHz(IEEE 802.11b/g/n HT20) 7 Channels for 2422-2452MHz(IEEE 802.11n HT40) : 4 Channels for 5180-5240MHz (IEEE 802.11a/ac VHT20/n HT20) 2 Channels for 5190-5230MHz (IEEE 802.11ac VHT40/n HT40) 1 Channels for 5210MHz (IEEE 802.11ac VHT80)

IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK) IEEE 802.11g: OFDM (64QAM, 16QAM, QPSK, BPSK) : IEEE 802.11n: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11a: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11ac: OFDM (256QAM, 64QAM, 16QAM, QPSK, BPSK)

Internal Antenna 1:

:

1.3dBi (Max.), for TX/RX (WLAN 2.4G Band) 1.55dBi (Max.), for TX/RX (WLAN 5.2G Band)

Internal Antenna 2:

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Shenzhen Tongzhou Testing Co.,Ltd
1.3dBi (Max.), for TX/RX (WLAN 2.4G Band) 1.55dBi (Max.), for TX/RX (WLAN 5.2G Band)

FCC ID: 2AXUD-K1

Note 1: Antenna position refer to EUT Photos. Note 2: the above information was supplied by the applicant.

2. Evaluation Method
Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission's guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with.
In accordance with KDB447498D01 for 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 modelled 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. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance.

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Shenzhen Tongzhou Testing Co.,Ltd
3. Limit

FCC ID: 2AXUD-K1

3. 1 Refer evaluation method

ANSI C95.1­1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices

3. 2 Limit

Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure

Frequency

Electric Field Magnetic Field Power Density Averaging Time

Range(MHz) Strength(V/m) Strength(A/m)

(mW/cm²)

(minute)

Limits for Occupational/Controlled Exposure

0.3 ­ 3.0

614

1.63

(100) *

6

3.0 ­ 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

Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure

Frequency

Electric Field Magnetic Field Power Density Averaging Time

Range(MHz) Strength(V/m) Strength(A/m)

(mW/cm²)

(minute)

Limits for Occupational/Controlled Exposure

0.3 ­ 3.0

614

1.63

(100) *

30

3.0 ­ 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

4. MPE Calculation Method

Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01

S=PG/4R²

Where: S=power density P=power input to antenna 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

5. Antenna Information
This Product can only use antennas certificated as follows provided by manufacturer; Antenna Gain and type refer to Product information

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Shenzhen Tongzhou Testing Co.,Ltd
6. Conducted Power
2.4G Band: Bluetooth(BDR+EDR)
TestMode DH5 2DH5 3DH5
Bluetooth(BLE)
TestMode BLE_1M
WiFi 2.4GHz Band
TestMode
11B
11G
11N20MIMO
11N40MIMO

Antenna
Ant1
Ant1
Ant1
Antenna
Ant1
Antenna Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total

Channel
2402 2441 2480 2402 2441 2480 2402 2441 2480
Channel
2402 2440 2480
Channel
2412 2412 2437 2437 2462 2462 2412 2412 2437 2437 2462 2462 2412 2412 2412 2437 2437 2437 2462 2462 2462 2422 2422 2422 2437 2437 2437 2452 2452 2452

FCC ID: 2AXUD-K1
Result[dBm]
3.65 4.26 1.79 3.93 4.33 2.16 4.13 4.45 2.29
Result[dBm]
-4.09 -3.59 -5.86
Result[dBm]
16.54 16.14 17.82 17.16 17.08 16.53 10.05 9.94 11.12 10.99 10.51 10.31 8.90 8.59 11.76 9.85 9.75 12.81 9.64 9.42 12.54 9.85 9.36 12.62 10.59 9.94 13.29 9.83 9.78 12.82

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Shenzhen Tongzhou Testing Co.,Ltd
5G Band UNII-1 Band
TestMode 11A
11N20MIMO
11N40MIMO
11AC20MIMO
11AC40MIMO 11AC80MIMO

Antenna
Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total Ant1 Ant2 total

Channel
5180 5180 5200 5200 5240 5240 5180 5180 5180 5200 5200 5200 5240 5240 5240 5190 5190 5190 5230 5230 5230 5180 5180 5180 5200 5200 5200 5240 5240 5240 5190 5190 5190 5230 5230 5230 5210 5210 5210

FCC ID: 2AXUD-K1
Result[dBm] 10.79 7.98 11.14 8.49 11.67 9.14 9.71 6.78 11.50 9.91 7.71 11.96 10.64 7.98 12.52 9.68 7.51 11.74 9.52 7.43 11.61 9.80 6.86 11.58 10.12 7.42 11.99 10.06 7.26 11.89 9.84 6.91 11.63 9.62 6.86 11.47 8.26 6.01 10.29

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Shenzhen Tongzhou Testing Co.,Ltd
7. Manufacturing Tolerance

Bluetooth(BDR+EDR)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)

GFSK (Peak)

Channel 0

Channel 39

3.0

4.0

1.0

1.0

/4-DQPSK (Peak)

Channel 0

Channel 39

3.5

4.0

1.0

1.0

8-DPSK (Peak)

Channel 0

Channel 39

3.5

4.0

1.0

1.0

Bluetooth(BLE)
Channel Target (dBm) Tolerance ±(dB)

GFSK(1Mbps) (Peak)

Channel 0

Channel 19

-4.5

-4.0

1.0

1.0

WiFi 2.4GHz Band ­ Antenna 1

IEEE 802.11b(Average)

Channel

Channel 1

Channel 6

Target (dBm)

16.0

17.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11g (Average)

Channel

Channel 1

Channel 6

Target (dBm)

9.5

10.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11n HT20 (Average)

Channel

Channel 1

Channel 6

Target (dBm)

8.5

9.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11n HT40 (Average)

Channel

Channel 3

Channel 6

Target (dBm)

9.5

10.0

Tolerance ±(dB)

1.0

1.0

WiFi 2.4GHz Band ­ Antenna 2

IEEE 802.11b(Average)

Channel

Channel 1

Channel 6

Target (dBm)

15.5

16.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11g (Average)

Channel

Channel 1

Channel 6

Target (dBm)

9.5

10.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11n HT20 (Average)

Channel

Channel 1

Channel 6

Target (dBm)

8.0

9.5

Tolerance ±(dB)

1.0

1.0

IEEE 802.11n HT40 (Average)

Channel

Channel 3

Channel 6

Target (dBm)

9.0

9.5

Tolerance ±(dB)

1.0

1.0

FCC ID: 2AXUD-K1
Channel 78 1.5 1.0
Channel 78 1.5 1.0
Channel 78 2.0 1.0
Channel 39 -6.5 1.0
Channel 11 16.5 1.0
Channel 11 10.0 1.0
Channel 11 9.0 1.0
Channel 9 9.5 1.0
Channel 11 16.0 1.0
Channel 11 10.0 1.0
Channel 11 9.0 1.0
Channel 9 9.5 1.0

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Shenzhen Tongzhou Testing Co.,Ltd

UNII-1 Band ­ Antenna 1
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)

IEEE 802.11a (Average)

Channel 36

Channel 40

10.5

10.5

1.0

1.0

IEEE 802.11n HT20 (Average)

Channel 36

Channel 40

9.0

9.5

1.0

1.0

IEEE 802.11ac VHT20 (Average)

Channel 36

Channel 40

5.0

5.5

1.0

1.0

IEEE 802.11n HT40 (Average)

Channel 38

Channel 46

9.0

9.0

1.0

1.0

IEEE 802.11ac VHT40 (Average)

Channel 38

Channel 46

9.5

9.0

1.0

1.0

IEEE 802.11ac VHT80 (Average)

Channel 42

--

8.0

--

1.0

--

UNII-1 Band ­ Antenna 2
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)

IEEE 802.11a (Average)

Channel 36

Channel 40

7.5

8.0

1.0

1.0

IEEE 802.11n HT20 (Average)

Channel 36

Channel 40

6.5

7.0

1.0

1.0

IEEE 802.11ac VHT20 (Average)

Channel 36

Channel 40

6.5

7.0

1.0

1.0

IEEE 802.11n HT40 (Average)

Channel 38

Channel 46

7.0

7.0

1.0

1.0

IEEE 802.11ac VHT40 (Average)

Channel 38

Channel 46

6.5

6.5

1.0

1.0

IEEE 802.11ac VHT80 (Average)

Channel 42

--

5.5

--

1.0

--

FCC ID: 2AXUD-K1
Channel 48 11.0 1.0
Channel 48 10.0 1.0
Channel 48 7.5 1.0
----
----
----
Channel 48 8.5 1.0
Channel 48 7.5 1.0
Channel 48 7.0 1.0
----
----
----

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Shenzhen Tongzhou Testing Co.,Ltd
8. Measurement Results

FCC ID: 2AXUD-K1

8.1 Standalone MPE

As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna refer to antenna information, the RF power density can be obtained.
Bluetooth(BDR+EDR)

Modulation Type

Output power

Antenna Gain (dBi)

Antenna Gain (linear)

Duty Cycle

MPE (mW/cm2)

MPE Limits

dBm

mW

(mW/cm2)

GFSK

5.0

3.1623

1.3

1.3490 100% 0.0008 1.0000

/4-DQPSK

5.0

3.1623

1.3

1.3490 100% 0.0008 1.0000

8-DPSK

5.0

3.1623

1.3

1.3490 100% 0.0008 1.0000

Bluetooth(BLE) Modulation Type GFSK(1Mbps)

Output power

dBm -3.0

mW 0.5012

Antenna Gain (dBi)

Antenna Gain (linear)

1.3

1.3490

Duty Cycle 100%

MPE

MPE

(mW/cm2) Limits (mW/cm2)
0.0001 1.0000

WiFi 2.4GHz Band ­ Ant 1

Modulation Type
IEEE 802.11b IEEE 802.11g IEEE 802.11n HT20 IEEE 802.11n HT40

Output power

dBm 18.5 11.5 10.5 11.0

mW 70.7946 14.1254 11.2202 12.5893

Antenna Gain (dBi)
1.55 1.55 1.55 1.55

Antenna Gain (linear)
1.4289 1.4289 1.4289 1.4289

Duty Cycle
100% 100% 100% 100%

MPE

MPE

(mW/cm2) Limits (mW/cm2)
0.0201 1.0000 0.0040 1.0000 0.0032 1.0000 0.0036 1.0000

WiFi 2.4GHz Band ­ Ant 2

Modulation Type
IEEE 802.11b IEEE 802.11g IEEE 802.11n HT20 IEEE 802.11n HT40

Output power

dBm 17.5 11.5 10.5 10.5

mW 56.2341 14.1254 11.2202 11.2202

Antenna Gain (dBi)
1.55 1.55 1.55 1.55

Antenna Gain (linear)
1.4289 1.4289 1.4289 1.4289

Duty Cycle
100% 100% 100% 100%

MPE

MPE

(mW/cm2) Limits (mW/cm2)
0.0160 1.0000 0.0040 1.0000 0.0032 1.0000 0.0032 1.0000

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Shenzhen Tongzhou Testing Co.,Ltd

UNII-1 Band ­ Ant 1
Modulation Type
IEEE 802.11a IEEE 802.11n HT20 IEEE 802.11ac VHT20 IEEE 802.11n HT40 IEEE 802.11ac VHT40 IEEE 802.11ac VHT80

Output power

dBm 12.0 11.0 10.5 10.0 10.5 9.0

mW 15.8489 12.5893 11.2202 10.0000 11.2202 7.9433

Antenna Gain (dBi)
1.55 1.55 1.55 1.55 1.55 1.55

Antenna Gain (linear)
1.4289 1.4289 1.4289 1.4289 1.4289 1.4289

FCC ID: 2AXUD-K1

Duty
Cycle
100% 100% 100% 100% 100% 100%

MPE

MPE

(mW/cm2) Limits (mW/cm2)
0.0045 1.0000 0.0036 1.0000 0.0032 1.0000 0.0028 1.0000 0.0032 1.0000 0.0023 1.0000

UNII-1 Band ­ Ant 2
Modulation Type
IEEE 802.11a IEEE 802.11n HT20 IEEE 802.11ac VHT20 IEEE 802.11n HT40 IEEE 802.11ac VHT40 IEEE 802.11ac VHT80

Output power

dBm 9.5 8.5 8.0 8.0 7.5 6.5

mW 8.9125 7.0795 6.3096 6.3096 5.6234 4.4668

Antenna Gain (dBi)

Antenna Gain (linear)

1.55

1.4289

1.55

1.4289

1.55

1.4289

1.55

1.4289

1.55

1.4289

1.55

1.4289

Duty
Cycle
100% 100% 100% 100% 100% 100%

MPE

MPE

(mW/cm2) Limits (mW/cm2)
0.0025 1.0000 0.0020 1.0000 0.0018 1.0000 0.0018 1.0000 0.0016 1.0000 0.0013 1.0000

Remark: 1. Output power including tune-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer;

8.2 Simultaneous Transmission MPE

Bluetooth + Wi-Fi

Maximum

Maximum

MPE(mW/cm2) MPE(mW/cm2)

BT Ant.
0.0008

WIFI Ant.1
0.0201

Maximum MPE(mW/cm2)
WIFI Ant.2
0.0160

MPE (mW/cm2)
0.0369

Limit (mW/cm2)
1.0000

Remark: 1. Output power including tune-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer;

Results PASS

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Shenzhen Tongzhou Testing Co.,Ltd
9. Conclusion

FCC ID: 2AXUD-K1

The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device.
----------------THE END OF REPORT---------------

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Related FCC IDs:

• 2AXUD-K1 - Shenzhen GMK Technology Co., Ltd NucBox [-K1]
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