RF exposure evaluation

FCC ID: 2ABD3MS-WR26D

RF Exposure Info

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ABD3MS-WR26D

2. Evaluation Method and Limit

According to KDB447498 D01 General RF Exposure Guidance v06Section 4.3.1 Standalone SAR test
exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures,
standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions,
by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion
Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based
time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for
tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The
minimum test separation distance is determined by the smallest distance from the antenna and radiating
structures or outer surface of the device, according to the host form factor, exposure conditions and
platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1).
To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified
by the operating configurations and exposure conditions of the transmitter and applicable host platform
requirements, typically in the SAR measurement or SAR analysis report, according to the required published
RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of
justification and compliance must be included in the equipment approval, in lieu of the SAR report, to
qualify for the SAR test exclusion. When required, the device specific conditions described in the other
published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion
provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.“
[(max. power of channel, including tune-up tolerance, mW)/ (min. test separation distance, mm)] · [√f (GHz)]
≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where:
• f (GHz) is the RF channel transmit frequency in GHz
• Power and distance are rounded to the nearest mW and mm before calculation
• The result is rounded to one decimal place for comparison
• 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below
The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for
transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5
mm, a distance of 5 mm according to f) in section 4.1 is applied to determine SAR test exclusion.

When one of the following test exclusion conditions is satisfied for all combinations of simultaneous
transmission configurations, further equipment approval is not required to incorporate transmitter
modules in host devices that operate in the mixed mobile and portable host platform exposure conditions.
The grantee is responsible for documenting this according to Class I permissive change requirements.
Antennas that qualify for standalone SAR test exclusion must apply the estimated standalone SAR to
determine simultaneous transmission test exclusion.
a) The [∑ of (the highest measured or estimated SAR for each standalone antenna configuration,
adjusted for maximum tune-up tolerance) / 1.6 W/kg] + [∑ of MPE ratios] is ≤ 1.0.
b) The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating
in portable device exposure conditions are all ≤ 0.04, and the [∑ of MPE ratios] is ≤ 1.0.

3. Refer Evaluation Method

ANSI C95.1–1999: 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 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 2.1093: Radiofrequency radiation exposure evaluation: portable devices

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This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ABD3MS-WR26D

4. Conducted Power Results
[BT]
Mode Channel Frequency (MHz) Peak Conducted Output Power (dBm)
0 2402 4.665
GFSK 39 2441 3.336
78 2480 2.456
0 2402 3.331
π/4DQPSK 39 2441 3.177
78 2480 1.882
0 2402 3.622
8DPSK 39 2440 3.419
78 2480 2.166
0 2402 -4.828
GFSK(BT LE) 19 2440 -4.716
39 2480 -5.492

[2.4GWLAN]
Average Conducted Output Power
Mode Channel Frequency(MHz)
(dBm)
1 2412 8.57
IEEE 802.11b 6 2437 8.32
11 2462 8.11
1 2412 8.13
IEEE 802.11g 6 2437 8.24
11 2462 8.15
1 2412 6.48
IEEE 802.11n HT20 6 2437 6.75
11 2462 6.53
3 2422 5.21
IEEE 802.11n HT40 6 2437 6.29
9 2452 6.31

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This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
Page 3 of 5

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ABD3MS-WR26D

5. Manufacturing Tolerance
[BT]
GFSK (Peak)
Channel Channel 0 Channel 39 Channel 78
Target (dBm) 4.0 3.0 2.0
Tolerance ±(dB) 1.0 1.0 1.0
π/4DQPSK (Peak)
Channel Channel 0 Channel 39 Channel 78
Target (dBm) 3.0 3.0 2.0
Tolerance ±(dB) 1.0 1.0 1.0
8DPSK (Peak)
Channel Channel 0 Channel 39 Channel 78
Target (dBm) 3.0 3.0 2.0
Tolerance ±(dB) 1.0 1.0 1.0
GFSK BT LE (Peak)
Channel Channel 0 Channel 19 Channel 39
Target (dBm) -4.0 -4.0 -5.0
Tolerance ±(dB) 1.0 1.0 1.0

[2.4GWLAN]

IEEE 802.11b (Average)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 8.0 8.0 8.0
Tolerance ±(dB) 1.0 1.0 1.0
IEEE 802.11g (Average)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 8.0 8.0 8.0
Tolerance ±(dB) 1.0 1.0 1.0
IEEE 802.11n HT20 (Average)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 6.0 6.0 6.0
Tolerance ±(dB) 1.0 1.0 1.0
IEEE 802.11n HT40 (Average)
Channel Channel 3 Channel 6 Channel 9
Target (dBm) 5.0 6.0 6.0
Tolerance ±(dB) 1.0 1.0 1.0

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This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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Document Created: 2019-06-04 11:43:28
Document Modified: 2019-06-04 11:43:28

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