A3LSMT720U_SAR_Report_FCC_2 of 2

FCC ID: A3LSMT720U

RF Exposure Info

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FCCID_4351184

FCC ID. A3LSMT720U Attachment 7. – The Verification of Power Reduction Per the May 2017 TCBC Workshop notes, demonstration of proper functioning of the power reduction mechanism is required to support the corresponding SAR Configurations. The verification process was divided into two parts: 1. Power Reduction Verification for WLAN Antenna This device utilizes a power reduction mechanism for WLAN Antenna wireless modes for SAR compliance under some conditions when the device is being used in close proximity to the user’s hand. All SAR evaluations for this device were performed at the maximum allowed output Power when Proximity Sensor is activated. FCC KDB Publication 616217D04v01r02 section 6 was used as a guideline for selection SAR test distances for this device when being used in proximity senor used conditions. For detailed measurement conducted power results, please refer to the Section 11.

FCC ID. A3LSMT720U 2.1 Power Verification Procedure for WLAN Ant. The Power verification was performed according to the following procedure: Power Reduction Verification for WLAN mode Conducted Power (dBm) Mechanism(s) Mode/Band Triggered (Reduced Un-triggered(Max Power) Power) Proximity sensor On 2.4 ㎓ 802.11b (1ch – 11ch) 19.63 12.65 Proximity sensor On 2.4 ㎓ 802.11g (1ch – 11ch) 19.24 12.76 Proximity sensor On 2.4 ㎓ 802.11n(2ch – 10ch) 19.08 12.14 Proximity sensor On 5 ㎓ 802.11a 17.79 8.96 Proximity sensor On 5 ㎓ 802.11n 20 ㎒ 17.54 8.79 5 ㎓ 802.11n 40 ㎒ Proximity sensor On 17.07 8.52 (Except 38 ch) Proximity sensor On 5 ㎓ 802.11ac 20 ㎒ 17.12 8.56 5 ㎓ 802.11ac 40 ㎒ Proximity sensor On 17.18 8.77 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ Proximity sensor On 17.12 9.10 (Except 42,58,106 ch) 2.2 Procedures for determining proximity sensor triggering distances (KDB 616217 D04v01r02 §6.2) The distance verification procedure was performed according to the following procedure: A base station simulator was used to establish an RF connection and to monitor the power levels. The device being tested was placed below the relevant section of the phantom with the relevant side or edge of the device facing toward the phantom. The device was moved toward and away from the phantom to determine the distance at which the mechanism triggers and the output power is reduced, per KDB Publication 616217 D04v01r02 .Each applicable test position was evaluated. The distance were conformed to be the same or larger (more conservative) than the minimum distances provided by the manufacturer. Step 1 and 2 were repeated for the relevant modes, as appropriate Steps 1 through 3 were repeated for all distance-based power reduction mechanisms.

FCC ID. A3LSMT720U For detailed measurement conducted power results, please refer to the Section .9. Trigger distance Trigger distance Trigger distance Trigger distance Tissue simulating - Rear – Top – Left Side – Left corner Liquid Moving Moving Moving Moving Moving Moving Moving Moving away away away toward away from toward toward toward from from from phantom phantom phantom phantom phantom phantom phantom phantom 2 450 ㎒ Muscle 9 15 10 15 7 8 7 9 5 000 ㎒ Muscle 9 15 10 15 7 8 7 9 Distance Measurement verification for Proximity sensor Rear side – EUT Moving toward (trigger) to the Phantom Distance to DUT Output power (dBm) Distance 14 13 12 11 10 9 8 7 6 5 2.4 ㎓ 802.11b (1ch – 11ch) 19.57 19.67 19.7 19.67 19.57 12.56 12.68 12.66 12.74 12.62 2.4 ㎓ 802.11g (1ch – 11ch) 19.28 19.3 19.2 19.14 19.32 12.67 12.85 12.86 12.82 12.8 2.4 ㎓ 802.11n(2ch – 10ch) 19.04 19.17 19.02 19 18.98 12.13 12.12 12.2 12.12 12.19 5 ㎓ 802.11a 17.77 17.8 17.74 17.89 17.73 8.89 8.9 8.99 8.89 8.97 5 ㎓ 802.11n 20 ㎒ 17.49 17.62 17.6 17.45 17.51 8.86 8.71 8.82 8.88 8.87 5 ㎓ 802.11n 40 ㎒ (Except 38 ch) 17.07 17.15 17.12 17.08 17.17 8.6 8.56 8.54 8.47 8.48 5 ㎓ 802.11ac 20 ㎒ 17.18 17.12 17.05 17.07 17.04 8.62 8.54 8.49 8.65 8.64 5 ㎓ 802.11ac 40 ㎒ (Except 38 ch) 17.09 17.13 17.28 17.26 17.26 8.74 8.71 8.86 8.74 8.76 5 ㎓ 802.11ac 80 ㎒ (Except 42,58,106 ch) 17.22 17.05 17.16 17.1 17.19 9.14 9.19 9.02 9.07 9.06

FCC ID. A3LSMT720U Rear side – EUT Moving away (Release) from the Phantom Distance to DUT Output power (dBm) Distance 11 12 13 14 15 16 17 18 19 20 2.4 ㎓ 802.11b (1ch – 11ch) 12.65 12.57 12.58 12.57 12.75 19.62 19.7 19.61 19.66 19.57 2.4 ㎓ 802.11g (1ch – 11ch) 12.69 12.77 12.68 12.74 12.69 19.18 19.3 19.18 19.2 19.3 2.4 ㎓ 802.11n(2ch – 10ch) 12.04 12.13 12.12 12.05 12.1 19.03 19.05 19.06 19.02 19.09 5 ㎓ 802.11a 8.95 9.01 8.89 9.05 8.87 17.8 17.79 17.74 17.81 17.84 5 ㎓ 802.11n 20 ㎒ 8.75 8.69 8.79 8.71 8.69 17.52 17.57 17.64 17.55 17.64 5 ㎓ 802.11n 40 ㎒ 8.46 8.54 8.57 8.54 8.6 17.17 17.1 17.09 17.16 16.97 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 8.6 8.64 8.59 8.5 8.64 17.1 17.02 17.1 17.06 17.04 5 ㎓ 802.11ac 40 ㎒ 8.82 8.8 8.7 8.77 8.71 17.26 17.09 17.17 17.27 17.09 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 9.16 9.17 9.11 9.03 9.06 17.2 17.04 17.12 17.04 17.17 (Except 42,58,106 ch) Based on the most conservative measured triggering distance of 9 mm, additional Body SAR measurements were required at 8 mm from Rear side for the above modes. Top side – EUT Moving toward (trigger) to the Phantom Distance to DUT Output power (dBm) Distance 15 14 13 12 11 10 9 8 7 6 2.4 ㎓ 802.11b (1ch – 11ch) 19.61 19.71 19.65 19.53 19.54 12.58 12.68 12.6 12.59 12.6 2.4 ㎓ 802.11g (1ch – 11ch) 19.16 19.3 19.3 19.22 19.14 12.7 12.67 12.74 12.66 12.84 2.4 ㎓ 802.11n(2ch – 10ch) 19.13 19.06 19.06 19.01 19.12 12.11 12.24 12.12 12.14 12.2 5 ㎓ 802.11a 17.84 17.87 17.74 17.82 17.71 9.05 9 9.05 8.86 9.01 5 ㎓ 802.11n 20 ㎒ 17.61 17.62 17.44 17.52 17.55 8.84 8.72 8.87 8.71 8.7 5 ㎓ 802.11n 40 ㎒ 17.06 17.13 17.14 17.17 17.06 8.45 8.43 8.52 8.55 8.46 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 17.06 17.15 17.17 17.07 17.08 8.63 8.64 8.63 8.48 8.46 5 ㎓ 802.11ac 40 ㎒ 17.26 17.09 17.08 17.25 17.27 8.69 8.71 8.77 8.86 8.84 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 17.21 17.2 17.08 17.07 17.08 9.02 9.18 9.09 9.17 9.11 (Except 42,58,106 ch)

FCC ID. A3LSMT720U Top side – EUT Moving away (Release) from the Phantom Distance to DUT Output power (dBm) Distance 11 12 13 14 15 16 17 18 19 20 2.4 ㎓ 802.11b (1ch – 11ch) 12.65 12.74 12.62 12.58 12.7 19.67 19.61 19.66 19.53 19.54 2.4 ㎓ 802.11g (1ch – 11ch) 12.72 12.82 12.78 12.83 12.79 19.29 19.29 19.17 19.21 19.24 2.4 ㎓ 802.11n(2ch – 10ch) 12.11 12.1 12.21 12.09 12.24 19.01 19.1 19 19.02 19.16 5 ㎓ 802.11a 9.04 9.03 8.96 8.91 9.02 17.82 17.77 17.71 17.7 17.85 5 ㎓ 802.11n 20 ㎒ 8.84 8.78 8.85 8.69 8.8 17.64 17.58 17.52 17.61 17.48 5 ㎓ 802.11n 40 ㎒ 8.43 8.54 8.59 8.61 8.5 16.98 17.03 17.1 17.11 17.04 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 8.49 8.52 8.65 8.54 8.57 17.1 17.2 17.03 17.14 17.22 5 ㎓ 802.11ac 40 ㎒ 8.82 8.81 8.81 8.69 8.67 17.1 17.16 17.08 17.23 17.16 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 9.1 9 9.03 9.06 9.01 17.05 17.19 17.22 17.06 17.13 (Except 42,58,106 ch) Based on the most conservative measured triggering distance of 10 mm, additional Body SAR measurements were required at 9 mm from Rear side for the above modes. Left side – EUT Moving toward (trigger) to the Phantom Distance to DUT Output power (dBm) Distance 12 11 10 9 8 7 6 5 4 3 2.4 ㎓ 802.11b (1ch – 11ch) 19.72 19.64 19.63 19.61 19.65 12.6 12.68 12.67 12.61 12.62 2.4 ㎓ 802.11g (1ch – 11ch) 19.25 19.26 19.24 19.24 19.16 12.7 12.72 12.75 12.86 12.76 2.4 ㎓ 802.11n(2ch – 10ch) 19.06 19.18 18.99 19.16 19.01 12.05 12.14 12.16 12.21 12.24 5 ㎓ 802.11a 17.89 17.71 17.83 17.82 17.74 8.92 9 8.98 8.92 8.95 5 ㎓ 802.11n 20 ㎒ 17.48 17.6 17.51 17.56 17.45 8.7 8.76 8.88 8.74 8.84 5 ㎓ 802.11n 40 ㎒ 16.98 17.16 17.02 17.11 17.12 8.6 8.47 8.54 8.5 8.59 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 17.16 17.16 17.13 17.03 17.13 8.63 8.61 8.53 8.66 8.48 5 ㎓ 802.11ac 40 ㎒ 17.2 17.24 17.17 17.12 17.17 8.77 8.67 8.73 8.78 8.82 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 17.18 17.2 17.07 17.07 17.07 9 9.03 9.08 9.05 9.06 (Except 42,58,106 ch)

FCC ID. A3LSMT720U Left side – EUT Moving away (Release) from the Phantom Distance to DUT Output power (dBm) Distance 4 5 6 7 8 9 10 11 12 13 2.4 ㎓ 802.11b (1ch – 11ch) 12.67 12.73 12.72 12.62 12.68 19.59 19.57 19.61 19.65 19.55 2.4 ㎓ 802.11g (1ch – 11ch) 12.86 12.8 12.76 12.7 12.85 19.18 19.25 19.24 19.18 19.21 2.4 ㎓ 802.11n(2ch – 10ch) 12.21 12.16 12.18 12.2 12.18 19.12 19.04 19.01 19.05 19.04 5 ㎓ 802.11a 9.04 8.97 8.87 9.03 8.99 17.71 17.75 17.75 17.78 17.69 5 ㎓ 802.11n 20 ㎒ 8.8 8.76 8.86 8.69 8.71 17.64 17.52 17.56 17.54 17.53 5 ㎓ 802.11n 40 ㎒ 8.57 8.57 8.5 8.51 8.46 17.03 17.09 17.04 17.13 17.07 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 8.64 8.49 8.47 8.54 8.52 17.16 17.19 17.16 17.14 17.05 5 ㎓ 802.11ac 40 ㎒ 8.82 8.81 8.82 8.77 8.79 17.24 17.2 17.24 17.26 17.09 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 9.03 9.2 9.01 9.15 9.16 17.16 17.02 17.14 17.11 17.12 (Except 42,58,106 ch) Based on the most conservative measured triggering distance of 7 mm, additional Body SAR measurements were required at 6 mm from Rear side for the above modes. Left Corner side – EUT Moving toward (trigger) to the Phantom Distance to DUT Output power (dBm) Distance 12 11 10 9 8 7 6 5 4 3 2.4 ㎓ 802.11b (1ch – 11ch) 19.57 19.68 19.73 19.55 19.63 12.6 12.65 12.62 12.71 12.74 2.4 ㎓ 802.11g (1ch – 11ch) 19.32 19.13 19.17 19.27 19.3 12.73 12.69 12.66 12.71 12.73 2.4 ㎓ 802.11n(2ch – 10ch) 19.09 19.07 19.11 19.04 19.16 12.22 12.07 12.04 12.13 12.19 5 ㎓ 802.11a 17.83 17.8 17.72 17.82 17.87 9.04 8.88 9.01 9.05 9.03 5 ㎓ 802.11n 20 ㎒ 17.48 17.57 17.48 17.44 17.45 8.77 8.72 8.78 8.76 8.73 5 ㎓ 802.11n 40 ㎒ 17.02 16.97 17.13 17.1 16.97 8.47 8.6 8.6 8.51 8.46 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 17.04 17.03 17.03 17.16 17.22 8.59 8.51 8.54 8.59 8.64 5 ㎓ 802.11ac 40 ㎒ 17.25 17.25 17.09 17.15 17.08 8.87 8.78 8.72 8.72 8.77 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 17.02 17.08 17.07 17.09 17.04 9.08 9.1 9.1 9.04 9.2 (Except 42,58,106 ch)

FCC ID. A3LSMT720U Left Corner side – EUT Moving away (Release) from the Phantom Distance to DUT Output power (dBm) Distance 5 6 7 8 9 10 11 12 13 14 2.4 ㎓ 802.11b (1ch – 11ch) 12.7 12.72 12.68 12.69 12.67 19.67 19.55 19.57 19.63 19.56 2.4 ㎓ 802.11g (1ch – 11ch) 12.76 12.85 12.66 12.86 12.73 19.18 19.19 19.22 19.17 19.28 2.4 ㎓ 802.11n(2ch – 10ch) 12.15 12.14 12.24 12.04 12.07 19.14 19.02 19.05 19.14 19.11 5 ㎓ 802.11a 9.05 8.91 8.97 8.95 8.98 17.7 17.75 17.87 17.81 17.81 5 ㎓ 802.11n 20 ㎒ 8.75 8.86 8.83 8.73 8.81 17.49 17.63 17.5 17.6 17.52 5 ㎓ 802.11n 40 ㎒ 8.49 8.58 8.62 8.53 8.43 17.03 17.02 17 17.11 17.05 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 8.52 8.6 8.54 8.63 8.66 17.13 17.11 17.09 17.21 17.2 5 ㎓ 802.11ac 40 ㎒ 8.85 8.68 8.67 8.73 8.67 17.2 17.25 17.25 17.15 17.08 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 9.04 9.12 9.13 9.17 9.18 17.14 17.03 17.04 17.15 17.04 (Except 42,58,106 ch) Based on the most conservative measured triggering distance of 7 mm, additional Body SAR measurements were required at 6 mm from Rear side for the above modes. 2.3 Proximity Sensor Coverage for SAR measurements (KDB 616217 D04v01r02 §6.3) As there is no spatial offset between the antenna and the proximity sensor element, proximity sensor coverage did not need to be assessed.

FCC ID. A3LSMT720U 2.4 Proximity Sensor Tilt Angle Assessment (KDB 616217 D04v01r02 §6.4) The DUT was positioned directly below the flat phantom at the minimum measured trigger distance with Top/Left side parallel to the base of the flat phantom for each band. The EUT was rotated about Bottom side for angles up to ±45°. If the output power increased during the rotation the DUT was moved 1mm toward the phantom and the rotation repeated. This procedure was repeated until the power remained reduced for all angles up ±45°. Proximity sensor tilt angle assessment (Bottom side) KDB 616217 §6.4 Summary of Tablet Tilt Angle influence to Proximity Sensor Triggering (Top side) Minimum Power reduction status distance at which power Band reduction (㎒) was -45° -40° -30° -20° -10° 0° 10° 20° 30° 40° 45° maintaine d over- 45° 2.4 ㎓ 802.11b (1ch – 11ch) 10 mm 12.62 12.72 12.72 12.56 12.72 12.7 12.7 12.57 12.61 12.58 12.74 2.4 ㎓ 802.11g (1ch – 11ch) 10 mm 12.71 12.7 12.77 12.86 12.74 12.71 12.79 12.76 12.76 12.72 12.67 2.4 ㎓ 802.11n(2ch – 10ch) 10 mm 12.08 12.23 12.23 12.16 12.05 12.14 12.09 12.07 12.21 12.06 12.06 5 ㎓ 802.11a 10 mm 9.01 8.96 9.01 8.94 8.89 8.87 9.05 8.93 9.04 8.97 9.03 5 ㎓ 802.11n 20 ㎒ 10 mm 8.79 8.85 8.73 8.89 8.77 8.86 8.72 8.89 8.81 8.74 8.84 5 ㎓ 802.11n 40 ㎒ 10 mm 8.42 8.57 8.51 8.46 8.58 8.49 8.49 8.62 8.5 8.48 8.42 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 10 mm 8.47 8.66 8.48 8.65 8.56 8.55 8.51 8.65 8.47 8.59 8.51 5 ㎓ 802.11ac 40 ㎒ 10 mm 8.76 8.75 8.77 8.7 8.79 8.87 8.87 8.8 8.67 8.72 8.68 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 10 mm 9.11 9.09 9 9.07 9.19 9.2 9.16 9.05 9.09 9.01 9.18 (Except 42,58,106 ch)

FCC ID. A3LSMT720U Summary of Tablet Tilt Angle influence to Proximity Sensor Triggering (Left side) Minimum Power reduction status distance Band at which power reduction was (㎒) -45° -40° -30° -20° -10° 0° 10° 20° 30° 40° 45° maintained over-45° 2.4 ㎓ 802.11b 7 mm 12.66 12.7 12.57 12.69 12.64 12.66 12.66 12.62 12.68 12.67 12.71 (1ch – 11ch) 2.4 ㎓ 802.11g 7 mm 12.68 12.78 12.83 12.72 12.7 12.79 12.66 12.81 12.66 12.76 12.84 (1ch – 11ch) 2.4 ㎓ 802.11n 7 mm 12.22 12.08 12.12 12.07 12.07 12.22 12.18 12.14 12.22 12.07 12.06 (2ch – 10ch) 5 ㎓ 802.11a 7 mm 8.94 8.96 8.91 8.98 8.86 8.97 9 8.91 8.99 8.93 8.91 5 ㎓ 802.11n 20 ㎒ 7 mm 8.84 8.79 8.74 8.7 8.88 8.84 8.72 8.76 8.75 8.69 8.69 5 ㎓ 802.11n 40 ㎒ 7 mm 8.6 8.51 8.55 8.46 8.62 8.53 8.45 8.6 8.62 8.56 8.42 (Except 38 ch) 5 ㎓ 802.11ac 20 ㎒ 7 mm 8.56 8.66 8.66 8.64 8.66 8.47 8.63 8.55 8.65 8.46 8.55 5 ㎓ 802.11ac 40 ㎒ 7 mm 8.81 8.72 8.79 8.71 8.79 8.74 8.78 8.83 8.87 8.7 8.81 (Except 38 ch) 5 ㎓ 802.11ac 80 ㎒ 7 mm 9.18 9.06 9.1 9.15 9.06 9.14 9.15 9.03 9.1 9.04 9.01 (Except 42,58,106 ch) 2.5 Resulting test positions for Tablet SAR measurements §6.2 Worst case §6.3 §6.4 Wireless technologies Position Triggering distance for Coverage Tilt Angle Distance Tablet SAR Rear 9 N/A N/A 8 WLAN 2.4 ㎓/ Top Side 10 N/A 10 9 5 ㎓ Left Side 7 N/A N/A 6 Left Conner 7 N/A N/A 6 Note: FCC KDB Publication 616217 D04v01r02 Section 6 was used as a guideline for selecting SAR test distances for this device when being used in proximity use conditions.


Document Created: 2019-07-11 11:53:16
Document Modified: 2019-07-11 11:53:16
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