RF Exposure

FCC ID: HCOT37DVUS4A

RF Exposure Info

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FCCID_2359764

Exposure Evaluation t-Series t37™ps Dual Band Medium Remote Unit FCCID: HCOT37DVUS4A Date: July 29, 2014 Model No.: t37-DVU-S4N Labs: 8618 Commerce Court, Burnaby, BC, V5A 4N6, Canada Daryl Meerkerk Guihua Sophie Piao Manager Test Engineer Dali Wireless, Inc. 535 Middlefield Road, Suite 280 Menlo Park, CA 94025 http://www.daliwireless.com CONFIDENTAL AND PROPRIETARY This document contains information proprietary to Dali Wireless. Any disclosure, use or duplication of this document or of any of the information contained herein for other than the specific purpose for which it was disclosed is expressly prohibited, except as Dali Wireless may otherwise agree to in writing. © Copyright 2014 Dali Wireless. All Rights Reserved

RF Exposure Evaluation According to FCC Part 1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. More information on evaluating compliance with these limits can be found in the FCC's OST/OET Bulletin Number 65, “Evaluating Compliance with FCC-Specified Guidelines for Human Exposure to Radiofrequency Radiation”. In the Frequency Range of 300 to 1500 MHz, the maximum power density limit for the general population/uncontrolled exposures is F/300 for an average time of 6 seconds. The antenna connected to the product is specific to the deployment. The worst case scenario occurs when using a very high gain antenna as shown in the following example: The highest expected output power may be 1 dB above the rated 37 dBm. For an output level of 38 dBm with an antenna gain of 21 dB, the EIRP is 59 dBm. The maximum power density safe exposure level for general population/uncontrolled exposure of 6 seconds for the frequency of 512 MHz is 0.34 mW/cm2. Conducted Output Max Antenna Max EIRP (mW) Power Density Limit Safe Distance (cm) Power (dBm) Gain (dBi) Allowed (mW/cm²) 38 21 794000 0.34 431 RF Exposure Evaluation Distance Calculation Where: d = Distance to the center of radiation of the antenna (cm) for the allowable Power Density 2 S = Allowable Power Density Limit (mW/cm ) EIRP = Equivalent isotropically radiated power (mW) = 10 [TX Power (dBm) + Ant Gain (dBi)/10] As shown above, the minimum distance where the MPE limit is reached is 431 cm from the unit with a 21 dBi antenna and no distribution loss. If the antenna will be positioned closer to end users than 431 cm, then the installer must calculate the safe distance for a given installation using the formulas provided. Dali Wireless t37-ps Exposure Evaluation Page 2 of 2


Document Created: 2014-07-31 13:41:55
Document Modified: 2014-07-31 13:41:55
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