2ABRC-ALWDCNZZWireless Digital to Analog Converter

Optoma NuForce WDC200 Wireless DAC User’s Manual NuForce WDC200 Wireless DAC User’s Manual NuForc e WDC200 Wireless DAC PB 1 F C C S TATEMENTS SAFETY PRE CAUTIONS Observe the f ollowing Safet y Precautions when operating the devic e. • Only use the acce ssories that are included in the package. • Do not expo se the device to direct sunlight. • Do not place the de vice in a damp condition or high humidity. • Do not co ver or block any ventilation openings of the device. • Do not drop the de vice or subject it to severe impact. • Do not operat e the device during thunderstorms. • Make sure all c ables are properly connected before turning the device on. • Protec t all cables and power adapter from being walked on or pinched. • Keep the devic e away from water. • Unplug the power adapt er before cleaning. Wipe the device with a clean, dry cloth. • Do not attempt t o repair this device yourself. This equipment complies with FCC RF radiation exposure limits set for an uncontrolled environment. To maintain compliance with FCC RF exposure requirements, the user and installer should keeping a minimum 20cm distance separation between the user's body and 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. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the useruser's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help - This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 2 NuForce WDC200 Wireless DAC TABLE OF CONTENTS INTRODUCTION .........................................................................................................................3 Package Contents ...........................................................................................................................................................3 Product Overview ...........................................................................................................................................................3 Front View .........................................................................................................................................................................................................................................................3 Rear View ...........................................................................................................................................................................................................................................................3 SETTING UP YOUR WIRELESS DAC ......................................................................................4 Installing the Antenna ..................................................................................................................................................4 Connecting the Power Adapter ...............................................................................................................................4 Power on Your Wireless DAC .....................................................................................................................................5 CONFIGURING WIRELESS CONNECTION ...........................................................................6 Direct Connection (AP mode) ...................................................................................................................................6 Android (DLNA Player) .....................................................................................................................................................................................................................6 iOS/MAC (AirPlay) ....................................................................................................................................................................................................................................7 Windows 7 (Windows Media Player).................................................................................................................................................................................7 Client Mode (STA) ............................................................................................................................................................9 Wi-Fi Protected Setup (WPS) ...................................................................................................................................10 Configuring Other Advanced Settings ..............................................................................................................10 CONFIGURING WIRED CONN…

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Optoma Corporation Date: 07 January, 2015 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The Optoma Corporation, the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co.,Ltd., to act on the behalf of the Optoma Corporation solely in matters relating to the application for an FCC equipment authorization for FCC ID 2ABRC-ALWDCNZZ including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. on our behalf of the Optoma Corporation in connection with the Application shall have the same effect as acts of the Optoma Corporation. The Optoma Corporationd also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Thank you for your attention to this matter. Yours Sincerely, Francine Wu [email protected] Optoma Corporation

Optoma Corporation Date: 07 January, 2015 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Optoma Corporation FCC ID: 2ABRC-ALWDCNZZ FCC Certification Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. Optoma Corporation requests that the following documents regarding this submission for FCC ID: 2ABRC-ALWDCNZZ be kept confidential: Exhibit Type File Name Block Diagram Block Diagram.pdf Schematics Circuit Diagram.pdf Operational Description circuit description for fcc.pdf Those documents contain detailed system and equipment description and related information about the product which Optoma Corporation considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, Optoma Corporation considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Yours Sincerely, Francine Wu [email protected] Optoma Corporation

Report No.: BL-SZ14A0075-601 ANNEX C EUT PHOTOS C.1 Appearance of the EUT THE FRONT OF EUT THE BACK OF EUT Report No.: BL-SZ14A0075-601 THE LEFT OF EUT THE RIGHT OF EUT Report No.: BL-SZ14A0075-601 THE UP OF EUT THE DOWN OF EUT Report No.: BL-SZ14A0075-601 Charger

Label and Label Location Label: Label Location:

Report No.: BL-SZ14A0075-601 C.2 Inside of the EUT EUT UNCOVER VIEW 1 EUT UNCOVER VIEW 2 Dipole Antenna Report No.: BL-SZ14A0075-601 MAIN BOARD TOP VIEW 1 MAIN BOARD BACK VIEW 1 RF Module Report No.: BL-SZ14A0075-601 MAIN BOARD TOP VIEW 2 MAIN BOARD TOP VIEW 3 Report No.: BL-SZ14A0075-601 MAIN BOARD BACK VIEW 3 MAIN BOARD TOP VIEW 4 Report No.: BL-SZ14A0075-601 MAIN BOARD BACK VIEW 4 MAIN BOARD TOP VIEW 5 Report No.: BL-SZ14A0075-601 MAIN BOARD BACK VIEW 5

RF Exposure Evaluation For FCC ID: 2ABRC-ALW DC N Z Z Refer user manual this device is a fixed wifi devices was designed used in Mobile devices that the minimum distance between human’s body is 20cm. Based on the 47CFR 2.1091, this device belongs to Mobile device. The definition of the category as following: Mobile Derives: CFR Title 47 §2.1091(b) (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC KDB 447498 D01 General RF Exposure Guidance v05r02 Limit Devices operating in standalone mobile exposure conditions may contain a single transmitter or multiple transmitters that do not transmit simultaneously. A minimum test separation distance ≥ 20 cm is required between the antenna and radiating structures of the device and nearby persons to apply mobile device exposure limits. The distance must be fully supported by the operating and installation configurations of the transmitter and its antenna(s), according to the source-based time-averaged maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations are applied to determine compliance, the most conservative operating configurations and exposure conditions must be evaluated. The minimum test separation distance required for a device to comply with mobile exposure conditions must be clearly identified in the installation and operating instructions, for all installation and exposure conditions, to enable users and installers to comply with RF exposure requirements. For mobile devices that have the potential to operate in portable device exposure conditions, similar to the configurations described in § 2.1091(d)(4), a KDB inquiry is required to determine the SAR test requirements for demonstrating compliance. When the categorical exclusion provision of § 2.1091(c) applies, the minimum test separation distance may be estimated, when applicable, by simple calculations according to plane-wave equivalent conditions, to ensure the transmitter and its antenna(s) can operate in manners that meet or exceed the estimated distance. The source-based time-averaged maximum radiated power, according to the maximum antenna gain, must be applied to calculate the field strength and power density required to establish the minimum test separation distance. When the estimated test separation distance becomes overly conservative and does not support compliance, MPE measurement or computational modeling may be used to determine the required minimum separation distance. RF Exposure Evaluation Result: FCC (Worst case) According to FCC Part 1.1307, systems operating under the provisions of this section shall be operated in a manner the ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidelines. Limits for General Population/ Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength(E)(V/m) Magnetic Field Strength (H)(A/m) Power Density (S)(mW/cm 2 ) 0.3-1.34 614 1.63 (100)* 1.34-30 824/f 2.19/f (180/f2)* 30-300 27.5 0.073 0.2 300-1500 f/1500 1500-100,000 1.0 MPE calculation formula 푺= 푷푷 ퟒퟒ푹 ퟐ Where: S = power density P = output power (W) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = Separation distance between radiator and human body (m) Test result Maximum peak output power at antenna input terminal(dBm): 21.38 Maximum peak output power at antenna input terminal(mW): 137.40 Prediction distance(cm): 20 Predication frequency(MHz): 2462 Antenna Gain (typical) (dBi): 2.0 Power density at predication frequency at 20 cm(mW/cm 2 ): 0.043 MPE limit for RF exposure at prediction frequency(mW/cm 2 ): 1.0 FCC Verdict: PASS

Report No.: BL-SZ14A0075-601 2 Revision History Version Issue Date Revisions Rev. 01 Dec 16, 2014 Initial Issue TABLE OF CONTENTS 1 ADMINISTRATIVE DATA (GENERAL INFORMATION) .......................................................................... 5 1.1 Identification of the Testing Laboratory .............................................................................................. 5 1.2 Identification of the Responsible Testing Location ............................................................................. 5 1.3 Announce ........................................................................................................................................... 5 2 PRODUCT INFORMATION ...................................................................................................................... 6 2.1 Applicant ............................................................................................................................................ 6 2.2 Manufacturer ...................................................................................................................................... 6 2.3 General Description for Equipment under Test (EUT) ....................................................................... 6 2.4 Technical Information ......................................................................................................................... 7 2.5 Ancillary Equipment ........................................................................................................................... 8 3 SUMMARY OF TEST RESULTS .............................................................................................................. 9 3.1 Test Standards ................................................................................................................................... 9 3.2 Verdict ................................................................................................................................................ 9 4 GENERAL TEST CONFIGURATIONS ................................................................................................... 10 4.1 Test Environments ........................................................................................................................... 10 4.2 Test Equipment List ......................................................................................................................... 10 4.3 Test Configurations .......................................................................................................................... 11 4.4 Description of Test Setup ................................................................................................................. 11 4.4.1 For Antenna Port Test ............................................................................................................... 11 4.4.2 For AC Power Supply Port Test ................................................................................................ 12 4.4.3 For Radiated Test (Below 30MHz) ............................................................................................ 12 4.4.4 For Radiated Test (30MHz-1GHz) ............................................................................................ 13 4.4.5 For Radiated Test (Above 1GHz) .............................................................................................. 13 4.5 Test Conditions ................................................................................................................................ 14 Report No.: BL-SZ14A0075-601 3 TEST ITEMS ........................................................................................................................................... 15 5.1 Antenna Requirements .................................................................................................................... 15 5.1.1 Standard Applicable .................................................................................................................. 15 5.1.2 Antenna Anti-Replacement Construction .................................................................................. 15 5.1.3 Antenna Gain ............................................................................................................................ 15 5.2 Output Power ................................................................................................................................... 16 5.2.1 Test Limit ................................................................................................................................... 16 5.2.2 Test Procedure .......................................................................................................................... 16 5.3 6dB Bandwidth ................................................................................................................................. 18 5.3.1 Limit ........................................................................................................................................... 18 5.3.2 Test Procedure .......................................................................................................................... 18 5.4 Conducted Spurious Emission ......................................................................................................... 19 5.4.1 Limit ........................................................................................................................................... 19 5.4.2 Test Procedure .......................................................................................................................... 19 5.5 Conducted Emission ........................................................................................................................ 21 5.5.1 Limit ........................................................................................................................................... 21 5.5.2 Test Procedure .…

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Report No.: BL-SZ14A0075-601 ANNEX B TEST SETUP PHOTOS B.1. Conducted Test Photo B.2. Conducted Emissions Test Photo Report No.: BL-SZ14A0075-601 B.3. Radiated Test Photo Below 30MHz 30MHz to 1GHz Report No.: BL-SZ14A0075-601 Above 1GHz