BY4DAS2002.4GHz Wireless Digital Audio Sender

2.4 GHz Wireless Digital Audio Sender 8CH Selectable, Auto-Scan Model:DAS-200 Introduction Internet Radio, on-line MP3 concert and internet audio programs are popular these days. In order to enjoy this kind of entertainment or program, user need to hook their computer to internet and listen the audio from multimedia speaker! If you want to listen to this kind of audio everywhere you need to take you notebook or PC to the place you want to go! DAS-200 can provide you a different experience of listening. With state of art RF and digital processing technology, and with 8 CH selectable bands, it can provide crystal clear audio to your audio amplifier. Feature
2.4GHz
8 CH selectable channels
Auto Scan channel ---Receiver
1 Tx to 1 Rx or 1 to many Rx
FEC coding
last channel recall Package of content Before your installation, please check the content of package
Transmitter(Tx) X1
Receiver(Rx) X1
AC/DC Adaptor X1
3.5 mm to 3.5 mm stereo audio cable X1
3.5 mm to RCA R L audio cable X1 1 Transmitter Receiver Audio cable Audio cable Adaptor Installation TX
Listen to the internet radio or MP3 files on Computer. DAS-200 Transmitter is used as a external speaker of your PC or Notebook, the audio from PC will transmit by 2.4GHz signal to Receiver. RX Connect 3.5mm to RCA RL audio cables, 3.5mm end to the audio output on the back panel of DAS-200 Rx, RCA RL to the audio input of your audio amplifier. Connect the barrel end of AC/DC adaptor to the DC input of the back panel of DAS-200, AC end to your AC outlet Operation Step 1. Please check the power is ok in either Tx( the blue-ray LED will lighted on when Plug into USB port )or Rx. Step 2.Push the button on the Tx (as figure 1) to select desired channel(the Receiver can auto scan the channel that Tx has) Step3. Turn on the audio amplifier at the Rx site to check the audio quality, if there is some interference occurred, the sound will has some zigzag and buzz. At this time, you need to choose another channel as Step2 to make sure that the audio quality is crystal clear. Step4: open your mind to enjoy. 2 figure 1 Audio Cable Receiver AC/DC Adaptor Stereo speaker Safety Indoor use only Clean with dry and soft cloth No serviceable part for customer Digital Audio Sender Specifications Model NO.Transmitter (R/L)Receiver DescriptionTransmitterReceiver Supply voltage 5VDC via USB portAC120V, 60Hz DC 9V,200mA Current consumption100 mA (Typical)130 mA (Typical) Operating temperatures -10 ~ +60 (degrees Celsius)-10 ~ +60 (degrees Celsius) Frequency range2400 ~ 2483.5 MHz2400 ~ 2483.5 MHz ModulationFSK (Modulation Index 0.5) Channel number88 Channel spacing9 MHz9 MHz Channel frequency2410, 2419 ~ 2473 MHz2410, 2419~ 2473 MHz Frequency stability±100 KHz±100 KHz TX Power+10 dBm for CE (Typical), +10 dBm for FCC (Typical) Input impedance>10K Ohm Input level4Vp-p (Max) RX Sensitivity-85 dBm (Min.) Adjacent channel rejection >45dB @ +/-5MHz offset the central frequency Image rejection>25dB @ the image frequency Output impedance< 1KOhm Output level3.4Vp-p (Max) Response 20 ~ 20 KHz, -2dB(Max) Dynamic range 45dB (Min) Separation 45dB (Min) SN ratio 45dB (Min) THD 0.6% (Min) 3 FCC INFORMATION The Federal Communication Commission Radio Frequency Interference Statement includes the following paragraph: The 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 instruction, may cause harmful interference to radio communication. However, there is no grantee that interference will not occur in a particular installation. If this equipment dose 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 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 changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. To comply with the FCC RF exposure compliance requirements, this device and its antenna must not be co-located or operating to conjunction with any other antenna or transmitter. 4

ETC Report No.: ET94S-01-031 Page A1 of A1 FCC ID. :BY4DAS200 ANNEX A: EXTERNAL CONSTRUCTION PHOTOS OF EUT 1. Outside view 1 of EUT 2. Outside view 2 of EUT

ID Label _ Location

ETC Report No.: ET94S-01-031 Page B1 of B3 FCC ID. :BY4DAS200 ANNEX B: INTERNAL CONSTRUCTION PHOTOS OF EUT 1. Inside View of EUT 2. antenna ETC Report No.: ET94S-01-031 Page B2 of B3 FCC ID. :BY4DAS200 3. Front view of PCB 4. Front view of PCB ETC Report No.: ET94S-01-031 Page B3 of B3 FCC ID. :BY4DAS200 5. Rear view of PCB

ETC Report No. : ET94S-01-031 Sheet 1 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 CONFORMANCE TEST REPORT FOR FCC 47 CFR, Part 15 Subpart C Report No.: ET94S-01-031 Client: TRANS ELECTRIC CO., LTD. Product: 2.4GHz Wireless Digital Audio Sender Model: DAS-200 FCC ID: BY4DAS200 Manufacturer/supplier: TRANS ELECTRIC CO., LTD. Date test item received: 2005/01/07 Date test campaign completed: 2005/01/17 Date of issue: 2005/10/07 The test result only corresponds to the tested sample. It is not permitted to copy this report, in part or in full, without the permission of the test laboratory. Total number of pages of this test report: 45 pages Total number of pages of photos: External photos 1 pages Internal photos 3 pages Setup photos 3 pages Test Engineer Checked By Approved By Jeng De Hsu Mark Joe Hsieh ELECTRONICS TESTING CENTER, TAIWAN NO.8, LANE 29, WENMING RD., LESHAN TSUEN, GUISHAN SHIANG, TAOYUAN COUNTY, TAIWAN 33383, R.O.C. TEL: (03) 3276170~4 INT: +886-3-3276170~4 FAX: (03) 3276188 INT: +886-3-3276188 ETC Report No. : ET94S-01-031 Sheet 2 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 Client : TRANS ELECTRIC CO., LTD. Address : 765, Sec.2, Chungsan Rd., Huatang, Changhua, Taiwan, R.O.C. Manufacturer : TRANS ELECTRIC CO., LTD. Address : 765, Sec.2, Chungsan Rd., Huatang, Changhua, Taiwan, R.O.C. EUT : 2.4GHz Wireless Digital Audio Sender Trade name : PX Model No. : DAS-200 Power Source : DC 5V Regulations applied : FCC 47 CFR, Part 15 Subpart C (2005) The testing described in this report has been carried out to the best of our knowledge and ability, and our responsibility is limited to the exercise of reasonable care. This certification is not intended to believe the sellers from their legal and/or contractual obligations. The compliance test is only certified for the test equipment and the results of the testing report relate only to the item tested. The compliance test of this report was conducted in accordance with the appropriate standards. It’s not intention to assure the quality and performance of the product. This report shall not be reproduced except in full, without the approval of ETC. This report must not be used by the client to claim product endorsement by NVLAP or any agency of the U.S. Government. Laboratory Introduction: Electronics Testing Center, Taiwan is recognized, filed and mutual recognition arrangement as following: 1 ISO9001: TüV Product Service 2 ISO/IEC 17025: BSMI, CNLA, DGT, NVLAP, CCIBLAC, UL, Compliance 3 Filing: FCC, Industry Canada, VCCI 4 MRA: Australia, Hong Kong, New Zealand, Singapore, USA, Japan, Korea, China, APLAC through CNLA 5 FCC Registration Number: 90588, 91094, 91095 NVLAP Lab Code 200133-0 ETC Report No. : ET94S-01-031 Sheet 3 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 Table of Contents Page 1 GENERAL INFORMATION ................................................................................................................ 5 1.1 Product Description................................................................................................................................5 1.2 Characteristics of Device .......................................................................................................................5 1.3 Test Methodology..................................................................................................................................5 1.4 Test Facility............................................................................................................................................5 2 PROVISIONS APPLICABLE............................................................................................................... 6 2.1 Definition...............................................................................................................................................6 2.2 Requirement for Compliance.................................................................................................................7 2.3 Restricted Bands of Operation...............................................................................................................9 2.4 Labeling Requirement............................................................................................................................9 2.5 User Information..................................................................................................................................10 3. SYSTEM TEST CONFIGURATION ................................................................................................. 11 3.1 Devices for Tested System...................................................................................................................11 4 CONDUCTED EMISSION MEASUREMENT................................................................................. 12 4.1 Standard Applicable.............................................................................................................................12 4.2 Measurement Procedure.......................................................................................................................12 4.3 Conducted Emission Data....................................................................................................................13 4.4 Result Data Calculation........................................................................................................................16 4.5 Conducted Measurement Equipment...................................................................................................16 5 ANTENNA REQUIREMENT ............................................................................................................. 17 5.1 Standard Applicable.............................................................................................................................17 5.2 Antenna Construction and Directional Gain........................................................................................17 6 EMISSION BANDWIDTH MEA…

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ETC Report No. : ET94S-01-031 Sheet 28 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 8 POWER DENSITY MEASUREMENT 8.1 Standard Applicable According to 15.247(d), for direct sequence systems, the transmitted power density averaged over any 1 second interval shall not be greater than 8 dBm in any 3 kHz bandwidth within these bands. 8.2 Measurement Procedure 1. Check the calibration of the measuring instrument using either an internal calibrator or a known signal from an external generator. 2. Position the EUT as shown in figure 2. Turn on the EUT and connect its antenna terminal to measurement instrument via a low loss cable. Then set EUT to any one measured frequency within its operating range and make sure the instrument is operated in its linear range. 3. Adjust the center frequency of spectrum analyzer on highest level appearing on spectral display within a 300 kHz frequency span. 4. Set the spectrum analyzer on a 3 kHz resolution bandwidth and 10 kHz video bandwidth as well as max. hold function, then record the measurement result. 5. Repeat above procedures until all measured frequencies were complete. 8.3 Measurement Equipment Equipment Manufacturer Model No. Next Cal. Due Spectrum Analyzer Hewlett-Packard 8564EC 09/16/2006 ETC Report No. : ET94S-01-031 Sheet 29 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 8.4 Measurement Data Test Date: Jan. 17, 2005 Temperature: 16 °C Humidity: 70 % Channel Frequency (MHz) Reading (dBm) Cable Loss (dB) Peak Power Spectral Density (dBm) FCC Limit (dBm) Chart 1 2410 -9.330 1.0 -8.330 8 Page 30 5 2446 -9.330 1.0 -8.330 8 Page 31 8 2473 -7.660 1.0 -6.660 8 Page 32 Note: 1. Please refer to page 30 to page 32 for chart 2. The estimated measurement uncertainty of the result measurement is ±1.5dB(1GHz ≦ f ≦ 18GHz) ETC Report No. : ET94S-01-031 Sheet 30 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 31 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 32 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 33 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 9 SPURIOUS EMISSION - RF CONDUCTED MEASUREMENT 9.1 Standard Applicable According to 12.247 (c) , in any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement. Attenuation below the general limits specified in Section 15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in Section 15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a) (see Section 15.205(c)). 9.2 Measurement Procedure 1. Check the calibration of the measuring instrument using either an internal calibrator or a known signal from an external generator. 2. Position the EUT as shown in figure 2. Turn on the EUT and connect its antenna terminal to measurement instrument via a low loss cable. Then set it to any one measured frequency within its operating range and make sure the instrument is operated in its linear range. 3. Set both RBW and VBW of spectrum analyzer to 100 kHz with a convenient frequency span including 100kHz bandwidth from band edge. 4. Measure the highest amplitude appearing on spectral display and set it as a reference level. Plot the graph with marking the highest point and edge frequency. 5. Repeat above procedures until all measured frequencies were complete. 9.3 Measurement Equipment Equipment Manufacturer Model No. Next Cal. Due Spectrum Analyzer Hewlett-Packard 8564EC 09/16/2006 ETC Report No. : ET94S-01-031 Sheet 34 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 9.4 Measurement Data Test Date: Jan. 17, 2005 Temperature: 16 °C Humidity: 70 % Channel Frequency(MHz) Chart 1 2410 Page 35, Page 37 5 2446 Page 38 8 2473 Page 36, Page 39 All out-of –band conducted emissions were more than 20dB below the carrier. Note: Please refer to page 35 to page 39 for chart ETC Report No. : ET94S-01-031 Sheet 35 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 36 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 37 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 38 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 39 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 ETC Report No. : ET94S-01-031 Sheet 40 of 45 Sheets FCC ID. :BY4DAS200 Rev. No 1.0 10 RADIATED EMISSION MEASUREMENT 10.1 Standard Applicable For unintentional radiator, the radiated emission shall comply with § 15.109(a). For intentional radiators, according to § 15.247 (a), operation under this provision is limited to frequency hopping and direct sequence spread spectrum, and the out band emission shall be comply with § 15.247 (c) 10.2 Measurement Procedure A.Preliminary Measurement For Portable Devices. For portable devices, the following procedure was performed to determine the maximum emission axis of EUT (X,Y and Z axis): 1. With the receiving antenna is H polarization, rotate the EUT in turns with three orthogonal axes to determine the axis of maximum emission. 2. With the receiving antennna is V polarization, rotate the EUT in turns with three orthogonal axes to determine the axis of maximum emission. 3. Compare the results derived from above two steps. The axis of maximum emission from EUT was determined and the configuration was used to perform the final measurement. 4. The position in which the maximum noise occurred was “Y axis”. (Please see the test setup photos) B. Final Measurement 1. Setup the configuration per figure 4 and 5 for frequencies measured below and above 1 GHz respectively. 2. For emission frequencies measured below 1 GHz, it is performe…

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ETC Report No. : ET94S-01-031 Sheet 1 of 3 Sheets FCC ID. :BY4DAS200 Photos of Radiation Measuring Setup x-axis ETC Report No. : ET94S-01-031 Sheet 2 of 3 Sheets FCC ID. :BY4DAS200 y-axis z-axis ETC Report No. : ET94S-01-031 Sheet 3 of 3 Sheets FCC ID. :BY4DAS200 Photos of Conduction Measuring Setup