OBNLWM-A0001Wireless Microphone

VHF Wireless Microphone System User s Manual' VF-289 Guangzhou Aoyuan Electronics Factory Introduction: , ,For many reasons low frequency among others traditional wireless microphone systems can be easily interfered especially by such equipment, as CD VCD and LD T, .o solve this problem T, akstar designed the professional TS WM series wireless microphones which adopt a series of,, measures to improve its functions advance frequency using multilevel high, frequency and mid frequency narrowband filter mulriple noise detect and, control They feature also the special functions of avoiding interference from. the outside. -VF 289 wireless microphone is suitable for any public speeches and karaoke performances. It features long distance 50 100m),high fidelity( - tone quality and wide frequency response range 40 18000Hz with low( - ) distortions which will assure you a pleasant using everywhere at any, moment. - -1 Features: Adopting VHF H frequency band for obviating interference- .Frequency Using multilevel high frequency and mid frequency narrowband Filter for fully eliminating signal disturbing Low voltage power supply design keeps it working even at 4V-. Unique ALC circuitry for avoiding distortion from high volume Low voltage indication available for handheld microphone Special circuitry for eliminating noise shock wave from switch Quartz crystal oscillator circuitry for extremely stable frequency Adopting audio companding technique for reducing the noise and Increasing the dynamic range Function of effectively reducing the howling Independent unbalanced and mixed outputs for conveniently connecting sound mixer and Karaoke amplifier Rugged and durable handheld microphone design - -2 Operational Instructions: Microphone: 1Handheld Microphone Rotate the battery cover anti clockwise and put. : - , a 9V battery into the battery compartment with proper polarities, then rotate the battery cover clockwise till it is tight enough. Belt-pack Transmitter: Open the battery cover by pressing the OPEN sign,then put in the batteries. Caution the battery must be in( : Correct Polarities Push the microphone power switch to the ON position. If the power indicator doesn't light, please check if the battery is full enough or the battery polarities are correct. 3.If the mute function is needed, please push the switch to the middle position, then the microphone will be in mute state and the unit is still working. 4.Plug the tie-clip or headset microphone into the MIC socket of the belt pack transmitter. 5.When not using the microphone for a long time, please take out the batteries from the microphone base in order to avoid damaging the unit By chemical leakage from the battery. 2. AL C AUDIO AMP DCNR PRE- EMPHASIS BATT VOL STABILIZING CIRC HIF PWR AMP QUARTZ CRYSTAL OSC FM MODE Working Principle of Microphone: - -3 - -4 The System ncludes a Receiver Part:I 1Plug the connector of the power adaptor into the socket of power. Source, please make sure the power voltage is AC 120V/50~60Hz. 2.Turn on the power switch the power indicator lights , . 3.Pull out the antenna A&B and make them perpendicular to the unit. 4.2-Audio Output Connection auto selecting):If the mix output is needed( -, only use 1 audio output cable and connect it with any output socket.If independent output is required please connect another cable, . 5.TheRFindicator of receiver will light when turning on the transmitter. Please swivel the volume knob to adjust the sound. 6.When not using the receiver for a long time please disconnect it from the, power adaptor. POWER VOL STABLEZING CIRC QUARTZ CRYSTAL OSC SAME CIRC ANT HF FILHF AMP ULTRA HETERODYNE RECEPTION AUDIO AMP DE EMPHASIS- MUTE DYNAMIC EXP CIRC AUTO SELECTING- OUTPUT AUX OUT HIGH PIL DETECT CIRC FOR MUTE INDICATOR Working Principle of Receiver: - -5 CAUTION of the Receiver: 1 The receiver should be more than 1m above the floor and more than. 1m away from the walls. 2.For better effect please do not put the microphone in the dead angle, place while using. 3.Please be careful while operating the system any impacts plumps or, , misuse can cause malfunction. 4.Do not expose the system directly to sun and rain and keep it away from, magnetic filed. 5.Any change or modification on the construction of this device which are, not expressly approved by the party responsible for compliance could, cause a malfunction and void the user s authority to operate the' equipment. 6.Do not disassemble the unit by yourself,as there may be high voltage inside . 7 Specifications are subject to change without prior notice.. - -6 Troubleshooting: Phenomena Cause T h e r e c e i v e r i s returned on, but the indicator does not light. Check if the adaptor is well connected, and if the socket is broken. TheRFindicator lights while speaking, but no output signal is available. Check if the power switch is in the middle position, or the volume control is on the minimum position. W h e n t h e u s i n g distance gets shorter, the signal becomes unstable. 1 Put out the antenna. . 2 Check if the batteries are running off and. replace them with the fresh ones if needed. 3 Check if the receiver is put in inappropriate. position, i e. on the ground or at the corner of. the wall or in a strong electromagnetic filed, please change its position. Remarks:If there are any other troubles or problems observed, please do not open and repair it by yourselves. Please, first contact our distributors or directly come back to us. We will try our best to provide you with professional and efficient service. Sound quality gets worse. 1 The battery of the microphone is running off., please replace it with fresh one. 2 Check if there is same frequency signal. problem do not use two units with same, frequency at the same time in the same area. (The distance must be at least 100m between two units with same frequency.) Specification: Mute Control Noise Lock: Frequency Deviation:18kHz Frequency Response 80Hz 15kHz: - Frequency Stability:0 005. …

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VF-289

FCC ID Label Sample FCC ID : OBNLWM-A0001 This device complies with part 74 of the FCC Rules

LABEL LOCATION OF VF-289

FCCID: OBNLWM-A0001 Report Number: HST201205-1230-FCC Page 1 of 22 Test Report Applicant: Guangzhou Aoyuan Electronics Factory Address of Applicant: 3 Floor 5 Building in the Quondam Food Industry Park, No. 135 Commercial Avenue, Xinhua Town, Huadu District, Guangzhou City, Guangdong Province, China Equipment Under Test (EUT): EUT Name: Wireless Microphone Model No.: VF-289 Trade Mark: N/A Serial No.: Not supplied by client Standards: FCC PART 74H:2010 Date of Receipt: May 16, 2012 Date of Test: May 16 to Jun. 3, 2012 Date of Issue: Jun. 6, 2012 Test Result : PASS* z In the configuration tested, the EUT complied with the standards specified above. Authorized Signature: Henly Xie / Manager This report refers to the General Conditions for Inspection and Testing Services, printed overleaf This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. This report may only be reproduced and distributed in full. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. All test results in this report can be traceable to National or International Standards. The test report prepare by: Guangzhou Huesent Testing Service Co., Ltd. No.91, Dongguanzhuang Road, Tianhe District, Guangzhou, China. Tel: 86-20-28263298 Fax: 86-20-28263237 http://www.hst.org.cn E-mail: [email protected] REPORT No: HST201205-1230-FCC Page 2 of 22 Contents 1 TEST SUMMARY ............................................................................................... 3 2 GENERAL INFORMATION ................................................................................. 4 2.1 Client Information.........................................................................................................4 2.2 General Description of E.U.T. ...................................................................................... 4 2.3 Details of E.U.T. ...........................................................................................................4 2.4 Description of Support Units ........................................................................................ 4 2.5 Standards Applicable for Testing.................................................................................. 4 2.6 Test Location................................................................................................................ 5 2.7 Deviation from Standards ............................................................................................ 5 2.8 Abnormalities from Standard Conditions...................................................................... 5 3 EQUIPMENTS USED DURING TEST ................................................................ 6 4 TEST RESULTS ................................................................................................. 7 4.1 E.U.T. Operation Condition .......................................................................................... 7 4.2 Test Procedure & Measurement Data .......................................................................... 8 4.2.1 Carrier Radiated Power & Radiated Spurious Emissions ............................... 8 4.2.2 Occupied Bandwidth ..................................................................................... 12 4.2.3 Frequency Stability ....................................................................................... 15 4.2.4 Modulation Characteristics............................................................................ 17 4.2.5 EUT Constructional Details ........................................................................... 20 4.2.6 Antenna Photo .............................................................................................. 22 REPORT No: HST201205-1230-FCC Page 3 of 22 1 Test Summary Test Test Requirement Standard Paragraph Result Carrier Radiated Power FCC Part 2.1046 74.861 e) 1) 54–72, 76–88 & 174–216 MHz bands, 50 mW 470–608 and 614–806 MHz bands, 250 mW PASS Modulation Deviation FCC Part 2.1047 74.861 e) 3) Within 75kHz PASS Frequency Stability FCC Part 2.1055 74.861 e) 4) <0.005% 50 ppm PASS Operating Bandwidth FCC Part 2.1049 c) 74.861 e) 5) Within 200kHz PASS Unwanted Radiation FCC Part 2.1049 c) 74.861 e) 6) within the mask PASS Radiated Spurious Emission FCC Part 2.1053 74.861 d) 3) < 43+10lgP(W) dB PASS Remark: ♣The EUT has one channel, which is located in the range 174.200 MHz to 215.800MHz . Only test result of sample of Wireless Microphone in channels 174.2 MHz, 189.5 MHz and 215.8 MHz were recorded in this report. REPORT No: HST201205-1230-FCC Page 4 of 22 2 General Information 2.1 Client Information Applicant: Guangzhou Aoyuan Electronics Factory Address of Applicant: 3 Floor 5 Building in the Quondam Food Industry Park, No. 135 Commercial Avenue, Xinhua Town, Huadu District, Guangzhou City, Guangdong Province, China 2.2 General Description of E.U.T. EUT Name: Wireless Microphone Item No.: VF-289 Serial No.: Not supplied by client 2.3 Details of E.U.T. Power Supply: 9.0Vdc Battery ( 6F22 battery ) Main Function: Wireless microphone system with an associated receiver for transmitting voice. The final amplifier Collector Voltage and Collector Current are 0.3V & 3.5mA respectively. Necessary Bandwidth: 2M+2DK= 2 x 80 kHz + 2 x 20kHz x 1.0 = 200 kHz 16 channels for each microphone; Modulation: F3E; Antenna Type: Fixed; Gained: 2.0 dBi 2.4 Description of Support Units Connect the EUT to mains power, and then test the EUT with signal generator. 2.5 Standards Applicable for Testing The st…

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