XJ6T2HF2.4GHz RADIO SYSTEM

LED Indicator SAIL TRIM SAIL STICK Power down mode ( PDM ) BUTTON ANTENNA RUDDER STICK RUDDER TRIM SERVO REVERSE SWITCHES MERMAID MERMAID Instruction Manual 2CH 2.4GHz RADIO SYSTEM INSTRUCTION (T2HF) LED INDICATOR LIGHTS Two LEDs display to indicate the battery voltage level, power down mode and ID set up function. SERVO REVERSE SWITCHES Servo reverse switches reverse the direction of the operation of the servos. The lower position is normal and upper position is reverse. CHANNELS: CH1: Rudder CH2: Sail REAR PANNEL The transmitter needs 8 AA batteries (sold separately). To open the battery compartment slide the cover down while pressing the part marked: PUSH MERMAID MERMAID Instruction Manual 2 CONNECTIONS Connection example is shown below. Connection Example 2.4GHz systems have different characteristics than that of the conventional frequencies therefore ,please read the section carefully to enjoy safe sailing with the 2.4GHz systems. 2.4GHZ FHSS RADIO SYSTEM SETUP LED Receiver R601SF Receiver Switch * Insert four batteries. Receiver battery holder Rudder Servo (CH1) Sail Servo (CH2) MERMAID MERMAID Instruction Manual 3 TRANSMITTER ANTENNA 1. The transmitter antenna is adjustable so please make sure that the antenna is never pointed directly at the boat when sailing as this creates a week signal for the receiver. 2. Keep the antenna perpendicular to the transmitter's face to create a better RF condition for the receiver. Of course this depends on how you hold the transmitter, but in most cases, adjusting the transmitter antenna so that it is perpendicular to the face will give the best results. Please adjust transmitter antenna to the way you hold the transmitter. PAIR PROCEDURE The transmitter has an individual ID that is assigned to it in the factory. In order to start operation, the receiver must be linked with the Id code of the transmitter with which it is being paired. Once the link is made, the ID code is stored in the receiver and no further linking is necessary unless he receiver is to be used with another transmitter. If you purchase another MERITRC receiver this procedure is necessary, otherwise the receiver will not work. The receiver contains precision electronic parts. It is the most delicate radio component on-board the boat and should be protected from vibration, shock and temperature extremes .To protect the receiver, wrap it in R/Cfoam rubber or other vibration-absorbing material. If appropriate, waterproof the receiver by placing it in a plastic bag and closing the open band with a rubber before wrapping it in foam .If moisture enters the receiver, intermittent operation or a failure may result. RECEIVER ANTENNA INSTALLATION The receiver has one antenna. Lay & tape the antenna on the hatch seal as shown . 1. The antenna must be kept away from conductive material ,such as material and carbon by at least half an inch. The coaxial part of the antenna does not need to follow these guidelines ,but don't bend it in a small radius. 2. Keep the antenna away from any noise sources as much as possible. 3. Cover the hatch cover with rubber band. This photo demonstrates how the antennas should be placed .For actual installation the receiver must be wrapped in anti-vibration foam to protect it from vibration damage. MERMAID MERMAID Instruction Manual 4 Please refer to the table below for the LED status indicating the receiver condition. Receiving signals an ID is matched: ON Receiving signals, but ID is not matched: Off No signal reception: Off Receiver ID memory is empty: Blink slowly. To keep the receiver and transmitter pairing memory, turn off the transmitter after above procedures. then turn on again. Now, the transmitter and receiver can talk to each other smoothly. 1. Place the transmitter and receiver close to each other (with 1 meter). 2. Turn on the transmitter then the receiver. If they are not paired, the read LED on the receiver will blink slowly or be off, follow the next steps to link and pair the receiver and the transmitter. 3. Press the transmitter “PDM” switch, the two LEDs blink alternately, then releaset the switch. Turn on the receiver power, then press down the receiver “pair button” switch for more than two seconds, once paired the receiver LED will start to blink quickly, it shows they are pared, release the switch. 4. Press the transmitter “PDM” button again, when the linkage is complete, the receiver LED will change to solid read and receiver will start to respond to the transmitter after 2 seconds. MERMAID MERMAID Instruction Manual 5 This equipment has been tested. And it 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 and uses and radiates radio frequency energy and, if not installed and used in accordance with the instruction, 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. Warning: A shielded-type power cord is required in order to meet FCC emission limits and also to prevent interference to the nearby radio and television reception. It is essential that only the supplied power cord be used. 1. 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 interf…

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Correspondence Summary September 21, 2010 SUBJECT: SHANGHAI MERIT TECHNOLOGY CORP. - FCC ID: XJ6T2HF TCB question: 1. c. Part 15.247(a)(1): Please describe whether the system hops to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Applicant’s Answer 1. c.: ID code, address code 1byte)+ID (2 bytes） Frequency Hopping mode calculates 0 and F no need by address code,so the total are 254 modes from 1-254. ID code address code （1byte) ID (2 bytes） 01 00000001 0000000000000000 02 00000002 0000000000000001 03 00000003 0000000000000002 03 00000004 0000000000000003 04 00000005 0000000000000004 05 00000006 0000000000000005 06 00000007 0000000000000006 07 00000008 0000000000000007 08 00000009 0000000000000008 09 0000000A 0000000000000009 10 0000000B 000000000000000A 11 0000000C 000000000000000B 12 0000000D 000000000000000C 13 0000000E 000000000000000D 14 0000000F 000000000000000E 16 0000001F 000000000000000F ....... .......... ............... Above data is a cycle . TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 [email protected]

FCC Label Location

CIRCUIT DESCRIPTION: 1. 2.4 GHz transmitted frequency is produced by 26 MHz crystal Oscillator and frequency double with lock-in technique. 2. TX (Transmitter) is consisting of 2.4G-01T-IC2 and 2.4G-03R-IC1, RX (Receiver) is consist of 2.4G-03R-IC2 and 2.4G-03R-IC1. 3. Data packets are emitted every 20ms,frequency also changed accordingly. Each frame data includes 16bits preamble bits, 16bits sync word, 8bits Length, 8bits Address, 8×8 bits data and 16bits CRC. Frequency hopping principle：On basis of 8bits address code to make up RS encoding pseudo-random numbers, transpose among 67 channel at an interval of 1M channel space within each consecutive frequency point. The 1 st , 26 th , 51 st frequency points are the simultaneous channel of TX and RX. TX (Transmitter) emits data a time each 200ms at one of frequency point among 1 st , 26 th , 51 st the three frequency points. 4. If signal is interrupted on route, RX (receiver) will cyclically search TX signal at the three appointed frequency points. 5. After pair encoding TX and RX, The bind system will store the address code in memory. The TX and RX will cooperate successfully when turn on power to transmitter next time. 6. Data packets of transmitter emit every 20ms. The TX is connected to a unique frequency hopping sequence, which is assigned at manufacturing. RX receives and stores the frequency hopping sequence of the desired transmitter at initial state. The associated receiver receive control packet from the transmitter and only connect to this transmitter. User can clear this stored frequency hopping sequence by pressing the button on the receiver. The receiver will then connect to the first available transmitter it hears, and store the transmitter’s unique frequency hopping sequence in non-volatile memory. A transmitter is only available fore new connection for several seconds after the button pressed in order to reduce the possibility of connecting to another, undesired transmitter operating in the same area. This process is termed binding. 7. Once bound, the receiver will scan for the saved transmitter frequency hopping sequence when it is powered up, or any time no packets have been received for an extended period of time. As the link is strictly one-way, the transmitter always behaves in the same fashion, sending control data per 20ms with link-establishment information included on a subset of the channels. For the several seconds of binding operation the link establishment data indicates that an unbound may connect.

1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:8-Sep-2010 Sheet of File:C:\Documents and Settings\Administrator\桌面\2.4G-01T.SCH.ddbDrawn By: 拟制: 2.4G-01型发射模块电原理图 R5 100k R11 10k R2 100k L3 1.6nH L7 5.6nH SPC-2.4G-01T.SCH R16 10k R14 510Ω R4 100k ANT C39 1.5P C24 0.1μ C29 3.9P C28 1.5P C27 0.1μ C32 1.2P C36 0.1μ L5 1.6nH R9 10k C26 10P R12 10k C42 10μ Z1 ZTACG4.00MD C43 100μ PA2423L AS179 IC2 EM78P418N IC4 AS179 IC3 C23 5P Q1 2SC4177-L5 R3 100k C25 10P R8 10Ω C17 100P C21 10P R13 10k C22 5.6P R15 510Ω C18 1P C20 1P R6 10k C19 100P L1 1.6nH L8 100μH L2 1.6nH L41.6nH C35 0.1μ C33 0.1μ C8 0.1μ C12 30P C9 0.01μ C34 10P R10 10k R1 56k C44 0.1μ C3 0.1μ C11 39P C13 30P C41 0.1μ C7 0.1μ C10 39P C6 0.1μ CR1 SMD5×3.2 -26MHz IC1 CC2500A C4 0.1μ DC12V C1 0.1μ C2 0.1μ C5 0.1μ C30 0.1μ C31 10P S1 脉冲入 IC5 IC7 UMX1N IC6CJU1117-3.3 C37 10P C38 0.1μ C45 0.1μ L6 1.6nH C14 1000P C40 4.7μ R7 10Ω C16 10μ C15 10μ 95M162G 0919 Texas Instruments

Report No.: A001P100714003E Shenzhen AOV Testing Technology Co., Ltd. Page 1 of 34 FCC TEST REPORT For SHANGHAI MERIT TECHNOLOGY CORP. 2.4GHz radio system Trade Name : MERITRC Model No. : T2HF FCC ID : XJ6T2HF Frequency range : 2406-2475MHz Number of Channel : 67CH Type of antenna : Internal monopole Antenna, Type of Modulation : FHSS Applicant : SHANGHAI MERIT TECHNOLOGY CORP. 1058 TAOGAN ROAD, SHESHAN TOWN, SONGJIANG, SHANGHAI, CHINA 201602 Regulation : FCC Part 15.247 Subpart C Prepared by : Shenzhen AOV Testing Technology Co., Ltd. 2-6/F, No.5, Yuantou Lane, Tanglang, Taoyuan Street, Nanshan District, Shenzhen, Guangdong, China Test Date : July 20-21, 2010 Date of Report : July 22, 2010 Report No.: A001P100714003E Shenzhen AOV Testing Technology Co., Ltd. Page 2 of 34 TABLE OF CONTENT Description Page Test Report Declaration 1. TEST PROCEDURES AND RESULTS..............................................................................4 2. GENERAL INFORMATION..................................................................................................7 1.1. General Information.........................................................................................................................7 1.2. Test Facility.......................................................................................................................................7 1.3.Test Instrument Used.......................................................................................................................8 3. MAXIMUM PEAK OUTPUT POWER.................................................................................9 3.1. Rules Part No..............................................................................................................................9 3.2. Method: 15.247(c)....................................................................................................................9 3.3. Limits............................................................................................................................................9 3.4. Test Result...................................................................................................................................9 4. NUMBER OF HOPPING FREQUENCY...........................................................................12 4.1. Test Standard............................................................................................................................12 4.2. Test Result.................................................................................................................................12 5. BAND EDGE.........................................................................................................................14 5.1. Rules Part No............................................................................................................................14 5.2. Limits..........................................................................................................................................15 5.3. Test Procedure..........................................................................................................................15 5.4. Test Result.................................................................................................................................15 6. 20DB BANDWIDTH.............................................................................................................18 6.1. Rules Part No............................................................................................................................18 6.2. Limits..........................................................................................................................................18 6.3. Test Result.................................................................................................................................18 7. DWELL TIME........................................................................................................................22 7.1. Rules Part No............................................................................................................................22 7.2. Limits..........................................................................................................................................22 7.3. Test Result.................................................................................................................................22 8. RADIATED EMISSION........................................................................................................26 8.1. Rules Part No............................................................................................................................26 8.2. Limits..........................................................................................................................................26 8.3. Test Procedure..........................................................................................................................26 8.4. Test setup..................................................................................................................................27 8.5. Test Result.................................................................................................................................28 9. RESTRICTED BANDS OF OPERATION........................................................................31 10. RF EXPOSURE COMPLIANCE REQUIREMENT......................................................32 11. ANTENNA REQUIREMENT...........................................................................................33 12. PHOTOGRAPH OF TEST..............................................................................................34 Report No.: A001P100714003E Shenzhen AOV Testing Technology Co., Ltd. Page 3 of 34 TEST REPORT DECLARATION Applicant : SHANGHAI MERIT TECHNOLOGY CORP. Manufacturer : SHANGHAI MERIT TECHNOLOGY CORP. …

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Below 1G Above 1G