HBW1591Remote Control Transmitter

Chamberlain Group LLC, The

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Application Details

Equipment Class: DSC - Part 15 Security/Remote Control Transmitter
Date of Grant: Sep 19, 2001
Application Purpose: Original Equipment
Date of Application: Sep 19, 2001
Equipment Note: Remote Control Transmitter
Frequency Range: 315.00000000 - 315.00000000
Company: Chamberlain Group LLC, The
Country: United States

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Block Diagram

6.8pf 5.6pf REFDESPART NUMBERDESCRIPTIONVALUEQTY C1,C930D71020100CAPACITOR, SMD0805100PF2 C230D6560001CAPACITOR, SMD12065.6PF1 C330D71500000CAPACITOR, SMD08051.5PF1 C430D76800000CAPACITOR, SMD08056.8PF1 C5,C6,C7,C830D710422R0CAPACITOR, SMD08050.014 C1030D710522R0CAPACITOR, SMD08050.11 D1,D2,D352B0074DIODE, LED T13 D4,D652B0065DIODE, SMD SIGNAL2 D552B0066DIODE, SMD ZENER6.2V1 D7,D8,D952B0070DIODE, SMD DUAL COMMON CATHODE3 E1,E2203C0197TERMINAL, 12V BATTERY2 L140B0051-1INDUCTOR, VARIABLE1 L2,L340A0059INDUCTOR, AIRWOUND30NH2 Q1207C0074TRANSISTOR, SMD NPN RF1 Q2,Q3,Q6207C0073TRANSISTOR, SMD NPN SWITCH3 Q4,Q5207C0069TRANSISTOR, SMD PNP SWITCH2 R1311C1525RESISTOR, SMD0805 5%1.5K1 R2,R3,R5,R7,311C1535RESISTOR, SMD0805 5%15K5 R8 R4,R14,R31311C1025RESISTOR, SMD0805 5%1K3 R6,R9,R15311C1045RESISTOR, SMD0805 5%100K3 R10,R11311C2035RESISTOR, SMD0805 5%20K2 R12,R13,R21,311C1035RESISTOR, SMD0805 5%10K7 R22,R23,R24, R25 R16,R17,R26,311C4735RESISTOR, SMD0805 5%47K7 R27,R28,R29, R30 R18,R19,R20311C4725RESISTOR, SMD0805 5%4.7K3 R32311C1055RESISTOR, SMD0805 5%1M1 U1125C0157I.C., ROLLCODE KEYLESS ENTRY1 U2NOT USED1 X133B0039RESONATOR, CERAMIC4MHZ1 114D0459BOARD, PC1 NOTES: 1. ALL LEADED COMPONENTS TO BE INSERTED TO WITHIN 0.020" OF BODY OR PREFORM LIMITS. 2. TEST SPEC.: 190A0439 3. PRECAUTIONS MUST BE TAKEN TO PREVENT FINGER OIL OR OTHER FILMS FROM BEING DEPOSITED ON THE CARBON ELECTRODES DURING HANDLING AND ASSEMBLY. 4. ALL TABS REMOVED DURING DEPANELING TO BE CUT FLUSH TO EDGE OF PCB, BUT NO MORE THAN 0.005" INTO BOARD. ALL SHARP CORNERS MADE BY DEPANELING TOOL MAY HAVE A MAXIMUM OF 0.010" RADIUS.

Operational Description

845 Larch Ave. Elmhurst, IL 60126 phone 630.993.6306 fax 630.530.6140 email: [email protected] September 12, 2001 Federal Communications Commission EQUIPMENT APPROVAL SERVICES PO Box 358315 Pittsburgh, PA 15251-5315 Re: Request for Certification Enclosed is an application form and exhibits for Certification of a Remote Control Transmitter Model 1A5539. The final instruction sheet is not available at this time, so I have included a typical instruction sheet indicating the FCC statement and important information. Model 67-315LM is identical to Model 1A5539. The FCC ID of this model, upon certification, will be HBW1591. We would appreciate your prompt attention to the submittal. Sincerely, THE CHAMBERLAIN GROUP, INC. Barbara P. Kelkhoff Manager of Regulatory Affairs LIST OF EXHIBITS REMOTE TOUCHCODE TRANSMITTER MODEL 1A5539 1. Expository Statement 2. Theory of Operation 3. Schematic 4. Photographs 5. FCC Label Drawing 6. Operating Instructions 7. Test Report EXPOSITORY STATEMENT REMOTE TOUCHCODE TRANSMITTER MODEL 1A5539 1. Since the final instruction sheet is not available at this time, a marked-up typical version has been included. The instructions include statements required to assure compliance with the Commission's Rules; Part 15. 2. Labeling is in accordance with the Commission's labeling requirements, Parts 2 and 15, Section 15.19. 3. This transmitter is intended for use with the certified receivers of our manufacture only. 4. The transmitter is equipped with an automatically releasing push-button switch. Transmission is terminated upon release of the push-button. 5. The 1A5539 is factory set to 315 ± 0.1% MHz. It is not intended to be readjusted in the field, and specific instructions prohibiting tampering are provided to the user. 6. Test data for the Model 1A5539 is part of this submission. No emissions were detected in the forbidden bands below 1.0 GHz. Certified by: Barbara P. Kelkhoff Manager, Product Safety THEORY OF OPERATION AND CIRCUIT DESCRIPTION MODEL 1A5539 (67-315LM) REMOTE TOUCHCODE TRANSMITTER (Please refer to enclosed schematic drawing: 195D1591) The model 67-315LM transmitter uses a 4-digit number entered on a numeric keypad to determine the code that will be transmitted. The sequence of operation is to press 4 digits on the keypad, then press and hold the “ENTER” button (within 10 seconds of entering the last digit of the code) to operate the desired receiving device (usually a garage door opener). RF transmission begins when the “ENTER” button is pressed and continues until the button is released or 52 seconds elapses, whichever comes first. The transmitter consists of a low power RF oscillator (Q1 and related parts), a digital encoder (U1 and related parts), a voltage regulator (Q3 and related parts), and a keypad having buttons labeled “0” through “9” and “ENTER”. Operation is initiated by pressing any one of the buttons on the keypad. This turns on transistor Q4 through diodes D7, D8 or D9, which supplies current to zener diode D5. The voltage developed across D5 provides bias to the voltage regulator circuitry of Q3. The regulator applies 5V to the VCC input of U1, which causes the microprocessor to begin operation by turning on Q6, which acts to keep the voltage regulator on when the button is released. After 4 numeric buttons have been pressed, activation of the “ENTER” button will cause a digital PWM signal to appear at pin 17 of U1. This signal drives and modulates the RF oscillator. The RF oscillator is of the grounded base type. C1-C4 and variable inductor, L1, set the oscillator’s center frequency to 315 MHz. R1-R3 establish DC bias conditions. L2 and L3 reduce harmonic output. In order to preserve battery life, U1 turns Q6 off when operation has ended. Turn-off occurs 20 seconds after the last RF transmission. LED's, D1-D3 and D11-D13, provide back illumination to the keypad.

Schematics