EF4SNT00411Remote Control for Security System

LINEAR LLC FCC ID: EF4 SNT00411

LINEAR LLC FCC ID: EF4 SNT00411 STATEMENT OF ATTESTATION DXT-604 - Remote Control Transmitter FCC ID: EF4 SNT00411 The equipment under test is a low powered keyfob style transmitter that is typically used as a remote control transmitter for security systems. No supervisory signals are provided by this transmitter. This equipment has been tested in accordance with the requirements contained in the appropriate Commission regulations. To the best of my knowledge, these tests were performed using measurement procedures consistent with industry or commission standards and demonstrate that the equipment complies with the appropriate standards. Each unit manufactured, imported or marketed, as defined in the Commission's regulations, will conform to the sample(s) tested within the variations that can be expected due to quantity production and testing on a statistical basis. I further certify that the necessary measurements were made by Linear LLC, 2055 Corte Del Nogal, Carlsbad, California. 92009. Certified by: ___ _______________________ _ July 15, 2004 _ John W. Kuivinen, P.E. Date Regulatory Compliance Engineer LINEAR LLC FCC ID: EF4 SNT00411 Summary of Test Results in accord with FCC Rules Part 15 and C63.4-2001 Equipment Model: SNT00411 Transmitter Tested to C63.4-2001 Section: FCC Rules 15.231 Field Strength at a distance of 3 meters: 2800 uV/Mtr (- 6.7 dB below limit) @ 315 MHz Peak to Average Ratio: 20 dB - Fixed Duty Cycle Test Conditions: Radiated (Sections 11 & 13) Transmitter: Transmitter Frequency: 315.0 MHz Nominal (Factory Tuned Only) Bandwidth (20 dB down) < 0.020% of Center Freq. Frequency Tolerance: N/A (Nominal +/- 0.25 MHz) Frequency Stability: N/A (Nominal +/- 0.25 MHz) Transmitter Spurious at 3 meters: 372 uV/Mtr (- 4.2 dB below limit) (Worst Harmonic) Frequency: 1890 MHz Momentary Operation (Yes/No) Yes Holdover time after manual release: 0.8 seconds (maximum), 8 data words on any short (>120 mSec. activation) Duration of transmission after activation: 10 seconds (maximum) on any single manual activation Attestation: The radio apparatus identified in the application has been subject to all the applicable test conditions specified in FCC Rules Part 15 and all of the requirements of the Standard have been met. Regulatory Compliance Engineer John W. Kuivinen, P.E. ___________________________ Date: July 15, 2004 LINEAR LLC FCC ID: EF4 SNT00411 Radio Standard Specification Low Power Communication Devices C63.4-2001 and FCC Rules Part 15 1.0 General: 1.2, Exclusions to TV Broadcast Freq. Complies 2.0 Related Documents: Reference Documents for Application: CFR 47, FCC Rules Part 15 3.0 Test Equipment: Supply Voltage: Two 2016 - 3 volt lithium batteries Test Equipment List See Section 6 Signal Detector: Peak with 20 dB peak to average conversion. 4.0 Certification and Test Results: Summary of Results per See Page 1 of this Report 5.0 General Technical Requirements: 5.1 Testing Methods: Peak Signal pulse position modulated A1D signal. 5.1 Reference Standard: C63.4-2001 (FCC Procedure) 5.2 Modulation: Pulse Position 30K0 A1D, AM Modulation 5.3 Type of Antenna: Integral to Transmitter Case - Tuned Loop 5.4 External Controls: Four Push Buttons No user serviceable parts, except for battery changing. 5.5 Accessories: NONE 5.6 TX Bandwidth: <0.020 % (See Section 8) 5.7 Equipment Labels: See Section 2 5.8 Manual Disclaimer: See attached draft copy of manual 5.9 Usage Restrictions: Digital Pulse Code Only LINEAR LLC FCC ID: EF4 SNT00411 6.0 Transmitter Characteristics and Tests: 6.1 Momentary Operated Devices: Complies 6.1(a) Types of Signals: Manual Push to Transmit 6.1(a) Automatic Activation: N/A 6.1(a) Five Second Max. upon release: Complies 6.1(b) Field Strengths: Table 1 315 MHz = 6042 uV/Mtr maximum at 3 meters. 6.1(c) Bandwidth (20 dB down) <0.020 % Complies 6.1(d) Frequency Stability N/A per regulations +/- 0.25 MHz SAW Resonator Oscillator 6.1(e) Reduced Field Strength N/A 6.2 Non-Momentary Operated Devices: N/A 6.2.1 Frequency Bands: Refer to Table 1 6.3 Restricted Bands: Complies 6.5 Pulsed Operation: Complies (20 dB Peak/Average) See Section 8 6.6 Wireline Conducted Emissions: N/A 7.0 Receivers N/A 8.0 Self Certification: N/A 9.0 AC Wireline Conducted Emissions: N/A 10.0 Terminated Measurement Method: N/A 11.0 Radiated Measurement Method: See Section 8 11.1 Measuring Distance: Complies 11.2 Open Field Test Site: Complies, C63.4-2001 11.3 Equipment Test Platform: See Section 8 11.4 Measurement Method: Complies, See Section 8 12.0 DC Power Consumption Methods: N/A 13.0 Near Field Measurement for < 30 MHz: N/A 14.0 Test Report Submission: See Attached

LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411 FCC LABEL AT THIS LOCATION

LINEAR LLC FCC ID: EF4 SNT00411 FCC IDENTIFICATION LABEL LABEL FACSIMILE Canada: RSS/CNR 210: 1078 SNT00411 Linear LLC Model: DXT-604 Part Number: SNT00411 Frequency: 315 MHz This device complies with FCC Part 15 and IC Canada Rules and Regulations. 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. FCC ID: EF4 SNT00411

LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411 FCC LABEL AT THIS LOCATION LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411

LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411 FCC LABEL AT THIS LOCATION

LINEAR LLC FCC ID: EF4 SNT00411 FUNCTIONAL DESCRIPTION 1.0 DESCRIPTION The DXT-604 is a four channel, key-chain type transmitter operating as a low power communication device. The center frequency is SAW stabilized at 315 MHz. The data output is DX Code formatted. The transmitter case is grey plastic and has four silicone buttons on the front; two gray, one black and one red. The DXT-604 and the DX Code format are designed for use with Linear DX format 315 MHz receivers and consoles. Typical receivers that could be used with this transmitter are the DXR-701/2, DXSR-1504/8, DVS-1200/2400, Dual 824 and PERS-2400. Each DXT-604 is programmed with a DX format factory ID code. The DX format code gives a over 1 million possible transmitter IDs. Two lithium coin cell batteries, type 2016, are included. A two-ring key chain is included. The batteries should last about 5 years under normal use. 2.0 FUNCTION The DXT-604 is activated by pressing any one of the four buttons. Until activation, microprocessor, U1, is in sleep mode. Upon activation, U1 wakes up and outputs signals to turn on the oscillator, Q1, and to provide DX code data to the RF amplifier, Q2. The frequency of oscillator Q1 is stabilized at 315 MHz by surface acoustic wave (SAW) resonator FR1. Data output at U1-3 modulates the base of transistor Q2 which transmits the pulse-modulated carrier via the antenna, E1. 3.0 SPECIFICATIONS Product Identification: DXT-604 four channel mini transmitter (SNT00411). Encoding Format: Linear DX Code. Encoding Technique: Transmitters are factory coded with a sequential transmitter ID number. Number of Channels: Four. Timing: Transmission stops after 10 seconds when button is held on. When momentarily activated the transmitter sends a minimum of 8 data words (800 milliseconds transmission). RF Carrier Frequency: 315.00 MHz ± 250 KHz. Power Requirements: Two 2016, 3 volt batteries. Visual Indicator: None. Operating Temperature: 0° C to +70° C. Tested –30° C to 70° C. LINEAR LLC FCC ID: EF4 SNT00411 Size: 2.3" x 1.3" x 0.5” Current Consumption: 8 mA (average) transmitting. <4 uA Standby. All specification are nominal unless otherwise noted.

LINEAR LLC FCC ID: EF4 SNT00411

LINEAR LLC FCC ID: EF4 SNT00411 REPORT OF MEASUREMENTS LINEAR LLC FCC ID: EF4 SNT00411 Model: DXT-604 Remote Control Transmitter The enclosed documents reflect the requirements contained generally within the code of Federal Regulations, Title 47, Parts 2 and 15 as most recently published October 1, 2003 and all other applicable revisions made by the Commission since that time. The specific rule sections for which the enclosed documents demonstrate compliance or rely upon to demonstrate compliance with the Commission's application and technical standards are as follows: 15.201-15.207, 15.231, Subpart C, Intentional Radiators. Test Procedure C63.4-2001, Section 13, Measurement of Intentional Radiators was used for the testing of this device. In accord with Section 2.948 of the Commission's Rules, a Test Site submittal is on file with the commission and a Letter of Acceptance dated March 19, 2004 (File 90767) is a portion of the Commission's records. A test site submittal is on file with Industry Canada. The Industry Canada file number is 46405-1078, submission 101286. Dated June 9, 2004. All of the information contained within this documentation is true, correct, and complete to the best of my knowledge. ____________________________ __ July 15, 2004 _ John W. Kuivinen, P.E. Date Regulatory Compliance Engineer LINEAR LLC FCC ID: EF4 SNT00411 DURATION OF RF TRANSMISSIONS DXT-604 REMOTE CONTROL TRANSMITTER This transmitter is manually activated. Typically, it is used for remote control of a security system. As such, it may be operated continuously by the user (FCC Rules 15.231(a)(4)). However, due to battery constraints and an accidental continuous activation causing interference to the system, the maximum manually activated transmission for a single press of a pushbutton is 10 seconds. When a push button is quickly pressed but then released, the transmitter will cease transmitting only after a minimum of 8 data words (8 words X 100 mSec/word = 800 mSec. minimum transmission) have been sent. FCC Rules 15.231 (a)(1) allows no longer than 5 seconds upon the release of a manually activated transmitter. Signed: John W. Kuivinen, P.E. Regulatory Compliance Engineer LINEAR LLC FCC ID: EF4 SNT00411 TESTING INSTRUMENTATION AND EQUIPMENT LIST SPECTRUM ANALYZERS: H.P. HP8562A 1KHz to 22GHz S/N 2913A03742 Calibrated 02/04 Due 02/05 ANTENNAS: (2) Ailtech DM105A T1 20-200 MHz Tuned Dipole S/N 93412-105 and 93412-114 Calibrated 3/04 Due: 3/05 (2) Ailtech DM105A T2 140-400 MHz Tuned Dipole S/N 93413-113 and 93413-117 Calibrated 3/04 Due: 3/05 (2) Ailtech DM105A T3 400-1000 MHz Tuned Dipole S/N 93413-105 and 93414-111 Calibrated 3/04 Due 3/05 (2) AH Systems SAS-200/511 1-12.4 GHz Log Periodic S/N 118 and 124, P/Ns 2069 (1) AH Systems SAS-200/540 20-330 MHz Biconical S/N 367 P/N 2052 INSTRUMENTATION: H.P. HP8656B RF Generator 100 KHz - 990 MHz S/N A4229590 Calibrated 3/04 Due 3/05 Solar Electronics Line Impedance Stabilization Network, Type 8012-50-R-24-BNC Calibrated: 3/04 S/N 8379585 Due: 3/05 HP 8447D Broadband preamplifier, 0.1-1300 MHz S/N 2443A03660 Calibrated: 3/04 Due: 3/05 Mini-Circuits ZFL-2000 broadband preamplifier, 10-3000 MHz S/N Lin 001 Calibrated: 3/04 Due: 3/05 ACCESSORIES: (2) Ailtech Rulers calibrated in MHz 4 Meter ABS Antenna Mast and Trolley Tektronix C5C Scope Camera Eighty Centimeter Tall, Motorized Wooden Turntable BNC to BNC Cables - as-required (2) 25' RG-214/U Low-loss Coaxial Cable S/N- LIN001 & LIN002 Calibrated: 3/04 Due: 3/05 (2) 3' RG-55/U Low-loss Coaxial Cable, calibarated as part of the preamplifiers. Automatically taken into account when used with the above itemized range preamplifiers. LINEAR LLC FCC ID: EF4 SNT00411 MEASUREMENT OF RADIO FREQUENCY EMISSION OF CONTROL AND SECURITY REMOTE CONTROL DEVICES FCC RULES PART 15, C63.4-2001 TEST PROCEDURE I. INTRODUCTION As part of a continuing series of quality control tests to ensure compliance with all applicable Rules and Regulations, this enclosure details the test procedures for certain radio control devices. Testing was performed at a test site located on the property of Linear LLC, 2055 Corte del Nogal, Carlsbad, California 92009. II. MEASUREMENT FACILITY DESCRIPTION The test facility is a specially prepared area adequately combining the desirability of an interference free location with the convenience of nearby 120 volt power outlets, thus completely eliminating the incidence of inverter hash, so often a problem with field measurements. III. DESCRIPTION OF SUPPORTING STRUCTURES For Measuring Equipment - The antenna is supported on a trolley that can be raised and lowered on a mast by means of remote control to any level between 1 meter and 4 meters above the ground. For measurements at 3 meters, an antenna height (center of dipole) of about 1 meter generally yields the greatest field strength. For measurements at 1 meter, an antenna height equal to the device under test generally yields the greatest field strength. Usually, horizontal polarization yields the greatest field strength for both 1 and 3 meter measurements. For Equipment Under Test (EUT) : The equipment to be tested is supported by a wooden turntable at a height of eighty centimeters. A two axis swivel at the top of the turntable permits the unit under test to be manually oriented in the position of maximum received signal strength. The turntable can be rotated by remote control. Test Configuration - All transmitters were located eighty centimeters above ground, at a distance of three meters from the antenna. They were each oriented for maximum radiation by rotating the turntable. The antenna was then moved vertically along the mast for optimum reception in both horizontal and vertical planes. Where no emissions were found, the antenna was also moved to one meter distance to improve system sensitivity. All receivers were located eighty centimeters above ground, at a distance of three meters from the antenna. They were each oriented for maximum radiation by rot…

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LINEAR LLC FCC ID: EF4 SNT00411 DEVICE: DXT-604 Remote Control Transmitter PHOTOGRAPH: Occupied Bandwidth CONDITIONS: Transmitter Fundamental. A1D Modulation - Pulse Position Modulation. SAW Resonator Frequency Determining Element. SPECTRUM ANALYZER CONTROL SETTINGS CENTER FREQUENCY: 315 MHz INPUT ATTENUATION: -10 dB SCAN WIDTH: 10 KHz / Div. PREAMPLIFIER GAIN: 0 dB SCAN TIME: 1 Sec LOG REF. LEVEL: 0 dBm RF BANDWIDTH: 3.0 KHz ANTENNA: 18" Dipole Ant. at Analyzer Input TUNED TO: N/A ANTENNA DISTANCE: 0.25 Meters ANTENNA HEIGHT: N/A SYSTEM NOISE FLOOR: N/A NOTES: Per 15.231(c), Occupied Bandwidth (20 dB down) is +/- 15 KHz. This is less than 0.020% of the center frequency. FCC Rules, 15.231(c) devices must be less than 0.25% of center frequency. This device therefore complies with 15.231(c). LINEAR LLC FCC ID: EF4 SNT00411 DEVICE: DXT-604 Remote Control Transmitter PHOTOGRAPH: Transmitter Spurious Emissions +/-25 MHz of the tuned center freq. Peak of RF signal set to zero dB reference line (top of screen). CONDITIONS: Transmitter Fundamental. A1D Modulation, SAW Resonator Frequency Determining Element. SPECTRUM ANALYZER CONTROL SETTINGS CENTER FREQUENCY: 315 MHz INPUT ATTENUATION: -10 dB SCAN WIDTH: 5.0 MHz/ Div. PREAMPLIFIER GAIN: 0 dB SCAN TIME: 10 Sec. LOG REF. LEVEL: -20 dBm RF BANDWIDTH: 10 KHz ANTENNA: 18" Dipole Antenna on Analyzer Input TUNED TO: N/A ANTENNA DISTANCE: 0.25 Meters ANTENNA HEIGHT: N/A SYSTEM NOISE FLOOR: N/A No significant emissions occur outside of the of the rated center freq. except for harmonic spurious signals. Minor signals on either side of carrier are ambients.

LINEAR LLC FCC ID: EF4 SNT00411 17 BITS / DATA WORD + 3 BLANK FRAMES BETWEEN WORDS DATA WORD = 20 X 5000 USEC = 100 MILLISECONDS FOR NOMINAL DATA WORD FRAME TWO DATA WORDS SHOWN ABOVE LINEAR LLC FCC ID: EF4 SNT00411 INDIVIDUAL DATA PULSES, QUATERNARY ENCODED DATA FORMAT 500 uSEC FOR EACH DATA PULSE TIME DURATION FOR EACH PULSE IS FIXED 3 DATA PULSES SHOWN ABOVE LINEAR LLC FCC ID: EF4 SNT00411 Transmitter Duty Cycle Calculations and Time Domain Information DX Data Format Worst case duty cycle is computed because coded pulse width type A1D modulation is used. Data rate is seventeen 500 uSec pulses in any 100 mSec. time window. During transmission, the transmitter sequentially emits a group of 17 encoded pulses in the form of a pulse-keyed carrier. The data stream consists of preamble and encoded data string. REAL TIME ANALYSIS: Description Total Time "On" Time Total Transmission 17 x 500 uSec. = 8.5 E-3 Sec on time In compliance with FCC Rules 15.35(c), the following duty cycle factor is used for all field strength calculations. A 100 mSec. full word time window is selected with the worst case programmable on time ratio. 8.5 E-3 On time = 8.5 E-2 on time per 100 mSec. time window 100 E-3 Total time Window 20 log (8.5E-2) = -21.4 dB 20 dB Duty Cycle Ratio (Per FCC Rules)

LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411 LINEAR LLC FCC ID: EF4 SNT00411