RF Solutions 433 MHz Range
Contents General Introduction - RF Overview of System Features Product Range
Wireless In Everyday Life Radios TV’s Cordless Telephones Garage Door Openers Cellular phones
Wireless Technology RF - the specific cycles per second of electromagnetic waves travelling through the air without wires. RF is measured in Hertz Frequency Bands are allocated and controlled by the PTT Common uses of RF Cell Phones - 900-1800 MHz band Pagers - 900 MHz band Garage Door Openers - 300 MHz band Security Systems - 300 - 900 MHz bands
Wireless Security Systems 40 MHz - 7.5 m Wavelength, Great Open Air range, Poor Structural penetration, Good Battery Life 433 MHZ - 0.80 m Wavelength, Good Open Air Range, Good Structural Penetration, Excellent Battery Life 868 MHz - Great structural penetration. A dedicated security bandwidth. Good battery life.
Wireless Transmission To transmit information using RF a carrier and some type of modulation is required Carrier - the specific frequency to carry the information Modulation - the means of encoding information on the carrier frequency
System Features General Fully compatible with the CS Range 433.92 MHz frequency Typical battery life : 5-8 years Transmitter Range ; Keyfobs 150 m (open air) PIR & Smoke Detector : 300 Metres Standard Consumer Batteries Proven Detector technology
System Features Cont’d.. General Learn-Mode Technology System Integrity Narrow Bandwidth Spatial Diversity Receiver
Learn Mode Technology Unique ID number assigned to each device at the factory During system programming the control panel Learns the specific device (ID number) into its memory The device ID number is part of the 58-bit word data pack
Learn Mode Technology Learn Mode Technology Patented 58 - 66 Bit Transmission packet Synchronization Bits Start bit Individual point identification Low battery detection Sensor status Sensor identity double-checked Stop bit - Learn-Mode Technology; Patented Learn-Mode Technology increases the ease and reliability of installations. Each device in a system has its own factory-programmed identity so the receiver simply ‘learns’ the identity of each device. This dramatically reduces installation time and eliminates programming errors in the field. Synchronization bits: Locks sensor transmission and panel into same time frame. Start bit: Tells the panel the real information is starting. Individual point identification: Sensors custom identity; fingerprint; name. Low battery detection: The sensor notifies the panel approximately 1 week before its battery fully discharges, and the panel notifies the user. Sensor status: Tells the panel if the sensor is open or closed (on/off) Sensor identity double checked: verifies that the sensor identity is the same now as it was at the beginning of the message. Stop bit: Tells the panel the sensor transmission is completed.
Sensor Transmission LEARN MODE 58-BIT SENSOR TRANSMISSION FORMAT START LOW BATTERY END SYNCHRONIZATION 20-BIT TRANSMITTER ID CODE INPUT LATCH PARITY 58-BIT SAMPLE TRANSMISSION 4080G02A.DS4
Asynchronous Transmission RANDOM TIMING 125 msec to 487 msec 20 msec 125 msec 20 msec 350 msec 20 msec 400 msec 4080G03A.DS4
When A Sensor Transmits It tells the receiver it is an ITI transmitter Sends a sensor ID number Tells the receiver what device type it is (Door/Window, Smoke, Motion etc.) Gives the status of the sensor Indicates a low battery if necessary
When A Sensor Transmits (Cont.) 8 Rounds Of Data When Sensor Is Activated 8 Rounds Of Data When Sensor Is restored 3 Supervisory Rounds Every 64 Minutes Sensors Must Check In Within a Prescribed Amount Of Time To Satisfy The panel
Wireless System Integrity Supervised - all devices report to the panel at a programmed interval Low Transmitter Battery - each device monitors its own battery and when low sends the appropriate signal to the control panel Sensor Contention - each devices transmit on a different timing interval to prevent signals canceling each other out.
Supervised Transmission 1. ‘I’m working fine’ 2. ‘My battery is low’ 3. ‘I’m open/closed A trouble condition is generated when a sensor has a problem Definition: Transmitters report every 64 minutes Each transmitter sends one supervisory transmission every 64 minutes. A low battery status is sent during each transmission (therefore a low battery condition is indicated worst case within 64 minutes).
Narrow Band Advantages Smaller System devices Longer Battery Life More Reliable Low Current Consumption Quieter Frequency Penetrates Buildings Better
What A Receiver Does? Listens For Specific Radio Frequency Signals Spatial Diversity To Help Eliminate Phase Nulls & Dead Spots. The Receiver Switches On/Off Every Millisecond Does Not respond To Noise Or Interference From Outside Sources
Dead Spots & Phase Nulls Filing Cabinets Foil Backed Insulation Mirrors Metal Ductwork Anything That Can reflect Signals Multiple Signals That Reach The Receiver At The Same Time Can Cause A Phase Null
Receiver Advantages Spatial Diversity Via Dual-Antennae Switching Superhetrodyne Receiver converts the carrier frequency to lower one and filters out unnecessary noise. Good Open Air range
Product Range 8 or 16 point 433 MHz Receiver Receiver can be mounted remotely or in panel housing Passive Infra-Red Detector Smoke Detector Door/Window Detector Two button keyfob Four button keyfob Water resistant panic button ‘Sniffer’ diagnostic tool
PIR Volumetric Coverage 9 x 16 m Next generation ASIC with ‘4D’ processing providing improved detection & false alarm immunity Precision ‘Gliding focus curtain’ True-range control (Autofocus) for stable performance in all rooms
Door/Window Detector Provided with a magnet magnet for protecting windows Selectable input for NO or NC external switch (disables door/window functionality) 2 internal reed switches allow vertical or horizontal mounting
Smoke Detector Pry-off tamper Field-exchangeable & disposable optical chamber Floating background with drift compensation Automatic self-diagnostics Dynamic full detector test Sensitivity test Manual self-diagnostics provides ‘Clean-Me®’ signal which indicates that the detector requires servicing(1) (1) Currently not processed by panel
Keyfobs Portable wireless keyfobs For arming/disarming, panic alarm 4 button; programmable buttons to activate an output 2-button 4-button
Water-Resistant Pendant Panic Sensor Water and shock resistant Recessed button prevents false alarms Activates a 24-hour emergency alarm Can be worn around the neck or its built-in clip allows the sensor to be attached to a belt or purse
‘Sniffer’ Diagnostic Tool Portable Diagnostic Tool Provides audible indication of sensor’s transmission Ideal for initial installations or trouble-shooting a system