DSC TL2803G Handleiding

DSC Niet gecategoriseerd TL2803G

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Pagina 1/5

the Power of

Technology

Overview

Contents

Introduction 3 .....................................................................................

Frequency Hopping Spread Spectrum 4 .............................................

Full Two-Way Synchronized TDMA Communication 5 .........................

Secured Wireless Communication with AES Encryption 6 ...................

Unmatched Beneﬁts with a Breakthrough Technology 7 .....................

Summary 8 .........................................................................................

prior written consent of Tyco.

The trademarks and service marks of Tyco, including the Tyco mark and logo and PowerG are the exclusive property of Tyco, and

may not be used without permission. All other marks ar e the property of their respective owners. Created 04/2016.

Frequency Hopping Spread Spectrum

Frequency Hopping Spread Spectrum (FHSS) derives from military radio technology where it was designed

to be secure and reliable under adverse battle conditions. FHSS changes the frequency of a transmission

at intervals faster than an intruder can retune a jamming device. With FHSS, the bandwidth is divided

into multiple frequency channels. Once a wireless connection is established and time-synchronization

is gained, the receiver and transmitter agree on one of practically inﬁnite frequency hopping sequences.

These sequences are both encrypted and time-dependant. Based on the current time and a mathematical

calculation, both the receiver and transmitter hop to the next frequency channel in the sequence at the

same time. Unless the system time, the system encryption key and the proper calculation are all known,

the communication cannot be tracked. As a result, unauthorized interception of, or eavesdropping on, a

communication is virtually impossible.

The PowerG network uses Frequency Hopping Spread Spectrum technology. The network continuously

hops between multiple frequencies spread over the entire assigned frequency band: 8 hopping frequencies

in the 433-434MHz bands, 4 hopping frequencies in the 868-869MHz bands, and 50 hopping frequencies

in the 912-918MHz bands.

The network does not remain in a single frequency but switches frequencies 64 times a second, using an

encrypted unique pseudo-random sequence known only to devices enrolled to the PowerG panel. The

pseudo-random sequence differs from one PowerG panel to another.

By using FHSS technology, the PowerG network successfully overcomes intentional and un-intentional

interferences and jamming. Multiple PowerG-based alarm systems can operate in the same vicinity without

interfering with each other. Robustness and reliability of the wireless network increases dramatically.

An analogy to FHSS is as follows: Imagine a car driven in a multi-lane highway. As a strategy, the driver

continuously and rapidly changes lanes. If one of the lanes is blocked (by road-works or a road accident)

the car will avoid the disturbance because it is changing lanes continuously. The following ﬁgure illustrates

the FHSS concept.

Band

Time

Frequency Bad Hop

Good

Hops

Bad frequency

(interferency)

Frequency hopping avoids blocking and interferences

Product specificaties

Merk:	DSC
Categorie:	Niet gecategoriseerd
Model:	TL2803G
Gewicht:	310 g
Breedte:	150 mm
Hoogte:	115 mm
Stroom:	0.12 A
Ondersteunde beveiligingsalgoritmen:	128-bit AES
Datanetwerk:	HSPA
Compatibele producten:	HS2016/ HS2032/ HS2064/ HS2128; \nPC5003C/PC4050C /PC405CAR; \nSur-Gard System I-IP/II/III/IV/5
Bedrijfstemperatuur (T-T):	5 - 40 °C
Type product:	Universele alarmcommunicator