Omega Vehicle Security zSeries manual With Line-of-Sight, Distance feet Radius feet

Page 55

5.2 With Line-of-Sight

When installing your Coordinator it is important to position your device in such a way to optimize the antenna location within what’s known as the “Fresnel Zone”. The Fresnel Zone can be thought of as a football-shaped invisible tunnel between two locations that provides a path for RF signals between your End Device and your Coordinator.

END DEVICE	COORDINATOR
	ANTENNA
ANTENNA	FRESNEL ZONE

Figure 5.2 Fresnel Zone

In order to achieve maximum range, the football-shaped path in which radio waves travel
must be free of obstructions. Obstacles in the path (especially metal) will decrease the
communication range between your End Device and Coordinator. Also, if the antennas
are mounted just barely off the ground or below the ceiling, over half of the Fresnel zone
ends up being obstructed resulting in significant reduction in range. Below is the
calculated radius of the football-shaped tunnel for different distance range:
		Distance (feet)		Radius (feet)

		100		3.2
		200		4.5
It is recommended that		300		5.5		least 60% of space is
	within the tunnel of the above radius, at
free of obstruction.
Since signal reaches destination directly in a line-of-sight situation, it is important to
adjust antenna properly to achieve maximum performance. Antenna for the Coordinator
and End Device should be perpendicular to the plane where Coordinator and End
Device is located.

49

Image 55

Contents User’sGuide Page Table of Contents Appendix D Appendix aAppendix B Appendix CList of Figures Page Features EMC Considerations Part IntroductionDescription Description ZSeries Wireless System on the Ethernet Network Part Hardware RearFrom TOP to Bottom Disassembly of the End Device Disassembly End DeviceParts of the Coordinator Mounting the Coordinator Dimensions and Mounting CoordinatorDevice ID did 8 Position DIP Switch Setup DIP Switches DIP Switch Setup Device ID didNID DIP Switch Setup Network ID NIDDefinitions Ethernet 4 Position DIP Switch Setup DIP Switch Setup Ethernet Coordinator10 RJ45 Pinout 2 10Base-T Crossover Wiring Network Protocols Part Network ConfigurationDhcp DNS Default IP AddressIP Address Section Network ConnectionsPart Operations Using the Telnet or Web browserIConnect Software Accessing the zSeries System for Configuration Access Control Setting a New IP Address over the NetworkCoordinator’s Configurations and Operations Wireless Sensors HomePower Up Device Select Readings by Group Get Readings from the End DeviceTheReadings fields are defined as follows Java Runtime Environment 1.4 Setup instructions Java Runtime Environment Setup10 Java 1.5.x.x. Screen Shots Diagnostics Accessing Coordinators units using the internetAccessing Coordinators units over Peer-to-Peer network Permission java.security.AllPermission Java PolicyJava Policy file and copy it onto a folder Grant codeBase http//192.168.1.20012 Java Policy Djava.security.policy=C\0JAVAPOLICY\javapolicy.txt13 Select Chart by Group ChartChart 15 Diagnostic Diagnostic16 Configuration Configuration17 Sensor Setup by Group Sensor SetupUpdate Checked Box 18 Sensor SetupSensor Parameters Host Name Web ServerHTTPget Program Telnet Setup2000 HTTPget using PortHttpget -r -S Erdgall 192.168.1.1352000 -C1 -q WhereARP Protocol HTTPget and ARP to Setup Device IP AddressArp -s 192.168.1.200 00-03-34-00-00-06-b6 Httpget -r -S 00000000 192.168.1.2001 where22 ARP Commands and Responses 23 iLog Software Logging Data for End Deice #1, 3 ILog SoftwareMail Notifier Software InstallationEmail Setup Email Address SetupEQNF003 Device Setting and ConfigurationMail Notifier Device Setting Alarm EditorEnvironment / Operating Conditions PartGeneral Deployment Guidelines Operation in Buildings Control Room OfficeDistance feet Radius feet With Line-of-SightWithout Line-of-Sight Material Type Possible Signal ReductionCasing and Closure Around the Antenna Channels Fine Adjustment in PerformanceRelative Humidity Part 6 SpecificationsApprovals Dhcp DIP SwitchesAppendix Aglossary Appendix BIP Address Mask Dotted Notation Mask Binary Mask Bits Appendix CIP NetmaskAddress Class Mask Binary Value Mask Decimal Value Or Dotted NotationChar No Parity No parity Ascii Chart Dec Hex BinaryAscii Dec BinaryDec Hex Ctrl Key Ascii Control Codes Definition Appendix D Ascii Chart ContinuationChar Equiv Appendix E ILog Error Messages Error # Description Erdg Telnet Commands TableResponse 7 EngrLAB 01000010 Appendix F Telnet Commands TableOpen Appendix G Frequently Asked Questions FAQLost Page WARRANTY/DISCLAIMER Shop on line at omega.com