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LAN to LAN Bridge

User’s Guide

Models WBS11 & WBC11

Version 1.0 October 2001

Содержание WBC11

Страница 1: ...LAN to LAN Bridge User s Guide Models WBS11 WBC11 Version 1 0 October 2001...

Страница 2: ...ublication and to make changes to any or all parts of this manual at any time without obligation to notify any person or entity of such revisions or changes Product names appearing in this document ar...

Страница 3: ...c Alignment of the Antenna 18 2 3 Configuration of the Bridge Units 21 2 4 Fine Tuning of the Bridge Link 24 2 5 Installing the Bridge Unit 26 3 BRIDGE CONFIGURATION PROGRAM 27 3 1 Installation 28 3 2...

Страница 4: ...lso supplies you with a professional mechanical installation The professional installer covers the following areas Network link installation Mechanical installation Weather resistant installation Ligh...

Страница 5: ...The package you have received contains the following items Bridge server unit and or Bridge client unit Antenna adapter cable Power supply CD ROM containing the bridge configuration software and user...

Страница 6: ...Configuring the bridge client unit s 9 Tuning the antenna alignment 10 Fine tune the bridge communication values if needed 1 4 Hints for a Successful Installation Have your wireless bridge installed b...

Страница 7: ...experienced antenna installation professionals who are familiar with local building and safety codes and wherever applicable are licensed by the appropriate government regulatory authorities Failure...

Страница 8: ...al surface Figure 1 1 displays the radiation pattern of an antenna with the gain referenced to an equivalent isotropic source The gain of the isotropic source is the unity or zero decibels Depending o...

Страница 9: ...lly polarized signals are perpendicular to the reflecting surface and will either be totally reflected from a conductor or will propagate along the surface depending on the angle of the arriving energ...

Страница 10: ...or large vehicles Diffraction also figures significantly in scattering at hilltops lying in the propagation path 2 1 2 4 Locating the Antenna Free space radiation patterns are the baseline performance...

Страница 11: ...this surface and weakens with increasing range The signal is reduced by 6 dB for every doubling of distance from the source The loss path between the source radiators with spherical patterns is compu...

Страница 12: ...ning line of site Letting this balloon up on one side until it is visible from the other side will tell you exactly the required height for this link Repeat this for both sides Besides the LOS there i...

Страница 13: ...ain helix array antenna The output power of the long range bridge is Pout 10 dBm Antenna gain is Gt 16 dBic Cable loss and connector loss is Cr 4 5 dB Therefore the EIRP effective isotropic radiated p...

Страница 14: ...ations For this there is a safety margin included This margin is called the FADE margin Many factors can influence the fade margin it is safer not to be optimistic about it A valid value is approximat...

Страница 15: ...smallest point typically an antenna The antenna cable will then conduct the enormous amount of energy towards the bridge If no lightning arrestor is placed in between the antenna cableand the bridge...

Страница 16: ...ge No large conducting objects in the area No other antennas close When mounting on a pole Let the antenna rise above the pole Remember that trees grow 3 Mount the antenna It can never be too solid Us...

Страница 17: ...ng specialist for advice on grounding Below are some general hints on lighting protection Never mount an antenna though the roof only on the roof Keep the antenna cable as much as possible out doors T...

Страница 18: ...r rate but it does not go without saying In some cases the lowest Bite Error Rate is reached at a signal strength level that is not the highest possible The bridge has a Radio Signal Strength Indicato...

Страница 19: ...not have to be connected If you have a directive antenna aim it at the other antenna Figure 2 6 Basic setup of two bridge units This diagram is based on a 10Base T RJ 45 connection This connector is l...

Страница 20: ...mitting a beacon approximately 10 times per second even if there is no connection to the client The client will blink as soon as it receives a beacon It is this function that is used for the first ali...

Страница 21: ...owered up for the first time the top IP address field is empty To set an IP address select Set a fixed IP address then enter the MAC address IP address Subnet mask and finally the default gateway Make...

Страница 22: ...try limit Fragmentation threshold Physical properties Antenna settings Regulatory domain Channel ED threshold Most of these settings do not require any changes for normal operations Point to point lin...

Страница 23: ...he other bridge link By choosing another channel interference can be avoided Within ETSI the available channel settings are channel 1 7 and 13 These channels are not interfering and need to be used wh...

Страница 24: ...quality SQ2 Before the signal quality measurement can be started the MAC address of the other bridge unit needs to be entered in the PEER field It is also possible to change the update speed of the m...

Страница 25: ...gain and verify that it is still at an acceptable level Repeat this procedure on both bridge units several times The chart below displays the signal level versus the RSSI SQ2 and the speed Speed is di...

Страница 26: ...bridge is supplied with an antenna adapter cable Use this cable with your installation If for some reason this cable is too short consult I O for another cable If the cable is too long do not cut the...

Страница 27: ...idge units This program allows you to install and maintain your bridge link It contains an excellent performance monitor for fine tuning and troubleshooting Within this chapter all options in the prog...

Страница 28: ...ppear If it does not appear after a few seconds click Start Run enter d setup exe d is the location of your CD ROM drive and click Ok The set up wizard will guide you through the installation process...

Страница 29: ...29 Figure 3 2...

Страница 30: ...ng connected for the first time two IP addressing processes are possible The first is when you have the bridge connected to a network without a DHCP server and the second is where there is a DHCP serv...

Страница 31: ...address can automatically be assigned to the bridge Set a fixed IP address With this option an IP address can be manually set First the MAC address needs to be entered If an IP address is already conf...

Страница 32: ...he Device tab the following parameters can be set SSID or ESSID name of the wireless link Security algorithm used AirLock or none Radio channel preferred 1 7 or 13 Antenna settings MAC properties Acce...

Страница 33: ...fic is out of balance or in a point to multipoint Short will work on standard point to point links ACK window This is the waiting time for the acknowledgement Select the setting that corresponds with...

Страница 34: ...1 13 1 7 13 SPAIN Spain 10 10 FRANCE France 10 10 MKK Japan 14 14 Channel The options displayed in this field are the allowed channels with in the chosen regulatory domain Use this option if multiple...

Страница 35: ...ults by pushing a paperclip in the little hole next to the power switch while switching the bridge unit on When you push a paperclip in the reset hole while the bridge unit is switched on only the loc...

Страница 36: ...wn If the radio LED of the client is blinking or the Bridge Monitor s signal strength indicator on the Tuning screen shows a good signal Make sure that the SSID ESSID of all bridge units is exactly th...

Страница 37: ...4 2 497 GHz Japan ETSI Supported bit rates 11 Mbps 5 5 Mbps as well as interoperable with IEEE 802 11 Direct Sequence Spread Spectrum compliant devices that support 1 Mbps and 2 Mbps Modulation 1 0 M...

Страница 38: ...ified shield Ethernet connection RJ 45 for 10Base T Power Supply AC 110 240V 50 60 Hz to 9VDC converter Included Environmental Temperature Range 0 40 C 122 F operating Temperature 95 humidity non cond...

Страница 39: ...tenna performance and efficiency while minimizing size The SLH 10 utilizes circular polarization to minimize the effects of multipath interference It is housed in a rugged radome that protects the ant...

Страница 40: ...nimize the effects of multipath interference It is housed in a rugged radome that protects the antenna from the weather as well as providing an aesthetically pleasing appearance The SLH 12 uses a cupp...

Страница 41: ...e auto recovery Over voltage protection 110 145 Operating temperature 0 30 C 100 40 C 50 load Withstand voltage I P O P 3KVAC I P FG 1 5KVAC 1min Safety standards UL 1950 CSA 22 2 TUV EN60950 EMC stan...

Страница 42: ...no circumstances should the antennas be mounted more than 50 feet away from the bridge units as the loss of signal strength and increased noise are substantial Adapter Cable for use with an Extension...

Страница 43: ...195 cable as well as the Type N connectors At the time of this printing the following sources are available for these products Electro Comm Distributing Denver Colorado 800 525 0173 303 371 8182 Kimba...

Страница 44: ...formation is then off loaded onto a local system Base Station In mobile telecommunication a base station is the central radio transmitter receiver that maintains communication with the mobile radio te...

Страница 45: ...pread Spectrum FHSS Direct Sequence Spread Spectrum DSSS and Infrared Infrastructure An integrated wireless and wired LAN is called an Infrastructure configuration As compared to Ad Hoc Mode where com...

Страница 46: ...connected with an imaginary straight string There should never be any object blocking this line Multi path Multi path effects can be explained as coherent signals signals from the same source arriving...

Страница 47: ...ts that a message is divided into for efficient routing through the Internet For example when a web page is downloaded from a web server the TCP program layer in that server divides the file into pack...

Страница 48: ...d ONLY by experienced antenna installation professionals who are familiar with local building and safety codes and wherever applicable are licensed by the appropriate government regulatory authorities...

Страница 49: ...handles the data while the radio and modem controls are common The external antennas are connected to the transceiver by unique non standard antenna connectors The following antenna assemblies are in...

Страница 50: ...less Bridge differs by regulatory domain Please check if the regulatory domain fits your country Please refer to Section 4 5 for reading regulatory domain in the Wireless Bridge and to chapter 4 9 for...

Страница 51: ...FROM THE FURNISHING OR FAILURE TO FURNISH PRODUCTS SPARE OR REPLACEMENT PARTS INFORMATION OR SERVICES HEREUNDER UNDER NO CIRCUMSTANCES SHALL I O BE LIABLE IN ANY WAY FOR INDIRECT SPECIAL OR CONSEQUENT...

Страница 52: ...not rent or lease the SOFTWARE You may transfer your interest in this License on a permanent basis provided you retain no copies or versions thereof and the recipient agrees to the terms of this Agre...

Страница 53: ...SSLY EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCEPT AS EXPRESSLY SET FORTH HEREIN IN NO EVENT SHALL I O BE LIABLE FOR ANY CLAIMS OR DAMAGE ARISING DIREC...

Страница 54: ...free or 1 801 972 1446 Hours of support are 7 00 a m to 4 00 p m MST Monday Friday Voice mail messages may be left outside normal hours of operation Support You must have your product serial number t...

Страница 55: ...you a replacement unit Reuse the packing materials to return the original unit Return the original product freight prepaid Make sure that the RMA number on the outside of the package Replacement unit...

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