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March 1, 2002                                                                                                                                         Page C8  

Basic

 ARCi Internet

 – System Description 

 

                                                                         Subscriber Configuration            

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The 

ARCi Internet

 subscriber installation consists of the ARCi subscriber integrated antenna and 

radio system mounted on the exterior of the subscriber facility and the wireless modem located 
inside the structure.  A single power and signal cable is run between the integrated antenna and 
the modem location.  See figure C2. 
 
The outdoor ARCi Subscriber Unit is mounted on a chimney or a tripod similar to a TV antenna, or 
on a pipe mounting arrangement similar to a small satellite TV dish.  It must be in a position with 

Modem

DC Inserter

ARCi 

Subscriber

Up

st

ream  > 

DC Power  > 

<  Downstream 

Figure C2 

Summary of Contents for AR1255

Page 1: ...io Cells Inc Other product and company names mentioned herein may be the trademarks of their respective owners This publication may include technical inaccuracies or typographical errors Changes are periodically made to the information herein these changes will be incorporated in new editions of this publication ARCi may make improvements and or changes in the product s described in this publicati...

Page 2: ...rranted as provided above for the remainder of the original warranty period or for ninety days from the date of return as applicable whichever is longer RETURN OF EQUIPEMENT UNDER WARRANTY If an item of Equipment malfunctions or fails in normal intended usage and maintenance within the applicable Warranty Period a the Customer shall promptly notify ARCi of the problem and the serial number of the ...

Page 3: ...xed Wireless Internet Delivery System Physical Planning and Installation Manual Entire Contents Copyright 2001 2002 Advanced Radio Cells Inc 910 Campisi Way Suite 1F Campbell CA 95008 USA Phone 408 558 2760 888 863 8225 FAX 408 371 7584 www arcells com ...

Page 4: ...March 1 2002 Page A1 A Table of Contents ...

Page 5: ...t Delivery System Physical Planning and Installation Manual Table of Contents A Table of Contents B Introduction C System Description D Antenna and Frequency Planning E Hub Installation Detail F Subscriber Installation Detail G Link Budget Paramaters H Reader Feedback ...

Page 6: ...March 1 2002 Page B1 B Introduction C t t ...

Page 7: ...rmance levels that normally exceed DSL Figure 1 Typically the ARCi Hub Antenna is mounted on a building roof or tower structure with an unobstructed as possible view of the geographic area to be served by the ARCI Internet system Each ARCi Hub Antenna illuminates a horizontal arc of about sixty degrees and a distance of about five miles Therefore an omni directional system would Hub Antenna Hub Ca...

Page 8: ... user has data to transmit upstream to the Internet the modem awaits its time slot as assigned by the wireless hub turns on its transmitter sends its data to the hub and then turns off its transmitter The WMTS working in conjunction with the Network Manager provides the system with TCP IP related services such as DHCP server TFTP server time server etc The Gateway provides certain TCP IP and ISP f...

Page 9: ...March 1 2002 Page C1 C System Description ...

Page 10: ...em Description Single Sector Hub Configuration Rx Figure C1 Hub Site UPS DC Power Supply Wireless Hub WMTS Backhaul to ISP Upconverter ARCi Hub Network Manager PC Windows NT 2000 100 Mbps Ethernet Sw Gateway Probably Unix Router CSU DSU Telemetry support will be available in late 2002 ...

Page 11: ...ides mounting information test access and system grounding recommendations for the antenna and wireless hub The ARCi Specifications section provides dimension weight and mounting details Located in the equipment room are 1 Wireless Hub and its network manager system 2 Downstream Upconverter 3 100 Mbps Ethernet switch 4 Gateway system 5 Router and ISP access equipment 6 Uninterruptible power supply...

Page 12: ... the relationship of the Hub site to the geography to be covered by the system Each hub requires a separate Upstream and Downstream IF cable so a six sector six ARCi Hub installation would require 12 IF coaxial cables Refer to figure C1 The DC power and telemetry cables are simply paralleled in a multi sector configuration This can be accomplished by running separate power telemetry cables from ea...

Page 13: ...t 30 MHz Downstream signal frequency 477 through 577 MHz nominal signal level 50 dBmV Maximum cable loss between upconverter and ARCi hub 15 dB at 500 MHz Power interface Switchcraft type EN3 6 pin male connector on both upstream and downstream radio enclosures two per hub antenna Nominal 8 5 Vdc at 920 100 mA combined upstream and downstream Telemetry RS 485 implemented in same connector as power...

Page 14: ...way the Network Manager may be installed at a remote location such as the ISP s control center See the Vyyo V3000 Wireless Hub Users Manual for more detail The network manager PC also monitors certain parameters of the transmitter s and receiver s located within the associated ARCi hubs It also enables upstream frequency selection for each hub receiver Telemetry support for this function will be a...

Page 15: ... run to the equipment room from each ARCi Hub or an Outdoor Junction Box OJB can be installed in the vicinity of the hub antennas rooftop tower structure and a single appropriately sized cable run to the equipment room See the Hub Installation Details section of this manual for more information The electronics in the hub antenna are designed to function with a DC voltage at the hub nominally 8 5 V...

Page 16: ...r facility and the wireless modem located inside the structure A single power and signal cable is run between the integrated antenna and the modem location See figure C2 The outdoor ARCi Subscriber Unit is mounted on a chimney or a tripod similar to a TV antenna or on a pipe mounting arrangement similar to a small satellite TV dish It must be in a position with Modem DC Inserter ARCi Subscriber Up...

Page 17: ...ill support up to 15 PCs2 sharing the modem A small DC inserter device is connected between the modem and the lead to the outdoor unit The inserter has a cord mounted power supply wall wart as does the modem Subscriber Interfaces See also the ARCi and Vyyo specifications section of this manual ARCi Integrated Antenna The data transmit and receive signals as well as the DC power share a common cabl...

Page 18: ...March 1 2002 Page D1 D Antenna and Frequency Planning ...

Page 19: ...enna up in the sky receive less power as do elevations below straight out Therefore the antenna is normally pointed at the furthest subscriber to be served with the lower elevations providing appropriately less power to closer subscribers Antenna Patterns See the Antenna Patterns section of this manual for measured plots typical of ARCi antennas Other Antenna Configurations Contact ARCi for other ...

Page 20: ...er Modem Modem center freq MHz center freq MHz center freq MHz EIA Channel 481 5729 429 58 487 5735 435 59 493 5741 441 60 499 5747 447 61 505 5753 453 62 511 5759 459 63 517 5765 465 64 523 5771 471 65 529 5777 477 66 535 5783 483 67 541 5789 489 68 547 5795 495 69 553 5801 501 70 559 5807 507 71 565 5813 513 72 571 5819 519 73 Adjacent Sectors The ARCi standard hub antenna has been described abo...

Page 21: ...tennas See Figure D1 following In a 10 Mbps hub one WMTS downstream signal is utilized and two upconverters output the same signal on frequency A and frequency B In a 20 Mbps hub two WMTS downstream signals are utilized each driving a separate upconverter A and upconverter B A 30 Mbps hub can be created by utilizing three upconverters in an ABCABC pattern See figure D2 A B A B B A Omnidirectional ...

Page 22: ...tware installation guide All modems utilizing a given upstream channel must transmit on the same frequency and each modem can operate on only one upstream channel Notes 1 These frequencies are subject to change 4 Additional upstream frequencies will be available in 2002 5 Contact the factory when upstream channels bandwidths of 400 KHz 800 KHz or 1 6 MHz are to be utilized U S FCC approved systems...

Page 23: ...hus a typical six sector omnidirectional hub would utilize a single six input WMTS upstream card See Figure D3 following This omnidirectional system might pair downstream channel A Figure D1 with upstream channel G Figure 5 etc See Table D3 for this example Table D3 Sector Example Downstream Upstream Sector Channel Channel North A I NE B G SE A H South B I SW A G NW B H I G H I H G Figure D3 Upstr...

Page 24: ...March 1 2002 Page E1 E Hub Installation Detail ...

Page 25: ...c Diagram Outdoor Unit F Male Connector RG 6 Installer Responsibility DC Telemetry Connectorized Cable Included with Hub Receive Ground Hub to Supporting Structure or Building Steel per NEC or Local Code Note Rear weather cap must be in place and all screws secured for outdoor installation ...

Page 26: ...ed and must be rotated into the correct position prior to seating The locking ring is quite stiff and must be turned approximately turn clockwise for proper connection Be sure that the upstream and downstream RG 6 and the power telemetry cables clear the mounting screw holes for the rear weather cap Refer to the photograph in Figure E1 Dress the cables as shown in the photograph and secure with a ...

Page 27: ...g brackets will accommodate pipe from 1 5 to 2 25 inches in outside diameter Up tilt or down tilt is accomplished by means of adjusting the nuts on the 5 16 inch threaded bolts captive to the mounting assembly See Figure E3 for details Figure E1 Cable Installation and Dressing Figure E2 Weather Cap Installed Receiver Upstream Transmitter Downstream Rear Weather Cap ...

Page 28: ... opening in the rear weather cap Figure E4 illustrates a typical installation Be certain to provide a drip loop of cable bundle is routed upward In the case of a single sector single ARCi headend installation route the bundle of three cables to the hub indoor equipment room Take care to leave suitable drip loops and bond the shields of the RG 6 and power telemetry cables to ground per local codes ...

Page 29: ...March 1 2002 Page E6 Figure E4 Hub Antenna and Cable Installation Cable Access ...

Page 30: ...eam IF cable so a six sector six ARCi Hub installation would require 12 IF coaxial cables The DC power and telemetry cables are simply paralleled in a multi sector configuration This can be accomplished by running separate power telemetry cables from each ARCi Hub antenna to the equipment room or by installing an Outdoor Junction Box OJB on the mounting structure adjacent to the Hub antennas and p...

Page 31: ...d leads to the negative bus on the fuse block and the enclosure s ground lug The incoming DC cable is attached to the bottom of the DC bus on the fuse block Cables to the individual ARCi Hub antennas light gray terminate on the right side of the fuse block The electrolytic capacitor 2200 uFd across the power supply busses reduces transients when individual Hub power connectors are inserted or remo...

Page 32: ...er Panel Hoffman A14P12 Fuse Block Blue Sea Systems 5015 West Marine Retail www bluesea com Ground Bus Blue Sea Systems 2301 Dual Bus use in lieu of fuse block or for telemetry paralleling Blue Sea Systems 2702 Rubber Insert couplings locknuts bushings Electric Supply Trade Shielded Cat 5 Cable Superior Essex BBDN Part 04 001 34 Graybar Electric Cat 5 Shield Bond Connectors Hubbell BC285SB Graybar...

Page 33: ...lity Lightning Protectors Telemetry To From Network Manager PC Telemetry will be available in late 2002 Remote DC Voltage Sense is used in Multi Hub OJB installations only F Male Connector RG 6 Installer Responsibility DC Cable Supplies power to hub ODU s Screw terminal connection Upconverter WMTS Downstream Port Network Port Upstream Port 12 dB Tap 12 dB Tap DC Power Supply Output Output Remote V...

Page 34: ...m 6 AWG conductor between the equipment room ground bus and a common ground point adjacent to the hub antenna s unless the antenna mounting system consists of a known low impedance ground as a steel tower or monopole In the case of a single sector ARCi installation this point can be the antenna ground bolt or mounting bracket In a multi sector ARCi installation including an ARCi outdoor junction b...

Page 35: ...e the sample to the DC supply The DC power supply is then adjusted to provide 8 5 Vdc at the OJB The OJB will be available in mid 2002 ARCi has successfully tested the following power supply in the multi sector configuration To be determined Telemetry Telemetry is a low speed RS 485 signal implemented on a twisted pair between the hub antenna and the network manager computer in the equipment room ...

Page 36: ...s through a 12 dB tap and thence through the lightning protector to the cable to the ARCi hub antenna The 12 dB taps provide negligible attenuation to the signal passing through and copy of the signal 12 dB lower in level to the tap port These are utilized for inserting a spectrum analyzer for system set up and maintenance without disturbing the normal connections Receive Upstream Signal Path The ...

Page 37: ...nce Downstream Power Adjustment Procedure 1 Disconnect the IF cable at the input to the head end ODU transmitter and connect the cable to the input of a suitably calibrated spectrum analyzer 2 Set up the spectrum analyzer as follows Center Frequency IF frequency in use 481 571 MHz Span 100 MHz RBW 1 MHz VBW 30 KHz Vertical Scale linear 10 dB division Reference Level 40 dBmV Attenuation 20 dB Detec...

Page 38: ...g the actual output power level is to attach an RF power meter capable of measuring up to 6 GHz to the output of the hub transmitter through a 15 inch long RG142B U SMA SMA cable and then adjusting the IF level until the power indicated on the meter is 15 dBm However ARCi does not recommend that this adjustment be made in the field unless under the direct instruction of the ARCi factory Warning Th...

Page 39: ...nd Black Black Black 2 DC 8 5 VDC Red Red Red 3 Telemetry White Yellow White 6 Telemetry Green Green Black 4 5 reserved ARCi lab standard Internal Headers Cord Connector Rear View equals Panel Connector front View 1 4 3 2 1 5 6 AR105 Rx AR150 Tx n c 8 Vdc ground data data n c 8 vdc ground data data data data ground 8 Vdc not used 5 Vdc to SMA to SMA ...

Page 40: ...March 1 2002 Page F1 F Subscriber Inst l Details ...

Page 41: ...hub Grounding Device NOTE 1 Dual shield RG 6 coaxial cable Belden 9116 or equiv F Male connectors are supplied by installer 2 Items labeled inc are included with Subscriber Unit DC Inserter 10baseT LAN inc cable to PC Ground typical or hub of CATV NEC 810 2 820 33 to 820 42 Installer Responsibility 120 VAC Transformer Cord DC Power Supply inc Wireless Modem NOTE Coaxial cable length between DC Ins...

Page 42: ...s Up tilt or down tilt is accomplished by loosening the cap screws on the sides of the mounting assembly See Figures F1 and F2 The front face of the antenna must point in the direction of the system hub and have a clear view of the hub antenna1 Figure F1 Subscriber ODU Orientation 1 Subscriber installations located close to the hub installation may work successfully through nearby tree foliage but...

Page 43: ...lding entry point utilizing UV resistant tie wraps and staples or cable clamps as required Mount the grounding device e g Radio Shack 15 909C as near as practicable to the point of cable entry to the structure See Figure F3 Connect the grounding device to a suitable grounding electrode 2 Connect the RG 6 coaxial cable from the subscriber ODU and the RG 6 that enters the structure to the grounding ...

Page 44: ...F male cable to connect to the power supply The installer may choose to furnish a longer cable based on the installation specifics Modem WMU Place the modem where it will be used and attach the short cable on the power inserter labeled TO TV or TO MODEM see Figure F6 to the F connector on the rear of the modem Connect the separate modem wall mounted power supply included with the modem to the powe...

Page 45: ...een the power inserter and the modem Small pads of many values are available with F connectors to screw in line with the coaxial cable connection and they may be cascaded to sum their attenuation At the time of system set up it may be determined that such pads are required in installations less than a mile from the base station site to reduce excess signal ...

Page 46: ...March 1 2002 Page G1 G Link Budget Parameters ...

Page 47: ...elden 1189A calculate length limited by downstream 1 42 dB 100 ft 55 MHz Vyyo WMTS input spec dBmV 15 10 35 Downstream Vyyo WMTS output spec dBmV 20 40 Cadco upconverter input dBmV 38 45 Cadco upconverter output dBmV 50 60 65 IFL coax loss Belden 1189A calculate 15 dB max loss 4 57 dB 100 ft 550 MHz ARCi Hub IF input dBmV 50 ARCi Hub RF output dBm 16 ARCi Hub Tx antenna gain dBi 13 EIRP 30 dBm Pat...

Page 48: ... Encouraged To Forward Their Corrections and Comments To Rick Melzig Advanced Radio Cells Inc 910 Campisi Way 1F Campbell CA 95008 408 558 2763 direct 408 371 6934 fax rmelzig arcells com Revision March 1 2002 H Reader Feedback ...

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