ADC Telecommunications DVLRCS800 Digivance Long Range Coverage Solution 800 MHz Sys User Manual 75124

ADC Telecommunications Inc Digivance Long Range Coverage Solution 800 MHz Sys 75124

part 4

ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-3©2002, ADC Telecommunications, Inc.2.1 Turn-Up ProcedureUse the following procedure to turn-up the system:1. Temporarily disconnect the external alarm system or notify the alarm system provider thattesting is in progress.2. If turning-up multiple HU and RU systems that have not been configured for operationbefore, temporarily disconnect the CAN cables from the NET IN and NET OUT ports ofeach HU.3. Determine if the forward path composite input signal level at the Host Unit FORWARDRF IN port is between –10 and –40 dBm and adjust level by installing an externalattenuator if required. Refer to Section 2.3 for the calculation and adjustment procedure.4. Connect the EMS computer (if not already connected) to the SERVICE connector on theHU or STM front panel. If necessary, aseparate laptop computer loaded with the EMSsoftware can be temporarily connected and used to initially configure the system.5. Place the ON/OFF switch on the HU in the ON position (press I).6. Place the ON/OFF switch on the STM in the ON position (press I).7. Wait 6to 8seconds for the HU and the RU modules to initialize and then observe the LEDindicators on the HU, STM and LPA. Refer to Section 5 for the troubleshootingprocedures if the indicators do not respond as specified.8. Start up the Digivance EMS software program. The EMS main window will open asshown in Figure 4-1.Note: The EMS software should be installed on aPC-type computerand the PC’s COM port should be configured to interface with the HU. For informationabout installing the EMS software and configuring the PC’s COM port, refer to theDigivance Element Management System Software User Manual (ADCP-75-125).Note: By default, all HU’s and RU’s are programmed with the same site number andname. This can cause problems for the Digivance EMS if multiple HU’s with the same sitenumber and site name are networked together through the CAN interface. It is thereforeadvisable to temporarily disconnect the CAN interface cables from the HU until auniquesite number and name can be entered for each HU and its corresponding RU.HOST UNIT SPECTRUM TRANSPORT MODULE LINEAR POWER AMPLIFIERPOWER –Green AC POWER –Green FAIL –OffSTANDBY –Off STANDBY –Off SHUTDOWN –RedHOST UNIT –Green HOST UNIT –Green Digital Display –FORCEDSHUTDOWNREMOTE UNIT –Green STM –GreenDRIVE –Green, Yellow, or Red PA –GreenPORT 1/PORT 2 – Green VSWR –GreenPORT 3 – Green(diversity unit only) PORT 1/PORT 2 – GreenPORT 3 – Green(diversity unit only)FCC ID: F8I-DVLRCS800 - User Manual Part 4
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-4©2002, ADC Telecommunications, Inc.Figure 4-1. Digivance Element Management System Main Window9. Open the View drop down menu and connect to the Host and Remote pair by selecting“NotNamed/NotNamed”. The HOST Alarms display and the REMOTE Alarms displaywill open within the main window as shown in Figure 4-2.10. Download the system software to both the Host and the Remote unit. Refer to Section 2.2for details.Figure 4-2. Selecting Display TabsClick to view dropdown menuClicking on the tabs inthis list will open the cor-responding display.Host/Remote pairsite name
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-5©2002, ADC Telecommunications, Inc.11. Click on the HOST Config tab and on the REMOTE Config tab (see Figure 4-2). TheHOST Config display and the REMOTE Config display will open within the mainwindow.12. Enter the Site Name and Site Number for both the HOST and the REMOTE unit. Refer toSection 2.4 for details.13. Reconnect the CAN cables to the HU’s NET IN and NET OUT ports.14. Verify that no Major (except Major Extern Alarm) or Minor alarms are being reported ineither the HOST or REMOTE Alarm displays and that all alarm fields (except MajorExtern Alarm) are green.15. Click on the HOST RF tab (see Figure 4-2). The HOST RF display will open within themain window.16. Enter the Host Fwd Att (Forward Attenuation) values. This sets the forward input RF signallevel at the HU. Refer to Section 2.5 for details. By default, this value is set to 0dB. If theDRIVE LED on the HU front panel was red, it should turn green when this step is completed.17. Determine if the RF output power at the STM ANTENNA is at the correct level perchannel up to acomposite maximum of +44.5 dBm. Refer to Section 2.6 for details.18. Click on the REMOTE LPA tab (see Figure 4-2). The REMOTE PA display will openwithin the main window.19. Enter the Remote Fwd Att value. This adjusts the RF output signal level at the STMANTENNA port. Refer to Section 2.7 for details. By default this value is set to 0dB.20. Place the RF ON/OFF switch (on LPA front panel) in the ON position.21. Verify that the SHUTDOWN LED indicator (on LPA front panel) turns from red to off andthe Digital Display message changes from FORCED SHUTDOWN to NORMALOPERATION.22. Click on the HOST RF tab (see Figure 4-2). The HOST RF display will open within themain window.23. Enter the Host Rev Att (Reverse Attenuation), and Host Div Rev Att (Diversity ReverseAttenuation) values. This sets the reverse output RF signal levels at the HU. Refer toSection 2.8 for details.24. If adelay adjustment is required per the system design plan, enter the Host Fwd Delay,Host Rev Delay,and Host Div Rev Delay values. By default, the delay values are set to 0.Refer to Section 2.9 for details.25. If aseparate laptop computer loaded with the EMS software was used to initiallyconfigure the system, disconnect the laptop computer from the SERVICE connector on theHU front panel.Note: Each HU and RU pair will generally remain permanently connected to aPC-typedesktop computer loaded with the EMS software. When two or more systems areconnected together through the CAN interface, only one EMS computer is required tomanage the networked HU and RU systems. The EMS computer may be connected to theSERVICE port on any one of the HUs in the network.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-6©2002, ADC Telecommunications, Inc.26. Reconnect the external alarm system or notify the alarm system provider that the turn-upprocess has been completed.2.2 Download HU and RU System SoftwareThe HU’s and RU’s may require asystem software download to make them operational. Use thefollowing procedure to download the system software:1. Click on the HOST Prg Load tab and on the REMOTE Prg Load tab. The HOST PrgLoad display and the Remote Prg Load display will open within the EMS main windowas shown in Figure 4-3.Figure 4-3. HOST and REMOTE Prg Load Displays2. Click on the HOST Select button (see Figure 4-3). The Select Control Program Filewindow will open as shown in Figure 4-4.Browse until the folder where the ControlProgram files are located is selected and the software files are displayed in the window.Click to open Select ControlProgram window for HOSTClick to start down-load to HOST. Click to start down-load to REMOTE.Click to open SelectControl Program win-dow for REMOTE. Verify software versionbefore starting download.Verify software versionbefore starting download.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-7©2002, ADC Telecommunications, Inc.Figure 4-4. Select Control Program File Window3. Check the software version numbers shown in the Software Info section of the Prg Loaddisplay against the version numbers of the software files displayed in the Select ControlProgram File window. If files in the Select Control Program File window are alaterversion than those shown in the Prg Load display, proceed with the software download. Ifthe version numbers shown in the Software Info section are the same as the versionnumbers of the files in the Select Control Program File window, the software downloadis not required.4. Select the required file to download and click on the OK button.5. Click on the HOST Load button (see Figure 4-3)to start the download.6. Repeat steps 2through 4for the REMOTE.2.3 Determine Forward Path Input Signal LevelThe level of the composite RF input signal at the FORWARD RF IN port at the HU will varydepending on the type of BTS, the cable loss, and the number of channels present. To interfacewith the HU, the signal level of the composite forward path RF signal must be adjusted to fallwithin arange of –10 to –40 dBm.If the signal level is not within this range, it must be adjustedto fall within this level through the use of an external attenuator. Use the following procedure tomeasure and adjust the input RF signal level at the HU:1. Connect aspectrum analyzer or power meter to the forward path output port at the BTS.The required signal levels and test points are shown in Figure 4-5.2. Measure the RF level of asingle carrier, such as the control channel, in dBm. Make surethe resolution bandwidth of the spectrum analyzer or power meter is narrow enough tomeasure the power of the single 30 kHz channel only.3. Verify that all carriers are coming in at equal power at bandwidth and adjust to the samelevel if necessary.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-8©2002, ADC Telecommunications, Inc.4. Calculate the total composite signal power from the BTS using the following formula:Ptot = Pc+10Log N – (see Note)Where,Ptot is the total composite power in dBmPcis the power per carrier in dBm as measured in step 2, andNis the total number of channels.5. Determine the total cable loss that is imposed by the forward path coaxial cable that linksthe BTS to the HU and also any insertion loss imposed by splitters or combiners.6. Subtract the total cable loss and any insertion losses from the total composite powercalculated in step 4.7. Subtract –25 (the midpoint of the required range) from the value determined in step 6. Thedifference (which should be positive) equals the value of the external attenuator that isrequired to reduce the forward path signal level to fall within the required range. Thefollowing formula outlines the required calculations for steps 6and 7:Ptot – (Cable and insertion loss) –(–25) =Value of external attenuator required8. Select an attenuator that is as close to the value calculated in step 7as possible. Select avalue that will adjust the signal level of the composite input signal to fall within thespecified range.9. Install the external attenuator in the coaxial cable that is connected to the FORWARD RFIN port at the HU.10. Subtract the value of the external attenuator used in step 9from the total composite signalpower (Ptot)and record the result. This value will be required when setting the attenuationof the HU’s internal forward attenuator.Note: Subtract 16.23 dBm if calculating the composite power for aCDMA system.Note: If the input signal level is already within the required range of –10 to –40 dBm, thenno external attenuator is required.Caution: The Host Unit can be damaged if it is overdriven by the BTS. Always install anexternal protective attenuator at the Host Unit FORWARD RF IN port if the forward pathcomposite input signal level is greater than –10 dBm.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-9©2002, ADC Telecommunications, Inc.Figure 4-5. Signal Levels, Test Points, and AdjustmentsINPUT SIGNAL LEVEL(-10 to -40 dBmCOMPOSITE)HOST UNITPRIMARYANTENNALPAREMOTE UNITBASETRANSCEIVER STATION17000-CEXTERNALATTENUATORTRANS-MITTERSRECEIVERS0 to 30 dBATTENUATOR(HOST REV ATT)0 to 30 dBATTENUATOR(HOST FWD ATT)RF, OPTICS,AND CONTROL0 to 30 dBATTENUATOR(REMOTE FWD ATT)OPTICAL LINKRF, OPTICS,AND CONTROLDUPLEXERADJUSTMENTS TO INPUTSIGNAL LEVEL AS SET BY HOSTFORWARD PATH ATTENUATORADJUSTMENTS TO OUTPUTSIGNAL LEVEL AS SET BY HOSTREVERSE PATH ATTENUATORMAXIMUM OUTPUT SIGNALLEVEL AT STM ANTENNA PORTADJUSTMENTS TOOUTPUT SIGNAL LEVELAS SET BY THE REMOTEFORWARD ATTENUATOR
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-10©2002, ADC Telecommunications, Inc.2.4 Enter Site Name and Site NumberAll HU’s and RU’s are programmed with the same site name and site number. It is thereforenecessary to assign aunique site name and site number to the HU and RU before they can beconnected to the same CAN. Use the following procedure to assign aunique site name andnumber to each HU and RU system:1. Click on the HOST Config tab and on the REMOTE Config tab. The HOST Configdisplay and the REMOTE Config display will open within the EMS main window asshown in Figure 4-6.Figure 4-6. HOST and REMOTE Config Displays2. Right-click on the HOST Site Name field (see Figure 4-6). The Site Name pop-up screenwill open as shown in Figure 4-7.Enter aunique name for the HOST. The name may be upto 32 characters long and must not contain any spaces. The name may include numbers,punctuation, and upper or lower case letters and must always begin with aletter. Click onOK to close the screen and make the changes take effect.Figure 4-7. HOST Site Name Pop-Up ScreenHOST Site NumberHOST Site NameREMOTE Site Number(Entered automaticallywhen the HOST sitenumber is selected)REMOTE Site NameRight-Click on thepoint shown to openpop-up screen
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-11©2002, ADC Telecommunications, Inc.3. Right-click on the HOST Site Number (see Figure 4-6). The Site Number pop-up screenwill open. Enter any number between 1and 24 and then click on OK to close the screenand make the changes take effect.4. Check the REMOTE Site Number field (see Figure 4-6). The REMOTE Site Numberdoes not have to be entered. When the HOST Site Number is entered, the system willautomatically enter the same number for the REMOTE Site Number.5. Right-click on the REMOTE Site Name field (see Figure 4-6). The Site Name pop-upscreen will open. Enter aunique name for the REMOTE. The name may be up to 32characters long and must not contain any spaces. The name may include numbers,punctuation, and upper or lower case letters and must always begin with aletter. Click onOK to close the screen and make the changes take effect.6. Open the Tools menu at the top of the main window and then select Refresh Catalog tomake the new Host and Remote site names appear in the View menu.2.5 Enter Host Forward AttenuationThe HU internal forward path attenuator setting determines the maximum composite outputsignal level at the STM antenna port. The appropriate attenuation value for any particularsystem is based on the number of channels the system is transporting and the signal level of thecomposite forward path input signal input at the HU’s FORWARD RF IN port. The maximumoutput power that can be provided by the system is 44.5 dBm (28.8 watts). The total forwardpath gain that is provided by the system (with host and remote forward attenuators set to 0dB)is 84.5 dBm. Use the following procedure to set the forward path attenuation to provide themaximum composite output signal level:1. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 4-8.2. Right-click on the Host Fwd Att section of the display (see Figure 4-8). The Host FwdAtt pop-up screen will open as shown in Figure 4-9.3. Obtain the value of the total composite input signal level as determined in step 10 ofSection 2.3.4. Determine the appropriate value to enter for the Host forward path attenuator bysubtracting the required system output level (per system design plan) from 84.5 (the totalsystem gain) and then adding the composite input signal level. The result (see samplecalculation) is the amount of attenuation required.Atten Required =84.5 –(Required System Output Power) +(Composite Input Power)5. Enter the attenuation value and click OK to close the pop-up screen and to make thechanges take effect.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-12©2002, ADC Telecommunications, Inc.Figure 4-8. HOST RF DisplayFigure 4-9. Host Fwd Att Pop-Up Screen2.6 Determine Output Signal Level at STM Antenna PortThe RF output signal level should be measured at the STM ANTENNA port to verify thatmaximum composite signal level is at the required level. Use the following procedure todetermine the power level:1. Verify that RF ON/OFF switch on the LPA in the OFF position.2. Disconnect the antenna cable from the STM ANTENNA port.3. Connect aspectrum analyzer or RF power meter to the STM ANTENNA port. (Check theinput rating of the test equipment and insert aPAD if necessary.)Right-click hereto open Host FwdAtt pop-up screen
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-13©2002, ADC Telecommunications, Inc.4. Place the RF ON/OFF switch on the LPA in the ON position.5. Measure the RF level of asingle carrier, such as the control channel, in dBm. Make surethe resolution bandwidth of the spectrum analyzer or power meter is narrow enough tomeasure the power of the single 30 kHz channel only.6. Calculate the total composite signal power using the following formula:Ptot = Pc+10Log N – (see Note)Where,Ptot is the total composite power in dBmPcis the power per carrier in dBm as measured in step 2, andNis the total number of channels.7. Record the result calculated in step 6.8. Place the RF ON/OFF switch on the LPA in the OFF position.9. Disconnect the spectrum analyzer or RF power meter from the STM ANTENNA port.10. Re-connect the antenna cable to the STM ANTENNA port.2.7 Enter Remote Forward AttenuationThe STM internal forward path attenuator setting is used to increase or reduce the power levelof the composite output signal level at the STM antenna port. The maximum composite outputsignal level at the STM antenna port is set using the Host internal forward attenuator (seeSection 2.4). However, component variations may result in the output power at the STMantenna port being slightly above or below the required power per channel. If this is the case,the STM forward attenuator may be used in conjunction with the Host forward attenuator to addor remove attenuation to produce the required output signal level. If less power is required, theSTM forward attenuator may be used to reduce the power level. The default setting is 0dB. Usethe following procedure to change the STM forward attenuation:1. Click on the REMOTE LPA tab. The REMOTE LPA display will open within the EMSmain window as shown in Figure 4-10.Note: Subtract 16.23 if calculating the composite power for aCDMA system.Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in afixed location that provides at least 6meters(20 feet) of separation from all persons.
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-14©2002, ADC Telecommunications, Inc.Figure 4-10. REMOTE LPA Display2. Check the level of the RF output signal (as determined in Section 2.6)against the systemdesign plan specifications. Table 4-1 shows the output signal level required to provide 5watts per channel for systems with 1to 5channels. The maximum output signal levelpermitted for the system is 44.5 dBm (28.8 watts).3. Determine if more or less attenuation is required to produce the required output signal level.4. Right-click on the Remote Fwd Att section of the display (see Figure 4-10). The RemoteFwd Att pop-up screen will open as shown in Figure 4-11.5. Enter the required attenuation value and click OK to close the pop-up screen and to makethe changes take effect.Table 4-1. Composite Output Signal LevelsNUMBER OF CHANNELSOUTPUT SIGNAL LEVEL REQUIRED TO PROVIDE 5 WATTS PER CHANNEL 137dBm240dBm342dBm443dBm544dBmWhen there are six or more channels, eachchannel will always be less than 5watts sincethe system has amaximum power output of28.8 watts (44.5 dBm).Right-click here toopen the Remote FwdAtt pop-up screenRF output signal level
ADCP-75-124 • Issue B • April 2002 • Section 4: OperationPage 4-15©2002, ADC Telecommunications, Inc.Figure 4-11. Remote Fwd Att Pop-Up Screen6. Verify that the appropriate RF output signal level appears in the RF Pwr-VSWR Lowsection (see Figure 4-10). This is primarily areference value and should not take the placeof external test equipment when determining the power level of the composite RF outputsignal. Depending on the modulation type and number of channels, the EMS software mayreport apower level that is higher or lower than the actual RF output signal.2.8 Enter Host Reverse AttenuationThe level of the RF signal that should be input to the BTS will vary depending on the type ofBTS, the receive distribution, and the number of channels present. To interface with the BTS,the reverse path signal level must be adjusted to provide the signal level required by the BTS.The HU provides from 0dB to +30 dB of gain in the reverse path. Use the following procedureto set the reverse path gain:1. Check the BTS manufacturer’s specifications to determine the composite signal levelrequired at the BTS reverse path input port.2. Determine the overall gain and loss imposed on the signal by the antenna, antenna cable,and by the cables that connect the HU to the BTS.3. Determine the amount of gain required to raise the reverse path signal to the level requiredat the BTS.4. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 4-12.Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in afixed location that provides at least 6meters(20 feet) of separation from all persons.

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