Alcatel Canada 39T28A03A22A Alcatel 7390 LMDS Multiservice Broadband Wireless User Manual 3cc12426aaaaTQbja01

Alcatel Canada Inc Alcatel 7390 LMDS Multiservice Broadband Wireless 3cc12426aaaaTQbja01

Base Station User Manual 2 of 14

3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 41/346104Figure 10 – Antenna, X-Pol RBS Tx/X-Pol RBS Rx and captive bolts5. As shown in Figure 11, place a lock washer and a flat washer on each of the four RF wave guidescrews, and insert and tighten each of the four screws to 0.56 Nm (5 in.-lb) torque.Figure 11 – Installing the RF wave guide screws6. Ensure that each of the captive screws and RF wave guide screws are tightened to the correcttorque, and that there is no gap between the radio and antenna.AntennaCaptive bolt(hidden)O-ringX-Pol RBS TXX-Pol RBS RxAntennaRFwave guidescrewFlatwasherLockwasherX-Pol RBS TxX-Pol RBS RxCaptive bolts
42/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011042.5.3 – Attaching a mounting plate and antenna to a poleThe following parts are required:– an antennna with an attached X-Pol RBS Tx or X-Pol RBS Rx,– a single-antenna mounting plate and mounting hardware (provided with the antenna), or a dual-antenna mounting plate and mounting hardware (part number 90-7385-02).The BS mounting hardware is composed of the following:– downtilt adjustment screws,– flat washers,– lock washers,– antenna bolts,– U-bolts and U-bolt brackets,– 17 mm nuts.The dual antenna mounting plate can accommodate either one or two antennas. Single-antennaconfigurations are used for non-redundant X-Pol RBS Tx or X-Pol RBS Rx operation, and double-antenna configurations are used for redundant X-Pol RBS Tx or X-Pol RBS Rx operation.To connect a mounting plate and antenna to a pole1. Attach the mounting plate to the pole using the pole mounting hardware, as shown in Figure 12,where a single antenna mounting plate is shown.1. Thread the downtilt adjustment screw(s) into the mounting plate until the hole in the adjustmentscrew plate aligns with the antenna bolt channel at the top of the mounting plate.2. Connect the top of the mounting plate to the pole using a U-bolt, U-bolt bracket, washers andnuts.3. Tighten the two nuts until the top of the mounting plate is held securely to the pole, but is stillshifts enough from side-to-side to allow the bottom U-bolt to be inserted.4. Connect the bottom of the mounting plate to the pole using a U-bolt, U-bolt bracket, washers andnuts.5. Tighten all four U-bolt nuts to 54.4 Nm, ± 2.7 Nm (40 ft-lb, ± 2 ft-lb) of torque.Warning - If an antenna is attached to a mounting plate on a pole before an X-Pol RBS Txor X-Pol RBS Rx is attached to the antenna, the RF wave guide and screws must be coveredwith weatherproof tape to protect the antenna from moisture.Caution - Do not install an X-Pol RBS Tx and an X-Pol RBS Rx on the same mounting plate,otherwise the X-Pol RBS Tx transmit signal will interfere with the X-Pol RBS Rx receivesignal.Caution - Mounting poles should be grounded to a suitable lightning discharge ground.
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 43/346104Figure 12 – Connecting the mounting plate to the pole2. Connect the antenna to the mounting plate, as shown in Figure 13.DowntiltadjustmentscrewScrewbracketU-boltU-bolt bracketNut LockwasherFlatwasherMounting poleMounting plate
44/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 13 – Connecting the antenna to the mounting plate1. Thread a nut roughly 10 mm (3/4 in.) onto each of the two antenna bolts.2. Connect the top of the antenna to the top of the mounting plate by inserting one of the antennabolts through a lock washer, a flat washer, the adjustment screw plate, antenna bolt channel onthe mounting plate, a spacer and upper bolt hole on the antenna. Add a flat washer, a lockwasher and a nut to the antenna side of the antenna bolt, and tighten both nuts to 54.4 Nm,± 2.7 Nm (40 ft-lb, ± 2 ft-lb) of torque.3. Connect the bottom of the antenna to the bottom of the mounting plate by inserting the remainingantenna bolt through a lock washer, a flat washer, the antenna bolt hole on the mounting plate,a spacer and the lower bolt hole on the antenna. Add a flat washer, a lock washer and a nut tothe antenna side of the antenna bolt, and tighten both nuts to 54.4 Nm, ± 2.7 Nm (40 ft-lb, ± 2 ft-lb) of torque.To mount a second antenna on a dual antenna mounting plateA second antenna can be attached to a dual antenna mounting plate, as shown in Figure 14.Nut Lock washerFlat washerSpacerAntennabolt 10mm(3/4 in.)NutAntennaLock washerFlat washerSpacerAntennabolt and nut
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 45/346104Figure 14 – Mounting a second antenna1. Thread a nut roughly 10 mm (3/4 in.) onto each of the two antenna bolts.2. Connect the top of the antenna to the top of the mounting plate by inserting one of the antenna boltsthrough a lock washer, a flat washer, mounting plate antenna bolt channel, the adjustment screwplate, a spacer and the upper antenna bolt hole. Add a flat washer, a lock washer and a nut to theantenna side of the antenna bolt, and tighten both bolts to 54.4 Nm, ± 2.7 Nm (40 ft-lb, ± 2 ft-lb) oftorque.3. Connect the bottom of the antenna to the bottom of the mounting plate by inserting the remainingantenna bolt through a lock washer, a flat washer, the lower mounting plate antenna bolt hole, aspacer and lower antenna bolt hole. Add a flat washer, a lock washer and a nut to the antenna sideof the antenna bolt, and tighten both bolts to 54.4 Nm, ± 2.7 Nm (40 ft-lb, ± 2 ft-lb) of torque.To ground the X-Pol RBS Tx or X-Pol RBS RxThe following parts and supplies are required:– an adequate length of ground conductor,– an M8 ring lug,– dielectric paste.1. Measure a length of ground conductor sufficient to run from the X-Pol RBS Tx or X-Pol RBS Rx tothe nearest suitable ground point. The required diameter, metal type and physical type of the groundconductor may vary according to local regulations. Consult local electrical authorities for information. 2. Connect an uninsulated M8 ring lug connector securely to one end of the ground conductor using asuitable mechanical connection method.3. Apply an appropriately rated dielectric paste liberally to both sides of the ring lug.4. Connect the ring lug to the X-Pol RBS Tx or X-Pol RBS Rx case ground connection point using theground bolt, as shown in Figure 15. Tighten the bolt to 13.5 Nm (10 ft-lb) of torque.Antenna boltand nutLock washerFlat washerSpacerAntenna 2Antenna 1
46/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011045. Connect the remaining end of the ground conductor to a suitable lightning discharge ground, usinga mechanical connection method that is approved by local electrical authorities.Figure 15 – X-Pol RBS Tx/X-Pol RBS Rx ground connection locationTo adjust the antenna downtiltThe antenna downtilt is adjusted to optimize cell performance. By increasing the downward angle of theX-Pol RBS Tx and X-Pol RBS Rx antenna (see Figure 17), the area of sector coverage decreases. Bydecreasing the downward angle of the X-Pol RBS Tx and X-Pol RBS Rx antenna, the area of sectorcoverage is increased. The specific downtilt required for each X-Pol RBS Tx and X-Pol RBS Rx iscalculated through detailed cell planning. Figures 16 and 17 show the results of downtilt adjustment.AntennaTo groundBoltWasherCircularlugGroundwireX-PolX-PolRBS TxRBS RxX-Pol RBS TxX-Pol RBS Rx
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 47/346104Figure 16 – Minimal downtiltFigure 17 – Increased downtiltX-Pol RBS TxBTS Area ofservice coverageDowntiltadjustmentscrewArea ofservice coverage
48/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011041. Place a digital level on the top of the X-Pol RBS Tx or X-Pol RBS Rx antenna (see Figure 18).2. Loosen the two antenna bolts to allow free movement of the antenna.3. While observing the digital level, adjust the downtilt adjustment screw (see Figure 18) until thedowntilt meets the angle required by cell planning analysis.Figure 18 – Antenna downtilt adjustment screw4. Tighten the two antenna bolts to 54.4 Nm, ± 2.7 Nm (40 ft-lb, ± 2 ft-lb) of torque.5. Check the digital level to ensure that the antenna is adjusted to the correct downtilt angle. If the digitallevel indicates an incorrect downtilt angle, repeat the procedure.2.5.4 – Replacing an X-Pol RBS Tx, X-Pol RBS Rx or antennaWhen X-Pol RBS Txs, X-Pol RBS Rxs or antennas malfunction, they must be serviced by removing themalfunctioning unit (X-Pol RBS Tx/X-Pol RBS Rx or antenna), and then replacing it with a new unit. Themalfunctioning unit should be packaged and sent to Alcatel for repair.X-Pol RBS Txs and X-Pol RBS Rxs must not be replaced or serviced while still connected to antennasthat are mounted on a pole. Disconnect power from the IF cables by switching off the appropriatebreaker, and disconnect the IF and RS-422 cables from the X-Pol RBS Tx or X-Pol RBS Rx. Removethe antenna from the mounting plate before any replacement or servicing.To replace an X-Pol RBS Tx, X-Pol RBS Rx or antenna1. To remove –48 V dc power from the X-Pol RBS Tx or X-Pol RBS Rx IF cable, switch off theappropriate circuit breaker on the power distribution system.Digital levelAntenna boltAntenna downtiltadjustment screwPoleAntennabolt
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 49/3461042. Remove the antenna from the pole:1. If an X-Pol RBS Tx or X-Pol RBS Rx is attached to the antenna, disconnect all IF and RS-422cable connectors from the X-Pol RBS Tx or X-Pol RBS Rx, and seal the cable connector endsusing butyl tape.Label the IF and RS-422 cables so that they are easily identified when the X-Pol RBS Tx or X-Pol RBS Rx is reattached, and secure them to the mounting pole.Remove the ground bolt from the X-Pol RBS Tx or X-Pol RBS Rx, remove the ground strap, andreplace the ground bolt to ensure that it is not lost during the procedure.2. Support the antenna and remove the upper and lower nuts and washers that secure the antennato the mounting plate. Do not loosen or remove the other upper and lower nuts and washers thatsecure the antenna mounting bolts to the mounting plate.3. Remove the antenna from the mounting plate.3. Disconnect the X-Pol RBS Tx or X-Pol RBS Rx from the antenna:1. Remove the RF wave guide screws and store them where they can be re-used when an X-PolRBS Tx or X-Pol RBS Rx is reattached to the antenna.2. Unbolt the captive bolts that fasten the X-Pol RBS Tx/X-Pol RBS Rx to the antenna, and removethe X-Pol RBS Tx or X-Pol RBS Rx from the antenna. 3. Remove the O-ring, and store it where it can be re-installed when the X-Pol RBS Tx or X-PolRBS Rx is reattached to the antenna.4. Replace the malfunctioning X-Pol RBS Tx, X-Pol RBS Rx or antenna with a new unit, and connectthe X-Pol RBS Tx or X-Pol RBS Rx to the antenna again. See section 6.2 for information andprocedures.5. Attach the antenna to the mounting plate. See section 6.3 for information and procedures.6. Reconnect the IF cables, RS-422 cables and ground connection.7. Use a digital level to verify that the appropriate antenna downtilt is still set. See procedure 6-5.8. Reconnect the –48 V dc power to the IF cable at the power distribution system.2.6 – Installing Bias-Ts and surge protectorsBias-Ts are installed on 12:2 Combiner/Splitters, and require that a surge arrester is installed on eachBias-T DC IN connector. Each surge protector must be grounded to the system chassis ground.To install Bias-Ts and surge protectors1. To correctly connect a surge protector to a Bias-T, connect the male BNC connector on the surgeprotector to the DC IN connector on the Bias-T, as shown in Figure 19.Warning - Do not disturb the antenna downtilt hardware during this procedure. Note 1 - BS components and cables must be installed and serviced by trained personnel whoare experienced in the local, national and civil electrical and safety regulations of the areawhere the equipment is being installed.Some areas require that only licensed individuals may install and service equipment. Consultappropriate local authorities prior to installation.Note 2 - All IF cabling must meet local safety and building code requirements.
50/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 19 – Connecting the surge protector2. Place the 12:2 Combiner/Splitter assembly in a permanent location near the MainStreetXpress36170 shelf, within reach of the SMA cables that connect between the IBS card and the 12:2Combiner/Splitter. 3. Position the Bias-T RF IN connector on one of the two Combiner/Splitter Primary/Redundant radioconnectors, as shown in Figure 20.4. Tighten the coupling on the RF IN connector until the Bias-T is firmly connected and does not rotate. 5. Install 50 W terminators on all unconnected 12:2 Combiner/Splitter connectors. Figure 20 – Connecting the Bias-T to the Combiner/SplitterDC OUTDC IN Surge protectorRF INBias-TSide viewFront view12:2Combiner/SplitterSurge protector Bias-T Bias-TUsed for redundantX-Pol RBS TxX-Pol RBS RxSurge protector
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 51/346104To connect the surge protector ground wire1. Measure a length of insulated copper wire that is long enough to run from the closest safety groundpoint to the surge protector.2. Add a ring lug to one end of the ground wire, and connect it to the surge protector, as shown in Figure21.Figure 21 – Surge protector ground connection3. Connect the unconnected end of the ground wire to the building ground.2.6.1 – Replacing the gas discharge tube in a surge protectorThe gas discharge tube should be replaced by qualified service personnel on a regular basis asrecommended by the manufacturer, using an exact replacement from the original manufacturer. Thesurge protector carries –48 V dc that must be turned off before replacement.To replace the gas discharge tube1. Remove the dc power to the surge protector at the power source. Do not remove power bydisconnecting the BNC connector on the Bias-T power cable because reconnecting live dc voltagecan cause sparking and damage the connector.2. Disconnect the Bias-T power cable and remove the surge protector from the Bias-T.3. Remove the screw cap (see Figure 22) and the gas discharge tube. Inspect the surge protector fordamage. If there is damage, replace the surge protector and proceed to step 5; if not, proceed toDanger - Do not replace the gas discharge tube during storm activity.Warning - If dc power is not disconnected at the dc power supply, sparking may occur whenconnecting any connector in the dc voltage path (surge protector, Bias-T, IF cable, X-PolRBS Tx/X-Pol RBS Rx) when the connector has dc voltage on it. Sparking may damage theconnector and affect service quality.Ring lug Surge protectorWasherGround screwGround wire
52/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104step 4.Figure 22 – Screw cap4. Replace the gas discharge tube; see Figure 23.1. Hold the screw cap upside down.2. Place the discharge tube in the cap.3. Position the surge protector over the screw cap.4. Screw the cap into the surge protector as far as possible by hand, then tighten the cap with thescrewdriver.Figure 23 – Replacing a gas discharge tube in a surge protector5. Connect the surge protector to the Bias-T.6. Connect the Bias-T power cable to the surge protector.7. Apply the dc power.2.7 – Installing Type N lightning arrestersType N lightning arresters must be secured to a copper grounding plate using mounting brackets, thenconnected to IF cables.To install a lightning arrester1. Attach a mounting bracket to the copper grounding plate for each lightning arrester used in thesystem, as shown in Figure 24.Note 1 - BS components and cables must be installed and serviced by trained personnel whoare experienced in the local, national and civil electrical and safety regulations of the areawhere the equipment is being installed.Some areas require that only licensed individuals may install and service equipment. Consultappropriate local authorities prior to installation.Note 2 - All IF cabling must meet local safety and building code requirements.Screw capGas discharge tubeScrew cap
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 53/346104Figure 24 – Attach the mounting brackets to the copper grounding plate2. Install each lightning arrester in a mounting bracket, as shown in Figure 25. Figure 25 – Connecting the lightning arrester to the adapter bracket3. Connect the IF cables to the lightning arrester, as shown in Figure 26.3/8 in.bronze boltType Nmounting bracketCoppergrounding plateCopper washerBronze lockwasher3/8 in.bronze nutMounting bracketType Nlightning arresterCoppergrounding plateWasherNut
54/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 26 – Installed and connected lightning arresterReplacing the gas discharge tube in a Type N lightning arresterThe gas discharge tube should be replaced by qualified service personnel on a regular basis asrecommended by the manufacturer, using an exact replacement from the original manufacturer. Thelightning arrester carries –48 V dc that must be turned off before replacement.To replace the gas discharge tube1. Remove the dc power to the lightning arrester at the power source. Do not remove power bydisconnecting one of the connectors in the dc voltage path, because reconnecting live dc voltagecan cause sparking and damage the connector.2. Remove the bolt cap from the lightning arrester; see Figure 27.Figure 27 – Bolt capDanger - Do not replace the lightning arrester during storm activity.Warning - If dc power is not disconnected at the dc power supply, sparking may occur whenconnecting any connector in the dc voltage path (surge protector, Bias-T, IF cable, X-PolRBS Tx/X-Pol RBS Rx) when the connector has dc voltage on it. Sparking may damage theconnector and affect service quality.Copper grounding plateMounting bracketType N lightning arresterBroadband cableBolt cap
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 55/3461043. Inspect the lightning arrester for damage. If there is damage, replace the lightning arrester (seesection 8.1); if not, proceed to step 4.4. Replace the gas discharge tube; see Figure 28.1. Use the pliers to pull the discharge tube out of the cap.2. Push the replacement discharge tube into the cap.3. Screw the cap into the lightning arrester by hand, then tighten the cap with the wrench.5. Apply the dc power.Figure 28 – Replacing a gas discharge tube in a Type N lightning arrester2.8 – BS cables connectionsFigure 29 shows a non-redundant X-Pol RBS Tx/X-Pol RBS Rx BS configuration (one X-Pol RBS Tx andone X-Pol RBS Rx). A fully installed BS uses the following five cable types:– RS-422 data cables (indoor and outdoor runs),– SMA jumper cables (indoor),– IF cables (indoor, outdoor and outdoor jumper),– synchronization cables (outdoor),– Bias-T (–48 V dc) power supply cable.Tables 14 through 9-5 list the cables and connectors identified in Figure 29.Figure 30 shows a redundant X-Pol RBS Tx/X-Pol RBS Rx BS configuration. A redundant BSconfiguration has two X-Pol RBS Txs and one or two X-Pol RBS Rxs, with additional passive devicesand cables. The redundant Tx (or Rx) RS-422 data cable attaches to the IBS. The redundantsynchronization cables are connected by a 2:1 Combiner/Splitter.Caution - Outdoor BS IF cables must be grounded via the outer conductor every 50 m(164 ft). Additionally, the section of cable that runs up the tower or pole must be groundedat the top and bottom of the tower or pole cable run. Use the cable grounding kitsrecommended by the cable manufacturer.Note - All outdoor cable connections should be covered with cold shrink tubing or bewrapped in butyl electrical tape to protect against moisture.Bolt capGas discharge tube
56/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 29 – Non-redundant X-Pol RBS Tx/X-Pol RBS Rx BS components and cables
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 57/346104Figure 30 – Redundant X-Pol RBS Tx/X-Pol RBS Rx BS synchronization cables
58/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Table 14: RS-422 data cables and connectorsNote: Alcatel part number 90-6815-01 (Stewart RJ45 connector)LEMO USA part number FGG.1K.304.CLCC.60Z (connector strain relief part numberGMA.1B.065.DN)Table 15: SMA jumper cable and connectorsTable 16: IF cables and connectorsTable 17: Synchronization cable and connectorsTable 18: Bias-T power supply cable and connectorsCable rating Description Connectors Recommended cablesIndoor IBS-TLX connector to RS-422 lightning arrester RJ45(1) - RJ45(1) Delco 398087POutdoor RS-422 lightning arrester to X-Pol RBS Tx/X-Pol RBS Rx RJ45(1) - LEMO(2) Delco 398087Cable rating Description Connectors Recommended cablesIndoor IBS-TLX card toTx 12:2 Combiner/SplitterIBS-TLX card toRx 12:2 Combiner/SplitterSMA(M) - SMA(M) 90-6656-01 (3 m [10 ft])90-6656-02 (6 m [20 ft])Cable rating Description Connectors Recommended cablesIndoor Bias-T to Type N lightning arres-ter N(M) - N(M) See Table 20Outdoor (main)Type N lightning arrester to IF jumper cable N(M) - N(M) See Table 20Outdoor (jumper)IF jumper cable (1 m [3 ft]) to X-Pol RBS Tx/X-Pol RBS Rx N(F) - N(M)Times Microwave LMR-400 (part number FT-400DB/3/NM/NF)Cable rating Description Connectors Recommended cablesOutdoor X-Pol RBS Tx to X-Pol RBS Rx 100 MHz REF connector See Table 23 LDF2-50Cable rating Description Connectors Recommended cablesIndoor Surge protector to –48 V dc dis-tribution system BNC(F) - ring lugs 90-6518-01
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 59/3461042.8.1 – Selecting BS IF cablesWhen selecting BS IF cables, the main concern is the IF cable signal loss of the indoor and outdoor cableruns.The system requires that all the components in the IF signal path between the IBS card and the X-PolRBS Tx/X-Pol RBS Rx (cables, connectors and equipment) provide a fixed decibel loss in each of thedownstream and upstream directions. System performance may be affected if the fixed loss is not met.The downstream losses must total 27 dB ±1 dB at the upper frequency of the IF band used for thedownstream signal. The upstream losses must total 24 dB ±1 dB at the upper frequency of the IF bandused for the upstream signal.Table 19 can be used to determine how much loss the IF cables must contribute in order to achieve thefixed loss requirement. The table lists each component and gives its loss value at 2050 MHz downstreamand 900 MHz upstream. It is assumed that the installation uses a 3 m (10 ft) long SMA cable. The lastrow in the table shows that the IF cables, including connectors, must contribute the following losses tothe system at the frequencies used in this example:– 7.37 dB in the downstream path at 2050 MHz,– 4.37 dB in the upstream path at 900 MHz.Use the following formulas along with the cable and connector loss values given in Table 20 to determinethe types and lengths of cable that meet the fixed loss requirements and that are suitable for theinstallation. Formula 2 accounts for four connectors (two connectors for each of the indoor- and outdoor-rated cables). Formula 1: Calculation of dB loss for a cable segmentLosssegment = Lengthsegment X (dB loss/distancesegment ¸ 100)where Losssegment is the loss of the indoor or outdoor segment (in dB)Lengthsegment is the length of the segment (in m [ft])dB loss/distance is the loss characteristic of the segment (dB/100 m [dB/100 ft])Formula 2: Calculation of total dB loss for the cable runLosstotal = Lossi + Losso + (2 X Lossi connector) + (2 x Losso connector) = 7.37 dB (at 2050 MHz downstream) = 4.37 dB (at 900 MHz upstream)Note - The loss characteristics of all components used in the examples in this section arebased on the worst-case frequencies of 2050 MHz downstream and 900 MHz upstream.Refer to the manufacturers’ specifications when designing systems that use otherfrequencies.Note 1 - Before the cable is installed, ensure that the correct cable types have been chosenfor the required lengths and losses. Otherwise, new cables may need to be installed.Note 2 - Non-plenum rated cables can be run through plenum space, if a suitable fireproofplenum conduit is used.
60/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104where Losstotal is the loss of the IF cable run in dB/100 m (dB/100 ft) Lossi is the loss of the indoor-rated cable (in dB)Losso is the loss of the outdoor-rated cable (in dB)Lossi connector is the loss of the indoor cable connector (in dB)Losso connector is the loss of the outdoor cable connector (in dB)After all components have been installed and connected, system loss measurements and calibrationmust be made to determine the actual losses. If the measured loss is greater than the required loss,different cable types may be necessary. If the measured loss is less than the required value, attenuatorsshould be added between the 12:2 Combiner/Splitter and the Bias-T. See chapter 11 for measurementand calibration procedures.Table 19: BS passive device and IF cable lossesNote: (1) Measured at 2050 MHz.(2) Measured at 900 MHz.(3) The values given are for the sum of the indoor and outdoor cable runs, excluding the outdoorIF jumper cable. The values include four connectors, two for the indoor cable and two for theoutdoor cable.BS componentTotal downstream loss (1) (dB)Total upstream loss (2) (dB)Fixed loss requirement 27 24Component SMA jumper cable (3 m [10 ft]) 1.0 1.0Tx 12:2 Combiner/Splitter 17.10 N/ARx 12:2 Combiner/Splitter N/A 17.10Bias-T 1.03 1.03Lightning arrester 0.20 0.20Outdoor IF jumper cable (including con-nectors)0.3 0.3Total loss due to all components except IF cables 19.63 19.63Loss available for IF cable(3) (fixed loss requirement minus total component loss) 7.37 4.37
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 61/346104Table 20: IF cable loss characteristics, types and connectorsNote: Measured at 2050 MHz.Measured at 900 MHz.2.8.2 – Marking IF cables for identificationIF cables must be marked to indicate which X-Pol RBS Tx or X-Pol RBS Rx each cable connects to. Itis recommended that you use bands of electrical tape to identify each cable:– the tape color (blue, red, green or yellow) indicates the sector,– the number of colored bands of tape indicates the X-Pol RBS Tx or X-Pol RBS Rx number in thesector,– a white band on either side of the colored bands indicates that the IF cable connects to a redun-dant X-Pol RBS Tx or X-Pol RBS Rx.Table 21 describes the electrical tape recommended for marking IF cables. Cable typeConnector Loss (dB/100 m [dB/100 ft])RatingType Loss (dB) Downstream (1) Upstream (2)IndoorHeliax FSJ1-50A F1PNM 0.05 29.03 (8.85) 18.59 (5.66) IndoorHeliax FSJ2-50 F2PNM 0.05 19.99 (6.09) 12.65 (3.86) IndoorHeliax FSJ4-50 BF4PNM 0.05 17.76 (5.39) 11.07 (3.38) IndoorHeliax HL4-RP-50 H4PNM 0.08 12.22 (3.91) 8.24 (2.51) Indoor/plenumHeliax HJ5-50 H5PNM 0.08 6.07 (1.88) 3.92 (1.19) Indoor/plenumTimes Microwave LMR-400 Ultra Flex TC-400-NMH 0.10 23.82 (7.26) 15.39 (4.69) IndoorTimes Microwave LMR-600-LLPL TC-600-NMH 0.10 13.09 (3.99) 8.45 (2.57) Plenum/outdoorTimes Microwave LMR-900-FR EZ-900-NMH 0.10 8.76 (2.67) 5.56 (1.69) IndoorOutdoorHeliax LDF2-50 L2PNM 0.05 16.98 (5.18) 10.88 (3.32) OutdoorHeliax LDF4-50A L4PNM 0.05 11.48 (3.50) 7.23 (2.20) OutdoorHeliax LDF5-50A L5PNM 0.05 6.56 (2.00) 4.04 (1.23) OutdoorHeliax LDF6-50 L6PNM 0.05 4.83 (1.47) 2.98 (0.91) OutdoorCommScope CR50-540-PE CR540NM 0.10 10.4 (4.16) 6.59 (2.01) OutdoorCommScope CR50-1070-PE CR1070NM 0.10 5.90 (1.80) 3.61 (1.10) OutdoorTimes Microwave LMR-600-LLPL TC-600-NMH 0.10 13.09 (3.99) 8.45 (2.57) Plenum/outdoor
62/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Table 21: Electrical tape product informationTable 22 describes how colored bands are used to identify an IF cable.Electrical tape attribute DescriptionName 35 Scotch Brand vinyl electrical tape for color codingThickness 0.18 mm (7 mil)Width 19 mm (31/44 in.)Colors Blue, green, red, white, yellowManufacturer 3M Electrical Products DivisionTelephone: 1-800-245-3573http://www.3m.com/elpd/Ordering code 35 Blue (UPC# 10836)35 Red (UPC# 10810)35 Green (UPC# 10851)35 Yellow (UPC# 10844)35 White (UPC# 10828)Standards requirements UL 510, CSA standard C22.2SectorX-Pol RBS Tx or X-Pol RBS Rx numberNumber and color of bands (primary X-Pol RBS Txor X-Pol RBS Rx)Number and color of bands (Redundant X-Pol RBS Txor X-Pol RBS Rx)Sector A X-Pol RBS Tx #1 1 blue band 1 blue band, 1 white bandX-Pol RBS Rx #1 2 blue bands 2 blue bands, 1 white bandX-Pol RBS Tx #2 3 blue bands 3 blue bands, 1 white bandX-Pol RBS Rx #2 4 blue bands 4 blue bands, 1 white bandX-Pol RBS Tx #n 2n-1 (1) blue bands 2n-1 (1) blue bands, 1 white bandX-Pol RBS Rx #n 2n (2) blue bands 2n (2) blue bands, 1 white bandSector B X-Pol RBS Tx #1 1 red band 1 red band, 1 white bandX-Pol RBS Rx #1 2 red bands 2 red bands, 1 white bandX-Pol RBS Tx #2 3 red bands 3 red bands, 1 white bandX-Pol RBS Rx #2 4 red bands 4 red bands, 1 white bandX-Pol RBS Tx #n 2n-1 (1) red bands 2n-1 (1) red bands, 1 white bandX-Pol RBS Rx #n 2n (2) red bands 2n (2) red bands, 1 white band
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 63/346104Table 22: Color codes for IF cablesNote: (1)For example, if n (X-Pol RBS Tx #) is 5, the number of bands is (2x5)-1, which equals 9 colo-red bands. A white band is added if the cable attaches to a redundant X-Pol RBS Tx.(2) For example, if n (X-Pol RBS Rx #) is 5, the number of bands is (2x5), which equals 10 colo-red bands. A white band is added if the cable attaches to a redundant X-Pol RBS Rx.Figure 31 shows an example of a cable marked for identification. According to the bands on the cable(3 red bands and 1 white band), the cable connects to the second redundant X-Pol RBS Tx in sector B.Figure 31 – IF cable marked for identificationAll IF cables should be marked for identification close to where a cable connector is installed. To simplifythe installation of IF cables, mark the cables as they are being installed at the following points: – where a cable attaches to the 12:2 Combiner/Splitter,Sector C X-Pol RBS Tx #1 1 green band 1 green band, 1 white bandX-Pol RBS Rx #1 2 green bands 2 green bands, 1 white bandX-Pol RBS Tx #2 3 green bands 3 green bands, 1 white bandX-Pol RBS Rx #2 4 green bands 4 green bands, 1 white bandX-Pol RBS Tx #n 2n-1 (1) green bands 2n-1 (1) green bands, 1 white bandX-Pol RBS Rx #n 2n (2) green bands 2n (2) green bands, 1 white bandSector D X-Pol RBS Tx #1 1 yellow band 1 yellow band, 1 white bandX-Pol RBS Rx #1 2 yellow bands 2 yellow bands, 1 white bandX-Pol RBS Tx #2 3 yellow bands 3 yellow bands, 1 white bandX-Pol RBS Rx #2 4 yellow bands 4 yellow bands, 1 white bandX-Pol RBS Tx #n 2n-1 (1) yellow bands 2n-1 (1) yellow bands, 1 white bandX-Pol RBS Rx #n 2n (2) yellow bands 2n (2) yellow bands, 1 white bandSectorX-Pol RBS Tx or X-Pol RBS Rx numberNumber and color of bands (primary X-Pol RBS Txor X-Pol RBS Rx)Number and color of bands (Redundant X-Pol RBS Txor X-Pol RBS Rx)Red Red Red WhiteRedundantunitSector B, X-Pol RBS Tx # 2
64/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104– where a cable connects to the lightning arrester,– where a cable connects to the X-Pol RBS Tx or X-Pol RBS Rx jumper cable.Cables may be marked for identification at additional points along their lengths, however, always leavea space of at least 1 meter (3.28 ft) between groups of identification bands on the same cable.To mark an IF cable for identification1. Use Table 22 to calculate the correct number and color of bands to be applied to the IF cable.2. Apply the bands of electrical tape to the cable as follows:1. Cut the tape used for each band to a length that is sufficient to wrap around the cable at leastthree times.2. Create bands by wrapping strips of tape around the cable, leaving a space equal to the width ofthe tape between bands. See Figure 32.3. Apply a cable tie securely around the center of each band to prevent the band from falling off thecable. See Figure 32.4. If a white band (indicating redundancy) is required, add it on either side of the colored bands.The white band must be spaced and secured in the same way as the colored bands.Figure 32 – Applying bands of tape2.8.3 – Cable strain reliefStrain relief is required for every cable connected to an X-Pol RBS Tx, X-Pol RBS Rx or 2:1 Combiner/Splitter. Strain relief protects the connectors on these devices from the potentially damaging stressesthat occur when connected cables are subject to the forces of wind or accidental tugging. Strain reliefcan be provided by fastening the IF or RS-422 cables firmly to the mounting pole with plastic ties or cablehangers. Caution - Plastic ties that are used as strain relief must be suitable for outdoor use in theyear-round climate experienced at the installation site (UV exposure and temperatureextremes). Select a plastic tie that is rated to survive until a scheduled maintenance time, andensure that cable ties are replaced according to that schedule.Alternately, strain relief can be provided by cable hangers available from the manufacturerof the IF cable used at the installation.Cable ties Strips of electrical tapeIF cable Spaces between each strip of tape(width of one strip of tape)
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 65/346104To provide cable strain reliefFor each RS-422 or IF cable that connects to an X-Pol RBS Tx, X-Pol RBS Rx or 2:1 Combiner/Splitter:1. Position the cable against the pole as close as possible to the X-Pol RBS Tx, X-Pol RBS Rx or 2:1Combiner/Splitter connector. While positioning the cable:• ensure that the minimum possible stress is put on the connection at the X-Pol RBS Tx, X-PolRBS Rx or 2:1 Combiner/Splitter by carefully bending the cable as required,• ensure that the minimum cable bend radius for the cable is not exceeded when positioning thecable.2. Fasten the cable to the pole using a plastic cable tie or cable hanger.3. Secure the cable to the pole every 1 m (3.28 ft) with plastic ties or cable hangers.2.8.4 – Connecting BS IF cablesThe BS IF cables run from the Bias-T mounted on the 12:2 Combiner/Splitter, through the Type Nlightning arrester, and to the X-Pol RBS Tx/X-Pol RBS Rx. An outdoor IF jumper cable is used to connectthe main outdoor IF cable to the X-Pol RBS Tx/X-Pol RBS Rx.To connect the outdoor IF cablesFor each X-Pol RBS Tx and X-Pol RBS Rx:1. At the rooftop, attach an N(M) connector to the end of the outdoor IF cable. See chapter 10 for detailson attaching an N(M) connector.2. Hoist the cable up the pole or tower and secure it at a point near the X-Pol RBS Tx/X-Pol RBS Rx.3. At the X-Pol RBS Tx or X-Pol RBS Rx: 1. Connect the outdoor IF jumper cable (N(F) connector) to the outdoor IF cable (N(M) connector).2. Secure the IF jumper cable.3. If the IF cable run is not being tested for signal losses immediately, wrap the IF jumper N(F)connector with butyl tape to protect it.4. Secure the IF cable to the pole or tower.4. At the cable entry point:1. Cut the IF cable to a length sufficient to allow the end of the cable to reach and connect to theType N lightning arrester.2. Feed the cable through the weatherproof access panel to the grounded entry point where thelightning arresters are installed. Secure the cable to the grounded entry point.3. Attach an N(M) connector to the end of the cable.4. Connect the cable to the unprotected side of the lightning arrester.5. Secure the cable.Warning - If an IF cable is carrying live dc voltage, do not connect or disconnect the cable.These actions can damage the connectors, which can affect service. To remove dc power,switch off the appropriate circuit breaker on the power distribution system to isolate theindividual IF channel.Note - Every Andrew L4PNM N(M) connector must be tightened to between 2.5 and 2.8 Nm(22 to 25 in.-lb) of torque, using the torque wrench available from Andrew Corporation(Andrew part number 244379).
66/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011045. After the cable run has been tested for signal losses, connect the IF jumper cable to the X-Pol RBSTx or X-Pol RBS Rx.To connect the indoor IF cablesFor each X-Pol RBS Tx and X-Pol RBS Rx:1. Cut a length of indoor IF cable long enough to reach and connect the protected side of the RS-422lightning arrester to the Bias-T. 2. Attach an N(M) connector to each end of the cable.3. Run the cable between the RS-422 lightning arrester and the Bias-T. Secure the cable.4. Connect the cable to the protected side of the lightning arrester.5. Connect the cable to the Bias-T.Connecting synchronization reference cablesThe synchronization reference cable carries the synchronization signal between the X-Pol RBS Tx andthe X-Pol RBS Rx. In a redundant configuration, both X-Pol RBS Txs and both X-Pol RBS Rxs areconnected by 2:1 Combiner/Splitters that connect the signal from the active X-Pol RBS Rx to the activeX-Pol RBS Tx. Figure 33 shows a redundant X-Pol RBS Tx/X-Pol RBS Rx synchronization reference cableconfiguration.Figure 33 – Reference cables for redundant X-Pol RBS Tx/X-Pol RBS Rx configurationsNote - If redundancy is planned in the future, use the redundant synchronization cableconfiguration and install 50 W weatherproof terminators on the unused 2:1 Combiner/Splitterconnectors. This allows for future redundancy without disrupting service in order toreconfigure the cables for redundancy.X-Pol RBS TxR-X-Pol RBS TxX-Pol RBS Rx R-X-Pol RBS RxBTS 2:1Combiner/SplittersSynchronizationreference cable
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 67/346104Table 23 describes the requirements for both non-redundant and redundant X-Pol RBS Tx/X-Pol RBSRx synchronization reference cable configurations. Table 24 lists the cables and connectors recommended for use as synchronization reference cables. Ifthe listed cable types are unavailable, the same cable type that is used to connect the X-Pol RBS Txsand X-Pol RBS Rxs to the lightning arresters may be used, with connectors appropriate for that cabletype.Table 23: Synchronization reference cable configuration requirementsNote: (1) 2:1 Combiner/Splitter 1 is for the X-Pol RBS Tx/R-X-Pol RBS Tx pair. 2:1 Combiner/Splitter 2is for the X-Pol RBS Rx/R-X-Pol RBS Rx pair.Table 24: Recommended synchronization reference cables and connectorsTo connect synchronization reference cables (non-redundant X-Pol RBS Tx/X-Pol RBS Rxconfiguration)1. Measure and cut a length of cable long enough to run between the X-Pol RBS Tx and X-Pol RBSRx, including the distance required to run up each pole to the X-Pol RBS Tx and X-Pol RBS Rxconnectors.2. Install an N(M) connector on each end of the cable.3. Run the cable between the X-Pol RBS Tx and X-Pol RBS Rx.4. Connect the cable to the X-Pol RBS Tx and X-Pol RBS Rx (100 MHz reference connectors).5. Secure the cable according to the manufacturer’s recommendations.Configuration Cable requirements ConnectorNon-redundantX-Pol RBS Rx andX-Pol RBS TxX-Pol RBS Rx to X-Pol RBS Tx 90° N(M)-90° N(M)RedundantX-Pol RBS Rx and redundantX-Pol RBS TxX-Pol RBS Tx (primary) to 2:1 Combiner/Splitter 1 (1) 90° N(M)-N(M)R-X-Pol RBS Tx (redundant) to 2:1 Combiner/Splitter 1 90° N(M)-N(M)X-Pol RBS Rx (primary) to 2:1 Combiner/Splitter 2 90° N(M)-N(M)R-X-Pol RBS Rx (redundant) to 2:1 Combiner/Splitter 2 90° N(M)-N(M)One cable from 2:1 Combiner/Splitter 1 to 2:1 Combiner/Splitter 2 N(M)-N(M)RedundantX-Pol RBS Tx,singleX-Pol RBS RxX-Pol RBS Tx (primary) to 2:1 Combiner/Splitter 1 90° N(M)-N(M)R-X-Pol RBS Tx (redundant) to 2:1 Combiner/Splitter 1 90° N(M)-N(M)X-Pol RBS Rx (primary) to 2:1 Combiner/Splitter 2 90° N(M)-N(M)Unconnected 2:1 Combiner/Splitter 2 connector 50 9 terminator,weatherproofOne cable from 2:1 Combiner/Splitter 1 to 2:1 Combiner/Splitter 2 N(M)-N(M)Cable type Connectors Connector part numberHeliax LDF2-50 N(M)90° N(M)L2PNML2PNR-HC
68/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104To connect synchronization reference cables (redundant X-Pol RBS Tx/X-Pol RBS Rx)Using a metal hose clamp, attach a 2:1 Combiner/Splitter to the X-Pol RBS Tx pole under the X-Pol RBSTx/R-X-Pol RBS Tx pair; see Figure 33.1. Using a metal hose clamp, attach a 2:1 Combiner/Splitter to the X-Pol RBS Rx pole under the X-Pol RBS Rx/R-X-Pol RBS Rx pair.2. Measure and cut four lengths of cable such that each length is long enough to run from the 2:1Combiner/Splitter to the X-Pol RBS Tx or X-Pol RBS Rx mounted above it.3. Install an N(M) connector on each end of the each cable. 4. Connect the four cables to the X-Pol RBS Txs and X-Pol RBS Rxs, as shown in Figure 33.5. Measure and cut a length of cable long enough to run between the X-Pol RBS Tx/R-X-Pol RBS Tx 6. 2:1 Combiner/Splitter and the X-Pol RBS Rx/R-X-Pol RBS Rx 2:1 Combiner/Splitter, including thedistance required to run up each pole to the 2:1 Combiner/Splitter connectors.7. Install an N(M) connector on each end of the cable.8. Run the cable between the 2:1 Combiner/Splitters.9. Connect the cable to the 2:1 Combiner/Splitters, as shown in Figure 33.10. Ensure all connections meet the requirements of outdoor use.11. Secure the cable according to the manufacturer’s recommendations.2.8.5 – Connecting the RS-422 data cablesEach RS-422 data cable run is composed of two intermediate cables: one indoor-rated and one outdoor-rated cable. The cables are connected by an RS-422 lightning arrester. Table 14 lists the cables and theconnectors required.In a non-redundant X-Pol RBS Tx/X-Pol RBS Rx system, RS-422 data cables connect the IBSassociated with the first IBS-TLX card in a IBS group to the X-Pol RBS Tx and X-Pol RBS Rx. In aredundant X-Pol RBS Tx/X-Pol RBS Rx system, additional RS-422 data cables connect:– the IBS card configured for Tx control to the redundant X-Pol RBS Tx,– the IBS card configured for Rx control to the redundant X-Pol RBS Rx.To connect outdoor BS RS-422 data cableFor each X-Pol RBS Tx and X-Pol RBS Rx:1. Cut a length of outdoor-rated cable long enough to connect the X-Pol RBS Tx/X-Pol RBS Rx to theRS-422 lightning arrester.2. At an indoor location, attach a LEMO connector to the X-Pol RBS Tx/X-Pol RBS Rx end of the cable.Figure 34 shows the pin and signal assignment and the wire color coding. See section 9.11 forinstructions on installing a LEMO connector.
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 69/3461043. At the outside of the weatherproof access panel, feed the end of the cable without the connectorthrough the access panel, then to the grounded entry point where the RS-422 lightning arrester isinstalled.4. Attach an RJ45 connector to the RJ45 lightning arrester end of the cable. Figure 34 shows the pinand signal assignment and the wire color coding. See section 9.10 for instructions on installing anRJ45 connector.5. Test the cable for pin-to-pin conductivity.6. Connect the LEMO connector to the RS-422 data connector on the X-Pol RBS Tx/X-Pol RBS Rx,and connect the RJ45 connector to the unprotected side of the RS-422 lightning arrester.7. Secure the cable according to the manufacturer’s recommendations.Figure 34 – LEMO and RJ45 connector pin and signal assignmentTo connect indoor BS RS-422 cableFor each X-Pol RBS Tx and X-Pol RBS Rx:1. Cut a length of indoor-rated cable long enough to connect the IBS-TLX to the RS-422 lightningarrester.2. Attach an RJ45 connector to each end of the cable. Figure 35 shows the pin and signal assignmentsand the wire color coding. See section 9.10 for instructions on installing an RJ45 connector.Note 1 - Attaching a LEMO connector to the outdoor IF cable is an intricate procedure thatshould not be done outdoors.Note 2 - There are two pairs of conductors in the RS-422 data cable: one pair has a blue wireand a white wire; the other pair has an orange wire and a white wire. To distinguish the whitewires from each other, use a permanent marker to mark the white wire of the blue-white pair.14823456782712314132Red dotLEMOPINRJ45PINTx+W (Blu)Rx+ORx-W (O)Tx-BluReleaseclipTx-BluTx+W (Blu)Rx-W (O)Rx+OLegendBlu = Blue W (Blu) = White (Blue)O = Orange W (O) = White (Orange)
70/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011043. Test the cable for pin-to-pin continuity.4. Connect one end of the cable to the IBS (X-Pol RBS Tx or X-Pol RBS Rx connector, as appropriate),and the other end of the cable to the protected side of the RS-422 lightning arrester.5. Secure the cable according to the manufacturer’s recommendations.Figure 35 – RJ45 connector pin and signal assignment2.8.6 – Connecting SMA cablesIBS cards are connected to 12:2 Combiner/Splitters by pairs of SMA cables. If multiple IBS cards areused, multiple pairs of SMA cables are used. To connect an SMA cableNote - There are two pairs of conductors in the RS-422 data cable: one pair has a blue wireand a white wire; the other pair has an orange wire and a white wire. To distinguish the whitewires from each other, use a permanent marker to mark the white wire of the blue-white pair.Note - The number of IBS cards connected to the 12:2 Combiner/Splitters may be limited bythe X-Pol RBS Rx/X-Pol RBS Tx hardware. Consult Alcatel for the maximum number of IBScards that can be connected to an X-Pol RBS Tx/X-Pol RBS Rx through a 12:2 Combiner/Splitter.Note - All SMA cable connectors must be tightened to 1 Nm (9 in.-lb) of torque, using an SMAcable torque wrench equivalent to the Suhner SMA torque wrench (Suhner part number 74z-0-0-21), or the Maury Microwave SMA torque wrench (Maury Microwave part number879981).123456781 2345678Tx+W (Blu)ReleaseclipTx-BluTx+Rx-W (O)Rx+LegendBlu = Blue W (Blu) = White (Blue)O = Orange W (O) = White (Orange)ReleaseclipBluOTx+W (Blu)Rx-W (O)Rx+O
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 71/3461041. Connect one end of an SMA cable to the Tx connector on the IBS card faceplate.2. Connect the other end of the same SMA cable to connector 1 on the Tx 12:2 Combiner/Splitter.3. Connect one end of another SMA cable to the Rx connector on the IBS card faceplate.4. Connect the other end of the same SMA cable to connector 1 on the Rx 12:2 Combiner/Splitter.5. Connect the Tx and Rx connectors from the other IBS cards (cards 2 through 12) to Tx and Rx 12:2Combiner/Splitter connectors 2 to 12, as indicated in Figure 36.6. Install 50 W terminators on all unused 12:2 Combiner/Splitter connectors.Figure 36 – SMA cable connections2.8.7 – Connecting the Bias-T power cableThe Bias-T power cable connects between the Bias-T surge protector and the –48 V dc powerdistribution system.To connect the Bias-T power cable1. Use an ohmmeter to determine which wire on the Bias-T power cable connects to the center pin ofthe BNC connector. The center pin carries the –48 V dc voltage. Verify that the other wire connectsto the outer shell of the BNC connector (ground). 2. Connect the wire connected to the BNC center pin to the –48 V dc distribution system.Warning - Do not connect any connector (BS or Type N) in the IF cable run while the cablescarry dc voltage. This can damage the connector, which can affect service. To remove dcpower, switch off the appropriate circuit breaker on the power distribution system to isolatethe individual IF channel.IBS-TLXIBS-TLXIBS-TLX123456789101112123456789101112Tx 12:2Combiner/SplitterRxRxRxTxTxTx
72/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 011043. Connect the ground wire to the ground terminal of the distribution system.4. Ensure that the dc power supply is turned off and connect the Bias-T power cable BNC connector tothe surge protector.2.8.8 – Installing an RJ45 connector on an RS-422 cableThis section describes how to install a Stewart RJ45 connector on a Delco cable, using Stewart tools. Itcan also be used as a guideline for installing other manufacturers’ connectors and cables.Tools and hardwareThe following connector tools and hardware are required:– Stewart RJ45 hand tool (Stewart part number 2940231-01) with Stewart RJ45 die set (Stewartpart number 2906253-01).– Stewart ferrule crimp tool (Stewart part number 29125212-01).– Stewart shielded RJ45 connector(s) (Alcatel part number 90-6815-01 or Stewart part number 943-SP-370808SM2); each connector has:• RJ45 plug,• housing,• ferrule,• management bar.– Delco cable.To install an RJ45 connector1. Cut one end of the cable with the wire cutters and slide the connector housing onto the cable, withthe housing notch pointing toward the trimmed end of the cable; see Figure 37.Figure 37 – Placing the connector housing on the cable2. Strip off enough cable jacket with the wire strippers to expose approximately 25 mm (1 in.) of thebraided shielding, being careful not to nick the braided shield.3. Roll back the braided shielding and the drain wire over the cable jacket, exposing the aluminum-mylar shielding that covers the four conductors. Unwrap the mylar shielding and fold it back over thecable jacket. Ensure that the aluminum (silver) side of the mylar shielding is facing up so that it willImproper crimping or damaged connectors may result if tools other than the specifiedStewart tools are used.HousingCableNotch
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 73/346104make contact with the ferrule when the ferrule is slipped over the cable; see Figure 38.4. Slip the ferrule over the braided shielding, ensuring that the rounded edge of the ferrule points towardthe trimmed end of the cable; see Figure 38a. Leave 1 mm (1/32 in.) of shielding showing; see Figure38b. Ensure that there is good contact between the ferrule, the shielding and the drain wire. Figure 38 – Placing the ferrule on the cable5. Prepare the ferrule and conductors for crimping.1. Separate and untwist one of the pairs of conductors. Use a marker to place an identifying markon the white conductor. Make a note of which pair has been marked, so that the conductors atthe other end of the cable can be attached to the correct pins.2. Separate and untwist the other pair of conductors.3. Arrange the conductors so they are parallel when they come out of the cable jacket; see Figure39.Caution - Each pair of conductors has a white conductor. It is possible to get the whiteconductors mixed up at either end if they are not properly marked and identified. To prevent damage to the conductors during crimping, ensure that the conductors do notoverlap.a.b.BraidedshieldingAluminummylar shieldingFerruleRoundededgeDrainwire1 mm(1/32 in.)
74/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 39 – Preparing the conductors for crimping6. Insert the ferrule into the ferrule crimping tool, using the proper crimp insert in the crimping tool.7. Crimp the ferrule such that the crimp wings are parallel to the row of conductors; see Figure 40.Figure 40 – Crimping the ferrule8. Trim the excess shielding and drain wire.9. Insert the conductors into the management bar, as shown in Figure 41. Table 25 identifies the pinand signal assignments. The LEMO connector is installed as part of Procedure 9-7.Caution - Failure to crimp the ferrule prevents the RJ45 connector from assemblingproperly. Consequently, the connector may not fit properly into the lightning arrester or IBS.Excess shieldand drain wireConductorsdo not overlap Wings(parallel to rowof conductors)
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 75/346104Figure 41 – Inserting the conductors into the management barTable 25 RS-422 cable pin and signal assignments10. Slide the management bar towards the cable jacket until there is no more than 4 mm (0.15 in.)between the bar and the jacket; see Figure 42. PinSignalRJ45 connector LEMO connector13Tx-21Tx+72Rx+84Rx-Note - The cable may not work properly if the distance between the management bar andthe cable jacket is greater than 4 mm (0.15 in.).ManagementbarPin 2Tx+ (W[Blu])Pin 1Tx- BluPin 8Rx- (W[O]Pin 7Rx+ (O)
76/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 42 – Positioning the management bar11. Prepare the conductors for insertion into the RJ45 plug.1. Trim all the conductors so that they extend from the management bar by 6 mm (0.25 in.); seeFigure 42.2. Pull the management bar to the ends of the conductors, as shown in Figure 43.Figure 43 – Preparing the conductors for insertion into the RJ45 connector12. Insert the management bar (with conductors and ferrule) into the RJ45 plug; see Figure 44. Whenthe management bar stops, continue to push the conductors until they can be seen under the plugcontacts. Inspect the conductors by looking through the transparent plug to ensure that allconductors are pushed completely under the contacts, and are ready for termination.Warning - The cable may not function properly if all conductors are not positioned correctly.4 mm(0.15 in.)6 mm(0.25 in.)
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 77/346104Figure 44 – Inserting the management bar into the RJ45 connector13. Insert the RJ45 connector assembly into the RJ45 crimping tool with the appropriate termination dieset. Crimp the connector in order to terminate the conductors; when the conductors are terminated,they make contact with the appropriate pins.14. Slide the RJ45 housing over the plug, and snap the housing into position. When positioned correctly,the notch in the housing clears the RJ45 release clip on the bottom of the plug; see Figure 44.2.8.9 – Installing a LEMO connector on an RS-422 cableThis section describes how to install a LEMO Series K connector on a Delco cable. It can also be usedas a guideline for installing a LEMO Series K connector on other manufacturers’ cables.Tools and hardwareThe following tools and hardware are required:– LEMO Series K connector (Alcatel part number 90-6816-01, LEMO USA part numberFGG.1K.304.CLCC.60Z) with extra contact pins,– DMC crimping tool (LEMO part number MH860) with positioner tool (LEMO part numberDCE.91.091.BVC),– LEMO contact pin extraction tool (LEMO part number DCC.91.090.5LA),– Delco cable,Warning - Improper crimping or damaged connectors may result from using tools other thanthe specified Stewart tools. For example, the AMP crimping tool may not allow the Stewartconnector to be completely inserted. The Wearns-Hollingworth crimping tool requires that theStewart connector be aligned by hand, because the connector does not have a stop thatprevents the body of the connector from passing completely through the tool.Note - Attaching a LEMO connector to the outdoor IF cable is an intricate procedure thatshould not be done outdoor.Housing NotchPin 1Pin 8Pin 8Pin 1RJ45plugRJ45 plugcontactsReleaseclip
78/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104– wire cutter,– wire stripper,– permanent marker,– ruler (metric and imperial distances).To install a LEMO connector1. Identify all parts of the LEMO connector; see Figure 45.Figure 45 – LEMO Series K connector2. Remove approximately 50 mm (2 in.) of cable jacket, being careful not to nick the braided shieldunderneath the jacket.3. Slide the bend relief, collet nut, collet, metal washer and sealing gland on to the cable jacket; seeFigure 46. Ensure that:• the slots in the collet face towards the collet nut,• the sealing gland fits snugly over the cable jacket,• the bevel in the metal washer faces towards the collet.Improper crimping or damaged connectors may result if tools other than the specified toolsare used.Caution - The Delco cable has two pairs of conductors and each pair has a white conductor.It is possible to get the white conductors mixed up if one of the conductors is not properlymarked and identified. Caution - Water may enter the LEMO connector if the sealing gland does not fit snugly overthe cable jacket. If the fit is not snug, do not continue the installation until the correct cableand connector is confirmed.1234567 891. Connector body2. Insert3. Insert carrier4. Cone washer5. Sealing gland6. Metal washer7. Collet8. Collet nut9. Bend relief
3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 79/346104Figure 46 – LEMO connector installation4. Strip off the braided shielding to expose the aluminum-mylar shielding. Leave 4 mm (0.16 in.) ofbraided shielding; see Figure 47.Figure 47 – Exposing the shielding5. Fit the cone washer over the braided shielding until it reaches the cable jacket. The bevelled edgeon the cone should face toward the exposed wires; see Figure 48. 1. Fold the shielding back over the cone.2. Remove the drain wire, aluminum-mylar shielding and fiberglass reinforcing material at the baseof the cone.3. Identify the white-blue twisted-pair and mark the white wire with the marker to distinguish it fromthe white wire of the white-orange pair. Make the mark at the base of the cone so that it does notget removed when the insulation is stripped from the wire.Figure 48 – Fitting the cone washer and trimming excess material6. Trim the braided shielding at the point where the bevel in the cone becomes a cylinder; see Figure49. Excess braid prevents the insertion of the cone into the connector body.50 mm(2 in.)SealingglandMetalwasher Collet ColletnutBendreliefBevel sideBraid Jacket4 mm (0.16 in.)BraidCone washer
80/346 Issue 01 - April 2001 - Draft 04 3CC12426AAAA TQ BJA 01104Figure 49 – Trimming the braided shielding7. Cut all the wires to a length of 16 mm (0.64 in.); see Figure 49.8. Strip 8 mm (0.32 in.) of insulator from each wire (see Figure 50a), being careful not to damage anystrands, and ensuring that the white wire of the white-blue pair will still be marked after stripping it.Tin each conductor with high-quality solder.Fold each conductor back on itself to make a 4 mm (0.16 in.) lead that doubles the lead diameter(approximately 24 AWG); see Figure 50b.Figure 50 – Stripping and preparing the wiresNote - The shielding provides strain relief when it is pressed between the cone washer andthe insert.Caution - A proper crimp connection cannot be made unless the lead is folded back.Trim braidat bevel16 mm(0.64 in.)(a)(b)4 mm(0.16 in.)8 mm(0.32 in.)8 mm(0.32 in.)8 mm(0.32 in.)Foldedconductors

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