Transcript
Hardware installation
5. Place and fix the OMT to the interface without tightening the screws. Figure 291: Place and fix the OMT to the interface
Note: Take care to place the OMT with the engraved ARROW indicating the pipe towards the pipe itself.
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Figure 292: Engraved arrow toward pipe
6. Install the MPT-HC V2/MPT-XP transceivers on the RF OMT. Note: Silicone grease must be put on the nose adapter O-ring when indicated in the manufacturer’s installation instructions. If grease for O-ring is not mentioned, it must be avoided.
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Figure 293: Apply silicone grease
Grasp the MPT-HC V2/MPT-XP by the handle and fasten it to the OMT with the four locking hooks that will be tightened onto the corresponding fastening brackets on the OMT.
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Figure 294: Locking hooks and fastening brackets
Fine tuning procedure for polarization alignment The OMT to interface fixation screws must be tightened once the OMT body is in precise vertical position respect to the ground. Then, the antenna pointing procedure must be performed. It consists in finding the best antenna position to minimize the contra-polar received signal, acting on the pole mount tuning screws. After the antenna pointing procedure is completed, you need to apply the fine tuning procedure to one of the facing antennas to align the polarizations. Use the receiver on the polarization opposed to the transmitter on the facing antenna.To perform the fine tuning: 1. Switch to the cross polar receiver. 2. Slightly loosen the OMT to interface fixation screws. 3. Monitor the received cross polar signal and act on the special HEX spacer of the fine tuning mechanism of the OMT till the received signal power reaches its minimum (Power XP 30dB below the homopolar received signal).
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Figure 295: Fine tuning
4. Tighten the OMT fixing screws.
Cable connections (MPT-HC V2/MPT-XP/9558HC) Electrical Ethernet cable If the PFoE has been implemented, only one cable interconnects the MPT-HC V2MPT-XP/ 9558HC with the Power Injector or MPT Extended Power Unit.
To terminate the Ethernet cable (MPT-HC V2/MPT-MC/MPT-XP/9558HC side) and to pull it up from Indoor to MPT-HC V2/MPT-MC/MPT-XP/9558HC Warning: to make sure of the continuity and avoid short circuit, all cables / connectors connections such as RJ45, Coaxial, Ethernet, or Optical Fiber made on the field have to be verified and checked with Cable tester. The waterproofness must be also checked.
To terminate the cable the kit plug R2CT must be used. The kit is made up of 10 items as shown in Figure 297.
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Figure 296: Kit plug R2CT
Figure 297: Kit plug R2CT items
Mating sequence instructions To terminate and to connect the cable to the MPT-MC follow the instructions: 1. Turn and remove the protection cap.
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Figure 298: Remove the protection cap
2. Partially unscrew the nut spiral. Figure 299: Unscrew the nut spiral
3. Pass the cable through the mini kit plug and crimp the RJ-45 plug according to the standard. Figure 300: Pass cable through the mini kit plug
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Figure 301: Crimp the RJ-45 plug
Terminate the Ethernet cable according to the EIA/TIA 568B standard. Follow the instructions included with the connector. Figure 302: EIA/TIA standard
4. Insert the RJ-45 plug inside the unlocking clip NOTE: MPR-E doc says “locking clip” here--should probably be unlocking clip, judging by next step. Verify that the latch mechanisms are on the same side. Figure 303: Insert the RJ-45 plug in the unlocking clip
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5. Pull the cable and insert the unlocking clip together with the RJ-45 plug inside the body, with the latches aligned with the body bayonet pin. Place the body arm on the left side. Figure 304: Insert the unlocking clip
6. If you need to hoist the assembly, pull the coupling nut to cover the plug body and return the protection cap. Figure 305: Pull the coupling nut
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Figure 306: Return the cap
7. Tighten the nut spiral with a 21 mm wrench with a torque of 3 N.m mini and 3.5 N.m maxi. The cable is now attached to the plug and ready to be pulled. Figure 307: Tighten the nut spiral
Figure 308: Cable is ready to be pulled
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8. Install the cable, partially unscrew the nut spiral and remove the protection cap to connect to the receptacle. 9. Align the two marks on the plug body and the receptacle, insert the plug body into the receptacle and rotate it clockwise. Figure 309: Align, insert and rotate the plug body
10. Connect the RJ-45 plug to its socket by pushing the cable. Figure 310: Connect the RJ-45 plug to its socket
11. Push the coupling nut and rotate it clockwise until it is secured to the receptacle.
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Figure 311: Push and rotate the coupling nut
12. Secure the assembly by screwing the nut spiral with a 21mm wrench with a torque of 3 N.m mini and 3.5 N.m maxi. Figure 312: Secure the assembly
Unmating sequence instructions To perform the unmating sequence: 1. Unscrew the nut spiral using a 21 mm adapted wrench. Figure 313: Unscrew the nut spiral
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2. Rotate and unlock the coupling nut. Figure 314: Rotate and unlock the coupling nut
3. Engage the RJ-45 unlocking clip forward until it stops. Figure 315: Engage the RJ-45 unlocking clip
4. Press on the unlocking clip latch. Figure 316: Press on the unlocking clip latch
5. Pull the clip and the cable rearward to disconnect the RJ-45 plug.
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Figure 317: Disconnect the RJ-45 plug
6. Rotate and disconnect the R2CT plug body. Figure 318: Rotate and disconnect the R2CT plug body
Optical cable connection An optical cable must be used, if the PFoE has not been implemented. Note: First the SFP must be inserted in the MPT. The SFP is not included in the MPT.
The cable is shown in Figure 319. The cable is a preassembled cable available in different lengths; see Accessories and cables for MPT-HC V2/MPT-XP/9558HC connections. Figure 319: LC/Q-XCO to LC Fiber cord
To pull-up the cable take a cord and insert it in the slot of the cable cap. Make a knot on the cord and pull-up the cable.
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Remove the cap and connect the connector to the “LC+Q-XCO” connector in the MPT-HC V2/MPT-XP/9558HC. The overlength of the optical fiber must be rolled up in the Cable overlength box. Fix the Fiber on the pole or the tower with UV tie raps. See Figure 320. Figure 320: Fiber cable overlength box
For the 1+0 repeater configuration, LC/Q-XCO cable (3CC52169XXXX) is required for ODU-ODU connection.
Power supply cable connection The power supply cable is a coaxial cable, which is used only if the optical cable is used to transport the Ethernet traffic. Two types of coaxial cables are available according to the length (less than 200 m or 200 m to 350 m). The coaxial cable must be connected to:
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Indoor side: to the Station battery through the Lightning protection + Low Pass Filter + Pigtail N-to-2 wires. See How to connect the MPT-HC V2 to the battery.
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ODU-side to the N-to-Ethernet pair pigtail (+ RJ45 + R2CT). The R2CT must be then connected to the relevant connector on the MPT-HC V2/MPT-XP/9558HC. For the termination of the cable with RJ45 and R2CT see Electrical Ethernet cable.
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Warning: The Power Supply connection must be made waterproof (see Type N connectors and grounding kits waterproofing on the IDU/ODU cables).
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Surround the connector with the auto amalgamate tape from up to down
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Surround the connector with the adhesive tape from up to down
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Put tie raps on the up and the down of the connector
Cable connection in XPIC configuration The two MPT-HC V2/MPT-XP must be linked with the XPIC cable and with the RPS cable. The XPIC cable is a cat7 cable with proprietary connectors. Three lengths are available: 1 m, 2.5 m, 8 m, to be chosen depending on the way the MPT-HC V2/MPT-XP are installed. The RPS cable is an LC-LC optional jumper preassembled with Q-XCO (1m length). Figure 321: XPIC connector position
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