Cambium Networks 50450I Fixed Outdoor Point to Multipoint Transceiver User Manual 450 Platform User Guide

Cambium Networks Limited Fixed Outdoor Point to Multipoint Transceiver 450 Platform User Guide

User Manual - Part 3

Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-31 PMP 450 Series Assembling the PMP 450 AP antenna To assemble a PMP 450 Series AP antenna, perform the following steps. Note Cambium recommends to assemble the antenna, attach the AP and cabling, and to seal the RF connections before installing the unit at the deployment site. 1 Inventory the parts to ensure that you have them all before you begin. The full set of parts is shown below. Figure 92 PMP 450 AP antenna parts
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-32 2 Begin assembling the upper bracket by attaching the (2) 7” hex bolts to the bracket using (2) serrated flange nuts Figure 93 AP antenna upper bracket assembly 3 Attach the upper bracket to the adjustment arms using (2) hex bolts, (2) flat washers and (2) lock washers. Feed the bolt through the lock washer then flat washer, then thread the bolt into the upper bracket’s threaded receptacle. Figure 94 AP antenna upper bracket attached to upper adjustment arms
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-33 4 Attach the rear strap to the upper bracket using (2) serrated flange nuts and (1) retaining bracket. Do not tighten the nuts now. Figure 95 Rear strap connected to upper AP antenna bracket 5 Attach the entire upper bracket to the antenna using (2) hex bolts, (2) flat washers and (2) lock washers. Feed the bolt through the lock washer then flat washer, then thread the bolt into the upper bracket’s threaded receptacle. Figure 96 Assembled upper bracket connected to AP antenna
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-34 6 Begin assembling the lower bracket by attaching the (2) 7” hex bolts to the bracket using (2) serrated flange nuts Figure 97 AP Antenna Lower Bracket Assembly 7 Attach the rear strap to the bracket using (2) serrated flange nuts and (1) retaining bracket. Do not tighten the nuts now. Attach the entire lower bracket to the antenna using (2) hex bolts, (2) flat washers and (2) lock washers. Figure 98 Lower bracket attached to AP antenna Attaching the PMP 450 AP to the antenna To attach a PMP 450 Series AP to the antenna, perform the following steps.
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-35 Note Use shielded cable for all infrastructure connections associated with APs, SMs, and CMMs. The environment that these modules operate in often has significant unknown or varying RF energy. Operator experience consistently indicates that the additional cost of shielded cables is more than compensated by predictable operation and reduced costs for troubleshooting and support. 1 Attach the included bracket to the rear of the AP using the (4) M5 x 7mm bolts Figure 99 Attaching bracket to the rear of the AP 2 Attach the AP to the antenna by sliding the bracket onto the bolts and tighten the (4) serrated flange nuts using a 13 mm spanner wrench. Figure 100 Lower bracket attached to AP antenna
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-36 Note If using a non-standard antenna, do not cover the equilibrium membrane vent located on the back of the unit. Figure 101 Mounted PMP 450 AP and antenna assembly, viewed from back and back Equilibrium Membrane Vent
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-37 Attaching the PMP 450 Series AP and antenna to the mount point 1 Attach the upper bracket of the antenna to the mount point by closing the rear strap around the pole and tightening the (2) serrated flange nuts using a 13mm spanner wrench. These must be tightened evenly on the pol to avoid jumping/stripping threads. Figure 102 Attaching the AP antenna upper bracket to the pole 2 Attach the lower bracket of the antenna to the mount point by closing the rear strap around the pole and tightening the (2) serrated flange nuts using a 13mm spanner wrench. These must be tightened evenly on the pole to avoid jumping/stripping threads. Figure 103 Attaching the AP antenna lower bracket to the pole 3 Use a local map, compass, and/or GPS device as needed to determine the direction that one or more APs require to each cover the 90° sector.
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-38 4 Choose the best mounting location for your particular application. Note Use the embedded spectrum analyzer or a commercial analyzer to evaluate the frequencies present in various locations. OFDM APs need not be mounted next to each other. They can be distributed throughout a given site. However, the 90° offset must be maintained. If you want to collocate these APs with PMP 100 Series APs of the 5.4-GHz frequency band range, plan to allow at least 25 MHz of separation between their center channels. 5 Secure a ground strap to the ground lug on the back of the AP. 6 Secure the ground strap to the pole, tower, or other trusted ground. 7 The bracket of the standard antenna has provision for measured down tilt. The recommended practice is to use one of the many radio analysis and mapping tools or on-line tools to calculate down tilt based on antenna height above the service area. The proper angle of tilt can be calculated as a factor of both the difference in elevation and the distance that the link spans. Even in this case, a plumb line and a protractor can be helpful to ensure the proper tilt. This tilt is typically minimal. The number of degrees to offset (from vertical) the mounting hardware leg of the support tube is equal to the angle of elevation from the lower module to the higher module (<B in the example provided in Figure 67).
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-39 Figure 104 Variables for calculating angle of elevation (and depression) Where: Is: b angle of elevation B vertical difference in elevation A horizontal distance between modules To use metric units to find the angle of elevation, use the following formula: Where: Is: B expressed in meters A expressed in kilometers To use English standard units to find the angle of elevation, use the following formula: Where: Is: B expressed in feet A expressed in miles The angle of depression from the higher module is identical to the angle of elevation from the lower module. 8 Connect the coax cables to the antenna and to the AP 9 Weatherproof the connector on the coax cables (see section Attaching and weatherproofing an N type connector on page 6-69). tan b = B1000Atan b = B5280A
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-40 PMP 450i Series AP 900 MHz Mounting of PMP 450i AP 900 MHz 1 Inventory the parts to ensure that you have them all before you begin. The full set of parts is shown in Figure 106. Figure 105 PMP 450i AP 900 MHz antenna unbox view Figure 106 PMP 450i AP 900 MHz antenna inventory Upper bracket Lower bracket Adjustable arm Nuts and bolts Radio assembly plate
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-41 2 (1) Unfold the upper bracket assembly of the antenna. (2) Unfold the lower bracket assembly. (3) Loose the radio assembly plate by untightening M8 four bolds. (4) Remove the radio assembly top plate by sliding towards upper bracket assembly. 1 2 4 3
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-42 3 (1) Place the radio assembly plate on the radio and align holes with radio enclosure. Note Ensure that the radio plate notch opening and RF port of radio in same direction. It is also important to make sure you attach the radio assembly plate in the proper orientation as shown in figure. (2) Insert M6 bolts through plate into radio enclosure (3) Fix the plate by tightening four bolts with a torque setting on 2 ±0.5 Nm 1 2 3
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-43 4 (1) Place the radio mounted plate on sector antenna as shown in the figure. Ensure that the orientation of RF port of antenna and radio are in same direction (2) Line up the radio assembly to four bolts and slide towards lower bracket assembly to lock. (3) Tighten the radio assembly plate using four M8 bolts to a torque setting of 2 ±0.5 Nm 1 3 2
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-44 5 (1) Connect the port A of AP to vertical and port B of AP to horizontal polarization interfaces of the antenna with RF cable. Ensure that the RF cables are pass-through inside the lower bracket assembly (2) Hand tighten the N type connectors and the torque should not exceed more than 1 Nm Mounting of PMP 450i AP 900 MHz antenna to the pole The mounting procedure of PMP 450i AP 900 MHz and antenna to the pole is given below: 1 Remove the upper and lower rear bracket strap from the sector antenna. 1 2 Port A Port B
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-45 2 Attach the upper and lower bracket of the antenna to the mount point by closing the rear strap around the pole. Note Before mounting the radio on the pole, secure the upper and lower bracket assemblies with a torque setting of 3 to 4 Nm as shown in Figure 1 . Also, ensure that inner strap of upper bracket is set to zero degree marking. Figure 107 Attaching radio mounting PMP 450i AP 900 MHz antenna to the pole 1 2 3 Rear strap Rear strap Inner strap
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-46 3 Tighten the four serrated flange M10 nuts on the upper and lower rear straps using a 17 mm spanner wrench. These must be tightened evenly on the pole to avoid jumping/stripping threads Sector antenna alignment The 900 MHz sector antenna horizontal and vertical alignment procedure is shown in Figure 108. The antenna can be aligned from +5 to -10 degree by adjusting the inner strap of the upper bracket assembly. Figure 108 900 MHz sector antenna alignment Horizontal alignment Vertical alignment downward tilt Vertical alignment upward tilt Inner strap Upper bracket assembly ODU ground cable Building ground system ODU ground cable Building ground system
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-47 PMP 450 Series SM 900 MHz Attaching the SM 900 MHz directional antenna to the pole 1 Unbox the directional Yagi antenna. Figure 109 PMP 450i SM 900 MHz external directional antenna 2 Attach the directional antenna to the pole and insert the two U clamps into the mounting bracket of the antenna Figure 110 Attach the antenna to the pole
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-48 3 Tighten all nuts to approximately 6 to 7 Nm or less to avoid deforming the pole. Figure 111 Fixing the nuts
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-49 Radio mounting to the antenna 1 Align the radio to E bracket and slide towards right to lock on the antenna as shown in figure. Figure 112 Fixing the radio to the antenna 2 Connect the port A of SM to vertical and port B of SM to horizontal polarization interfaces of the antenna with RF cable. Figure 113 Connecting RF cable to the radio Slide towards right to lock ODU ground cable Building ground system
Chapter 6: Installation Installing external antennas to a connectorized ODU Page 6-50 Directional Yagi antenna alignment The directional Yagi antenna horizontal and vertical alignment procedure is shown below. The Yagi antenna can be aligned for +15 to -15 degree. Figure 114 Yagi antenna alignment - horizontally Figure 115 Yagi antenna alignment - upward tilt Figure 116 Yagi antenna alignment - downward tilt
Chapter 6: Installation Installing an integrated ODU Page 6-51 Installing an integrated ODU Caution Do not reverse the bracket clamp, as this arrangement may lead to failure of the assembly. Do not over-tighten the bolts as this may lead to failure of the assembly. PMP 450m Series – AP To mount and connect an integrated ODU, proceed as follows: 1 Inventory the parts to ensure that you have them all before you begin. The full set of parts is shown in Figure 117. Figure 117 PMP 450m Series - AP unbox view Note The additional nuts provided for top and bottom brackets are used to hold the long bolts in position during installation. PMP 450m AP Bottom bracket Top bracket (Additional nuts) (Additional nuts)
Chapter 6: Installation Installing an integrated ODU Page 6-52 2 Attach the bottom bracket to the ODU using (2) hex bolts and secure the M8 bolts by applying 5 Nm torque. 3 Attach the top bracket to the projecting studs on the ODU and secure the top bracket using two M8 nuts by applying 5 Nm torque. 4 Fix the front and rear strap assembly to the upper bracket using two bolts. Do not tighten the nuts now. Note: The PMP 450m antenna operates with 2 degrees of electrical down-tilt. 5 Fix the front and rear strap assembly to the bottom bracket using two bolts. Do not tighten the nuts now.
Chapter 6: Installation Installing an integrated ODU Page 6-53 6 See PMP 450m Series – AP on page 6-3 for the grounding procedure. See PMP 450m Series – AP on page 6-6 for the mounting procedure.
Chapter 6: Installation Installing an integrated ODU Page 6-54 PMP/PTP 450i Series – AP/SM/BH To mount and connect an integrated ODU, proceed as follows: 1 Fix the mounting plate to the back of the ODU using the four M6 bolts, and spring and plain washers provided. Tighten the bolts to a torque setting of 5.0 Nm (3.7 lb ft). Figure 118 Fixing the mounting plate to the back of the ODU 2 Attach the bracket body to the mounting plate using the M8 bolt, spring and plain washers. 3 Hoist the ODU to the mounting position. 4 Attach the bracket body to the pole using the bracket clamp, M8 bolts, and spring and plain washers. 5 If the ODU is mounted outdoors, weatherproof the N type connectors (when antenna alignment is complete) using PVC tape and self-amalgamating rubber tape. Figure 119 Attaching the bracket body
Chapter 6: Installation Connecting Cat5e Ethernet cable Page 6-55 Connecting Cat5e Ethernet cable Connecting an RJ45 and gland to a unit Perform this task to connect the Ethernet cable to an AP. To connect the Ethernet cable with a gland to an AP unit, proceed as follows: 1 Insert the RJ45 cable through the gland components 2 Insert the RJ45 plug into the socket in the unit, making sure that the locking tab snaps home. 3 Support the drop cable and gently hand screw the gland body into the unit until the bushing seal is flush to the unit body. Note Do not fit the back shell prior to securing the gland body. 4 Once the gland is fully hand screwed into the unit, tighten it one full rotation only with a 1 1/8 inch spanner wrench. 5 When the gland body has been fitted, tighten the gland back shell. Caution Do not over-tighten the gland back shell, as the internal seal and structure or RJ45 port may be damaged.

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