Chapter 5: Installation This chapter describes how to install and test the hardware for a PTP 700 link. It contains the following topics: • Safety on page 5-2 contains important safety guidelines that must be observed by personnel installing or operating PTP 700 equipment. • ODU variants and mounting bracket options on page 5-6 provides details of six different bracket options, including the type of ODu and range of pole diameters supported by each option.
Chapter 5: Installation Safety Safety Warning To prevent loss of life or physical injury, observe the following safety guidelines. In no event shall Cambium Networks be liable for any injury or damage caused during the installation of the Cambium PTP 700. Ensure that only qualified personnel install a PTP 700 link.
Chapter 5: Installation Safety DC supply To power the ODU from a DC supply, use the PTP 650/700 AC+DC Enhanced Power Injector (PSU) (Cambium part number C000065L002). Ensure that the DC power supply meets the requirements specified in PSU DC power supply on page 3-15. Powering down before servicing Before servicing PTP 700 equipment, always switch off the power supply and unplug it from the PSU. Do not disconnect the RJ45 drop cable connectors from the ODU while the PSU is connected to the power supply.
Chapter 5: Installation Safety Minimum separation distances Ensure that personnel are not exposed to unsafe levels of RF energy. The units start to radiate RF energy as soon as they are powered up. Never work in front of the antenna when the ODU is powered. Install the ODUs so as to provide and maintain the minimum separation distances from all persons. For minimum separation distances, see Calculated distances on page 4-24.
Chapter 5: Installation Safety Warning Do not install the ODU in a location where the ambient temperature could exceed 40°C unless this is a Restricted Access Location as defined by EN 60950-1. Alerte L’unité externe ne doit pas être installée dans un endroit où la température ambiante est supérieure à 40C à moins que l’accès soit limité au personnel autorisé.
Chapter 5: Installation ODU variants and mounting bracket options ODU variants and mounting bracket options Mounting bracket options The PTP 700 series supports five mounting bracket options. Select the optimum mounting bracket arrangement based on the pole diameter and the ODU variant: Table 113 ODU mounting bracket part numbers Bracket Pole diameter ODU variants Bracket part number Mounting bracket (integrated) 40 mm to 82 mm (1.6 inches to 3.
Chapter 5: Installation Installing the ODU and top LPU Installing the ODU and top LPU To install the ODU and top LPU, use the following procedures: • Attach ground cables to the ODU on page 5-7 • Mount the ODU on the mast on page 5-7 • Mount the top LPU on page 5-12 • Interconnect and ground the ODU and top LPU on page 5-12 Attach ground cables to the ODU 1 Fasten one ground cable to each ODU grounding point using the M6 (small) lugs: one is for the top LPU (M6 lug at other end) and the other is
Chapter 5: Installation Installing the ODU and top LPU Mounting bracket (integrated) 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. 1 Fix the mounting plate to the back of the ODU using the four bolts, and spring and plain washers provided. Tighten the bolts to a torque setting of 5.0 Nm (3.7 lb ft).
Chapter 5: Installation Installing the ODU and top LPU Mounting bracket (connectorized) 1 Identify the square cavities in the casting on the back of the ODU. These cavities will be used to accommodate the heads of two M8 bracket bolts. 2 Fix the mounting plate to the ODU using the four M6 bolts, and spring and plain washers provided. Ensure that the M8 bolts are correctly held between the mounting plate and the ODU. Tighten the M6 bolts to a torque setting of 5.0 Nm (3.7 lb ft).
Chapter 5: Installation Installing the ODU and top LPU Extended integrated mounting bracket 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). The step is common with the standard integrated bracket. 2 Attach the bracket body of the extended bracket on the mounting plate on the ODU to using the M8 bolt and spring and plain washer. 3 Hoist the ODU to the mounting position.
Chapter 5: Installation Installing the ODU and top LPU Mounting bracket (integrated) with large diameter extension kit 1 Fix the mounting plate to the back of the ODU using the bolts and washers provided. Tighten the four bolts to a torque setting of 5.0 Nm (3.7 lb ft). Attach the bracket body to the mounting plate using the M8 bolt and spring and plain washer. This is equivalent to the first two steps for the standard integrated bracket.
Chapter 5: Installation Installing the ODU and top LPU Mount the top LPU 1 For separate LPU mounting, use the U-bolt bracket from the LPU kit to mount the top LPU on the pole below the ODU. Tighten to a torque setting of 7.0 Nm (5.2 lb ft): Interconnect and ground the ODU and top LPU Caution Do not attach grounding cables to the ODU mounting bracket bolts, as this arrangement will not provide full protection.
Chapter 5: Installation Installing the ODU and top LPU 1 Fasten the ODU grounding cable to the top LPU using the M6 (small) lug. Tighten both nuts to a torque of 5 Nm (3.9 lb ft): Locking nut Washer M6 lug Washer Nut Toothed washer M6 lug to ODU 2 Select a tower or building grounding point within 0.3 meters (1 ft) of the ODU bracket. Remove paint from the surface and apply anti-oxidant compound. Fasten the ODU grounding cable to this point using the M10 (large) lug.
Chapter 5: Installation Install external antennas Install external antennas To mount and connect an external antenna, proceed as follows: 1 Mount the antenna(s) according to manufacturer’s instructions. When using separate antennas to achieve spatial diversity, mount one with Horizontal polarization and the other with Vertical polarization.
Chapter 5: Installation Install external antennas 7 Ground the antenna cables to the supporting structure within 0.3 meters (1 foot) of the ODU and antennas using the Cambium grounding kit (part number 01010419001): 8 Fix the antenna cables to the supporting structure using site approved methods. Ensure that no undue strain is placed on the ODU or antenna connectors.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Installing the copper Cat5e Ethernet interface To install the copper Cat5e Ethernet interface, use the following procedures: • Install the ODU to top LPU drop cable on page 5-16 • Install the main drop cable on page 5-18 • Install the bottom LPU to PSU drop cable on page 5-21 • Test resistance in the drop cable on page 5-23 Caution To avoid damage to the installation, do not connect or disconnect the drop cable when power is app
Chapter 5: Installation 2 Installing the copper Cat5e Ethernet interface Fit the parts into the body and lightly screw on the gland nut (do not tighten it): Connect the drop cable to the ODU (PSU port) and LPU 1 (a) Plug the RJ45 connector into the socket in the unit, ensuring that it snaps home. (b) Fit the gland body to the RJ45 port and tighten it to a torque of 5.5 Nm (4.3 lb ft): (a) 2 (b) (a) Fit the gland nut and tighten until the rubber seal closes on the cable.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Disconnect the drop cable from the LPU or ODU Use this procedure if it is necessary to remove an EMC strain relief cable gland and RJ45 connector from the ODU (as illustrated) or LPU. 1 (a) Remove the gland nut. Wiggle the drop cable to release the tension of the gland body. When the tension in the gland body is released, a gap opens at the point show. Unscrew the gland body.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Terminate with RJ45 connectors and glands Caution Check that the crimp tool matches the RJ45 connector, otherwise the cable or connector may be damaged. 1 Thread the cable gland (with black cap) onto the main drop cable. 2 Strip the cable outer sheath and fit the RJ45 connector load bar. 3 Fit the RJ45 connector housing as shown.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Pin Color (Supplied cable) Color (Conventional) 1 Light Orange White/Orange 2 Orange Orange 3 Light Green White/Green 4 Blue Blue 5 Light Blue White/Blue 6 Green Green 7 Light Brown White/Brown 8 Brown Brown Pins on plug face Hoist and fix the main drop cable Warning Failure to obey the following precautions may result in injury or death: • Use the hoisting grip to hoist one cable only.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Ground the main drop cable At all required grounding points, connect the screen of the main drop cable to the metal of the supporting structure using the cable grounding kit (Cambium part number 01010419001). Install the bottom LPU to PSU drop cable Install the bottom LPU Install the bottom LPU, ground it, and connect it to the main drop cable.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Install the LPU to PSU drop cable Use this procedure to terminate the bottom LPU to PSU drop cable with RJ45 connectors at both ends, and with a cable gland at the LPU end. Warning The metal screen of the drop cable is very sharp and may cause personal injury. ALWAYS wear cut-resistant gloves (check the label to ensure they are cut resistant). ALWAYS wear protective eyewear.
Chapter 5: Installation Installing the copper Cat5e Ethernet interface Test resistance in the drop cable Connect the bottom end of the copper Cat5e drop cable to a PTP drop cable tester and test that the resistances between pins are within the correct limits, as specified in the table below. If any of the tests fail, examine the drop cable for wiring faults. Order the PTP drop cable tester from the support website (http://www.cambiumnetworks.com/support).
Chapter 5: Installation Installing the PSU Installing the PSU Install the PTP 650/700 AC+DC Enhanced Power Injector (Cambium part number C000065L002). Refer to Installing the AC+DC Enhanced Power Injector on page 5-24. Caution As the PSU is not waterproof, locate it away from sources of moisture, either in the equipment building or in a ventilated moisture-proof enclosure. Do not locate the PSU in a position where it may exceed its temperature rating.
Chapter 5: Installation (a) Installing the PSU (b) and (c) Page 5-25
Chapter 5: Installation Installing a PTP-SYNC unit Installing a PTP-SYNC unit To install a PTP-SYNC unit (for TDD synchronization), use the following procedures: • Mounting the PTP-SYNC unit on page 5-26 • Connecting up the PTP-SYNC unit on page 5-27 • Powering up the PTP-SYNC installation on page 5-29 Caution The PTP-SYNC unit must be installed indoors in a non-condensing environment, otherwise it will be prone to water damage.
Chapter 5: Installation Installing a PTP-SYNC unit Figure 113 PTP-SYNC mounted on a wall Connecting up the PTP-SYNC unit Use this procedure to connect the PTP-SYNC to the AC+DC Power Injector, ODU, GPS receiver (if fitted), and LPU (if fitted). 1 Disconnect the power supply from the AC+DC Power Injector. 2 If using GPS, connect the cable from the GPS unit to the GPS/SYNC IN port.
Chapter 5: Installation Installing a PTP-SYNC unit 3 To link clustered PTP-SYNC units, connect the SYNC OUT port of the first PTP-SYNC to the GPS/SYNC IN port of the second PTP-SYNC in the chain. Repeat for subsequent PTP-SYNC units in the chain. 4 Connect the cable from the PSU to the PIDU IN port. A suitable 1 meter cable is included in the PTP-SYNC kit. 5 Connect the cable from the ODU to the ODU OUT port.
Chapter 5: Installation 6 Installing a PTP-SYNC unit Use a grounding cable to connect the ground stud of the PTP-SYNC to the master ground bar of the building, or to the rack ground bar. Powering up the PTP-SYNC installation Use this procedure to power up the PTP-SYNC installation. Caution Ensure that all cables are connected to the correct interfaces of the PTP SYNC unit and the GPS receiver (if used).
Chapter 5: Installation Installing a GPS receiver Installing a GPS receiver To install a GPS receiver as the timing reference source for PTP-SYNC, use the following procedures: • Mounting the GPS receiver on page 5-30 • Preparing the GPS drop cable on page 5-30 • Assembling an RJ45 plug and housing for GPS on page 5-31 • Assembling a 12 way circular connector on page 5-33 • Connecting the GPS drop cable on page 5-37 • Top grounding point for GPS adapter cable on page 5-38 • Installing and con
Chapter 5: Installation 4 5 Installing a GPS receiver Fit a suitable GPS connector to the top end of the drop cable: • If a GPS adapter cable kit is available, attach the plug housing and an RJ45 plug to the top end of the main GPS drop cable, as described in Assembling an RJ45 plug and housing for GPS on page 5-31. • If a GPS adapter cable kit is not available, fit a 12 way circular connector to the top end of the main drop cable as described in Assembling a 12 way circular connector on page 5-33.
Chapter 5: Installation 3 Installing a GPS receiver Install the RJ45 crimp plug. Start with tails over-length to assist insertion into load bar, then trim them to 5 mm (T). Connect the RJ45 pins to the following conductors (Superior Essex BBDGe colors): 4 Assemble plug housing: Depress the RJ45 locking tab (A). Slide the plug housing assembly (B) over the RJ45 plug. Tighten the sealing nut (C). This is easier to fully tighten when the plug housing is mated to the socket of the adapter cable.
Chapter 5: Installation Installing a GPS receiver Assembling a 12 way circular connector Use this procedure to connect the GPS drop cable to a 12 way circular connector. This procedure is only performed when a GPS adapter cable kit is NOT available. Note This procedure requires a soldering iron and solder. Caution The drop cable has solid copper conductors. There are a limited number of times each conductor can be bent before it fatigues and fails.
Chapter 5: Installation Installing a GPS receiver Figure 114 Inserting RJ45 pins into the 12 way circular connector 1 Prepare the drop cable end as follows: • Bare back the cable outer and copper screen to 50mm. • Bare back the cable inner to 17mm. • Un-twist the cable pairs. • Strip the individual conductors to 5mm.
Chapter 5: Installation Installing a GPS receiver 2 Fit the plug outer, associated boot, and boot insert. 3 Connect the socket contacts using either of the following techniques: 4 • Crimp: Crimp the socket contacts onto each of the conductors using the correct crimp tool and positioner, setting the wire size selector to “3” for 24AWG wire. • Solder: When soldering the socket contacts onto each of the conductors, ensure that there is no solder or flux residue on the outside of the contact.
Chapter 5: Installation Installing a GPS receiver Note If a contact is pushed in to the point where the locking mechanism engages before all of the contacts have been inserted it will limit the amount of room available to fit the remaining contacts, requiring harder bends to be applied. 6 Fit the plug to its shell. The plastic ring fits inside the rubber boot and ensures a tight fit when the plug body is clipped onto the plug shell. Be aware that the plug body is a hard push fit onto the plug shell.
Chapter 5: Installation Installing a GPS receiver Connecting the GPS drop cable Use this procedure to connect the GPS drop cable to the GPS unit and supporting structure. 1 If a GPS adapter cable is available, use it to connect the main GPS drop cable to the GPS unit: 2 If a GPS adapter cable is not available, connect the main GPS drop cable to the GPS unit via a 12 way circular connector.
Chapter 5: Installation Installing a GPS receiver Top grounding point for GPS adapter cable If a GPS adapter cable has been installed (Figure 115), use this procedure to ground the drop cable at the point where the solid screen is already exposed, and weatherproof both the ground cable joint and the RJ45 connection.
Chapter 5: Installation Installing a GPS receiver Figure 117 Wrapping PVC tape around the GPS adapter cable joint Figure 118 Grounding and weatherproofing example for GPS adapter cable Installing and connecting the GPS LPU Install and ground the GPS drop cable LPU at the building (or cabinet) entry point, and install the LPU-PTP-SYNC drop cable, as described in Install the bottom LPU on page 5-21. Connect this cable to the PTP-SYNC unit as described in Connecting up the PTP-SYNC unit on page 5-27.
Chapter 5: Installation Installing a NIDU Installing a NIDU To install a NIDU (for TDM), use the following procedures: • Mounting the NIDU on page 5-40 • Connecting the NIDU to the PSU, LAN and TDM cables on page 5-41 • Connecting the NIDU to a DC power supply on page 5-43 Mounting the NIDU Mount the NIDU in the equipment building, either in a rack or on a horizontal surface: • Racking mounting option: fix the NIDU to the rack mount using the M3 screws from the rack mount installation kit (Figure 1
Chapter 5: Installation Installing a NIDU Connecting the NIDU to the PSU, LAN and TDM cables Caution Always connect the NIDU to the Main PSU port of the ODU via the PSU. The TDM service will not operate if the NIDU is connected to the Aux or SFP port of the ODU. Caution If the ODU port has negotiated a link at 100BASE-T, the NIDU will not send or receive TDM data and will not bridge customer data traffic.
Chapter 5: Installation Installing a NIDU 4 Connect up to eight indoor Cat5e cables (with RJ48 connectors) from the NIDU (E1/T1 ports) to the local TDM transceivers: 5 Use an M5 nut and washer to connect the grounding cable lug to the NIDU ground bolt. Connect the other end of the grounding cable to the master ground bar of the building or rack.
Chapter 5: Installation Installing a NIDU Connecting the NIDU to a DC power supply Caution Do not power up the NIDU until site installation is complete, otherwise equipment may be damaged. Main and backup DC supplies The NIDU requires a 40 V – 60 V DC power supply. The NIDU DC interface provides inputs for a main and a backup DC power supply (Figure 120). The main DC supply (port 1) is mandatory, but the backup (port 2) is optional.
Chapter 5: Installation Installing a NIDU Using the DC power connector Use this procedure to connect the NIDU to the PTP 650/700 AC+DC Enhanced Power Injector (Cambium part number C000065L002) or to an independent DC supply with an optional backup DC supply: 1 Strip the two wires of the main DC supply cable and screw them into the first and second terminals of the DC power connector (Cambium part number C000065L044). The first terminal is negative (black wire) and the second is positive (red wire).
Chapter 5: Installation Installing a NIDU 3 Connect the main DC supply cable to its power source. If this supply is from the AC+DC Enhanced Power Injector, the DC Out first terminal is negative (black wire) and the second is positive (red wire): 4 Connect the backup DC supply cable to its power source. Using the PTP 800 AC-DC Power Supply Converter If a suitable AC mains supply is available, use the PTP 800 AC-DC Power Supply Converter (Cambium part number WB3622) to power the NIDU (Figure 121).
Chapter 5: Installation Installing an SFP Ethernet interface Installing an SFP Ethernet interface In more advanced configurations, there may be an optical or copper Cat5e Ethernet interface connected to the SFP port of the ODU. Refer to Typical deployment on page 3-2 for diagrams of these configurations.
Chapter 5: Installation Installing an SFP Ethernet interface Figure 122 ODU with copper Cat5e connections to all three Ethernet ports Page 5-47
Chapter 5: Installation Installing an SFP Ethernet interface Fitting the long cable gland Optical SFP interface: Disassemble the long cable gland and thread its components over the LC connector at the ODU end as shown below. Copper Cat5e SFP interface: Disassemble the long cable gland and thread its components over the RJ45 connector at the ODU end as shown below.
Chapter 5: Installation 4 Installing an SFP Ethernet interface Fit the parts into the body and lightly screw on the gland nut (do not tighten it): Optical Copper Inserting the SFP module To insert the SFP module into the ODU, proceed as follows: 1 Remove the blanking plug from the SFP port of the ODU: Page 5-49
Chapter 5: Installation 2 Installing an SFP Ethernet interface Insert the SFP module into the SFP receptacle with the label up: Optical 3 Copper Push the module home until it clicks into place: Optical Copper Page 5-50
Chapter 5: Installation 4 Installing an SFP Ethernet interface Rotate the latch to the locked position: Optical Copper Connecting the cable Caution The fiber optic cable assembly is very delicate. To avoid damage, handle it with extreme care. Ensure that the fiber optic cable does not twist during assembly, especially when fitting and tightening the weatherproofing gland. Do not insert the power over Ethernet drop cable from the PSU into the SFP module, as this will damage the module.
Chapter 5: Installation Installing an SFP Ethernet interface Optical Copper Fitting the gland 1 Fit the gland body to the SFP port and tighten it to a torque of 5.5 Nm (4.3 lb ft) 2 Fit the gland nut and tighten until the rubber seal closes on the cable.
Chapter 5: Installation Installing an SFP Ethernet interface Correct Incorrect Page 5-53
Chapter 5: Installation Installing an SFP Ethernet interface Removing the cable and SFP module Do not attempt to remove the module without disconnecting the cable, otherwise the locking mechanism in the ODU will be damaged. 1 Remove the cable connector by pressing its release tab before pulling it out: Optical 2 Copper Rotate the latch to the unlocked position.
Chapter 5: Installation Installing an Aux Ethernet interface Installing an Aux Ethernet interface In more advanced configurations, there may be a copper Cat5e Ethernet interface connected to the Aux port of the ODU. Refer to Typical deployment on page 3-2 for a diagram of this configuration.
Chapter 5: Installation Supplemental installation information Supplemental installation information This section contains detailed installation procedures that are not included in the above topics, such as how to strip cables, create grounding points and weatherproof connectors.
Chapter 5: Installation Supplemental installation information Creating a drop cable grounding point Use this procedure to connect the screen of the main drop cable to the metal of the supporting structure using the cable grounding kit (Cambium part number 01010419001). To identify suitable grounding points, refer to Drop cable grounding points on page 3-17. 1 Remove 60 mm (2.5 inches) of the drop cable outer sheath. 2 Cut 38mm (1.
Chapter 5: Installation Supplemental installation information 4 Tighten the cable ties with pliers. Cut the surplus from the cable ties. 5 Cut a 38mm (1.5 inches) section of self-amalgamating tape and wrap it completely around the joint between the drop and ground cables. 6 Use the remainder of the self-amalgamating tape to wrap the complete assembly. Press the tape edges together so that there are no gaps.
Chapter 5: Installation Supplemental installation information 7 Wrap a layer of PVC tape from bottom to top, starting from 25 mm (1 inch) below and finishing 25 mm (1 inch) above the edge of the self-amalgamating tape, over lapping at half width. 8 Repeat with a further four layers of PVC tape, always overlapping at half width. Wrap the layers in alternate directions (top to bottom, then bottom to top).
Chapter 5: Installation Supplemental installation information Weatherproofing an N type connector Use this procedure to weatherproof the N type connectors fitted to the connectorized ODU and external antenna (if recommended by the antenna manufacturer). 1 Ensure the connection is tight. A torque wrench should be used if available: 2 Wrap the connection with a layer of 19 mm (0.75 inch) PVC tape, starting 25 mm (1 inch) below the connector body.
Chapter 5: Installation Supplemental installation information 4 Cut a 125mm (5 inches) length of rubber tape (self-amalgamating): 5 Expand the width of the tape by stretching it so that it will wrap completely around the connector and cable: 6 Press the tape edges together so that there are no gaps.
Chapter 5: Installation 8 Supplemental installation information Repeat with a further four layers of 19 mm (0.75 inch) PVC tape, always overlapping at half width. Wrap the layers in alternate directions: • Second layer: top to bottom. • Third layer: bottom to top. • Fourth layer: top to bottom. • Fifth layer: bottom to top. The bottom edge of each layer should be 25 mm (1 inch) below the previous layer.
Chapter 5: Installation Supplemental installation information Replacing PSU fuses The AC+ DC Enhanced Power Injector contains two replaceable fuses. These fuses protect the positive and negative grounded DC input voltages. If an incorrect power supply (that is, not in the range 37V to 60V DC) is connected to the DC input terminals, one or both fuses may blow. Both fuses are 3 Amp slow-blow, for example Littlefuse part number 0229003.
