WJ Broadband Fixed Wireless System Transceiver Installation and Replacement Instructions Revision Date: June 19, 2000 To be used with: $X1122 MADS High Power Point-to-Multi point Transceiver SX1124 MDSE High Power Point-to-Multi point Transceiver WJ Broadband Fixed Wireless System Transceiver Replacement Instructions
WJ Broadband Fixed Wireless System Transceiver Installation and Replacement Instructions Product Numbers: $X1122, SX1124. ‘This document explains how to install, remove, or replace the wireless transceiver component of a broadband fixed wireless system. It includes instructions for powering down the system, removing an installed transceiver, and installing a new transceiver.
Wireless Transceiver Overview The wireless transceiver (often referred to as the outdoor unit or ODU) is the control and data interface to the indoor router subsystems. It provides up/down conversion for IF to RF frequencies and power amplification. The wireless transceiver consists of the following components: + RF head = Connector port for IF input/output, control, and test * Connector port for antenna » Ground lug Figure 1 shows the connectors on the wireless transceiver, and Table | describes their use.
Installation Prerequisites This section provides a list of parts and tools you need to install, remove, or replace a wireless transceiver ai the antenna site. This section also includes safety and EDS-prevention guidelines to help you avoid injury to yourself and damage to the equipment. Parts and Tools You need the following tools and parts to install, remove, or replace the transceiver. If you need additional equipment, contact a service representative for ordering information.
Electrical Equipment Guidelines i a Nd Follow these basic guidelines when working with any electrical equipment: + Disconnect all power and external cables before moving a chassis. « Do not work alone if potentially hazardous conditions exist, * Never assume that power has been disconnected from a circuit; always check. * Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
£ Antenna Installation Instructions: FCC RF Exposure Limits The WJ SX1122 and SX1124 transceivers, used in conjunction with 18 and 24 dBi gain antennas, are to be employed in point -to point applications only Antennas used for these transmitters shall be professionally installed on permanent structures for outdoor operations. The installer is responsible for ensuring that the systems using high-gain, directional antennas are used exclusively for fixed, point-multiplication operations.
Installing the Wireless Transceiver This section provides instructions for installing the transceiver on the antenna mast. Note These instructions apply to the transceiver manufactured and supplied by WIJ. Transmit and Receive Frequencies The SX1122 and SX1124 are provided with the transmit frequency and the receive frequency set at the factory. Each model can be supplied with transmit on the high frequency band or transmit on the low frequency band.
Figure Attaching the Adapter Plate to the Mounting Bracket. 3/8” flat washer, split washer, and nut, Step Repeat this process for the other side of the mounting bracket. Step 4 Install shock mounts on to the bracket assembly (2 places) using the #6 hardware supplied. ‘Tighten all screws. (See Figure 8.
Step 5 Install the bracket assembly shown in Figure 8 to the lower portion of the wireless transceiver shown in Figure 9 using the 5/16” hardware supplied. Counter torque may need to be applied to the cup of the shock mount when tightening the bolt. Tighten bolts with 7 to 8 foot-pounds of torque.
Step 6 Place a 3/8” bolt through an adapter plate and then install the shock mount on to the adapter plate using #6 hardware and tighten, The 3/8” bolt will be loose but captive in the assembly. Assemble the other shock mount as well. (See Figure 10.) Figure 16 Assembling the Shock Mount Assembly #6 bolt, flat washer, lock washer Step 7 Install the shock mount assemblies on to the holes at the top of the transceiver using 5/16” hardware. Tighten bolts with 7 to 8 foot-pounds of torque.
Step 8 Select the appropriate size U-belt from the mounting kit and attach the remaining mounting bracket to the antenna ast using 3/8” hardware and tighten. (See Figure 12.) If necessary, use the spacers provided. This will be the bracket that holds the top of the transceiver. Figure 12 Attaching the Top Mounting Bracket to the Antenna Mast > BR Antenna mast Sp scar (splice) @ Step 8 Using a wrench, attach the transceiver to the top-mounting bracket using 3/8” nut, flat washer, and lock washer.
Figure 13 Attaching the Transceiver to the Pole a} Loosely install 5/16” nut, and washers. b.) Spin the 5/16” mounting bolt until the head of the bolt locks in place. c.} Tighten the 5/16” nut while the bolt is locked in place, Caution Da not leave the transceiver unattended until all the fasteners have been tightened. Step 10 Tighten all fasteners to 15 foot-pounds of torque.
Cabling the Wireless Transceiver Warning Ensure that the power/breaker switches (on the power feed panel) for both the Main and Diversity transceiver are in the OFF position, Attaching the Ground Lug A ground lug kit is provided with the transceiver. Use the following steps to attach the ground lug to the transceiver chassis. Step 1 Attach an approved ground wire to the ground lug. Step 2 Locate the two ground lug threaded holes on the lower right mounting bracket of the transceiver chassis.
weatherproofing on all outdoor RF and IF cable connections to protect them against long-term degradation from weather effects. This is typically done by applying a suitable seal to the N-type connectors after they have been connected and verified. Do not use common electrical tape or similar types of tape because the resulting seal is not adequate, these types of tape do not withstand sunlight well, and they leave a gummy residue when removal became necessary \ Warning Cisco and WJ strongly recommend that y
Connecting the IF/DC Cable Connect the IF cable to the transceiver connector marked IF/DC CONTROL INPUT. connection with an adjustable wrench or pliers. Figure 24 IF/DC Cable Connection WJ Broadband Fixed Wireless System Transceiver Replacement Instructions .
Connecting the Antenna Cable Connect the Antenna cable to the transceiver connector marked ANTENNA. Tighten the connection with an adjustable wrench or pliers. Consult the instructions provided by your antenna manufacturer for additional instructions on installing antennas. Table 2 provides safe, minimum distances an operator should be from an antenna when it is transmitting. Figure Antenna Cable Connection A Warning After cabling, reinstate power.
Removing and Replacing the Wireless Transceiver Follow these instructions to remove and replace the wireless transceiver.
Time saver To make replacement easier, be sure all cables are labeled. Ste pl Remove the RF cable leading to the antenna. Step Remove the IF/DC/Control cable. Step Remove the screws from the ground lug. (See Figure 26.
Removing the Wireless Transceiver from the Antenna Mast Follow these steps to remove the wireless transceiver from the antenna mast: Ste pl Remove the hardware securing the bottom U-bolt to the mast (see Figure 27), and remove the U-bolt from the mast. Figure 27 Removing the Bottom and Top U-obits Step Leaving the hex bolts in place, carefully remove the hex nuts, lock washers, and flat washers from the back of both sides of the top mounting bracket. (See Figure 27.
Replacing the Wireless Transceiver Replacing the wireless transceiver involves the following tasks: Mounting the Wireless Transceiver on the Antenna Mast Step 1 Attaching the Cables Step 2 Reinstating the Power Remounting the Wireless Transceiver on the Antenna Mast Mount the replacement transceiver on the mast using the instructions in the section of this document called Installing the Wireless Transceiver. Attaching the Cables Use these steps to attach the cables to the new wireless transceiver.
Reinstating the Power Use these steps to reinstate the power. Step? Reconnect the DC power source. Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position. Step Switch the wireless transceiver power/breaker switches to the ON position. This completes the procedure for removing or replacing the wireless transceiver in a Cisco broadband fixed wireless system.
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