Navini Networks, Inc. Ripwave Base Station I&C Guide Bundle Cables for the TTA Configuration The bundle cables are manufactured by CommScope in 5 m increments. On the end that attaches to the antenna, the RG-6 or RG-11 bundle cables come with a weatherized “boot” and nine the N-type Male connectors in place.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install Connectors on Cables Install connectors on both ends of each cable. For LMR 600 cables, install EZ-600 N-type male connectors. For LMR 400 cables, install EZ-400 N-type male connectors. Steps for installing both types of connectors can be found in Appendix J. For reference, Appendix H also provides a list of vendors who can make cables. The Cal and RF cables in the Combo and Split Chassis configuration have N-type male connectors at both ends.
Navini Networks, Inc. Ripwave Base Station I&C Guide Sweep RF Cables Sweep each individual cable, the RFS (8) and CAL main feeder and jumper cables, to check for line loss. Follow the instructions for sweeping the cables provided in Appendix K entering the results in the RFS System Test Form. Check continuity of the data/power cable. When finished, cover the cable connectors for protection until they are connected to the RFS or GPS.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install the BTS Check all regulatory standards (refer to Chapter 1, Page 8 “Regulatory Information”) prior to installation. Install Mounting Rack or Enclosure The BTS mounting rack (Figure 22) or enclosure is to be installed in compliance with applicable portions of the National Electrical Code (NEC), articles 800 and 810. You will need to adhere to local installation standards, as well as Navini Networks standards and procedures.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install Chassis There are three types of BTS chassis: Combo, Split and TTA (Figure 23). Prior to Ripwave Release 1.19 (2.4 GHz systems), only the Combo Chassis was used, but with the licensed bands (2.3, 2.5, and 2.6 GHz systems) it is allowed to transmit at higher levels of power, which required better air circulation. This resulted in the introduction of the Split Chassis.
Navini Networks, Inc. Ripwave Base Station I&C Guide Connect Input Power Next, connect the power supply to the BTS card cage (Figure 24). The gauge of the wire is determined by the length of the run and by NEC/CEC standards (refer to Chapter 1, Page 8 “Regulatory Information”). Use a 60-amp circuit breaker when running the line. Terminate both of the input power wires and the ground wire with a ¼- inch terminal lug.
Navini Networks, Inc. Ripwave Base Station I&C Guide 2. Slide on heat-shrink tubing 1. Install UL-Listed Terminals 3. Apply heat to shrink tubing 4. Install power cables Cooling Fans Visually inspect all fans to ensure that they are operating properly.
Navini Networks, Inc. Ripwave Base Station I&C Guide Connect BTS to Ground Connections All connections need to be checked before power is applied to the system. At a minimum, perform the following: • • Ensure continuity across all ground connections. Ensure an open connection from the power supply output (positive input to the BTS card cage) to frame ground. Check all regulatory standards (Chapter 1, Page 8 “Regulatory Information”) related to power and grounding.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install GPS Antennas Check all regulatory standards (refer to Chapter 1, Page 8 “Regulatory Information”) prior to installation. As mentioned earlier, the model of GPS antenna used with the Ripwave Base Station is the VIC 100, as shown in Figure 27. Mount each GPS antenna module, run the cable through the pipe clamp mount. Connect the cable to the GPS antenna, then, weatherize the connection.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install the RFS Check all regulatory standards (refer to Chapter 1, Page 8 “Regulatory Information”) prior to installation. Now that the BTS is in place, the RFS is readied for installation. Follow the Panel or Omni Antenna information and procedures below. Reference the specifications in Appendix D. Also reference the RFS List/Hoist Method in Appendix X.
Navini Networks, Inc. Ripwave Base Station I&C Guide Omni Antenna An Omni antenna has 2 degrees of fixed electrical downtilt Set the Azimuth Position the RFS on the mounting pole or structure, ensuring that the antenna is pointing in the proper azimuth direction determined by the engineering study. For an omni, the first antenna element must face East (Figure 30). The azimuth direction is stated in degrees from true North.
Navini Networks, Inc. Ripwave Base Station I&C Guide The RFS has ten cable connectors on the bottom of the unit. Eight are antenna connections, with the connectors alternately numbered from right to left as shown in Figure 33. The two connectors in the middle are for antenna calibration and data/DC power connections. Install surge protectors on nine (9) of the RFS connectors – the eight antenna connectors and the calibration connector.
Navini Networks, Inc. Ripwave Base Station I&C Guide Install Cables Between the RFS & BTS Connect all of the cables – the eight antenna cables, the calibration cable and the data/power cable – to the surge protectors on the RFS. For ease of installation, install the cables from the inside out. Ensure that the proper cable is connected to the proper antenna (Figure 35). Torque the RF cable connectors to 20-24 inch-pounds.
Navini Networks, Inc. Ripwave Base Station I&C Guide Connect Ground Wires to the Ground Buss Bar Connect the ground wires on the cables to the ground buss bar using the hardware supplied with the grounding kit. Connect the ground stud on the RFS to the ground buss bar. Use a ¼-inch terminal lug to connect the ground wire to the ground stud on the RFS. Connect the ground buss bar to earth ground. Grounding from copper point to copper point shall be less than 1 ohm.
Navini Networks, Inc. Ripwave Base Station I&C Guide Weatherize the RFS Cable Connectors Weatherize all ground wire connections exposed to weather using electrical tape and butyl mastic tape. Follow the instructions supplied with the weatherproofing kit. Examples are shown in Figure 37 and 38.
