Cisco Systems BTS-R3 Broadband Data BTS User Manual chpt 2b 40 00047 03 F I C TTA

Cisco Systems, Inc Broadband Data BTS chpt 2b 40 00047 03 F I C TTA

Manual 3

Navini Networks, Inc. Ripwave Base Station I&C Guide Chapter 2b Part #40-00047-03 Rev F v1.0 (TTA) 55 October 23, 2003 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. Refer to Appendix I for manufacturers of outdoor BTS enclosures. Figure 22: BTS Mounting Racks Combo ChassisSplit ChassisTTA ChassisCombo ChassisSplit ChassisTTA Chassis
Ripwave Base Station I&C Guide Navini Networks, Inc. Chapter 2b 56 Part #40-00047-03 Rev F v1.0 (TTA) October 23, 2003 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. The recently introduced Tower Top Antenna (TTA) chassis, consists only of a digital shelf because the PAs are incorporated into the base of the RFS. Notice that the TTA digital shelf includes 8 new additional cards called RF Controllers or RFC. CAUTION! - Please contact Navini Technical support before attempting to exchange cards between chassis of different type and frequency to verify compatibility. Figure 23: BTS Chassis Combo ChassisSplit ChassisTTA ChassisRF/PA ShelfDigital Shelf(Panel separatesRF and DigitalShelves)(PAs are in the RFS)Combo ChassisSplit ChassisTTA ChassisRF/PA ShelfDigital Shelf(Panel separatesRF and DigitalShelves)(PAs are in the RFS)
Navini Networks, Inc. Ripwave Base Station I&C Guide Chapter 2b Part #40-00047-03 Rev F v1.0 (TTA) 57 October 23, 2003 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. Assuming a +24 VDC power supply, connect the +24 VDC input power connections and the +24 VDC return wires to the BTS card cage. WARNING! Ensure that the power is off before connecting the input power wires to the BTS input terminals. If the input power is 120 VAC, plug the two power-supply input cables into 120 VAC outlets, and turn on the circuit breaker on the power supply. If the input power is 24 VDC, check for +24 VDC across the input terminals of the BTS card cage. If +24 VDC is not present across the input terminals, check all input power wiring for proper connections. Also, check the power supply for proper operation and the fuses for continuity. When finished, turn off the power supply. Figure 24: Split Chassis Power Connections BTS +24 VDC Input TerminalsGround LugBTS +24 VDC Input TerminalsGround Lug
Ripwave Base Station I&C Guide Navini Networks, Inc. Chapter 2b 58 Part #40-00047-03 Rev F v1.0 (TTA) October 23, 2003 Power-interconnect wires between the power supply/rectifier and the digital chassis must have heat shrink tubing applied over the barrel of the terminal lugs after crimping the wire. Refer to Figure 25 below. Figure 25: Power-Interconnect Wires 1. Install UL-Listed Terminals 2. Slide on heat-shrink tubing3. Apply heat to shrink tubing 4. Install power cables1. Install UL-Listed Terminals 2. Slide on heat-shrink tubing3. Apply heat to shrink tubing 4. Install power cables
Navini Networks, Inc. Ripwave Base Station I&C Guide Chapter 2b Part #40-00047-03 Rev F v1.0 (TTA) 59 October 23, 2003 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. All power and ground conductors must be mechanically supported to avoid strain of the wires and connection points. Figure 26: Preparing Power and Grounding Connector Tips Connect Chassis Alarms The chassis contains two connectors that are used to send alarm indications to the BTS when the BTS is housed in an outdoor enclosure. One of the connectors, labeled “CABINET ALARM”, is used to trigger alarm conditions that occur within the external chassis. The second connector, labeled “BBU”, is used to process alarms from a battery backup unit. Refer to Appendix P for instructions on connecting the alarms.
Ripwave Base Station I&C Guide Navini Networks, Inc. Chapter 2b 60 Part #40-00047-03 Rev F v1.0 (TTA) October 23, 2003 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. Secure the antenna module to the pipe clamp mount using the captive mounting hardware. Install the GPS antenna module and the pipe clamp mount to the mounting pipe and tighten the two mounting screws. Figure 27: VIC 100 GPS The mounting location for the GPS antenna is determined during the site survey. When installing, ensure that the following requirements are met: ?? The GPS antenna is installed within 100 feet of the BTS. ?? The GPS antenna is located to provide the widest view of the sky (objects such as buildings or trees can interfere with signals from the satellite). Mounting ScrewsAntennaMounting Hardware Mounting ScrewsAntennaMounting Hardware

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