Version 1.
Link CX-24 User’s Manual This document applies to the YDI Wireless (YDI) release of the Link CX-24 product line and to all subsequent versions and releases of the hardware or software unless otherwise indicated in a new version or an update package for this edition. The products described in this document are products of YDI Wireless or its licensers. YDI Wireless reserves the right to make changes to any products described herein at any time without notice.
Link CX-24 User’s Manual MICROWAVE RADIO RADIATION WARNING When installed properly, the Link CX-24 radio equipment complies with the limits for human exposure to radio frequency (RF) fields adopted by the Federal Communications Commission (FCC).
Link CX-24 User’s Manual TABLE OF CONTENTS Section 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Section 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.13 2.14 2.15 2.16 2.17 Installation 12 Monitoring and Trend Analysis 43 Built-In Web Server Interface...................................................................................................... 43 SNMP Network and Element Management Systems ................................................................. 43 Section 4 4.1 4.2 4.3 4.4 4.
Link CX-24 User’s Manual Appendix D - Grounding and Lightning Protection 58 D-1 Overview ........................................................................................................................................ 58 D-2 Grounding ...................................................................................................................................... 58 D-3 Lightning Protection .......................................................................................................
Link CX-24 User’s Manual Figure 2.13 – Setting the Link CX-24 Polarization – Vertical Polarization Shown ............................... 31 Figure 2.14 – Detail Showing Assembly of Pole Mounting Bracket to Unit (Vertical Polarization) ...... 32 Figure 2.15 – Attaching the Link CX-24 Unit to the Pole...................................................................... 33 Figure 2.16 – Connecting an Earth Ground to the Link CX-24............................................................. 34 Figure 2.
Link CX-24 User’s Manual TABLES Table 1.1 – Link CX-24 Models .............................................................................................................. 4 Table 1.2 – Link CX-24 Interface Connectors and Indicators................................................................. 6 Table 2.1 – Maximum Power Output by Model Configuration.............................................................. 16 Table 2.2 – Radio Link Planning Worksheet ...............................................
Link CX-24 User’s Manual Section 1 Overview 1.1 Description This manual is intended for the technical personnel who will install and operate the Link CX-24. Such personnel are typically experienced and skilled technicians familiar with on site, physical installation and connection of equipment, including maintenance work. It is also intended for system administration personnel performing initial configuration and subsequent system reconfiguration, as well as current system maintenance activities. 1.
Link CX-24 User’s Manual Figure 1.1 – Link CX-24 Power Supply 1.4 Applications The Link CX-24 product line is designed to serve the following communications markets: • • • • • 1.5 Internet Access and Backhaul Systems: Used by Internet Service Providers (ISPs). Private Networks: Wireless Bridged LANs and WANs. PCS/PCN and Cellular Networks: High-speed links between base stations. Wireless Local Loop Networks: Fixed wireless, used by Local Exchange Carriers (LECs).
Link CX-24 User’s Manual Figure 1.2 – Typical Radio Link Configurations Because the Link CX-24 offers both high and low channels in a single band, and can be installed with horizontal or vertical polarization, up to four Link CX-24 radios can be mounted at each hub, or node, to form part of a star or mesh network. See Figure 1.3. Figure 1.3 – Link CX-24 Star Network This is one sample configuration. Many other combinations of channels and frequencies are possible.
Link CX-24 User’s Manual 1.6 Features The Link CX-24 offers the following features: • • • • • • • • • • • • • • Robust all-outdoor enclosure. Integral antenna. Sturdy radio mounting systems for quick, accurate and reliable integral antenna alignment. Operates in the license-exempt 24.05-24.250GHz (24GHz) band. Full-duplex transmission: DS-3 (DSX-3, per Bellcore GR-499-CORE) Ethernet 10/100Base-T (per IEEE 802.3) Easy configuration, installation, operation, and maintenance.
Link CX-24 User’s Manual 1.7.4 Mounting and Antenna Alignment To ensure proper mounting and antenna alignment, YDI sells a mounting bracket designed for use with the Link CX-24. The single bracket mounts one Link CX-24. The bracket is designed to provide rugged mounting for the Link CX-24, while allowing fine adjustment for antenna alignment. 1.7.5 Interface Connectors and Indicators See Figure 1.4 for a view of the Link CX-24 external connectors and indicators.
Link CX-24 User’s Manual Table 1.2 – Link CX-24 Interface Connectors and Indicators No.
Link CX-24 User’s Manual 1.7.6 Cables To ensure longevity in an outdoor environment, YDI sells various cables designed for use with the Link CX-24.YDI offers the following weather-resistant cables: • • • DS-3, Ethernet data cables and the power cables are offered in 25 m (82 ft.), 50 m (164 ft.), and 100 m (328 ft.) lengths. A 6 m (19.7 ft.) Ethernet cable is available to route the Ethernet signal between two Link CX-24 in the same location, or when you are configuring the Link CX-24 from a Craft PC.
Link CX-24 User’s Manual 1.7.8 Configuration, Operation, and Monitoring The Link CX-24 and radio link are configured, operated and monitored through one of five user interfaces. The five interfaces are: • • • • • 1.7.9 A built-in web server GUI hosted by the Link CX-24, which can be accessed by any local or remote computer equipped with a web browser. This is the interface most operators will use to interact with the Link CX-24.
Link CX-24 User’s Manual communicates with the Link CX-24 using TCP/IP (Transmission Control Protocol/Internet Protocol) and HTTP (Hyper Text Transfer Protocol). The NMS data transfer between the manager and the agents is accomplished using either polling or trapping techniques. Polling The NMS polls each Link CX-24 SNMP agent at specific intervals. These are set according to user requirements during SNMP NMS configuration.
Link CX-24 User’s Manual Parameter configuration is terminal-oriented. Every configuration session deals with the Link CX-24 as accessed by its particular IP address. Some of the parameters, such as RF channel number, link ID, etc. affect the Link CX-24s on both ends of the radio link. Special care should be taken to activate the new parameter values consistently on both ends of the radio link.
Link CX-24 User’s Manual 1.8 Typical Applications Link CX-24 gives the user great flexibility in setting up point-to-point radio links on a very cost effective basis, because it avoids unnecessary outlays in expensive leased lines or fiber optic land-based lines. Low cost of ownership makes return on investment (ROI) attractive compared to leased lines.
Link CX-24 User’s Manual Section 2 Installation Safety Warning CAUTION 2.1 This antenna/transmitter device must be fixed-mounted on outdoor permanent structures with a separation distance of at least 2 meters (6.56 feet) from all persons. Users and installers must adhere to the antenna installation instructions and transmitter operating conditions in order to comply with the FCC’s RF exposure requirements. Introduction The Link CX-24 is intended for professional installation only.
Link CX-24 User’s Manual direct signal path. The Fresnel zone surrounds the direct signal path, so it affects objects to the side of the path as well as objects directly in the path. For a calculation of the Fresnel Clearance Zone, please refer to: http://www.ydi.com/calculation/fresnel-zone.php. Multipath Fading: See Figure 2.1.
Link CX-24 User’s Manual protection. If the mounting point described above provides adequate lightning protection, the Link CX-24 radio will still need a good earth ground to a bare-metal earth ground. Refer to Appendix D for detailed grounding and lightning protection recommendations. Cable Routing: The Link CX-24 DS-3, and/or Ethernet data cables connect associated external equipment to the Link CX-24 radio.
Link CX-24 User’s Manual Figure 2.2 – Typical EMS/NMS Ethernet Connections 2.5 Planning DS-3 Links The Link CX-24 DS-3 version uses paired 75 Ohm cables with male TNC connectors for the transmit and receive data from external DS-3 equipment. YDI sells 25 m (82 ft.), 50 m (14 ft.), and 100 m (328 ft.) DS-3 cables with the correct connectors for these links, as described in Section 1.7.6. 2.6 Power Planning YDI sells 25 m (82 ft.), 50 m (14 ft.), and 100 m (328 ft.
Link CX-24 User’s Manual 2.7.1 Maximum Link CX-24 Power Output The Link CX-24 can be ordered in two different configurations. Table 2.1 shows the maximum power output for each case. Table 2.1 – Maximum Power Output by Model Configuration Model CX-DS3-24-HI CX-DS3-24-LO CX-ETH-24-HI CX-ETH-24-LO 2.7.2 Frequency Band Link Carries Antenna Max Tx Power 24.05-24.250GHz -Per FCC Regulations DS-3 (45 Mbps) Integral 0 dBm +34.5 dBi = +34.5 dBm Average EIRP 24.05-24.
Link CX-24 User’s Manual Table 2.2 – Radio Link Planning Worksheet (continued) Link CX-24 - High Band Link CX-24 - Low Band Channel 1 High Band, Tx– 24.212GHz/ Rx– 24.072GHz (default) Channel 1 Low Band, Tx– 24.072GHz/ Rx– 24.212GHz Channel 2 High Band, Tx– 24.228GHz/ Rx– 24.088GHz Channel 2 Low Band, Tx– 24.088GHz/ Rx– 24.228GHz Transmit Attenuation (default = Disabled) Enabled Enabled Maximum Transmit Power (refer to Section 2.7) __ dBm Automatic Tx Power Control (refer to Section 2.
Link CX-24 User’s Manual Table 2.2 – Radio Link Planning Worksheet (continued) Link CX-24 - High Band Link CX-24 - Low Band ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___ ___.___.___.___ Any (default) -OR___.___.___.___ ___.___.___.___ ___.___.___.___ Any (default) -OR___.___.___.___ ___.___.___.___ ___.___.___.___ Any (default) -OR___.___.___.___ Any (default) -OR___.___.___.
Link CX-24 User’s Manual YDI disclaims any liability or responsibility for the results of improper or unsafe installation practices. This device is to be exclusively used for fixed point-to-point operation with directional antennas. Before you continue with this installation, make sure you have a filled-out copy of the Radio Link Planning Worksheet found in Section 2.8. Note: The Link CX-24 electronics have been designed to be maintenance free, and the outdoor components are very rugged.
Link CX-24 User’s Manual Table 2.3 – Link CX-24 Radio Orderable Parts Item Description 1 Link CX-24 Radio, Integral Antenna 2 Link CX-24 Mounting Bracket Remarks All available in 82 ft (25 m), 164 ft (50 m), or 328 ft (100 m) All available in 82 ft (25 m), 164 ft (50 m), or 328 ft (100 m) 3A Two each DS-3 Payload Data Cables (see Table A.1), One 10/100 Ethernet Control Cable (see Table A.2), and One DC Power Cable (see Table A.
Link CX-24 User’s Manual 2.9.4 Installation Tools and Materials Tools The user should have at least the following tools on hand before installing the Link CX-24 radio: Table 2.
Link CX-24 User’s Manual 2 Turn off power to the Craft PC to prevent damage to the Ethernet port receive circuitry. 3 Using the factory-supplied Ethernet cable, connect an Ethernet-port equipped Craft PC to the Link CX-24 as shown in Figure 2.4a. 4 MAKE SURE the antenna is pointing away from your work area before you apply power to the Link CX-24. 5 Using the factory-supplied power cable, connect the power supply to the Link CX-24 as shown in Figure 2.4b for a positive-ground system, or Figure 2.
Link CX-24 User’s Manual Figure 2.4b – Link CX-24 Positive-Ground Power Connections To Craft PC + White - - Black Red Wire is Connected to Ground + + White Figure 2.4c – Link CX-24 Negative-Ground Power Connections To Craft PC - Version 1.
Link CX-24 User’s Manual 2.10.2 Logging In to the Link CX-24 Built-In Web Server After you have connected and powered up the Link CX-24 and the Craft PC as described in Section 2.10.1, use the web browser on the Craft PC to log into the Link CX-24 built-in web server as follows: 7 Launch the web browser per the manufacturer’s instructions. 8 Open the web page at Ethernet address http://10.0.0.2/ (transmit low models) or http://10.0.0.3/ (transmit high models) in the web browser.
Link CX-24 User’s Manual Figure 2.6 – Typical Ethernet Link CX-24 Monitor Web Page 11 On the Monitor page, select the link for the Commission Radio page. The web browser displays the Commission Radio page, similar to the samples shown in Figure 2.7 and Figure 2.8. Figure 2.7 shows a typical DS-3 Link CX-24 Commission Radio page, while Figure 2.8 shows a typical Ethernet Link CX-24 Commission Radio page. Figure 2.7 – Typical DS-3 Link CX-24 Commission Radio Web Page Version 1.
Link CX-24 User’s Manual Figure 2.8 – Typical Ethernet Link CX-24 Commission Radio Web Page Note: The Link CX-24 is shipped with Tx Attenuation disabled. Make sure this setting remains unchanged until the rest of the Link CX-24 configuration steps are completed. 12 Using the data entered on the filled-out copy of the Radio Link Planning Worksheet from Chapter Three, select the planned configuration choices available on this page, except the final Tx Attenuation and the Automatic Tx Power Control values.
Link CX-24 User’s Manual Figure 2.9 – Typical DS-3 Link CX-24 Commission Manager Web Page Version 1.
Link CX-24 User’s Manual Figure 2.10 – Typical Ethernet Link CX-24 Commission Manager Web Page 2.10.3 Testing a DS-3 Link CX-24 17 On the Commission Manager Interfaces page, select the link for the Test page. The web browser displays the Test page, similar to the sample shown in Figure 2.11. 18 On the Test page, select the BERT + Radio Loop-back test, and select One Minute. Select Start Test to verify the internal Link CX-24 circuitry before installation.
Link CX-24 User’s Manual Figure 2.11 – Typical Link CX-24 DS-3 Test Web Page 2.10.4 Testing an Ethernet Link CX-24 21 Connect an external Ethernet device to the ETHERNET 1 or 2 port on the Link CX-24. 22 Use the external Ethernet device to Ping the Link CX-24 at the local Ethernet address configured in Step 12. Verify that the Link CX-24 responds to the Ping. When the Ping test is complete, the Link CX-24 has been configured, and the internal Ethernet circuitry of the Link CX-24 has been tested.
Link CX-24 User’s Manual After completing this section, the Link CX-24 radio is configured and partially tested, and is ready to install as described in Section 2.11. 2.11 Mounting the Link CX-24 The Link CX-24 radio is a sealed unit that installs on a pole. Notes: A pole is not supplied with the Link CX-24 and should be in place before attempting installation. The body performing the installation is the responsible for preventing any contact or induction with mains lines at any voltage.
Link CX-24 User’s Manual Figure 2.13 – Setting the Link CX-24 Polarization – Vertical Polarization Shown 29 Install the pole-mount bracket as described below a) Fit the adaptor bracket (X) to the back of the Link CX-24 unit noting polarization requirements as discussed above, by aligning the four mounting studs on the back of the unit with the adaptor bracket holes and securing to the unit using four M5 nuts, flat washers, and lock washers, as shown in Figure 2.14. Tighten hardware (four places).
Link CX-24 User’s Manual Figure 2.14 – Detail Showing Assembly of Pole Mounting Bracket to Unit (Vertical Polarization) Note polarization Serrated Edges A X 2.11.2 Attaching the Link CX-24 to the Pole 30 Attach the Link CX-24 to the pole as described below: a) Fasten the Link CX-24 unit to the pole using pole clamp (B) and two M8 x 70 bolts, lock washer, and flat washer, as shown in Fig 2.15. It may be necessary to use two M8 x 40L bolts if you are fastening the Link CX-24 to a 1.75” diameter pole.
Link CX-24 User’s Manual Figure 2.15 – Attaching the Link CX-24 Unit to the Pole A B Slots for optional metal straps 2.13 Completing the Link CX-24 Installation The Link CX-24 is now mounted on the pole, and coarse-aligned with the far-end antenna. Continue with the following steps to complete the Link CX-24 installation. 2.13.
Link CX-24 User’s Manual the Link CX-24, it starts transmitting. 36 Connect the power, DS-3 and/or Ethernet cables to the Link CX-24. See Figure 1.3 and Table 1.2 for the locations and descriptions of the Link CX-24 connectors. 37 Check the LEDs for proper operation. See Figure 1.3 and Table 4.2 for the locations and descriptions of the Link CX-24 LEDs: • When power is properly applied to the Link CX-24, the PWR/LCL ALARM LED will be on.
Link CX-24 User’s Manual incursion and damage. For all exposed connectors, including those between an external antenna and the Link CX-24, perform the following: 39 Wrap each connector with vinyl or plastic electrical tape. 40 Wrap the vinyl or plastic electrical tape with butyl rubber amalgamating tape to prevent moisture from permeating the connector. 41 Wrap the butyl rubber amalgamating tape with vinyl or plastic electrical tape. Continue with Section 2.
Link CX-24 User’s Manual For this reason, it is important that a wide sweep in both azimuth and elevation is made in order to identify these false peak RSSI readings so to zero in on the true peak alignment reading due to the main antenna beam. Figure 2.
Link CX-24 User’s Manual The Link CX-24 is now mounted and aligned. Continue with Section 2.15 for acceptance tests. 2.15 Acceptance Testing This section describes the tests used to verify that the Link CX-24 data input circuitry, near-end Link CX24 radio, radio link, and far-end Link CX-24 radio are installed properly and operating correctly. 50 Verify that the physical installation is correct. Use Table 2.5 to sign off the individual checks. Table 2.