NTXXXXXX Internet Broadband Wireless Access Internet BWA System 3200 User guide Draft Rel 3.0 October 2000 What’s inside...
Copyright 2000 Nortel Networks, All Rights Reserved The information contained herein is the property of Nortel Networks and is strictly confidential.
iii Contents 0 About this document v System description 1-1 Overview 1-1 Frequency band 1-1 Capacity 1-1 Frequency plan 1-2 System features 1-2 Equipment layout and main assemblies 1-3 Terminal signal flow 1-4 System interfaces 1-5 Interface cable pins 1-6 Hand-held terminal interface 1-6 Ordering Information 2-1 Detailed equipment codes 2-1 Technical specifications 3-1 Mechanical and environmental specifications 3-1 Equipment interface specifications 3-2 Frequency plan specifications 3-2 Syste
iv Contents Hierarchy of the HHT menus 5-3 Functions of the HHT keypad keys 5-4 Parameters for the Near Radio menu 5-5 Control submenu 5-5 Status submenu 5-6 Inventory submenu 5-8 Test submenu 5-9 Parameters for the Far Radio menu 5-10 Control submenu 5-10 Parameters for the Link menu 5-10 Control submenu 5-10 Installation and commissioning procedures Chapter task list 6-1 List of procedures 6-1 Unpacking, identifying and matching the system 6-2 6-2 Installing the Internet BWA System 3200 on a pole 6-5 6-
v About this document 0 This section provides an overview of the Internet BWA System 3200 user guide. Audience This document is intended for: • installers • system line-up and test (SLAT) engineers/technicians • maintenance engineers User interface conventions The following conventions are used in procedures in this document. bold Bold entries identify a command or a userID entered by means of the craft interface terminal (CIT). ↵ This symbol means the return key must be pressed.
vi About this document Internet BWA System 3200 NTXXXXXX Rel 3.
1-1 System description 1- This document describes the Internet BWA System 3200. Overview The Internet BWA System 3200 establishes high-speed, reliable point-to-point wireless links. The Internet BWA System 3200 uses a 4-FSK modulation scheme and carries up to four E1 (2.048 Mbits/s) or up to four DS1 (1.544 Mbits/s) signals. Frequency band The Internet BWA System 3200 operates in the 15, 18, 23, 24/26, 28, 31 and 38 GHz frequency ranges.
1-2 System description For systems with a specific capacity (for example, a 4 x E1 capacity), the activation of a new tributary within that capacity is software programmable, either locally or remotely. The activation of a new tributary within an existing capacity does not cause any errors to the existing traffic. Inactive tributaries do not cause alarms.
System description 1-3 Equipment layout and main assemblies The Internet BWA System 3200 includes an outdoor unit (ODU), an antenna and a mounting assembly (see Figure 1-1). A terminal site requires one Internet BWA System 3200 to handle the radio signals for both the east and west directions. Figure 1-1 Internet BWA System 3200—physical layout MOP0082t.
1-4 System description Terminal signal flow This description covers the signal flow for a 38 Ghz frequency plan. Figure 1-2 shows a block diagram of the Internet BWA System 3200 components. Figure 1-2 Internet BWA System 3200 components—block diagram F6357p.
System description 1-5 Receive signal path An analog AGC voltage is applied in the IF circuitry under microprocessor control to reduce the dynamic range of the A/D input signal. Both broadband and narrow-band detection is employed. Broadband detection is analog detection at 1.26 GHz. Narrow-band detection is within the DSP. This design enables the receiver to cope with large adjacent channel signal levels and provides excellent A/D dynamic range to recover the desired signal.
1-6 System description Interface cable pins The interface cable pins connect: • Up to four E1 lines (120 Ohm, balanced) or up to four DS1 lines (100 Ohm, balanced) • DC power • alarm telemetry information • • two relays for summable and programmable alarms two dry-contact (Form-C) relay outputs that report on link performance and critical alarms Hand-held terminal interface The Internet BWA System 3200 includes an optional wireless hand-held terminal (HHT) that operates with batteries.
2-1 Ordering Information 2- This chapter describes the ordering information for the Internet BWA System 3200. Detailed equipment codes Table 2-1 to Table 2-4 provides information on the different types of equipment and kits. Table 2-5 provides information on rules. These rules correspond to the number in the “Eqpt rule” column in Table 2-1 to Table 2-4.
2-2 Ordering Information Table 2-3 Antennas Equipment description PEC CPC Eqpt rule 15GHz 60cm high performance antenna 15GHz 120cm high performance antenna NTHV30BC NTHV30BE A0832988 A0832975 1.
Ordering Information 2-3 User guide NTXXXXXX Rel 3.
2-4 Ordering Information Internet BWA System 3200 NTXXXXXX Rel 3.
3-1 Technical specifications 3- Tables 3-1 to 3-3 contain the technical specifications for the Internet BWA System 3200. Mechanical and environmental specifications Table 3-1 provides the mechanical specifications for the Internet BWA System 3200. Table 3-1 Physical, electrical and environmental specifications Dimensions 281 mm W x 281 mm H x 83 mm D 11 in. W x 11 in. H x 3.25 in.
3-2 Technical specifications Equipment interface specifications Table 3-2 contains the interface specifications for the Internet BWA System 3200. Table 3-2 Digital interface Tributary Rate 1.544 Mbps per ITU-T G.703 Line Code B8ZS or AMI I/O Impedance 100 ohms balanced and terminated by a connector Payload (programmable) 1 x DS-1, 2 x DS-1, 4 x DS-1 Channel Bandwidth 2.5 MHz, 2.
Technical specifications 3-3 System performance specifications Table 3-3 contains the system performance specifications for the Internet BWA System 3200. Table 3-3 Frequency plans and reliability Frequency Band 15GHz 18GHz 23 GHz 24/26 GHz 28/29 GHz 31 GHz 38 GHz Frequency Range (MHz) 14.4-15.35 17.7-19.7 21.2-23.6 24.25-26.5 27.5-29.5 31.0-31.3 37.0-40.
3-4 Technical specifications Internet BWA System 3200 NTXXXXXX Rel 3.
4-1 Trouble clearing procedures 4- This chapter contains information for fault locating, testing, and clearing alarms for the Internet BWA System 3200. Testing the Radio faults The Internet BWA System 3200 has three types of loopback tests for fault isolation. RF Loopback test This loopback retunes the receiver to the transmit frequency. RF leakage through the diplexer assembly prompts the local receiver to synchronize with the local transmitter.
4-2 Trouble clearing procedures Clearing the Radio alarms Table 4-1 lists the Internet BWA System 3200 alarms, an explanation of the alarm, the probable cause, and the action required to clear it. Table 4-1 iBAR-100 system alarms Alarm Explanation Probable cause Action required Tributary N Tx LOS The Internet BWA System 3200 cannot detect a signal at the tributary input. Defective customer equipment connected to Internet BWA System 3200. Verify customer equipment. Replace if defective.
Trouble clearing procedures 4-3 Table 4-1 (continued) iBAR-100 system alarms Alarm Explanation Probable cause Action required Equipment failure. If the RSSI is identical to the expected value, and the alarm remains active for a long period of time, then a component may be defective. If necessary, replace the ODU at the local site or the far-end site. Tributary N Rx AIS The Internet BWA System 3200 is receiving an AIS signal from the far-end radio.
4-4 Trouble clearing procedures Alarm interface pins The alarm interface pins refer to pins 12, 18 and 23 from the 31-pin interface on the ODU (see Table 4-2).
Trouble clearing procedures 4-5 The descriptions of the alarm pins in Table 4-2 on page 4-4 are: • summary alarm relay (pin 18): — activates when any of the alarms in Table 4-1 on page 4-2 are active — the relay contact is open in normal condition and closes in alarm condition • programmable alarm relay (pin 12): — activates when a programmed alarm is on.
4-6 Trouble clearing procedures For customers in the United States: Nortel Networks 917 Air Park Center Drive Nashville, TN 37217 Att: Repair and Return Tel.: 1-800-251-1758 For customers in the Caribbean and Latin America: Nortel Networks (CALA) 1500 Concord Terrace Sunrise, FL U.S.A. 33323-2815 Att: Repair Coordinator Tel.: (954) 851-8449 For customers in China: Nortel Networks China Limited 11/F, Nortel Tower, Sun Dong An Plaza No.
Trouble clearing procedures 4-7 For customers in the Philippines: Nortel Philippines Repair Center c/o Skyfreight Forwarders Inc.
4-8 Trouble clearing procedures Customers can direct requests for additional information to the nearest technical assistance service center (see Table 4-3).
5-1 User interface description 5- This chapter describes how to use wireless hand-held terminal (HHT). The HHT operates on batteries and allows quick and easy monitoring and changes to the system parameters of the Internet BWA System 3200. Hand-held terminal description The HHT can operate within 75 meters (225 feet) of the ODU. The LCD display provides visual access to a series of system software menus and parameters on two lines of 16 characters each.
5-2 User interface description • If you enter incorrect data, “Invalid Value” appears on the LCD. The circuit is usually in a muted state. The channel opens when the HHT issues a command. The HHT can communicate to the ODU of the Internet BWA System 3200 with the use of either: • a wireless channel (418 MHz or 433.
User interface description 5-3 Hierarchy of the HHT menus The HHT user interface is menu driven. The menus allow you to set and view the parameters for the local and the far-end radios. Figure 5-1 shows the hierarchy of the HHT menus. Figure 5-1 The HHT menus hierarchy R0015p.
5-4 User interface description Functions of the HHT keypad keys As Figure 5-1 shows, the menu items are: • Near Radio • Far Radio • Link The submenu items are: • Control • Inventory • Status • Test After you enter the radio terminal address, the “Near Radio” menu is the default menu item. Table 5-1lists the HHT keypad keys with the keypad key functions. Table 5-1 HHT keypad keys Key Press this key to...
User interface description 5-5 Parameters for the Near Radio menu This section describes the parameters within the submenus of the “Near Radio” menu item Control submenu This section lists the parameters within the “Control” submenu of the “Near Radio” menu. The “Control” submenu allows you to change to the parameters. Tx Freq To enter a value to set the transmit RF frequency (in MHz).
5-6 User interface description Line Coding To enter a value to select AMI or B8ZS coding for all tributaries. This parameter applies for DS1 systems only. For an E1 system, the line coding is always HDB3. Values: 0: AMI 1: B8ZS Tribut Enab To enter a value to enable or disable tributaries 1 ot 4. A disabled tributary has no alarms. This parameter has two or four screens (one for each tributary) that refer to the “capacity” setting for the radio. See also the “Capacity” parameter in this submenu.
User interface description 5-7 Cbl Lngth To view the length of the cable in meters. This parameter applies for DS1 systems only. Values: 0 to 40, 41 to 80, 81 to 121, 122 to 162, 163 to 200 Line Coding To view the DS1 line coding parameter (AMI or B8ZS) for all tributaries in the system. For an E1 system, the line coding is always HDB3. Values: 0: AMI 1: B8ZS Trib Stat To view the status of tributaries 1 to 4.
5-8 User interface description Blk Error Cnt To view the cumulative block error count from the FEC decoder. At this parameter, the system first reads the counter and then clears it. Values: Sum Alarms To view all active alarms. You can scroll through each active alarm. Refer to Chapter 4, “Trouble clearing procedures” for the alarm definitions.
User interface description 5-9 DSP SW Displays the serial number of the digital signal processing (DSP) software. This is the version number in the revision register of the field programmable gate array (FPGA) . Values: 0 to 255 Test submenu This section lists the parameters within the “Test” submenu of the “Near Radio” menu. The test menu allows you to disable the transmitter to perform loopback tests. Tx Mute To enable or disable the transmitter.
5-10 User interface description Parameters for the Far Radio menu This section describes the parameters within the control submenu of the “Far Radio” menu item. Control submenu This section lists the parameters within the “Control” submenu of the “Far Radio” menu. The “Control” submenu allows you to change to the parameters. Line Coding To enter the DS1 line coding method (AMI or B8ZS) for all tributaries in the far-end radio. For an E1 system, the line coding is always HDB3.
User interface description 5-11 Tx Power To set the transmit power level in dBm. The local radio communicates with the far-end radio to arrange the change in power level. If the radios lose communication for more than 10 seconds after a parameter change, the parameter reverts to its previous setting.
5-12 User interface description Internet BWA System 3200 NTXXXXXX Rel 3.
6-1 Installation and commissioning procedures 6- This chapter includes the procedures for the installation and commissioning of the Internet BWA System 3200. Chapter task list Table 6-1 lists the procedures in this chapter.
6-2 Installation and commissioning procedures Procedure 6-1 Unpacking, identifying and matching the system Use this procedure to unpack and handle the Internet BWA System 3200. Use this procedure to also identify and match the Internet BWA System 3200 system (radio-link). Requirements Before you start: • Select an appropriate area to unpack the shipping container. This area must be level, dry and dust-free. • Identify the frequencies that the radio is to operate in.
Installation and commissioning procedures 6-3 Procedure 6-1 (continued) Unpacking, identifying and matching the system Step Action 7 Verify that the equipment includes the components in Table 6-2.
6-4 Installation and commissioning procedures Procedure 6-1 (continued) Unpacking, identifying and matching the system Step Action Identify and match the Radio terminal 8 Match an “A” radio terminal with a “B” radio terminal as shown in Table 6-3. Table 6-3 Matching options “A” Terminal “B” Terminal System A-1 B-1 A-1 & B-1 A-2 B-2 A-2 & B-2 B-1 A-1 B-1 & A-1 B-2 A-2 B-2 & A-2 Each RF channel plan contains four sub-bands.
Installation and commissioning procedures 6-5 Procedure 6-2 Installing the Internet BWA System 3200 on a pole Use this procedure to install the Internet BWA System 3200 on a pole. The Internet BWA System 3200 assembly kit contains the outdoor unit (ODU), the main antenna, and the interface mounting bracket.
6-6 Installation and commissioning procedures Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Equipment Required equipment (refer to Figure 6-1 and Figure 6-2): • One azimuth adjustment plate (part 101488-1) that attaches with: — One U-bolt, 4.5 pipe, 3/8-16 — Two 3/8-16 hex nuts, bronze — Two 3/8 flat washers — Two 3/8 split lock washers • One azimuth adjustment rod with hardware • Two pole mount clamps that attach with: — Four 3/8-16 x 6.
Installation and commissioning procedures 6-7 Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Figure 6-2 Mounting equipment for the Internet BWA System 3200 (2 of 2) MOP0095p.eps Antenna mounting bolts Antenna mounting bolts Azimuth adjustment plate Part of U-bolt Action Step Action Determine what side of the pole to install the antenna on 1 2 The antenna mounts to receive the signals from the right side of the pole (see Figure 6-2).
6-8 Installation and commissioning procedures Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Step Action 3 Remove the four 1/4-20 screws that attach the antenna mounting flange to the antenna (see Figure 6-3) Figure 6-3 Antenna mounting flange MOP0098p.eps Antenna flange screws (4 places) 4 CAUTION When rotating the flange, make sure that you do not remove the feed from the reflector. Carefully rotate the flange 180° so that the drain hole remains on the bottom.
Installation and commissioning procedures 6-9 Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Step Action 7 Position the azimuth adjustment plate (P/N 101488-1) to the pole in the position that refers to the direction of the antenna as shown in Figure 6-4. Figure 6-4 Position of the mounting assembly MOP0093p.
6-10 Installation and commissioning procedures Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Step Action 12 Use the pole clamps and hardware to attach the antenna mounting plate to the pole as shown in Figure 6-4 on page 6-9 and Figure 6-2 on page 6-7. 13 Attach the galvanized flat washer, galvanized split lock washer and 3/8-16 galvanized hex nut to the end of the azimuth adjustment rod.
Installation and commissioning procedures 6-11 Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Step Action 15 Use the antenna mounting bolts in four places to hold the antenna to the mounting assembly (see Figure 6-6). Do not tighten the bolts completely to perfrom the alignment procedures Figure 6-6 Antenna installation (2 of 2) MOP0095p.
6-12 Installation and commissioning procedures Procedure 6-2 (continued) Installing the Internet BWA System 3200 on a pole Step Action 17 Make sure that you mount the ODU with the correct polarization at the top of the ODU (see Figure 6-7). Figure 6-7 shows a vertical polarization. Figure 6-7 ODU installation MOP0096p.eps Polarization indicators Azimuth adjustment screws —end— Internet BWA System 3200 NTXXXXXX Rel 3.
Installation and commissioning procedures 6-13 Procedure 6-3 Connecting the interface cables Use this procedure to connect all interface cables to the ODU of the Internet BWA System 3200 . DANGER Risk of personal injury Incorrect or unsafe installation can result in personal injury The interface between all user equipment and the Internet BWA System 3200 is a 100-Ohm (DS1) or 120-Ohm (E1) twisted-pair cable assembly.
6-14 Installation and commissioning procedures Procedure 6-3 (continued) Connecting the interface cables • Additional guidelines before the connection of the interface cable: — When cutting the cable length, be sure to add extra length for the service loop. — Ensure that a strain relief is added to each cable connection. — Ensure that the external connector is sealed and waterproof. — Follow standard installation practices. – Avoid sharp corners.
Installation and commissioning procedures 6-15 Procedure 6-3 (continued) Connecting the interface cables Action Step Action Connect to the customer equipment 1 Connect the twisted-pair wires of the interface cable to the customer equipment as shown in Table 6-5 (use a twisted-pair for each Tx and Rx connection.
6-16 Installation and commissioning procedures Procedure 6-3 (continued) Connecting the interface cables Step Action 3 If you connect less than 4 DS1 channels or less than 4 E1 channels, insulate the ends of the unused twisted pairs with electrical tape. Then label and fasten the ends for future identification. 4 CAUTION Reduced system performance Failure to use the correct cable types significantly reduces system performance.
Installation and commissioning procedures 6-17 Procedure 6-4 Setting up the Internet BWA System 3200 Use this procedure to set up and align the Internet BWA System 3200. On start-up, the Internet BWA System 3200 loads its operating software from its flash memory. During initialization, the radio remains mute until it completes its self-diagnostic tests. After start-up, you can monitor and control the Internet BWA System 3200 with the use of the hand-held terminal (HHT).
6-18 Installation and commissioning procedures Procedure 6-4 (continued) Setting up the Internet BWA System 3200 Step Action Trouble clearing the communication between the HHT and the ODU 7 If you cannot establish communication between the HHT and the ODU. a. Confirm the address and enter it again. b. Check the DC power to the outdoor unit (ODU). — Check the cable — Check the cable connector on the ODU — Check the power source. c. Disconnect and inspect both the ODU and the hand-held wireless antennas.
Installation and commissioning procedures 6-19 Procedure 6-4 (continued) Setting up the Internet BWA System 3200 Step Action 12 To change the Set Pwr setting, a. Use the keypad to enter the required transmit RF power output (Range +2 to +17 dBm). For example, to insert 2dBm, enter: Set Pwr: 2dBm b. press the ENTER key. 13 Press the MENU key to return to the Control menu. 14 Press the MENU key again to return to the Far End menu.
6-20 Installation and commissioning procedures Procedure 6-5 Aligning the antenna of the Internet BWA System 3200 Use this procedure to align the antenna of the Internet BWA System 3200 with the next far-end antenna. Perform this alignment procedure for one terminal at a time.
Installation and commissioning procedures 6-21 Procedure 6-5 (continued) Aligning the antenna of the Internet BWA System 3200 Action Step Action Perform the horizontal antenna alignment 1 Establish communication with personnel on the far-end of the link. 2 From the HHT, go to the Near End | Status menu. 3 Press the ENTER key to access the parameters in the Status submenu. The following message appears on the display: Get TX 4 Press the ARROW key until the RSSI command appears on the display.
6-22 Installation and commissioning procedures Procedure 6-5 (continued) Aligning the antenna of the Internet BWA System 3200 Step Action 9 Identify the main and side lobes (the antenna side lobes are normally 12 to 20 dB below the main lobes). If the antenna peaks at 20 dB below the expected level, you can be on a side lobe or you have cross polarized the antennas. 10 Place marks on the threads of the azimuth adjustment rod to identify the main and side lobes.
Installation and commissioning procedures 6-23 Procedure 6-5 (continued) Aligning the antenna of the Internet BWA System 3200 Step Action 15 Place marks on the threads of the antenna mounting plate to identify the main and side lobes. 16 After identifying both the main and side lobes, position the antenna assembly to the main lobe mark. 17 Tighten the elevation adjustment screws by hand.
6-24 Installation and commissioning procedures Procedure 6-6 Commissioning the Internet BWA System 3200 Use this procedure to commission the local and the far-end Internet BWA System 3200. Requirements Before you start this procedure: • Perform all of the procedures in this chapter. • Have personnel at both the near end and far end terminals.
Installation and commissioning procedures 6-25 Table 6-6 Internet BWA System 3200 configuration form Customer Equipment Station Hop Length Date Miles/km Prepared by Equipment Parameters Equipment Type Station ID Terminal address Equipment Rack Number System Capacity Mbit/s Transmitter Frequency MHz Receiver Frequency MHz Transmitter RF Output Level dBm Threshold Level of the Receiver dBm Calculated Fade Margin dB AGC Voltage V BER Performance Antenna Polarization Vertical (V) Horizontal (H
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Internet Broadband Wireless Access Internet BWA System 3200 Copyright 2000 Nortel Networks, All Rights Reserved The information contained herein is the property of Nortel Networks and is strictly confidential.
