Page 1 605-0000-593 AS4000 / AS4020 Base Station Installation and Commissioning Release 7.30 © 2004 Airspan Networks Inc...
Page 3: Table Of Contents
Central Terminal Card Installation................. 72 AS4020 CT Shelf Installation and Cabling................ 80 Shelf Connections ......................80 AS4020 Shelf Installation upgrade into AS4000 Rack ........... 82 Adding one AS4020 shelf to existing rack ..............85 Adding two AS4020 shelves to existing rack ..............86 Adding three AS4020 shelves to existing rack...............
Page 4 Printed Documentation Setting the System into Service .................. 127 AS4020 CT Setup and Test ................... 128 AS4020 Menu Map..................... 128 AS4020 error messages ..................... 130 Set Traffic/Management Ports ..................131 Set NMS Menu......................132 Set TX Power ......................133 Set RX sensitivity using a DACU without Calibrated Coupler ........137 Connecting the DACU ....................
Page 5: Installation
Installation Overview AS4000 AS4000 System The system uses Point-to-Multipoint digital radio links between the individual customer's premises and the carriers local "point of presence" typically the Local Exchange premises. If greater flexibility or range is required, the network radio equipment can be located in another...
Page 6 Printed Documentation...
Page 7: Overview As4020
Installation Overview AS4020 AS4020 System The system uses Point-to-Multipoint digital radio links between the individual customer's premises and the carriers local "point of presence" typically the Local Exchange premises. If greater flexibility or range is required, the network radio equipment can be located in another suitable building or wayside cabinet.
Page 8: Preparation
Verify that the site is ready for the installation of the CT Racks. This preparation will have been covered by a site survey conducted by Airspan Networks or by a survey form completed by the customer. The survey will include a site plan of the facility identifying the floor layout, power outlets, distribution boxes, and cabling runways.
Page 9 Email: support@airspan.com Dispose of all unnecessary packaging in a safe manner according to the customer’s requirements. During UK working hours, the Airspan Shipping Department can be contacted at: Tel:+44 1895 467 444 or +44 1895 467 444 Fax:+44 1895 467 438...
Page 10 Printed Documentation Note: It is recommended that one package carton of each type is retained should it be required to return any faulty or damaged items for repair.
Page 11: Rack Installation
Installation Rack Installation Rack Layouts AS4000 Racks AS4000 Central Terminal and Access Concentrator Racks are produced with the following layouts: Access Concentrator  One DA Access Concentrator Shelf and a Fuse and Alarm Panel  Two Access Concentrator Shelves and a Fuse and Alarm Panel...
Page 12 Printed Documentation Central Terminal Demand Assignment System  One DA Modem Shelf with RF Combiner Shelf  Two DA Modem Shelves with RF Combiner Shelf  Expansion Rack with one DA Modem Shelf and a Fuse and Alarm Panel. (Connects to an existing Central Terminal Rack) ...
Page 13 Installation No of Modem Central Expansion Rack Shelves Terminal Rack 1 Modem Shelf Not required 2 Modem Not required Shelves 2 Modem 1 Modem Shelf Shelves 2 Modem 2 Modem Shelves Shelves Integrated Basestation The Integrated Basestation incorporates a Combiner Shelf , Modem Shelf and Access Concentrator in a full height equipment rack.
Page 14 Printed Documentation...
Page 15: Rack Layouts
Full height rack with RF Combiner Shelf. two AS4000 Modem Shelves and one AS4020 Modem Shelf  Full height rack with RF Combiner Shelf, one AS4000 Modem Shelves and up to three AS4020 Modem Shelves  Compact rack with RF Combiner Shelf. One AS4000 Modem Shelf and one AS4020 Modem Shelf ...
Page 16 Printed Documentation...
Page 17: Rack Installation
Installation Rack Installation Positioning and Securing Racks Installing Rack in a Suite From the site survey, confirm the position of the CT Rack(s). If the racks are to be positioned in a suite, metalwork will be required to secure it to the overhead structure. Either a proprietary system or fabricated steelwork will be required - see site survey.
Page 18 Printed Documentation Typical Overhead Ironwork Support Note: In installations where threaded droprods in excess of 500mm are employed it may be necessary to provide additional support bars to ensure rigidity of the support structure. Securing a Rack to a Wall If the rack is to be positioned against a wall, attach two right-angled wall brackets to the top of the rack and finger tighten with the provided M12 screws.
Page 19: Dc Power And Alarm Cabling
Installation DC Power and Alarm Cabling Rack Earthing Using the site survey, locate the building central [safety] grounding point. Run an earth cable rated at 30A to each rack and connect it to the centre earth stud located at the top or at the side of the rack.
Page 20 Printed Documentation Terminate the battery feed and return cables at the isolator/fuse positions, and ensure that the AC rack is isolated until the commencement of commissioning tests. DC Power The cables for the negative DC battery feeds, the 0V returns and the Rack Ground are detailed in.
Page 21 Installation Power Supply Configurations Three alternative methods are possible to connect the DC supply to the rack.  Secure Supply: This is the preferred method as it provides DC from different sources giving greater resilience of supply than the other methods. (see diagram above and note 2 below) From each Distribution Boards (DB) run and tie in a negative battery feed and a zero volt return to a Dual Pole Isolating switch and then from the isolating switch to the AC/CT rack installed.
Page 22 Block 2 & 4. The positive battery returns go to 1 & 3. DC Termination on The Combiner Shelf. DC Termination on Fuse and Alarm Panel (AS4000 Access Concentrator and AS4000 Expansion Rack) Run the DC cables through the top left hand side of the rack, into the fuse and alarm panel.
Page 23 Installation Remove clear plastic cover protecting the DC input terminals. Trim cables and strip 7mm. Crimp a spade terminal or terminal ring onto the wire and attach to terminals inside the Fuse and Alarm panel at the appropriate connection points. The negative supplies go to Termination Block 1 &...
Page 24: As4000 Ac Rack Cabling And Wiring
Printed Documentation AS4000 AC Rack Cabling and Wiring AC Rack E1 Cabling 75 ohm Access Concentrator Interface Panel All cabling to the access concentrator connects to the interface panel. Slots 4,5 and 6 can be used for 75ohm and 120ohm connections. Slots 7-14 is used for 120ohm connections each slot will support up to 8 E1 connections.
Page 25 Installation b) E1 Cabling (Switch Link) From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Switch if the E1 feeds are fed directs to the equipment. The length of E1 feeds should not exceed 250 metres.
Page 26 Printed Documentation Type 43 Backplane Adapter b. Siemens 1.5/6.5 Connector. Fit Siemens 1.5/6.5 Connector to 25way D-type adapters 303-1139-900 to the backplane sockets and terminate all cables with Siemens 1.5/6.5 connectors (75ohm ) and fit according to the figure below.
Page 27 Installation Typical 75ohm DDF Layout...
Page 28 Printed Documentation...
Page 29: Ac Rack E1 Cabling 120 Ohm
Installation AC Rack E1 Cabling 120 ohm Access Concentrator Interface Panel All cabling to the access concentrator connects to the interface panel. Slots 4,5 and 6 can be used for 75ohm and 120ohm connections. Slots 7-14 is used for 120ohm connections each slot will support up to 8 E1 connections.
Page 30 Printed Documentation Note: This must be a SELV port of an EN 60950 approved product. Run the E1 cables from the AC shelf to the allocated positions on the DDF. In partial equipped installations it may be appropriate to run enough cables to cater for a complete rack of equipment.
Page 31 Installation Pair Designation Pair Designation Screen Screen Screen Screen Screen Screen...
Page 32 Printed Documentation Screen Screen Overall Screen 120 ohm connections slots 4-6 Pair Designation Pair Designation Screen Screen Screen Screen Screen Screen Screen Screen Overall Screen 120 ohm connections slots 7-14 (In) Pair Designation Pair Designation...
Page 33 Installation Screen Screen Screen Screen Screen Screen Screen Screen Overall Screen 120 ohm connections slots 7-14 (Out) Pair Designation Pair Designation Screen Screen Screen Screen...
Page 34 Printed Documentation Screen Screen Screen Screen Overall Screen...
Page 35: Ac Rack T1 Cabling
Installation AC Rack T1 Cabling All cabling to the Access Concentrator connects to the interface panel. Slots 7, 8, and 9 can be used for T1 CTU connections. Slots 10-14 are used for T1 XTU connections each slot will support up to 8 T1 connections. (Exceptionally slots 4, 5, and 6 can be used for XTU connections using an adapter 303-1113-900 connected to the D- type below the BNCs for the relevant slot.
Page 36 Printed Documentation Fit the RJ45 adapter 303-1112-900 and secure to the Backplane using screws in the top and bottom holes of the adapter. RJ45 adapter 303-1112-900 b) T1 Cabling (Switch Link) From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Switch if the T1 feeds are fed directs to the equipment.
Page 37: Ptu To Host Cabling
Installation PTU to Host Cabling RJ45 to DB25 Adaptor To connect the 100baseT cable to the AC Shelf interface panel a RJ45 to DB25 adaptor must be fitted. Fit the RJ45 to DB25 adaptor and screw to the backplane. The RJ45 to DB25 adaptor currently must be connected onto the lower of the two 25-way AC connectors allocated to each slot (even though the activity lights work if connected to the top).
Page 38: Ac Rack Labeling
Printed Documentation AC Rack Labeling The racks should be labelled as shown below. Access Concentrator Rack...
Page 39: Interface Connections
Installation Interface Connections This page contains miscellaneous interface and connector details.
Page 40 Printed Documentation 120 Ohm Interface Connections on DA Access Concentrator Backplane Interface Adaptor EIA 530 to V35 Interface Adapter EIA 530 to X21 EIA 530 loopback Connector...
Page 41 Installation...
Page 42: Bnc Terminations To Coax
Printed Documentation BNC Terminations to Coax...
Page 43: Type 43 Terminations To Coax
Installation Type 43 Terminations to Coax...
Page 44 Printed Documentation...
Page 45: Access Concentrator Card Installation
Installation Access Concentrator Card Installation The AC rack is shipped with shelves fitted to customer requirements and internal cabling complete. Warning: Before handling any cards or modules, observe full anti-static precautions. See Operations an Maintenance Guide Preliminary In a new installation ensure that the AC Circuit on the Fuse and Alarm panel are set to the OFF position (down).
Page 46 Printed Documentation The maximum 64k build configuration (V5.1/CAS/ISDN) is shown above. The XTU functions are configured using Sitespan. V5.1 does not support Data XTUs. The maximum 32k build configuration for V5.2 is shown above. The XTU functions are configured using Sitespan. a.
Page 47 Installation d. 3 CTUs are supported. Each CTU supports four CT modem shelves. Each CTU may be cabled for four 120 E1s or four 75 E1s. and are placed in slots 4, 5, and 6 e. XTUs (CAS, Data, ISDN, V5.1, V5.2 and PTU) are supported. Each XTU may be cabled for eight 120...
Page 48 Printed Documentation c) All other slot positions are configurable via Sitespan. d) 3 CTUs are supported. Each CTU supports four CT modem shelves. Each CTU may be cabled for eight 120 T1s. and are placed in slots 7, 8, and 9 e) XTUs (GR303, CAS, Data, ISDN, V5.1, V5.2 and PTU) are supported.
Page 49: As4000 Ct Shelf Cabling And Wiring
Installation AS4000 CT Shelf Cabling and Wiring Central Terminal Rack E1 Cabling 75 ohm From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Backhaul/Access Concentrator if the E1 feeds are fed directs to the equipment.
Page 50 Printed Documentation 75 Ohm Shelf Interface Connections Run the E1 co-axial cables from the modem shelf to the allocated positions on the DDF/Backhaul. (Two cables per shelf in normal working, four cables per shelf in protected mode). In partial equipped installations it may be appropriate to run enough cables to cater for a complete rack of equipment.
Page 51 Installation Shelf Interface Panel 303-1111-900 75 Ohm Shelf Interface Connections Run the E1 co-axial cables from the modem shelf to the allocated positions on the DDF/Backhaul. (Two cables per shelf in normal working, four cables per shelf in protected mode). In partial equipped installations it may be appropriate to run enough cables to cater for a complete rack of equipment.
Page 52 Printed Documentation...
Page 53: Ct Rack E1 Cabling 120 Ohm
Installation CT Rack E1 Cabling 120 ohm From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Backhaul/Access Concentrator if the E1 feeds are fed directs to the equipment.
Page 54 Printed Documentation 120 Ohm Shelf Interface Connections Run the E1 120 ohm cables from the modem shelf to the allocated positions on the DDF/Backhaul. In partial equipped installations it may be appropriate to run sufficient cables to cater for a complete rack of equipment. This reduces the need to disturb original installation when adding additional equipment.
Page 55 Installation Run the E1 cables from the modem shelf to the allocated positions on the DDF/Backhaul. In partial equipped installations it may be appropriate to run sufficient cables to cater for a complete rack of equipment. This reduces the need to disturb original installation when adding additional equipment.
Page 56 Printed Documentation Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges. E1 Shelf Interface Connections To D-Type Plug Terminate all cables at the modem shelf end with 25 pin D-Type connectors. Terminate as detailed below.
Page 57: Ct Rack T1 Cabling
Installation CT Rack T1 Cabling From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Backhaul/Access Concentrator if the T1 feeds are fed directs to the equipment. The length of T1 feeds should not exceed 100 metres. Cat 5 FTP screened (foil & braid) twisted pair cable should be used.
Page 58 Printed Documentation T1 (RJ45) interface connections to 303-1111-900 shelf interface panel Run the T1 cables from the modem shelf to the allocated positions on the DDF/Backhaul. In partial equipped installations it may be appropriate to run enough cables to cater for a complete rack of equipment.
Page 59 Installation The illustration below shows connections to Modem Shelves 2,3 and 4 using adapter 303- 1113-900 Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges. Ensure that the switches below the BNC on the Shelf Interface Panel are set for 100ohm working...
Page 60: Baseband Connections Between Ct And Expansion Racks
Printed Documentation Baseband connections between CT and Expansion Racks Inter-rack Baseband connections to Expansion Rack Remove the blank panel located immediately below the combiner shelf on the CT Rack Run a Baseband ribbon cable from each modem shelf in the Expansion Rack to the combiner shelf via the hole created by the removal of the breakout sections during the rack installation.
Page 61: Expansion Rack Cabling
Installation Expansion Rack Cabling Central Terminal Expansion Rack Cabling 2Mbit/s Cabling From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a DDF is to be used or the Backhaul/Access Concentrator if the 2Mbit/s feeds are fed direct to the equipment.
Page 62: 75 Ohm Connections
Printed Documentation Shelf Interface Connections. 75 Ohm Connections Run the 2Mbit/s co-axial cables from the modem shelf to the allocated positions on the DDF/Backhaul. (Two cables per shelf in normal working, four cables per shelf in protected mode). In partial equipped installations it may be appropriate to run enough cables to cater for a complete rack of equipment.
Page 63 Installation 120 ohm connection to CT modem shelf. Connect the 2Mbit/s ports on the DDF to E5 slot 5 connectors on shelf interface connections located on the modem shelf interface panel. If using protected mode connect the other 2Mbit/s cables to E5 slot 9 connectors on the same panel. Ensure that the respective 2Mbit/s ports have been configured on the DDF/Backhaul Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges.
Page 64: Antenna Configurations
AS4000 This section describes the various antenna configurations and modifications needed to the baseband wiring if the AS4000 CT rack is configured so that the two modem shelves serve separate directional antenna. and the subsequent connection arrangements when an expansion rack is fitted.
Page 65 Installation 1. Remove the blank panel located immediately below the Combiner Shelf on the DA Rack. 1. Swap the baseband connectors from Modem Shelves 2 and 3 on the Combiner Shelf backplane (the sockets are located behind the switches on the Combiner Shelf).
Page 66 Printed Documentation Combiner Shelf Ribbon Connections Standard Config Mixed AS4000 / AS4020 Configuration for AS4020 where AS4000 exists on sectored /dual omni antenna...
Page 67 Installation Configuration for AS4020 where AS4000 exists on single omni and additional antenna added Integrated Base Station Rack The antenna is configured as shown in the diagrams below.
Page 68 Printed Documentation...
Page 69: Interface Connections
Installation Interface Connections This page contains miscellaneous interface and connector details.
Page 70 Printed Documentation 120 Ohm Interface Connections on DA Access Concentrator Backplane Interface Adaptor EIA 530 to V35 Interface Adapter EIA 530 to X21 EIA 530 loopback Connector...
Page 71 Installation...
Page 72: Ct Rack Labelling
Printed Documentation CT Rack Labelling Central Terminal Rack...
Page 73: Bnc Terminations To Coax
Installation BNC Terminations to Coax...
Page 74: Type 43 Terminations To Coax
Printed Documentation Type 43 Terminations to Coax...
Page 75 Installation...
Page 76: Central Terminal Card Installation
Insert the card until the connectors engage, ease the card into the backplane until fully engaged. Lock top and bottom with a screwdriver. If resistance is met, remove the card and reinsert. If difficulty persists contact the Airspan service centre.
Page 77 Installation Expansion Rack Fuse and Alarm Panel Ensure that the end of suite fuses are adequately rated and insert these into the respective fuse holder positions. Card Insertion Insert the cards into the shelves, recording the serial numbers and revision status in the test form.
Page 78 Printed Documentation Card Insertion DA Rack Card Insertion Expansion Rack...
Page 79 Installation Card Provision for New Installation With the initial installation it is advisable to install the cards in both the combiner shelf and the modem shelves with the power switched off. Fit Cards in RF Combiner Shelf...
Page 80 Printed Documentation Insert the following modules and secure:-  1 RF Power Amplifier Module (2 PA’s) in the left hand position in the combiner shelf  1 x Low Noise Amplifier + Diplexer (DIP/LNA 1) (Terminate output with 50ohm termination.) ...
Page 81 Installation Insert the following cards into each Modem Shelf: -  2 x PSUs Slots 1 and 2.  1 x Analogue Card (AU) Slot 16.  1 x Demand Assignment Tributary Card (DTU). Slot 5.  1 x Shelf Controller (SC) Slot 3. ...
Page 82 Printed Documentation Some Installations may use directional antennas and use two DIP/LNAs for a two shelf system. in this situation Shelf 1 connects to DIP/LNA 1 and Shelf 2 to DIP/LNA 2. See Hybrid Rack Modification for Directional Antenna Two Antenna Installations In new installations the protective boots of the antenna feeder tails free ends should be kept in position until the tail is actually connected.
Page 83 Installation  2 x PSUs. Slots 1 and 2.  1 x Shelf Controller Card  1 x Analogue Card (AU). Slot 16.  1 x Demand Assignment Tributary Card (DTU). Slot 5.  Modem Cards Slots 10 to15. b) Shelf 2 (CT Rack) or Shelf 4 (Expansion Rack) When installing cards into an existing installation the power is already connected and the cards should be inserted in the order listed below.
Page 84: As4020 Ct Shelf Installation And Cabling
Initially the AS4020 CT shelf is fitted within the AS4000 CT rack with the Radio sub-system, and optionally alongside up to two AS4000 CT shelves. Alternatively a half-height AS4000 CT rack can fit four AS4020 shelves and a radio sub-system.
Page 85 Installation 1. Remove the blanking plate by removing the two screws that secure it to the chassis 2. Carefully slide the option board into the shelf ensuring that the connector mates with the backplane. 3. Secure with screws to the chassis.
Page 86: As4020 Shelf Installation Upgrade Into As4000 Rack
Printed Documentation AS4020 Shelf Installation upgrade into AS4000 Rack This topic covers the installation of AS4020 shelves as an upgrade into an existing AS4000 rack. The AS4020 fits immediately below the combiner shelf in the central terminal rack. If more than one AS4020 is to be installed existing modem shelves will need to be removed.
Page 87 . Connect to the IDC connector corresponding to the RF card to be used. 8. Remove the Alarm Connector from JP4(Alarm) on the AS4000 shelf 1 backplane and insert the connector 454-0010-137 between JP4 and the connector 9.
Page 88 Printed Documentation 12. Fit the cable tray immediately above the AS4020 shelf. Fix the shelf with two cross head screws and locking washers. 13. Connect the IDC end of the combiner monitor connecting lead (454-0010-134) to the IDC connector in the cable assembly 454-0010-137 added in step 8. 14.
Page 89: Adding One As4020 Shelf To Existing Rack
Installation Adding one AS4020 shelf to existing rack The following installation diagrams show the additions to wiring that need to be made when adding 1 AS4020 shelf into existing rack.
Page 90: Adding Two As4020 Shelves To Existing Rack
Printed Documentation Adding two AS4020 shelves to existing rack The following installation diagrams show the additions to wiring that need to be made when adding 2 AS4020 shelves into existing rack.
Page 91: Adding Three As4020 Shelves To Existing Rack
Installation Adding three AS4020 shelves to existing rack The following installation diagrams show the additions to wiring that need to be made when adding 3 AS4020 shelves into existing rack.
Page 92: Adding Four As4020 Shelves To Existing Rack
Printed Documentation Adding four AS4020 shelves to existing rack The following installation diagrams show the additions to wiring that need to be made when adding 4 AS4020 shelves into existing rack.
Page 93: Adding Two As4020 With Two As4000
Installation Adding two AS4020 with two AS4000 If it is required to put two AS4020 shelves into an existing two shelf AS4000 installation the first AS4020 shelf should be placed between the combiner shelf and the top AS4000 shelf. To...
Page 94: As4020 Interface Connections
Printed Documentation AS4020 Interface Connections Alarm Wiring 26way High Density Male D-type. Description DC 3.3V Reset Reset 5 & Service 7 & Attention 9 & Fail Reset Earth Reset LAT Socket Description Earth Tx Out Rx In RS442 Description RX + RX - TX + TX -...
Page 95: Setup And Test
General The following procedures need to be carried out in order to verify the functionality and operation of all cards fitted into the Central Terminal prior to placing the AS4000/4020 system into service. It is preferable to connect the As4000/AS4020 to a ISP when commissioning. This allows the CT to be connected and test calls made over the system during the commissioning process.
Page 96: As4000 Ac Setup And Test
Printed Documentation AS4000 AC Setup and Test Access Concentrator: Turn-Up and DC measurements Pre-Checks Before commencing the turn-up of the rack check that the serial number and Rev levels of all card have been entered into the test form and that the SC boot chip version is recorded.
Page 97 Setup and Test Place one PSU in the shelf . Switch the Rack ON by placing one breaker on. The two breakers duplicate power to each shelf and the shelves will still function if one power supply fails though the LED indicators on the power supplies will not be on. The PSU should show a green LED and one supply fail LED.
Page 98 Printed Documentation 2.1V 2.1V Access Concentrator Shelf PSU Voltages. Switch Rack off and plug in all the remaining cards in their respective positions on the shelf Repeat Test 1b for the other AC shelves if fitted.
Page 99: Setting Up The Access Concentrator
7. Highlight the site, click right mouse button and select Create Child Element Select Airspan AC Rack Highlight the rack in Object List, click right mouse button and select create Airspan DA AC shelf Select the position for the AC shelf.
Page 100 1. Click right mouse button over AUX card position 4 select and create a CTU card. 2. Create additional CTU cards in slots 5 and 6 if required. 3. Position mouse over CTU card position, click right mouse button and select Airspan CTU Properties 4.
Page 101 Setup and Test Check Boot Sequence 1. SC card boots-up and displays the following LED sequence: a. Red & green LEDs both ON b. All LEDs OFF c. Green LED FLASHING d. Green LED ON e. The red LED temporarily comes ON All the cards on the shelf now boot-up.
Page 102 Printed Documentation Card failure LED, which shall be alight if the card self test fails, or if commanded by the Green Card busy LED, to indicate live traffic is present and should not be removed. Red/yellow E1/T1 port 1 Alarm Red/yellow E1/T1 port 2 Alarm Red/yellow...
Page 103 Self Test (Test 4) 1. Select CTU card on shelf view double click the card, or click right mouse button and select Airspan (card type) View 2. Execute the self test function (using Netspan) on each CTU card and ensure that it passes.
Page 104 1. If V5.1 interface is being used then the NMC administrator should enable the V5.1 interface. From the AC shelf equipment view, select the XTU card and use Edit- >AS4000 DA V5.1 XTU 2. Connect the required E1s/T1s to the Switch or Cross-Connect using jumper cables at the DDF.
Page 105 Setup and Test 5. On V5.1 cards, from the corresponding E1/T1, select Switch to New and then Re- establish to activate the V5.1 interface with the switch. If the V5.1 interface is not indicated as active in the XTU Card View the switch authority must be contacted . 6.
Page 106: Access Concentrator Rack Commissioning Test Results
Printed Documentation Access Concentrator Rack Commissioning Test Results Please photocopy test results sheet for use with each system CUSTOMER: SITE LOCATION: RACK ID: ENGINEER: DATE: 1. Commissioning Test Results Test Equipment Calibration Item Description Model Serial Calibration Date Digital Multimeter Serial Number and Rev Level Record Rack ID AC Shelf 1...
Page 107 Setup and Test AUX 13 AUX 14 Rack ID AC Shelf 2 Card Type Serial Number Rev Level PSU 1 PSU 2 AUX 1 AUX 2 AUX 3 AUX 4 AUX 5 AUX 6 AUX 7 AUX 8 AUX 9 AUX 10 AUX 11 AUX 12...
Page 108 Printed Documentation Cabling Shelf 2 System Commissioning Tests Test Exchange DC Voltage Supply -21.8 to -60.0V DC Exchange DC Voltage Supply Test Exchange DC Voltage Supply -21.8 to -60.0V DC Exchange DC Voltage Supply 5V DC  250mV Test AC Shelf 1 PSU1 3.3V DC +0mV-300mV 2.1V DC+0mV-100mV 5V DC ...
Page 109 Setup and Test TEST TEST RESULT Test 4 AC Shelf 1 SC Card System Configuration AUX 1 Self test from Netspan AUX 2 AUX 3 AUX 4 AUX 5 AUX 6 AUX 7 AUX 8 AUX 9 AUX 10 AUX 11 AUX 12 AUX 13 AUX 14...
Page 110 Printed Documentation...
Page 111: As4000 Ct Setup And Test
Setup and Test AS4000 CT Setup and Test Turn-Up and DC measurements Before commencing the turn-up of the rack, check that the serial number and Rev levels of all cards have been entered into the test form. Disconnect the Antenna.
Page 112 Printed Documentation Combiner Shelf PSU.
Page 113: Commissioning The Central Terminal
Setup and Test Commissioning the Central Terminal Setting up Site Configuration on Netspan This procedure is used to set-up the Central Terminal for commissioning and does not require the back-haul to the Access Concentrator Site to be installed. To commission the AC Shelf the Shelf must be either ...
Page 114 Printed Documentation 2. If required download the appropriate software by following the software download procedure (see Software Download) 3. Re-boot the Shelf by clicking the Reset Shelf button on the shelf controller view. Check Boot Sequence 1. SC card boots-up and displays the following LED sequence: a.
Page 115 Setup and Test RF Combiner Shelf Low Noise Amplifier Position Colour Description Status Top 1 Amber Power/Module Status OK Power Fault RF Card [RF] Position Colour Description Status Top 1 Amber Power/Module Status OK Power Fault Shelf Monitor Position Colour Description Status Top 1...
Page 116 Printed Documentation Top 1 Amber Power/Module Status OK Power Fault/PA Module 1 Fault Power Fault/PA Module 2 Fault * PA 2 is inserted inverted and the alarm indicators are also inverted Power Supply Unit [PSU] Position Colour Description Status Top 1 Amber Power OK Power Fail...
Page 117 Setup and Test Green Link failure Trinity 1 Green Link failure Trinity 2 Green Link failure Trinity 3 Green Link failure Trinity 4 Green Link failure Trinity 5 Green Link failure Trinity 6 Green Link failure Trinity 7 Green Link failure Trinity 8 Green Link failure Trinity 9 Green...
Page 118 Printed Documentation Card failure LED, which shall be alight if the card self test fails, or if commanded by the SC. Green OK Card is Active.. Position Colour Description Status Card failure LED, which shall be alight if the card self test fails OK Card is Active.
Page 119: Measuring Central Terminal Tx Power
Note: If proceeding to commissioning the DACU should be powered up and allowed to warm up for 30 mins prior to setting the RX sensitivity.. This procedure is for setting up AS4000 shelves only. Tools and equipment needed. Item Description...
Page 120 Printed Documentation Figure Power Level measurement Test Set-Up Measure the output of shelf 1. (This test is repeated for other installed shelves) 1. Remove the RF cards for all but the shelf being commissioned 2. Connect Sitespan to the shelf under test. See Connection to Sitespan 3.
Page 121 Setup and Test 4. Open the DTU card properties. Set any 4RWs to OOS160k and the remainder to OOS (These can be selected from the by clicking the mouse on the state to cycle through the options).
Page 122 Printed Documentation View the Modem Shelf Properties using Sitespan. Set the TX and RX gain to 0(zero) Ensure that a 30dB attenuator is connected to the power sensor if required to protect the sensor. Calibrate/set-up power meter according to manufacturers instructions. Connect the power sensor at the top of the rack as per diagram Measure O/P power and ensure the level is less than -20dBm Adjust TX Gain for the band of the system under test.
Page 123 Setup and Test 2.0-2.3GHz +27dBm 2.3-2.5GHz +27dBm 3.4-3.6GHz +24dBm Set RW1 to OOS(160K) and all other RWs OOS Measure the output power: ensure the level is as in the table below Band Reading ±1dB 1.8-1.9GHz +20dBm 2.0-2.3GHz +21dBm 2.3-2.5GHz +21dBm 3.4-3.6GHz +18dBm Repeat power reading for single RW OOS(160k), for all other individual RWs...
Page 124: Procedure In Case Of Card Boot-Up Failure
Printed Documentation Procedure in case of card boot-up failure Procedure in case of card boot-up failure If the cards inserted into the shelf do not boot-up, the top red LED on the card will be either continuously ON or FLASHING. The following steps should be followed: Check cards are properly inserted into the shelf, in the correct positions 2.
Page 125: Setting Rx Sensitivity Using Dacu 2.0-2.3Ghz & 3.4-3.6Ghz Band
Setup and Test Setting RX sensitivity using DACU 2.0-2.3GHz & 3.4-3.6GHz Band (Test 6) If a DACU is not available use Setting RX Sensitivity without DACU Preparation for commissioning at the Central Terminal 1. The DACU should be powered up and allowed to warm up for 30 mins to achieve stability prior to setting the RX sensitivity.
Page 126 Printed Documentation Record results in test results sheet Power off the DACU. Put all RWs back in service. Restoring shelf connections 1. Remove the test equipment and connecting cables. 2. Replace the Shelf covers and the protective cap on the coupler. 3.
Page 127: Setting Rx Sensitivity Without Dacu
Setup and Test Setting RX Sensitivity without DACU Tools and equipment needed. Item Description Recommended Model Quantity Digital Multimeter Fluke 77 ST Test Unit, SIU with Modified Antenna at appropriate band 30dB Attenuators; 5W Mini Circuits: BN-N30W5 30dB Attenuators; 2W M/A-COM:2082 6044 30:2W Two Way Power Mini Circuits: ZAPD-4-S...
Page 128 Printed Documentation Test Set-up 2. Measure and calibrate the loss of all components as per diagram above: 3. Measure (1)A-B, (2)B-C, (3)C-D and (7)D-E. 4. Enter values in calibration chart for the relevant frequency. 5. Calculate/determine overall path loss and required ST output power and hence required power meter reading.
Page 129: Ber Test
Setup and Test BER Test The BER test is best done from the network management centre but if a management centre backhaul has not yet been established the test may be performed at the AC site and should be set up by connecting Local Netspan/Sitespan to AC Rack, building site locally and create subscriber.
Page 130 Printed Documentation The presence of the loopback should be seen at the BER test set. Inject 1 error into the test signal and observe it on the incoming signal to check that errors are detected. Start and stop the test to clear the injected error. Observe the return signal on the T1/E1 out to establish that the link is error free.
Page 131: Setting The System Into Service
Setup and Test Setting the System into Service Checking alarms and connections to Netspan At the AC Test the RS232 disconnect alarm by disconnecting the adapter on Sitespan port I. Pull card and check alarm is visible at NMC. At the NMC set the free list entries. For details on setting free list entries see the Netspan Help File Note System Optimisations to the configuration that improve Net entry time ...
Page 132: As4020 Ct Setup And Test
Printed Documentation AS4020 CT Setup and Test AS4020 Menu Map The system parameters are set from the front panel of the AS4020 The chart below shows the menu layout...
Page 133 Setup and Test...
Page 134: As4020 Error Messages
(not the Airspan file header), attached containing which has an associated checksum, this is corrupted. the image being loaded has a checksum calculated that is different to the one stored in the header.
Page 135: Set Traffic/Management Ports
Setup and Test Set Traffic/Management Ports The traffic port connects to the Ethernet connecting to the internet service provider and the management port connects to the Netspan server. Enter the following parameters from the front panel of the AS4020. The values are determined by the server that the network is connected to.
Page 136: Set Nms Menu
Printed Documentation Set NMS Menu Management Port Num Port Number used to connect to Netspan Admin Password Password protection for the AS4020. When set only authorised persons can make changes to the AS4020 configuration. If changes are made Via Sitespan a password is requested if set. If no password is set Netspan still requests a password but any entry will be successful in allowing access to the configuration.
Page 137: Set Tx Power
Setup and Test Set TX Power The recommended single user TX output power (QPSK/16QAM) is +18dBm for 3.4-3.6GHz, +20dBm for 1.8-1.9GHz, and +21dBm for all other bands. This procedure is used to measure the TX output power when set up in commissioning mode 1. System Soak It is necessary that the system is powered up for at least two hours to allow for temperature stabilisation before proceeding with the measurement of the TX power...
Page 138 Printed Documentation Uplink Frequency Enter UL frequency kHz with leading 0 e.g 03522651 Channel Bandwidth 00002 (=3MHz) PN Code PN code as supplied** Mode 1 Note: If in commissioning mode the top menu RF Commissioning displays RF commissioning alarm Card Type enter card type ( See number on RF card) RX Sensitivity 02500...
Page 139 Setup and Test RF Card Cross Reference Chart RF Card Part AS4020 Card Band Number Type 605-0010-296 303-0087-904 3.4-3.6 Plan 13 X6 605-0010-092 303-0087-920 3.4-3.6 Plan 1 X1 605-0010-093 303-0087-920 3.4-3.6 Plan 1 X1 605-0010-102 303-0087-922 3.4-3.6 Plan 605-0010-103 303-0087-922 3.4-3.6 Plan 605-0010-237 303-0087-923...
Page 140 Printed Documentation Go to Top Menu >Setup Menu >RF Menu>TX Power TX power To set the CT to transmit at QPSK or 16QAM adjust the TX Power until the output of the transmitter by increasing or decreasing the value until the level tabulated below is reached.
Page 141: Set Rx Sensitivity Using A Dacu Without Calibrated Coupler
Setup and Test Set RX sensitivity using a DACU without Calibrated Coupler This procedure should be used to commission the CT if using a DACU. At the end of this test a label with the calibrated value should be attached to the coupler. Calibrated attenuators and cables are provided with the DACU for this test.
Page 142 Printed Documentation 3. Calculate/determine total path loss and required DACU output power and hence power meter reading. 4. Connect cables and equipment as per diagram below using 30+30+20dB calibrated attenuators. If coupler calibration known set up as in step 9 and go to step 6 5.
Page 143 Setup and Test attenuators Power meter reading with coupler Difference between readings Coupler loss if [c] is greater than [b] then subtract [d] from [a] if [c] is less than [b] then add [d] to [a] Table 2 11. Populate the table below with values obtained from calibrated components and planned levels to calculate/determine overall path loss and required ST output power and hence required power meter reading.
Page 144 Printed Documentation enabled does not mean that the equalizer is disabled but that the training of the equaliser is finished.) Check that the equalizer converges OK. 2. From the ST LAT type TE1 to exit commissioning mode 3. From the AS4020 front panel exit commissioning mode by selecting RF Commissioning = Off.
Page 145: Connecting The Dacu
Setup and Test Connecting the DACU The following cables are provided with the DACU. Airspan DACU Kitting List Description Comment DC Power Connects the dc power supply from the red and black 4mm sockets on the DACU, labelled “+” and “-“ to either the IDU dc power jack, Cord labelled “12V ---- 1.5A”, or an external IDU dc power jack...
Page 146 Printed Documentation Fit the RF Module The RF module is inserted into the compartment on the right of the DACU. it is secured using two hexagonal headed screws. Airspan RF Module Kitting List Description Comment RF Cable (4 Connects the coupler on the CT rack to the SMA socket on the RF Module, labelled “CT”...
Page 147 Setup and Test Attenuator Second and third in line from combiner (30dB), 5W Adaptor (N to Needed to connect N-type pads to 4m cable SMA) SMA Torque To tighten SMA's spanner Termination Terminates an unused power meter port (50 Ohm) Laminated A sheet showing a labelled photograph of all the RF Module Kit Kitting /...
Page 148: Set Rx Sensitivity Without A Dacu
Printed Documentation Set RX Sensitivity without a DACU Tools and equipment needed. Item Description Recommended Model Quantity Digital Multimeter Fluke 77 ST Test Unit, SIU with Modified Antenna at appropriate band 30dB Attenuators; Mini Circuits: BN-N30W5 30dB Attenuators; M/A-COM:2082 6044 30:2W Two Way Power Mini Circuits: ZAPD-4-S Divider...
Page 149 Setup and Test For networks where co or adjacent frequencies are reused to provide cellular type network coverage with limited available spectrum (ie. A relatively high level of co and adjacent channel interference), the following CT Rx levels apply: Modulation Rate Rx Level (dBm / RW) Session...
Page 150 Printed Documentation turn between the TX output and the power meter and measure the loss added as the component is inserted. Measure (1)A-B, (2)B-C, (3)C-D and (7)D-E. 7. Calculate and enter values in calibration chart for the relevant frequency. RF Channel No: Ref TX output RF Section A-B Atten.(1)
Page 151 Setup and Test 11. From the AS4020 front panel exit commissioning mode by selecting RF Commissioning = Off.
Page 152: Packet System Testing
Printed Documentation Packet System Testing Data Tests To pass Ethernet traffic through the AS4020 system, it will be necessary to transfer data between a Server connected to the “Traffic” Ethernet port of the AS4020 CT, and a PC connected to an ST. To test basic functionality, the following throughput speed tests are performed.
Page 153 FTP Server. This is clearly not a desirable mode in which to leave the PC when testing is completed. Airspan recommends as a minimum to turn off “write” access, via the “Home Directory”...
Page 154 However, as other utilities may not do this, the test files should not be compressible. To assist with this, Airspan provides a utility for generating uncompressible files of varying sizes. Inside the .zip file embedded below are two files –...
Page 155 Setup and Test Using the FTP Client, and automating the transfers: To perform the data transfers, an FTP Client running on a PC connected to an ST will download and upload data files to the FTP Server running on a computer connected to the same network as the Traffic Port of the AS4020.
Page 156 When the transfer is complete, the session will show you the transferred speed. An example transcript from Airspan’s Product Applications Laboratory is shown in the screenshot below: Note: As the FTP Client shows the speed at which the data in the file was transferred, it will not show you the actual data throughput over the air interface.
Page 157 “recv 10M 10M_downloadedfile” command will be replaced with, e.g. “send 1M 1M_uploadedfile”. Technical Note: An explanation of Ethernet, and Airspan protocol overheads in FTP transfers: The structure and relative sizes of the different portions of an Ethernet frame vary, but a full sized FTP data transfer Ethernet Frame is 1514 Bytes, consisting typically of: 1.
Page 158 Printed Documentation Therefore the “Ethernet” overhead is 100*1514/1460 = 3.7% Additionally, there is an overhead associated with Airspan’s air interface. The data is sent in small blocks, transmitted every 4ms on multiple RW channels simultaneously. Additionally, an ST can receive up to 4 blocks simultaneously. Each block has a 4 byte overhead.
Page 159: Voice Option Testing
Setup and Test Voice Option Testing Option Module Test It is only possible to fully test the voice module if the installation of the AC and the backhaul connections to the switch are in place. Netspan also needs to be connected. The card is set for 120ohm or 75ohm dependant on the type of backhaul selected on Netspan.
Page 160: Central Terminal Rack Commissioning Test Results
Printed Documentation Central Terminal Rack Commissioning Test Results Please photocopy test results sheet for use with each system CUSTOMER: SITE LOCATION: RACK ID: ENGINEER: DATE: Test Equipment Calibration Item Description Model Serial No Calibration Date Digital Multimeter RF Power Meter Power Sensor Test ST/DACU 60dB Variable...
Page 161 Setup and Test Note: The cable supplied with each DACU is calibrated for a range of frequencies. If a cable other than the original cable is used then an adjustment to the DACU output power to 98dB at the receiver must be made. i.e. If the substitute cable has a 1dB less loss than the original cable the output power for 98dB at the CT shown on the DACU needs to be reduced by 1dB from the value shown on the DACU calibration label Serial Number and Rev Level Record...
Page 162 Printed Documentation PSU3 Modem Shelves AS4020 shelf 1 AS4020 shelf 2 AS4020 shelf 3 AS4020 shelf 4 Rack ID TEST TEST LIMIT RESULT Site Inspection & Verification T1/E1Cabling Modem Shelf 1 Modem Shelf 2 Modem Shelf 3 Modem Shelf 4 System Commissioning Tests Test Exchange DC Voltage...
Page 163 Setup and Test...
Page 164 Printed Documentation AS4000- ACCESS CONCENTRATOR ACCEPTANCE FORM CONTRACT OR CUSTOMER'S REF. NO: AIRSPAN NETWORKS REF. NO: SITE IDENTITY: The Customer accepts that the following equipment has been supplied, installed and tested. Customer Representative Name:__________________________ Position:________________________________ Date:___________________________ Signature:______________________________ Airspan Representative Name:__________________________...
Page 165 Setup and Test Customer Representative Name:__________________________ Position:________________________________ Date:___________________________ Signature:______________________________ Airspan Representative Name:__________________________ Position:________________________________ Date:___________________________ Signature:______________________________ CUSTOMER COPY...
Page 167: General
The purpose of this document is to describe the actions that a customer needs to return a suspect faulty unit is returned to Airspan for repair or replacement. It details what actions need to be taken by Airspan and their Customers to ensure a clean flow of product. Forms Required The following forms are used when returning material for repair: ...
Page 168 The necessary fault information detailed below is enclosed with the returned item. If any of the conditions in sections a, b, and c above are not met, Airspan reserves the right to charge the customer the full standard repair charge for that item.
Page 169: Repair And Return Procedure
The normal process is for the customer to obtain a Return Material Authorisation (RMA) number, and then return the suspect faulty item to Airspan for repair. Airspan will repair the FRU, or replace it if appropriate, and return it to the customer. This RMA number should be quoted on all subsequent correspondence concerning the item.
Page 170 Printed Documentation...
Page 171  Description, part numbers, serial numbers and quantity of items to be returned b. Airspan will fax to the customer an RMA No, which should be quoted on all subsequent correspondence. c. For each item, complete a Return and Repair Tag (Appendix 1) and attach it to the item.
Page 172 RMA number and shipping instructions. b. On receipt of the item at the Uxbridge Repair Centre, Airspan will inspect it to confirm that it has been packaged securely and according to all applicable standards, and that it is of a recognised build standard.
Page 173 General In-Warranty Advance Replacement If a FRU is under warranty, and is critical to the customer’s system, Airspan will despatch a suitable replacement, if available, from the rotapool in advance of receiving the suspect item. Airspan will ship the replacement item from the nearest location holding rotapool stock of that item.
Page 174: Repair Charges
The standard charge for advance replacement of "in-warranty" FRUs is $200 per item. If the return item is not received at Airspan within 30 days from the date of shipment of the replacement , Airspan shall charge the customer the current list price of the replacement unit.
Page 175: Return & Repair Tag
Return & Repair Tag Airspan provides a tag to be attached to each item being returned. When completed, the tag provides sufficient information for the item to be tracked throughout the repair and return...
Page 176 Printed Documentation...
Page 177: Packing And Shipment
General Defective Equipment Information Form RMA Number (provided by Airspan) Card/Assembly Description Part Number and Revision (if Applicable) Serial Number Date Commissioned Date Fault Reported Location of Assembly in CT Rack Shelf Location of Subscriber Terminal SUBSCRIBER TERMINAL INFORMATION Power Supply Type (e.g. I, II or IV)
Page 178 The following procedures reduce the possibility of static discharge damage: a. Wearing a wrist strap while handling PCBs. b. Attach the string of the Airspan Return and Repair Tag to the ejector/injector of the PCB. c. Insert PCBs into approved static shielding bags with repair tags remaining outside the shielding bag.
Page 179 The customer should ship the item to the Customer Service Centre at Uxbridge unless Airspan has provided an alternative shipping address. The cost of shipping returns to Airspan for repair shall be borne by the customer, and all risks associated with the shipping remain the responsibility of the customer.
Page 180: Specifications
Printed Documentation Specifications Central Terminal The following tables provide technical specifications for the Central Terminal. PHYSICAL CHARACTERISTICS CT Rack Dimensions, (without Full Height Compact brackets): Width 600mm 600mm Height 2175mm 1500mm Depth 300mm 300mm Shipping Weight: Rack Frame 60 kg Air Inlets/Outlets 16.5 kg Combiner Shelf...
Page 181 General Storage Humidity, non-condensing Less than 100% Air Pressure 70 kPa 106 kPa POWER REQUIREMENTS DC Input Voltage Operating Range. (N.B. Maximum Range, -36.0V DC to - This supply to be a guaranteed SELV from an 60.0V DC @ 540W EN60950 approved source.) DC Input Current (Fully populated CT Rack) 11.5 Amps max.
Page 182: Copyright Information
Airspan provides a range of comprehensive training courses specifically aimed at providing operators/users of Airspan products with the prerequisite skills to install, commission and or maintain the product. The courses are tailored to provide the level of training required by the operator/user.
Page 183: Contact Information
General Contact Information UK Office for sales and general enquiries Airspan Communications Ltd Cambridge House Oxford Road Uxbridge Middlesex UB8 1UN Call +44 (0) 1895 467100 Fax +44 (0) 1895 467101 email sales@ airspan.com Internet: Airspan.com Customer Service Help-Desk for customer service emergency...
Page 184: Problems With This Guide
Printed Documentation Problems with this Guide If you encounter any problems or difficulty using this guide. Please Contact: Malcolm Windett The Documentation Manager Airspan Communications Ltd Cambridge House Oxford Road Uxbridge Middlesex UB8 1UN Call +44 (0) 1895 467185 Fax +44 (0) 1895 467182 email mwindett@ airspan.com...
Page 185: Document Purpose
The courses can be tailored to provide the level of training required by the operator/user. This manual is intended for use by persons familiar with the AS4000/AS4020 product having attended the Airspan Central Terminal Installation and Commissioning training course prior to performing the procedures in this practice.
Page 186: Warnings And Cautions
Remove rings, watches etc. to avoid shorting DC circuits. The CE Marking on an Airspan product signifies that it has been certified according to the EMC directive 89/336/EECand the low voltage directive 73123/EEC or the Radio &...
Page 187 The Electromagnetic fields generated by the Central Terminal antenna are below the recommended safe levels at all distances greater than 65 cm from an approved Airspan antenna. The safe distance from a non-approved antenna of length D and Sector Angle δ may be calculated using the formula: Safe distance, r = 36 / (π...
Page 188: Issue Status
Printed Documentation Issue Status Issue Date Notes Rev A December-2002 Release 7.10 Rev B July 2003 Release 7.11 Rev C September-2003 Release 7.20 Rev D September-2003 Release 7.20 changes to DACU. Rev E October 2003 Release 7.21 Rev F January 2004 Release 7.22 Rev G January 2004...
Page 189: Glossary
Glossary A/D: Analogue/Digital AC: Access Concentrator ADPCM: Adaptive Differential Pulse Code Modulation AGC: Automatic Gain Control AIS: Alarm Indication Signal or All Ones AMI: Alternate Mark Inversion AU: Analogue Unit BER: BIT Error Rate CAS: Channel Associated Signalling CPE: Customer Premises Equipment CT: Central Terminal CTU: Concentrated Tributary Unit CU: Compression Unit...
Page 190 Printed Documentation I/0: Input/Output IP: Internet Protocol IS: In Service ISDN: Integrated Services Digital Network ITU-T: International Telecommunications Union -Telecommunications LAT: Local Access Terminal LED: Light Emitting Diode LNA: Low Noise Amplifier MF: Multi-Frequency MODEM: Modulator/Demodulator MON: Monitor MSTP: Modem Shelf Termination Panel MU: Modem Unit NTU: Network Termination Unit NVRAM: Non Volatile Random Access Memory...
Page 191 Glossary STP: Shelf Termination Panel TCP: Transmission Control Protocol TEI: Terminal Equipment Identifier TU: Tributary Unit TU8: Tributary Unit Eight E1 ports TX: Transmit UCP: Uplink Code Phase VDU: Video Display Unit VF: Voice Frequency XTU: Exchange Tributary Unit...
Page 193: Index
Index Modification for Directional Antenna ..64 AS4000 Racks ........1 overhead Ironwork ........ 13 Cable Trays..........4 Commissioning Access Concentrator Rack Positioning and Securing Racks.... 13 ............97 PSU Voltage Combiner Shelves..113 Commissioning Central Terminal Rack ..97 PSU Voltage DA Modem Shelves Commissioning Process ......97...

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