User’s Manual for Node C Prototype Network Elements with Interface Unit ID No: 161692 PRELIMINARY Page 1
User’s Manual for Node C Network Elements © Copyright 2004 Mikom GmbH All rights reserved. All information contained in this manual has been revised thoroughly. Yet Mikom An Andrew Company accepts no liability for any omissions or faults. Mikom An Andrew Company reserves the right to change all hard- and software characteristics without notice. Names of products mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies.
TABLE OF CONTENTS 1 GENERAL 7 1.1 ABBREVIATIONS 7 1.2 HEALTH AND SAFETY WARNINGS 8 1.3 PREAMBLE 9 1.4 INTERNATIONAL CONTACT ADDRESSES 2 INTRODUCTION 10 11 2.1 PURPOSE 11 2.2 THE NODE C NETWORK ELEMENT 11 2.3 QUICK START CHECKLIST 12 3 INSTALLATION 13 3.1 3.1.1 3.1.2 3.1.3 3.1.4 MECHANICAL INSTALLATION General Wall Mounting Procedure Connection Option Pole Mounting Procedures 13 13 14 16 17 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.
User’s Manual for Node C Network Elements 5 FUNCTIONAL DESCRIPTION 69 5.1 GENERAL 69 5.2 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 FEATURES OF THE NODE C Filters Digital ICE (Digital Interference Cancellation Equipment) VSWR (Voltage Standing Wave Ratio) RSSI (Receive Signal Strength Indication) Alarmforwarding External Alarms Summary Alarm 72 72 72 73 73 73 74 75 5.3 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 5.3.
FIGURES AND TABLES figure 3-1 Positions of drilling holes........................................................................................14 figure 3-2 Wall mounting procedure .......................................................................................15 figure 3-3 Connection option ..................................................................................................16 figure 3-4 Cabinet combining kit.............................................................................
User’s Manual for Node C Network Elements table 1-1 List of international contact addresses ....................................................................10 table 3-1 Mounting distance ...................................................................................................14 table 3-2 Required length of thread-bolts and cable bridge ...................................................17 table 3-3 Components of pole mounting kits ..............................................................
1 General 1 GENERAL 1.
User’s Manual for Node C Network Elements 1.2 HEALTH AND SAFETY WARNINGS 1. Only suitably qualified personnel is allowed to work on this unit and only after becoming familiar with all safety notices, installation, operation and maintenance procedures contained in this manual. 2. Read and obey all the warning labels attached to the unit. Make sure that the warning labels are kept in a legible condition and replace any missing or damaged labels. 3.
1 General 1.3 PREAMBLE Mikom An Andrew Company is a leading manufacturer of coverage equipment for mobile radio networks, specializing in low cost, high performance, RF and optical repeaters. Our optical distributed networks and RF repeater systems provide coverage for every application: outdoor use, indoor installations, tunnels, subways and many more. Mikom has engineering and manufacturing facilities in Germany, Italy and the USA.
User’s Manual for Node C Network Elements 1.4 INTERNATIONAL CONTACT ADDRESSES in Australia in France in the USA 6 Stuart Street Padstow NSW 2211 Z.I. des Ebisoires 78370 Plaisir Australia France 108 Rand Park Drive Garner NC 27529 USA Phone: +61 (2) 9774-4200 Fax: +61 (2) 9774-4500 email: Phone: +33 (1)30-79-15-36 Fax: +33 (1) 30-55-55-37 email: Phone: +1 (919) 771-2570 Fax: + 1 (919) 771email: WIsupport.australia@andrew.com WIsupport.france@andrew.com WIsupport.us@andrew.
2 Introduction 2 INTRODUCTION 2.1 PURPOSE Wireless communication systems provide a two-way information transfer (voice and data) between a base station and multiple mobiles within a given area. Environmental variables such as physical structures both man-made (buildings) and natural (mountains) attenuate signals in the transmission path, which reduce the transport signal’s strength. This attenuation leads to a reduction in quality and data rate and eventually prohibits the system’s use entirely.
User’s Manual for Node C Network Elements 2.3 QUICK START CHECKLIST Read the health and safety warnings in chapter 1.2 Health and Safety Warnings. Setting up the Node C is quick and easy. The following step-by-step procedure provides a quick overview for a correct setup and optimization. a. Required Equipment • Node C • donor antenna • coverage antenna(s) or DAS • coaxial feeder cable • connectors • laptop with connection and mains cable b.
3 Installation 3 INSTALLATION 3.1 MECHANICAL INSTALLATION 3.1.1 General Read the health and safety warnings in chapter 1.2 Health and Safety Warnings. 1. Do not install the unit in a way or at a place where the specifications outlined in the Environmental and Safety Specifications leaflet of the manufacturer are not met. 2. It is recommended only to use the mounting hardware delivered by the manufacturer.
User’s Manual for Node C Network Elements 3.1.2 Wall Mounting Procedure • Check the wall mounting kit and the wall to determine their suitability. • The maximum distance between the Node C and the Interface Unit depends on the length of the cable bridge (standard length is 500 mm) by which they will be connected (see table 3-1 Mounting distance). Thus, before marking the mounting positions, check the length of the cable bridge and make sure to install the units at a suitable distance.
3 Installation ) Note: • * Ensure that there is free access to the electrical connections as well as to the cabinet. The approved bending radius of the connected cables must not be exceeded. Drill eight holes (four per unit) at the marked positions and insert dowels*. The dowels are not part of the delivery (and thus not illustrated in the figure) since the suitable type depends on the on-site conditions (the material of wall). Therefore, use dowels that are appropriate for the mounting surface.
User’s Manual for Node C Network Elements 3.1.3 Connection Option • In order to mount the system using the cabinet combining kit, dismount the mounting brackets from the cabinets of the units by loosening the hexagon head screws M10x20 by which the brackets are screwed to the housing (four per unit). Do not unscrew those screws, only loosen them by approx. three turns and take off the brackets.
3 Installation 3.1.4 Pole Mounting Procedures The following figure illustrates the two pole mounting options: back-to-back (left) and two systems (right). figure 3-5 Pole mounted systems • Before starting the mounting procedure, check the pole diameter of the pole to which the units will be installed; then, cut the thread-bolts (see table 3-3 Components of pole mounting kits, pos.
User’s Manual for Node C Network Elements Both types of pole mounting kit consist of the following parts (in different quantities): No 1 2 3 4 Part Pole mounting brace Washer DIN 9021 – 8.4 Nut M8 DIN 934 Spring ring DIN 127 – A8 No 5 6 7 8 Part Thread-bolt M8 Washer M8 DIN 125 Hexagon head screw M8 Fastener table 3-3 Components of pole mounting kits The numbers in the above table refer to the numbering of the components in the following figures.
3 Installation • In case of two systems (figure 3-7) first mount the mounting brackets of the Node C units; then adjust and mount the fasteners (no. 8) accordingly before fastening the mounting brackets of the Interface Units to the fasteners. • Hang the units into the respective mounting brackets and fasten the hexagon head screws M10x20.
User’s Manual for Node C Network Elements 3.2 ELECTRICAL INSTALLATION 3.2.1 General Read the health and safety warnings in chapter 1.2 Health and Safety Warnings. 1. This unit contains dangerous voltages. Loss of life, severe personal injury or property damage can be the result if the instructions contained in this manual are not followed. 2. It is compulsory to ground the unit before connecting power supply. A grounding bolt is provided on the cabinet to connect the ground bonding cable. 3.
3 Installation 3.2.2 Grounding Grounding the Node C and Interface Unit is mandatory. Connect an earth bonding cable to the grounding connections provided at the cabinets of both the Node C and Interface Unit according to the following illustrations. Do not use the grounding connections to connect external devices. Cable bridge connectors Node C cabinet Cabinet of Interface Unit figure 3-8 Grounding bolts figure 3-9 Grounding a system The PE cables must have a minimum cross section of 10mm2.
User’s Manual for Node C Network Elements 3.2.3 Power Connection Before connecting electrical power to the units, the system must be grounded as described in the previous chapter. Mains power must be connected at the mains connector of the Interface Unit. The power supply plug is included with the Node C. The correct wiring of the power supply plug is as follows: Mains figure 3-10 Power supply plug figure 3-11 Mains connector A minimum cross section of 1.
3 Installation 3.2.4 Connection of the Antenna Cables The Node C’s antenna connectors are 7/16 female equipped with an N female adapter. All connectors are located at the bottom of the cabinet. An operator should refer to the documentation of the cable connector manufacturer for best mating procedures. Furthermore, the bending radius of the antenna cables should be maintained at all times. There are several issues to be considered when selecting the cable and antenna types.
User’s Manual for Node C Network Elements The cable bridge connectors are located at the bottom of the Node C and Interface Unit. Cable bridge connector Antenna connnectors figure 3-13 Connector panel of the Node C Antenna connector for modem (operating in different network) Cable glands for external alarms, summary alarm & PSTN Cable bridge connector Mains power connectors figure 3-14 Connector panel of the Interface Unit 3.2.
4 Commissioning 4 COMMISSIONING 4.1 GENERAL Read the health and safety warnings in chapter 1.2 Health and Safety Warnings and observe the following step-by-step procedure. • Do not operate the Node C without terminating the antenna connectors. The antenna connectors may be terminated by connecting them to their respective antennas or to a dummy load.
User’s Manual for Node C Network Elements 4.2 SOFTWARE SETUP 4.2.1 Remote Control For remote control and/or supervision of the Node C the following services are provided: • An OMC-type software platform (see separate manual) • SMS alarm-forwarding (for details see chapter 5.2.5 Alarmforwarding) • Web page (see chapter 4.2.4 and online-help) 4.2.
4 Commissioning 4.2.3.2 Installing the USB driver The USB adapter and the driver CD are located inside the Interface Unit: Driver CD USB adapter with USB cable Position of optional modem RS232 connector for USB or null modem cable connection figure 4-3 USB and null modem cable connection When the USB adapter is connected to a PC for the first time, the USB driver must be installed. The Node C and Interface Unit must be switched on for the procedure.
User’s Manual for Node C Network Elements 4.2.3.3 Direct connection for Windows XP a) Setting up the device for the direct connection 1. To start the Phone and Modem Options, choose Start→Control Panel→Phone and Modem Options. 2. Select the Modems tab and click the Add... button. 3. Choose to select from a list. Click Next. Page 28 M0121A1A_uc.
4 Commissioning 4. For a direct connection choose the Communication cable between two computers as device. Click Next. 5. Select your port (usually COM1 for a direct connection), continue with Next, and in the next window click Finish.
User’s Manual for Node C Network Elements b) Setting up a direct connection 1. Choose Start→Control Panel→Network Connections→New Connection Wizard. 2. The first page is the Welcome window: Continue with Next. 3. In the Network Connection Type window, select Set up an advanced connection. Click Next. Page 30 M0121A1A_uc.
4 Commissioning 4. In the Advanced Connection Options, choose Connect directly to another computer. Click Next. 5. In the next window choose Guest. Click Next. 6. Next, enter a name for the new connection. Click Next.
User’s Manual for Node C Network Elements 7. The next window is Select a Device. This window will provide a drop-down list of known communication ports (devices) to choose from. Choose a serial port. If the RS232 is used, this port is most likely (COM1). If a USB port is used some other COM port number should be used. In such a case, take care that the USB driver is installed and connected before completing this selection or the connection will not work. Click Next. 8.
4 Commissioning 10. In the Connection window, enter User name and Password. Select to Save user name and password ... for Me only.. Enter: User name: Password: Click Properties. 11. Under the General tab ensure the correct device is selected. Click Configure, and in the Modem Configuration window, choose 57600 for Maximum speed. No other box should be checked. Click OK. 12.
User’s Manual for Node C Network Elements 13. Select the Security tab, select Advanced (custom settings), and click Settings. 14. Only allow Challenge Handshake Authentication Protocol (CHAP) Microsoft CHAP (MS-CHAP) and Microsoft CHAP Version 2 (MS-CHAP v2) protocols. Click OK. 15. Click Typical and choose Require secured password. Click OK. Page 34 M0121A1A_uc.
4 Commissioning 16. Select the Networking tab and click the Settings button. There are 3 PPP settings. Make sure they are all OFF and click OK. 17. In the Networking window, highlight the Internet Protocol (TCP/IP) component and click the Properties tab. 18. Obtain an IP address automatically and Obtain DNS server address automatically must be checked. Click Advanced.
User’s Manual for Node C Network Elements 19. In the General tab, uncheck all boxes. In the DNS tab, make sure Append primary and Append parent and Register this connection are checked. In the WINS tab, make sure Enable LMHOSTS lookup is checked. Click OK. 20. For Internet Connection Firewall and Internet Connection Sharing settings, select the Advanced tab. Click OK to get back to the Connect window. 21. The connection procedure is described in the following.
4 Commissioning c) Establishing the connection 1. Choose Start→Control Panel→Network Connections→ (i.e. in this example “DCM_Local”). The properties of this connection should already have been setup. 2. Enter in the User name field. Enter in the Password field. Select to Save this user name and password ... for Me only. Click Connect .
User’s Manual for Node C Network Elements 4.2.3.4 Modem connection for Windows XP a) Setting up the device for the modem connection 1. To start the Phone and Modem Options, choose Start→Control Panel→Phone and Modem Options. 2. Select the Modems tab and click the Add... button. 3. Choose to select from a list. Click Next. Page 38 M0121A1A_uc.
4 Commissioning 4. For a modem connection, choose the Standard 19200 bps Modem as device. Click Next. 5. Select your port (usually COM2 for a modem connection), continue with Next, and in the next window click Finish.
User’s Manual for Node C Network Elements b) Setting up a modem connection 1. To start, choose Start→Control Connection Wizard. Panel→Network Connections→New 2. The first window is the Welcome window: Continue with Next. 3. In the Network Connection Type window, select Connect to the network at my workplace. Click Next. Page 40 M0121A1A_uc.
4 Commissioning 4. In the Network Connection window, choose Dial-up connection. Click Next. 5. Select the Standard 19200 bps Modem as device. Click Next. 6. Next, enter a name for the new connection.
User’s Manual for Node C Network Elements 7. In the next window enter the phone number of the modem that is installed in the Node C. Click Next. 8. The next window is Connection Availability. Choose My use only. Click Next. 9. In the window Completing the New Connection Wizard, choose whether to add a shortcut to the desktop. Click Finish Page 42 M0121A1A_uc.
4 Commissioning 10. In the Connection window, enter username and password. Select to Save user name and password ... for Me only. Enter: User name: Password: Click Properties. 11. Under the General tab ensure the correct device is selected. Click Configure, and in the Modem Configuration window, choose 19200 for Maximum speed. No other box should be checked. Click OK. 12. Select the Options tab and make sure that all dialling options except Include Windows logon domain are checked.
User’s Manual for Node C Network Elements 13. Select the Security tab, select Advanced (custom settings), and click Settings. 14. Only allow Challenge Handshake Authentication Protocol (CHAP) Challenge Handshake Authentication Protocol (CHAP) Microsoft CHAP (MS-CHAP) and Microsoft CHAP Version 2 (MS-CHAP v2) protocols. Click OK. 15. Click Typical and choose Require secured password. Click OK. Page 44 M0121A1A_uc.
4 Commissioning 16. Select the Networking tab and click the Settings button. There are 3 PPP settings. Make sure they are all OFF and click OK. 17. In the Networking window, highlight the Internet Protocol (TCP/IP) component and click the Properties tab. 18. Obtain an IP address automatically and Obtain DNS server address automatically must be checked. Click Advanced.
User’s Manual for Node C Network Elements 19. In the General tab, uncheck all boxes. In the DNS tab, make sure Append primary and Append parent and Register this connection are checked. In the WINS tab, make sure Enable LMHOSTS lookup is checked. Click OK. 20. For Internet Connection Firewall and Internet Connection Sharing settings, select the Advanced tab. Click OK to get back to the Connect window. 21. The connection procedure is described in the following.
4 Commissioning c) Establishing the connection 1. Choose Start→Control Panel→Network Connections→ (i.e. in this example “DCM_via_Modem”). The properties of this connection should already have been setup. 2. Enter the term “username” in the User name field and the term “password” in the Password field as shown below. Select to Save this user name and password ... for Me only. Click Connect.
User’s Manual for Node C Network Elements 4.2.3.5 Direct connection for Windows 2000 a) Setting up the device for the direct connection 1. To start the Phone and Modem Options, click Start→Settings→Control Panel→Phone and Modem Options. 2. Click the Modems tab and choose Add... . 3. Choose to select from a list, click Next. Page 48 M0121A1A_uc.
4 Commissioning 4. Select your port, continue with Next, and in the next window click Finish. 5. Highlight the port associated with the direct connection of the RS232 or USB port. Click Properties.
User’s Manual for Node C Network Elements 6. In the General tab, change the port speed to 57600. Click the Advanced tab. Click the Change Default Preferences tab. 7. Set the Port speed to 57600 and the Flow control to None. Click the Advanced tab. Set Data bits to 8. Set Parity to None. Set Stop bits to 1. 8. Click OK several times to exit all the windows. The modem configuration is now complete. Page 50 M0121A1A_uc.
4 Commissioning b) Setting up a direct connection 1. Start the Network Connection Wizard. Click Start→Settings→Network and Dial-up Connections →Make New Connection. 2. The first window is the Welcome window as shown below. Click Next. 3. The next window is Network Connection Type. Select Connect directly to another computer. Click Next.
User’s Manual for Node C Network Elements 4. The next window is Host or Guest. Choose Guest. Click Next. 5. The next window is Select a Device. This window will provide a drop-down list of known communication ports (devices) to choose from. Choose a serial port. If the RS232 is used, this port is most likely (COM1). If a USB port is used some other COM port number should be used. Take care that the USB driver is installed and connected before completing this selection or the connection will not work.
4 Commissioning 7. The next window is the Complete the Network Connection Wizard. Enter Node C as the name for the connection. Click Finish. 8. The next window is the Connection window Enter in the User Name field. Enter in the Password field. Check Save Password. Click Properties. 9. Under the General tab ensure the correct device is selected. Click Configure.
User’s Manual for Node C Network Elements 10. Choose 57600 for Maximum speed. All other boxes should not be checked. Click OK. 11. Click the Security tab. Click Advanced (custom settings). Click Settings. Page 54 M0121A1A_uc.
4 Commissioning 12. Make sure Challenge Handshake Authentication Protocol (CHAP) Microsoft CHAP (MS-CHAP) Microsoft CHAP Version 2 (MS-CHAP v2) are checked and all the rest of the boxes are NOT checked. Click OK. 13. Click Typical and choose Require secured password.
User’s Manual for Node C Network Elements 14. Click the Networking tab. Click the Settings button. There are 3 PPP settings. Make sure they are all OFF. Click OK on the PPP Setting window. 15. Highlight the Internet Protocol (TCP/IP) component. Click the Properties tab. Click Obtain an IP address automatically. Click Obtain DNS server address automatically Click Advanced. Page 56 M0121A1A_uc.
4 Commissioning 16. In the General tab, uncheck all boxes. In the DNS tab, make sure Append primary and Append parent and Register this connection are checked. 17. Click the WINS tab. Make sure Enable LMHOSTS lookup is checked. Click the Options tab. Click Properties.
User’s Manual for Node C Network Elements 18. Click Do not use IPSEC. Click OK. Returning to the Options tab click OK and return back to the main window. 19. Click the Sharing tab. Make sure that Shared access is OFF. Click OK. Page 58 M0121A1A_uc.
4 Commissioning c) Establishing the connection 1. Click Start→Settings→Network and Dial-up Connections→Node C. The properties of this connection should already have been setup. Enter in the User Name field. Enter in the Password field. Check Save Password. Click Connect and the following connection windows will appear. 2. When the connection is successful an icon will appear in the system tray. This icon will “light up” to indicate network activity between the computer and the Node C.
User’s Manual for Node C Network Elements 4.2.3.6 Accessing the web page 1. Open Internet Explorer and enter the address: 1.2.1.1. Enter in the User Name field. Enter in the Password field. Note that these fields are case-sensitive. 2. After the login, the home page will appear. From this page the entire Node C may be controlled. The most important menus will be explained in the following chapter.
4 Commissioning 4.2.4 Main Menus of the Web Page For detailed information about a menu click the “Help” button to open the online help. 4.2.4.1 Setup Wizard This menu serves to align the donor antenna and provides overviews of all channels on air as wells as channel assignment.
User’s Manual for Node C Network Elements b) Typical Tuning Procedure (See example table below): 1. Point the donor antenna in the general direction of the donor base station. 2. Start the AAA. 3. Verify that the reported DL Rx Power is above –90dBm. If not, orient the antenna until the signal is above –90dBm. 4. Wait for Pilot RSCP results to be reported (indicating that a valid pilot has been found). 5.
4 Commissioning c) Notes on the AAA Measurement Results: 1. The DL RX Power is the total power in the selected 5 MHz channel. The DL Rx Power measurement is updated approximately once per second. 2. The Pilot Received Signal Code Power (RSCP) measurements are updated approximately once every four seconds after the antenna assistant finds a valid pilot channel within the selected 5MHz bandwidth. It may take up to one minute to perform the initial scan and report Pilot RSCP results. 3.
User’s Manual for Node C Network Elements 4.2.4.3 Technician Setup figure 4-7 Technician Setup menu Description Explanation Filter Selection Select the frequency range for channel 1, 2 and 3; for filter setting refer to chapter 5.2.1 Filters. Filter Power to Total Power Ratio Enter ratio of pilot power to total power (depending on base station). Downlink Power Downlink Gain Select Power mode or Gain mode and set the desired power or gain, respectively.
4 Commissioning 4.2.4.4 Alarm Management figure 4-8 Alarm Management menu Column Description 1 ID Clicking any of the number buttons opens a submenu * for the respective component/feature. 2 Module All components and features listed in this column can be monitored via software. Current 3 Status The cell colour (see [4] below) indicates whether an alarm is active.
User’s Manual for Node C Network Elements 4.3 TROUBLESHOOTING Connection Problem: After clicking Connect, the progression goes from Dialling to a Connection Error as shown below. Possible Solutions: I. The connection is not configured properly. a. Click Properties→Configure in the Direct Connection window. Make sure Speed is set at 57600. Make sure no flow control is checked. b. Click Start→Settings→Control Panel→ Phone and Modem Options. Go to the Modem tab. Highlight the used modem connection.
4 Commissioning Connection Problem: After entering the Node C address, an HTTP error page is returned instead of the login page. Possible Solution: I. If the computer is connected to another network, the HTTP request may be going out to that network instead of to the Node C. This is likely if after entering the Node C address, the Direction Connection icon does not light up with activity. a. Click Start→Run Type cmd to get a dos prompt. Type ipconfig /all b.
User’s Manual for Node C Network Elements For your notes: Page 68 M0121A1A_uc.
5 Functional Description 5 FUNCTIONAL DESCRIPTION 5.1 GENERAL The following figure shows the DC block diagram of the Node C.
User’s Manual for Node C Network Elements The following figure shows the RF block diagram of the Node C. figure 5-2 Configuration of a Node C network element The Node C is designed to amplify signals between multiple mobiles and a base station in a CDMA system. The unit consists of a filter and amplifier chain in the downlink and one or two filters and amplifier chains in the uplink (primary and diversity). The uplink and downlink paths are connected via a duplexer on both ends of each path.
5 Functional Description In the primary uplink path, a signal originating from the mobile is separated from the downlink signal via the primary UL IN duplexer. It is then amplified by an integrated low noise amplifier (LNA) and forwarded to the uplink digital channel module (DCM). The DCM down-converts the signal to base-band, digitally filters it, amplifies it and then up-converts it. In addition the interference cancellation technology is implemented in the DCM.
User’s Manual for Node C Network Elements 5.2 FEATURES OF THE NODE C 5.2.1 Filters Filters are set automatically according to the channels set in “Setup Wizard” or “Technician Setup”. For further information about these menus refer to chapters 4.2.4.1 and 4.2.4.3. Possible filters are: 5 10 , One WCDMA channel 15 , two adjacent WCDMA channels 5 5 5 MHz and three adjacent WCDMA channels two WCDMA channels; intermediate channel not used 5.2.
5 Functional Description 5.2.3 VSWR (Voltage Standing Wave Ratio) This feature enables the provider to query the status of the antenna system (antenna & cable). The voltage standing wave ratio of the DL output antenna port is measured. If the VSWR falls below the value set in the “Alarming Management” (see chapter 4.2.4.4), an alarm is released. The alarm can be forwarded to the OMC where the faults and irregularities can be acknowledged and eliminated promptly.
User’s Manual for Node C Network Elements 5.2.6 External Alarms The external alarms are used to monitor the status of one or more external devices via the Node C. A UPS or entry alarm is among the items that might be connected to the contact relay and monitored via the Node C. The cage clamp connectors are located on the distribution & alarm board of the Interface Unit. Observe that the cross-sectional area of the wires to be connected must be in the range from 0.5 - 1.0 mm2.
5 Functional Description 5.2.7 Summary Alarm The summary alarm is a DC insulated contact relay. Observe that the cross-sectional area of the wires to be connected must be in the range from 0.14 - 1.5 mm2. Summary alarm relay contact figure 5-5 Summary alarm relay The following table indicates the three-connector pin out. Pin No.
User’s Manual for Node C Network Elements 5.3 COMPONENTS OF THE NODE C AND INTERFACE UNIT The actual configuration can be seen at the configuration list*, which is part of the delivery. The following figure shows a Node C 1943** (layout of Node C 843 is the same) and an Interface Unit with PSU redundancy option (two power supplies). * To be replaced by an electronic door label that will be accessible via software & remote control.
5 Functional Description The DL duplexer has multiple outputs, including the primary and extension path, plus forward and reverse probes used for auto setup, VSWR, and RSSI functions. LNA figure 5-7 Duplexer, DL IN The UL IN duplexer of the Node C is equipped with a diversity filter. The duplexer is used for the primary uplink path and is shared with the downlink output.
User’s Manual for Node C Network Elements 5.3.2 RF and DC Distribution Unit The RF and DC distribution unit is mounted between the duplexers and DCMs. It is the physical transport layer for communication between the downlink DCM (which has the integrated controller) and other sub-components of the Node C (see also chapter 3.2.5 Connection of Cable Bridge).
5 Functional Description 5.3.3 Digital Channel Module (DCM) The task of the digital channel module (DCM) is to filter and amplify any signals passing through it. In addition it takes measurements of the input and output signals and decodes the air interface to ensure proper setup and operation.
User’s Manual for Node C Network Elements 5.3.4 Uplink Final Amplifier The UL path is amplified by a final amplifier for high output power. figure 5-11 Uplink final amplifier 5.3.5 Downlink Final Amplifier In the DL path, an error-correcting feed-forward amplifier, which has a high output power while maintaining superior intermodulation and linearity performance, is used as final stage. In the Node C x37 a 37 dBm (2 W) average power final amplifier is used.
5 Functional Description In the Node C x43 a 43 dBm (20 W) average power final amplifier is used.
User’s Manual for Node C Network Elements 5.3.6 Distribution & Alarm Board The distribution & alarm board of the Interface Unit is the main connection point for the user. It has the external alarm clamps, RS232 connectors, for local or modem connection, as well as a summary alarm relays. The following figures show one blank board and an installed one with battery backup.
5 Functional Description 5.3.7 Power Supply The power supply, which is mounted in the Interface Unit, transforms AC mains power into a predefined DC voltage. When performing maintenance, ensure that all circuits are voltage-free and that the Node C is disconnected from mains. The Node C may be equipped with a second power supply for redundancy. figure 5-16 Power supply 5.4 OPTIONAL EQUIPMENT The actual configuration can be seen at the configuration list*, which is part of the delivery.
User’s Manual for Node C Network Elements À Check the communication mode between the modem and the terminal. The following parameters should be set for a GSM modem. Bit rate / bit per second: 9600 baud Number of data bit: 8 bit Parity bit: No parity Stop bit: 1 stop bit These settings may only be changed locally. Should a different modem be used, the operator should ensure that the settings are changed prior to leaving the site. 5.4.1.
5 Functional Description 5.4.1.3 Battery Backup In case power fails, a battery backup system for controller and modem has been implemented. This provides enough power for the controller that is integrated into the downlink DCM and the modem to operate for a limited period of time (see chapter 7.2.3 Specifications for Optional Equipment for battery backup time). Within this time, the Node C will initiate a call to the OMC and alert the operator that power has been lost.
User’s Manual for Node C Network Elements When the battery is charging, an LED on the module turns on. When the battery is fully charged, the LED will switch off. The location of the battery backup parts are illustrated in figure 6-2 Location of battery backup. For technical data of the battery backup module refer to chapter 7.2.3 Specifications for Optional Equipment. 5.4.2 PSU Redundancy The Node C Interface Unit may be equipped with two power supplies. This guarantees full power redundancy.
6 Maintenance 6 MAINTENANCE 6.1 GENERAL Read the health and safety warnings in chapter 1.2 Health and Safety Warnings. ) Note: The Node C does not require any preventative maintenance measures. It is only recommended to replace the battery pack of the battery backup option after two years of usage as a preventive measure. The nominal lifetime of the battery pack is approx. two years under normal environmental conditions.
User’s Manual for Node C Network Elements SMA connectors have a specified torque of 100 Ncm. Use an appropriate tool to fasten and unfasten these. Do no over tighten the connectors or screws. The table below shows various screws with their respective torques. Screw Type Thread size M 2.0 M 2.5 M 3.0 M 4.0 M 5.0 Tallow-drop 40 82 145 330 650 Socket head cap Countersunk head Specified Torque (in Ncm) not in use 40 not in use 82 100 145 330 330 tbd.
6 Maintenance 6.2.2 Battery Backup Snap connectors Battery pack Battery charge module figure 6-2 Location of battery backup • Before removing the battery charge module and battery, disconnect the battery cable from the battery charge module (see also figure 5-17 Battery backup). • The battery can now be unplugged easily. • Release the charger from the two snap connectors by which it is fastened and disconnect it from its socket on the distribution & alarm board.
User’s Manual for Node C Network Elements • Take off the fan unit and disconnect the connector cable from the cabinet. Disconnecting the fan connector cable Positioning the fan connector cable figure 6-4 Fan connector cable • 6.2.4 To install the new fan unit, proceed in reverse order. In order not to squeeze the fan connector cable, take care to position it correctly after its reconnection. Modem The optional modem is screwed to a mounting plate which is fastened to the cabinet.
7 Appendix 7 APPENDIX 7.1 ILLUSTRATIONS 7.1.
User’s Manual for Node C Network Elements figure 7-2 Cabinet of a Node C Interface Unit Page 92 M0121A1A_uc.
7 Appendix 7.1.
User’s Manual for Node C Network Elements figure 7-4 Layout of the Node C 1943, exemplary Page 94 M0121A1A_uc.
7 Appendix Position for optional modem figure 7-5 Layout of the Interface Unit, exemplary ID No: 161692 PRELIMINARY Page 95
User’s Manual for Node C Network Elements 7.2 SPECIFICATIONS 7.2.1 Electrical Specifications ) Note: For detailed information, refer to the Environmental and Safety Specifications leaflet of the supplier. Type Frequency Option 1: Option 2: 1 CDMA carrier DL output 2 CDMA carriers power * 4 CDMA carriers UL composite output power Output power step size Output power accuracy over all conditions Min. DL input power for full output power Max. input power without damage Min. antenna isolation for max.
7 Appendix Type Frequency Option 1: Option 2: 1 CDMA carrier DL output 2 CDMA carriers power * 4 CDMA carriers UL composite output power Output power step size Output power accuracy over all conditions Min. DL input power for full output power Max. input power without damage Min. antenna isolation for max.
User’s Manual for Node C Network Elements 7.2.2 Mechanical Specifications Description Node C x37 Height, width, depth Weight * Cooling Node C x43 546 x 320 x 260 mm 22 kg Natural convection in the door and on the back Acoustic noise None Description 25 kg Twin redundant fans in the door Natural convection on the back 45 dBA typ. @ 25°C ambient 58 dBA typ.
7 Appendix 7.3 PARTSLISTS The following lists contain a list of all FRUs that are available for the Node C and Interface Unit. The Node C configuration is available in the configuration list1, which is delivered with the unit. Please observe that in the following lists only the components marked * may be replaced on site. If the replacement of any other component in this list is required, please contact customer service for assistance.
User’s Manual for Node C Network Elements 7.3.2 Node C NodeC Type 837 843 Description Node C 1937 1943 ID No.
8 Index 8 INDEX A F Abbreviations............................................7 Address of Mikom.....................................9 Alarmforwarding .....................................73 Alarms Fan Unit Replacement............................89 Feed-Forward Amplifier..........................80 Filters External .....................................................74 Management .............................................65 Setting of Severity Level ...........................
User’s Manual for Node C Network Elements Mounting Brackets ..............................................16, 18 Connection Option ....................................16 General......................................................13 Pole ...........................................................17 Wall ...........................................................14 O S SMS Alarmforwarding ............................73 Software Setup.................................
