Nokia Solutions and Networks WTFA-01 GSM 800 Transciever User Manual dn98621958x3x0xen
Nokia Solutions and Networks GSM 800 Transciever dn98621958x3x0xen
Contents
Warnings and cautions
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| Document ID | 303292 |
| Application ID | i6We2RE5/xcB5trwspeO6A== |
| Document Description | Warnings and cautions |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 18.56kB (232062 bits) |
| Date Submitted | 2003-02-17 00:00:00 |
| Date Available | 2003-02-14 00:00:00 |
| Creation Date | 2002-10-09 19:25:25 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2002-10-09 19:20:37 |
| Document Title | dn98621958x3x0xen |
| Document Creator | FrameMaker 5.5.6. |
Nokia MetroSite EDGE Base Station Warnings and Cautions DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 1 (30) Warnings and Cautions The information in this documentation is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia's customers only for the purposes of the agreement under which the documentation is submitted, and no part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia welcomes customer comments as part of the process of continuous development and improvement of the documentation. The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products cannot be considered binding but shall be defined in the agreement made between Nokia and the customer. However, Nokia has made all reasonable efforts to ensure that the instructions contained in the documentation are adequate and free of material errors and omissions. Nokia will, if necessary, explain issues which may not be covered by the documentation. Nokia's liability for any errors in the documentation is limited to the documentary correction of errors. NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENTATION OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARY LOSSES), that might arise from the use of this documentation or the information in it. This documentation and the product it describes are considered protected by copyright according to the applicable laws. NOKIA logo is a registered trademark of Nokia Corporation. Other product names mentioned in this documentation may be trademarks of their respective companies, and they are mentioned for identification purposes only. Copyright © Nokia Corporation 2002. All rights reserved. 2 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en 0523 FCC Hereby, Nokia Corporation, declares that this product is in compliance with the essential requirements and other relevant provisions of Directive: 1999/5/EC. The product is marked with the CE marking and Notified Body number according to the Directive 1999/5/EC FCC §15.21 - Information to user - This product is used as an intentional radiated equipment and any changes or modifications on the equipment without any approval by Nokia could void the user's authority to operate the equipment. FCC §15.105 - Information to user - This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: DN98621958 Issue 3-0 en • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 3 (30) Warnings and Cautions 4 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Contents Contents 5 List of tables 6 List of figures 7 1.1 About this document 11 Safety guidelines 11 2.1 2.2 2.3 2.4 2.5 2.5.1 2.6 2.6.1 2.6.2 2.6.3 Warnings 13 Personnel 13 Dangerous voltage 13 Weight 16 High temperatures 16 Toxic hazards 17 Beryllium oxide 17 Electromagnetic fields and RF power 18 General guidelines 18 Formula for minimum safety distances 19 Safety distance calculation examples 19 3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.2 3.2.1 3.2.2 Cautions 23 Handling the BTS 23 Storage and transportation 23 Weight 23 Heat management 24 Grounding 24 Electro-static discharge protection 24 BTS power supply 26 AC and DC connectors 26 Grounding of AC power supply units 27 Index 29 DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 5 (30) Warnings and Cautions List of tables 6 (30) Table 1. Description for distance calculations in controlled and uncontrolled environments 20 Table 2. Safety distance calculation example © Nokia Corporation Nokia Proprietary and Confidential 20 Internal Copy DN98621958 Issue 3-0 en List of figures Figure 1. Dangerous voltage symbol 14 Figure 2. Stand-by symbol on the power supply unit 15 Figure 3. Hot surface symbol 17 Figure 4. Beryllium Oxide label 17 Figure 5. Hot surface label 24 Figure 6. Electro-static sensitive device label 25 Figure 7. Using the antistatic wrist strap 26 DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 7 (30) Warnings and Cautions 8 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Summary of Changes Version 1, 12th November 1999. Version 2, 2nd June 2000: • added GSM references to the title and body text • added EC marking • changed maximum power in Table 2 to 5W Version 3, 30th June 2001: • DN98621958 Issue 3-0 en updated for EDGE © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 9 (30) Warnings and Cautions 10 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en About this document About this document This document details the safety precautions to be followed when working with the Nokia MetroSite EDGE Base Station. The instructions in Nokia MetroSite EDGE Base Station: Installation and Nokia MetroSite EDGE Base Station: Maintenance must be followed when installing the Nokia MetroSite EDGE Base Station and performing any maintenance on it. Failure to follow these instructions may be dangerous to the installation and maintenance personnel. 1.1 Safety guidelines The safety guidelines are designed as follows: • Warnings alert the reader to dangers which may cause loss of life, physical injury or ill health. The symbol denoting a warning is presented below. WARNING This is a warning! • Cautions are used to denote possible damage to equipment but not dangers to personnel. The symbol denoting a caution is presented below. Caution This is a caution! DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 11 (30) Warnings and Cautions 12 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Warnings 2.1 Warnings Personnel Installation, commissioning and maintenance measures for any Nokia Base Station (BTS) may be performed only by trained and authorized personnel. The Nokia MetroSite EDGE Base Station must be installed so that only authorized personnel have access to its sensitive parts. WARNING Always prevent unauthorized personnel from accessing the Nokia MetroSite EDGE Base Station. 2.2 Dangerous voltage Potentially lethal voltages are present within this system. For more information on grounding and on the power supply, refer to Nokia MetroSite EDGE Base Station: Requirements for Installation and Operation. The symbol shown in Figure 1 denotes dangerous voltage. The Nokia MetroSite EDGE Base Station is labelled with this symbol. DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 13 (30) Warnings and Cautions Figure 1. Dangerous voltage symbol WARNING Make sure that applicable high voltage safety precautions are taken before attempting to work on the system with the power connected! WARNING Potentially lethal voltages can be induced if the equipment is not grounded correctly. Ensure that all ground connections are secure and nonremovable! WARNING An electrical plug with a ground connection is not sufficient as it can be pulled off. There is a possibility of surge voltage through the transmission lines in the case of lightning. WARNING Connect the Nokia MetroSite BTS to the main grounding busbar of the site! Electrical currents from power and communication cables is dangerous. 14 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Warnings WARNING Ensure that the ground connection is established before an AC or DC power outlet is connected to the BTS! Ensure that the ground connection is removed only after the AC or DC power outlet is disconnected! WARNING The power switch of the Nokia MetroSite EDGE Base Station does not disconnect it from the power network (AC/DC). The power switch of the Nokia MetroSite EDGE Base Station power supply unit has two positions: ON and stand-by. A separate main switch on the site is considered to be the disconnect device for safety and service purposes. The symbol shown in Figure 2 is used to denote the stand-by position of the power supply unit power switch. Figure 2. Stand-by symbol on the power supply unit WARNING Do not rely on the power switch alone to isolate a supply. When switching OFF the Nokia MetroSite EDGE Base Station, make sure that the power supply is completely isolated by setting the power switch to OFF (including the site mains power switch), disconnecting all relevant connectors, and removing all relevant fuses! DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 15 (30) Warnings and Cautions WARNING The site mains power switch must be turned OFF before connecting the mains power cable to the Nokia MetroSite EDGE Base Station! WARNING Do not disconnect the antenna connectors when the Nokia MetroSite EDGE Base Station is powered ON! When using an external synchronisation source, make sure that the ground for the Nokia MetroSite EDGE Base Station and for the device supplying the synchronisation signal are at the same ground potential. If this is not the case, make sure that the synchronisation cable shield is capacitively grounded at the supply end. 2.3 Weight WARNING The Nokia MetroSite EDGE Base Station weighs 28 to 40 kg (62 to 88 lb) depending on the number of TRXs. Lifting of the fully equipped BTS requires at least two people. 2.4 High temperatures The symbol shown in Figure 3denotes a hot surface. Equipment whose surface reaches high temperatures is labelled with this symbol. 16 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Warnings Figure 3. Hot surface symbol WARNING During operation, the interior of the Nokia MetroSite EDGE Base Station reaches a temperature of 60° to 70°C (140° to 158°F). 2.5 Toxic hazards 2.5.1 Beryllium oxide The Nokia MetroSite EDGE Base Station uses beryllium oxide (BeO), which can be harmful to human health. Beryllium oxide is used in: • Power amplifiers • RF transistors (isolator internal load) The equipment containing BeO carries a Beryllium Oxide label, as shown in Figure 4. BERYLLIUM OXIDE (TOXIC) IS USED IN SOME COMPONENTS. REFER TO MANUAL. Figure 4. DN98621958 Issue 3-0 en Beryllium Oxide label © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 17 (30) Warnings and Cautions WARNING Personnel who handle, use or dispose of components containing BeO should be aware of its nature and of the necessary safety precautions. Beryllium oxide is released into the air if the components containing it are damaged. WARNING The sub assemblies or components in units containing BeO must not under any circumstances be subjected to mechanical strain that might damage the components and thereby release beryllium oxide into the air. WARNING The components containing BeO must never be thrown out with general or domestic waste. Dispose of the equipment in the manner appropriate to chemical or special waste, and according to the local regulations! 2.6 Electromagnetic fields and RF power The Nokia MetroSite EDGE Base Station generates electromagnetic radiation. This can exceed safety levels very close to the antennas. Personnel must observe the general guidelines presented in Section 2.6.1, and apply the minimum distance calculation formula presented in Section 2.6.2. 2.6.1 General guidelines WARNING This equipment generates electromagnetic radiation which can exceed safety levels when a person is working in very close proximity to the antennas. Observe the minimum distance precautions shown in Table 1 when working in close proximity to antennas operating at full power! 18 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Warnings WARNING Do not install the Nokia MetroSite EDGE Base Station or its antennas in areas where there is a potential risk for interference with inadequately shielded medical equipment, such as life supporting devices, hearing aids or other electrically or magnetically sensitive devices! WARNING When installing the Nokia MetroSite EDGE Base Station or its antennas, the emission of other antennas nearby must be known beforehand so that ambient emissions can be managed properly. 2.6.2 Formula for minimum safety distances This section presents the formula for calculating the minimum safety distances using the specifications of the particular antenna. min ( G-L ) N 10 10 P 4 S Equation 1. Formula for calculating minimum safety distance (rmin) Equation 1 refers to the following factors: 2.6.3 • G is the antenna gain (in dB) compared to isotropically radiating antenna • P is the power delivered to the antenna (W) • L is the total loss (in dB) between the transmitter and the antenna input • N is the number of transmitters combined to the antenna • S is the maximum allowed power density in air (W/m2) Safety distance calculation examples Table 1 describes how the minimum distances for controlled and uncontrolled environments have been calculated. DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 19 (30) Warnings and Cautions Table 1. Description for distance calculations in controlled and uncontrolled environments Limit Description Minimum Distance in Controlled Environments* The minimum distances are calculated using the reference levels for power density as presented in the CENELEC prestandard; f/40 W/m2, in the frequency range 400 to 2000 MHz, averaged over any 6 min. time interval. This is in agreement with other guidelines (IEEE/ANSI, IRPA, NCRP, FCC) or stricter. Minimum Distance in Uncontrolled Environments* The minimum distances are calculated using the reference levels for power density as presented in the CENELEC prestandard; f/200 W/m2, in the frequency range 400 to 2000 MHz, averaged over any 6 min. time interval. This is in agreement with other guidelines (IEEE/ANSI, IRPA, NCRP, FCC) or stricter. * Controlled environments refer to locations where there is exposure to persons aware of the potential exposure. Uncontrolled environments refer to locations where there is exposure to persons not aware of the potential exposure and who have no control over it. Using the formula for minimum safety distances and the appropriate information for each factor, safety distances can be calculated as in the following calculations (Table 2) for a particular environment. Table 2. Safety distance calculation example Factor Unit GSM/E DGE 900 GSM/E DGE 1800 GSM/ED GE 1900 Frequency f [MHz] 900 1800 1900 Maximum TX power Pout [W] Minimum losses: cable L [dB] Maximum antenna gain (dependent on user choices) G [dB] 10 10 10 * CENELEC prestandard ENV50166-2 20 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Warnings Table 2. Safety distance calculation example (Continued) Factor Unit GSM/E DGE 900 GSM/E DGE 1800 GSM/ED GE 1900 Maximum number of TRXs/antenna (dependent on user choices) Power Density / Controlled environment* S [W/m2] 22.50 45 47.5 Power Density / Uncontrolled environment* S [W/m2] 4.5 9.5 Safety distance / Controlled environment rmin [m] 0.3 m 0.2 m 0.2 m (0.66 ft) Safety distance / Uncontrolled environment rmin [m] 0.6 m 0.4 m 0.4 m (1.32 ft) * CENELEC prestandard ENV50166-2 DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 21 (30) Warnings and Cautions 22 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Cautions Cautions 3.1 Handling the BTS 3.1.1 Storage and transportation Caution During storage and transportation, the Nokia MetroSite EDGE Base Station must remain in its original package in order to: • avoid mechanical damage • maintain traceability • protect the units against static electricity Caution Handle the Nokia MetroSite EDGE Base Station with care. Do not drop the base station or the package containing it. 3.1.2 Weight Caution Persons in charge of the transportation and installation of the Nokia MetroSite EDGE Base Station must note that a fully equipped Nokia MetroSite base station weighs 28 to 40 kg (62 to 88 lb). DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 23 (30) Warnings and Cautions 3.1.3 Heat management Caution During operation, the interior of the Nokia MetroSite EDGE Base Station may reach high temperatures (60° to 70°C). The power supply unit of the Nokia MetroSite EDGE Base Station carries a hot surface label, as shown in Figure 5. Figure 5. 3.1.4 Hot surface label Grounding The Nokia MetroSite EDGE Base Station may receive damaging over voltages through the antenna equipment, communication cables or power supply lines. Caution Sufficient protective grounding is required. An electrical power plug with ground connection is not sufficient: the grounding of the Nokia MetroSite EDGE Base Station must be based on a fixed grounding cable. 3.1.5 Electro-static discharge protection Caution Always wear a close-fitting antistatic wrist strap around your uncovered wrist when handling the Nokia MetroSite EDGE Base Station! 24 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Cautions The Nokia MetroSite EDGE Base Station contains electro-static sensitive devices, which means that they may be permanently damaged by electro-static discharges encountered in routine handling, testing and transportation. The Nokia MetroSite EDGE Base Station is labelled with an electro-static sensitive device symbol as shown in Figure 6. Figure 6. Electro-static sensitive device label Electro-static discharges are caused by direct contact or by an electro-static field. If a charged body approaches an electrically conducting surface, the acquired potential is discharged. An equalizing current can then flow in the associated circuitry and generate permanently damaging voltages by induction. The human body should be grounded at the same potential as the component or equipment being handled. A wrist strap creates an equipotential electrical connection between the object and the human. The Nokia MetroSite EDGE Base Station has a grounding point (ESD stud) to which a wrist strap must be connected. The wrist strap should be used and connected to the ESD stud as shown in Figure 7. DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 25 (30) Warnings and Cautions Wrist strap to ESD stud ESD stud Figure 7. Using the antistatic wrist strap 3.2 BTS power supply 3.2.1 AC and DC connectors Caution Ensure the correct polarity. Incorrect polarity causes damage to the equipment. Caution The Nokia MetroSite BTS power switch does not disconnect the base station from the power network (AC or DC). The separate main switch on the site is considered to be the power disconnect device for safety and service purposes. 26 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Cautions Caution Do not connect AC or DC power until you have verified that the line voltage is correct! 3.2.2 Grounding of AC power supply units Caution Ensure that the Nokia MetroSite EDGE Base Station is connected to a grounded power outlet! DN98621958 Issue 3-0 en © Nokia Corporation Nokia Proprietary and Confidential Internal Copy 27 (30) Warnings and Cautions 28 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en Index beryllium oxide 17 dangerous voltage 13 electromagnetic radiation 18 electro-static discharge (ESD) protection 24 grounding 24 heat control 24 power switch 15 safety distance calculation safety distances 19 stand-by mode 15 storage 23 19 toxic hazards transportation DN98621958 Issue 3-0 en 17 23 ©Nokia Corporation Nokia Proprietary and Confidential Internal Copy 29 (30) Warnings and Cautions 30 (30) © Nokia Corporation Nokia Proprietary and Confidential Internal Copy DN98621958 Issue 3-0 en
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