ADC Telecommunications DNYPCS1A Digivance® Street Coverage FleXibility "SCX" - PCS User Manual 75187

ADC Telecommunications Inc Digivance® Street Coverage FleXibility "SCX" - PCS 75187

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User manual 2

ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-18© 2005, ADC Telecommunications, Inc.Figure 2-9. NOC/NEM Interface Typical CommandsThe SNMP interface is used for remote control and monitoring operations (except softwaredownload and site number assignment). The SNMP interface uses a ManagementInformation Base (MIB) to define a list of identifiers that are supported by the SNMP agent.The SNMP manager communicates with the SNMP agent over a LAN. Directives, based on theMIB identifier, are issued by the SNMP manager to the SNMP agent along with instructions toeither get the specified identifier or set the specified identifier. The directive is then executed onthe Digivance system by the SNMP agent. The SNMP agent also has the ability to sendautonomous messages (called traps) to the SNMP manager to report changes in the status of themanaged system. The SNMP manager Stargazer Version 8.0 is available from ADC for use withthe LRCS SNMP agent. Other SNMP managers are available from various networkmanagement software venders. Refer to the SNMP Agent Software User Manual (see RelatedPublications section) for additional information. 6 SPECIFICATIONSRefer to the following tables for the system, host unit, and remote unit specifications. Allspecifications apply after a five minute warm-up period. Table 2-5 – SCS 800/900 MHz SMR system nominal specificationsTable 2-6 – SCS 800 MHz system nominal specificationsTable 2-7 – SCS 1900 MHz system nominal specificationsTable 2-8 – Host Unit nominal specificationsTable 2-9 – WDM nominal specificationsTable 2-10 – Remote Unit nominal specifications
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-19© 2005, ADC Telecommunications, Inc.Table 2-5. SCS 800/900 MHz SMR System Nominal SpecificationsPARAMETER SPECIFICATION REMARKSOptical - Host and Remote UnitFiber type 9/125, single-modeNumber of fibers required 1 for single-band remote unit2 for dual-band RUAll SCS remote units include a WDM.Forward path wavelength 1550 nmReverse path wavelength 1310 nmOptical transmit power output Host Unit Remote Unit0 dBm +1.3 dBm (includes WDM inser-tion loss)Optical budget 25 dB For optical BER of 10–6Optical Receiver Input Maximum –15 dBmOptical connectors UPC/SC Host unitOptiTap APC/SC Remote unitRF Forward Path - 800/900 MHzSystem bandwidth 18 MHz5 MHz800 MHz transmit900 MHz transmitFrequency range 851–869 MHz935–940 MHzGain of forward path(Host input to Remote primary antenna port)77.5 dB At band center, room tempera-ture, and 0 dB attenuation set-ting. Includes power amplifier.Gain flatness Band flatness Channel flatness± 2.0 dB across freq. range± 1.5 dB variation across any 1.25 MHz channelGain variation ± 3 dB over temp and unit-to-unitPropagation delay < 6 µs (typical) Excludes fiber delayConfigurable propagation delay Range Step size0 to 63 µs0.1µs ± 100 nsPlus standard propagation delaySpurious In-band self generated Dynamic range (noise floor)<–13 dBm at remote output<–60 dBc at 30 KHz bandwidthTransmit peak-to-average >10 dBTwo-tone Intermodulation <–55 dBc two tones @ 5 Watts eachNominal composite RF input signal level–40 dBm at 0 dB attenuation–9 dBm at max. attenuation–20 dBm is the optimal RF input signal level. Configurable input level Range Step size31 dB1 ± 0.5 dB ±10% of attenuation monotonic
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-20© 2005, ADC Telecommunications, Inc.Note 1: Per Industry Canada Section 5.3 - The rated output power of this equipment is for singlecarrier operation. For situations where multiple carrier signals are present, the rating would haveto be reduced by 3.5 dB, especially where the output signal is re-radiated and can causeinterference to adjacent band users. This power reduction is to be by means of input power orgain reduction and not by an attenuator at the output of the device. Composite RF Output power of both bands (see Note 1at end of table)38.1 dBm (6.5 Watts) at remote antenna port with –40 dBm input10 Watts at LPA output Configurable RF Output Range Step size31 dB at remote unit1 ± 0.5 dB ± 10% of attenuation monotonicTransmit path insertion loss 2.5 dB maximumRF Reverse Path - 800/900 MHzSystem bandwidth 18 MHz5 MHz800 MHz receive900 MHz receiveFrequency range 806–824 MHz896–901 MHzPropagation delay < 8 µs (typical) Excludes fiber delayConfigurable propagation delay Range Step sizeUp to 63 µs0.1µs ±1 100 nsPlus standard propagation delayGain of reverse path Overall gain Gain variation30 ± 2 dB at band center at room temperature3 dB over temperatureGain flatness Band flatness Channel flatness± 2.0 dB across frequency range± 1.5 dB variation across any 1.25 MHz channelOut-of-band rejection –40 dB bandwidth at < 30 MHzSpurious (in-band self gener-ated)–110 dBm referred to inputIntermodulation –62 dBc two tones @ –50 dBmSystem noise figure 9 dB at mid-bandConfigurable RF output Range Step size31 dB1 ± 0.5 dB ± 10% of attenuation monotonicBlocking dynamic range 70 dBLevel limiting ALC threshold –40 dBm ± 3 dB instantaneousLevel limiting ALC range 27 dBTable 2-5. SCS 800/900 MHz SMR System Nominal Specifications, continuedPARAMETER SPECIFICATION REMARKS
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-21© 2005, ADC Telecommunications, Inc.Table 2-6. SCS 800 MHz System Nominal SpecificationsPARAMETER SPECIFICATION REMARKSOptical - Host and Remote UnitFiber type 9/125, single-modeNumber of fibers required 1 for single-band remote unit2 for dual-band RUAll SCS remote units include a WDM.Forward path wavelength 1550 nmReverse path wavelength 1310 nmOptical transmit power output Host Unit Remote Unit0 dBm +1.3 dBm (includes WDM inser-tion loss)Optical budget 25 dB For optical BER of 10–6Optical Receive Input Maximum –15 dBmOptical connectors UPC/SC Host unitOptiTap APC/SC Remote unitRF Forward Path - 800 MHzSystem bandwidth A band B band11 and 1.5 MHz10 and 2.5 MHzFrequency range A band B band869–880 and 890–891.5 MHz880–890 and 891.5–894 MHzOut-of-band emissions Primary –13 dBm per 1 MHz bandwidth from 10 kHz to 20 GHzGain of forward path(Host input to Remote primary antenna port)78.1 dB At band center, room tempera-ture, and 0 dB attenuation set-ting. Includes power amplifier.Gain flatness Band flatness Channel flatness± 2.0 dB across freq. range± 1 dB variation across any 1.25 MHz channelGain variation ± 3 dB over temp and unit-to-unitOut-of-band rejection –40 dB at > ±17.5 MHz from center of subbandPropagation delay < 6 µs (typical) Excludes fiber delayConfigurable propagation delay Range Step sizeUp to 63 µs0.1µs ± 100 nsPlus standard propagation delaySpurious In-band self generated Free dynamic range<–13 dBm at remote output<–60 dBc at 30 kHz bandwidthTransmit peak-to-average >10 dB
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-22© 2005, ADC Telecommunications, Inc.Two-tone Intermodulation <–55 dBc at remote output Two tones @ 5 Watts eachCDMA Intermodulation 885 kHz to 1.25 MHz 1.25 to 1.98 MHz 1.98 to 2.25 MHz–45 dBc per 30 kHz–8 dBm per 30 kHz –55 dBc per 30 kHzAbsolute levelNominal composite RF input signal level–40 dBm at 0 dB attenuation–9 dBm at max. attenuationAn input signal level of –40 dBm provides maximum output power Configurable input level Range Step size31 dB1 ± 0.5 dB ±10% of attenuation monotonicComposite RF Output power(see Note 1at end of table)38.1 dBm (6.5 Watts) at remote antenna port with –40 dBm input10 Watts at LPA outputConfigurable RF Output Range Step size31 dB at remote unit1 ±0.5 dB ±10% of attenuation monotonicTransmit path insertion loss 2.5 dB maximumRF Reverse Path - 800 MHzSystem bandwidth A band B band11 and 1.5 MHz10 and 2.5 MHzFrequency range A band B band824–835 and 845–846.5 MHz835–845 and 846.5–849 MHzPropagation delay 6 µs Excludes fiber delayConfigurable propagation delay Range Step sizeUp to 63 µs0.1µs ±1 100 nsPlus standard propagation delayGain flatness Band flatness Channel flatness1.5 dB across frequency range±1 dB variation across any 1.25 MHz channelGain of reverse path Overall gain Gain variation30 ± 2 dB at band center at room temperature3 dB over temperatureALC not invokedALC not invokedOut-of-band rejection –40 dB at > ±17.5 MHz from center of subbandALC not invokedSpurious (in-band self gener-ated)–110 dBm referred to input ALC not invokedIntermodulation –62 dBc two tones at –50 dBmSystem noise figure 8 dB at mid-band ALC not invokedTable 2-6. SCS 800 MHz System Nominal Specifications, continuedPARAMETER SPECIFICATION REMARKS
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-23© 2005, ADC Telecommunications, Inc.Note 1: Per Industry Canada Section 5.3 - The rated output power of this equipment is for singlecarrier operation. For situations where multiple carrier signals are present, the rating would haveto be reduced by 3.5 dB, especially where the output signal is re-radiated and can causeinterference to adjacent band users. This power reduction is to be by means of input power orgain reduction and not by an attenuator at the output of the device. Configurable RF output Range Step size31 dB1 ± 0.5 dB ± 10% of attenuation monotonicBlocking dynamic range 70 dBLevel limiting ALC threshold –40 dBm ± 3 dB instantaneousLevel limiting ALC range 30 dBRF Forward and Reverse Path Modulation AccuracyService/Mod Type/Parameter TDMA/n/4-DQSK/rms EVM GSM/GMSK/rms phase error EDGE/8PSK/rms EVM EIA-97D/CDMA/rho factor7%4º7%.97%Table 2-6. SCS 800 MHz System Nominal Specifications, continuedPARAMETER SPECIFICATION REMARKS
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-24© 2005, ADC Telecommunications, Inc.Table 2-7. SCS 1900 MHz System Nominal SpecificationsPARAMETER SPECIFICATION REMARKSOptical - Host and Remote UnitFiber type 9/125, single-modeNumber of fibers required 2Forward path wavelength 1550 nmReverse path wavelength 1310 nmDiversity path wavelength 1310 nmOptical transmit power output Host Unit Remote Unit0 dBm +2 dBmOptical budget 25 dB For optical BER of 10–6Optical Receive Input –15 dBmOptical connectors Host Unit Remote UnitIndustry standard SCIndustry standard SCRF Forward Path - 1900 MHzSystem Bandwidth 20 MHz AD band, 25 MHzDBE, BEF, and EFC bands, 5 MHz G band.Frequency range AD DBE BEF EFC G1930 to 1950 MHz1945 to 1970 MHz1950 to 1975 MHz1965 to 1990 MHz1990 to 1995 MHzOut-of-band emissions(Primary)–13 dBm per 1 MHz bandwidth from 10 kHz to 20 GHzGain of forward path(Host input to Remote primary antenna port)78.3 dB At band center, room tempera-ture, and 0 dB attenuation set-ting. Includes power amplifier.Gain flatness Band flatness Channel flatness± 1.5 dB across freq. range± 1 dB variation across any 1.25 MHz channelGain variation ± 3 dB over temp and unit-to-unitOut-of-band rejection –40 dB at > ±17.5 MHz from center of subbandPropagation delay < 2.5 µs Excludes fiber delayConfigurable propagation delay Range Step sizeUp to 63 µs0.1µs ± 100 nsPlus standard propagation delay
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-25© 2005, ADC Telecommunications, Inc.Spurious In-band self generated Free dynamic range–13 dBm at remote output60 dB at 30 kHz bandwidthTransmit peak-to-average 10 dBTwo-tone Intermodulation –55 dBc at remote output two tones at 5 Watts eachCDMA Intermodulation 885 kHz to 1.25 MHz 1.25 to 1.98 MHz 1.98 to 2.25 MHz–45 dBc per 30 kHz–8 dBm per 30 kHz –55 dBc per 30 kHzAbsolute levelNominal composite RF input signal level–40 dBm at 0 dB attenuation–9 dBm at max. attenuationAn input signal level of –40 dBm provides maximum output power Configurable input level Range Step size31 dB1 ± 0.5 dB ±10% of attenuation monotonicComposite RF Output power (see Note 1 at end of table)38.3 dBm (6.7 Watts) at remote antenna port with –40 dBm inputConfigurable RF Output Range Step size31 dB at remote unit1 ±0.5 dB ±10% of attenuation monotonicTransmit path insertion loss 2.4 dB maximumRF Reverse Path - 1900 MHzSystem Bandwidth 20 MHz AD band, 25 MHz DBE, BEF, and EFC bands. 5 MHz G band.Frequency range AD DBE BEF EFC G1850 to 1870 MHz1865 to 1890 MHz1870 to 1895 MHz1885 to 1910 MHz1910 to 1915 MHzPropagation delay 2.5 µs Maximum Excludes fiber delayConfigurable propagation delay Range Step size0 to 63 µs0.1µs ±1 100 nsPlus standard propagation delayGain flatness Band flatness Channel flatness1.5 dB across frequency range±1 dB variation across any 1.25 MHz channelGain of reverse path Overall gain Gain variation30 ± 2 dB at band center at room temperature3 dB over temperatureALC not invokedALC not invokedOut-of-band rejection –40 dB at > ±17.5 MHz from center of subbandALC not invokedTable 2-7. SCS 1900 MHz System Nominal Specifications, continuedPARAMETER SPECIFICATION REMARKS
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-26© 2005, ADC Telecommunications, Inc.Note 1: Per Industry Canada Section 5.3 - The rated output power of this equipment is for singlecarrier operation. For situations where multiple carrier signals are present, the rating would haveto be reduced by 3.5 dB, especially where the output signal is re-radiated and can causeinterference to adjacent band users. This power reduction is to be by means of input power orgain reduction and not by an attenuator at the output of the device. Spurious (in-band self gener-ated)–110 dBm referred to input ALC not invokedIntermodulation –62 dBc two tones at –50 dBmSystem noise figure 8 dB at mid-band ALC not invokedConfigurable RF output Range Step size31 dB1 ± 0.5 dB ± 10% of attenuation monotonicBlocking dynamic range 70 dBLevel limiting ALC threshold –40 dBm ± 3 dB instantaneousLevel limiting ALC range 30 dBRF Forward and Reverse Path Modulation AccuracyService–Mod Type–Parameter TDMA–π/4-DQSK–rms EVM GSM–GMSK–rms phase error EDGE–8PSK–rms EVM EIA-97D–CDMA–rho factor7%4º7%0.97%Table 2-7. SCS 1900 MHz System Nominal Specifications, continuedPARAMETER SPECIFICATION REMARKSBlank
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-27© 2005, ADC Telecommunications, Inc.Table 2-8. Host Unit Nominal SpecificationsPARAMETER SPECIFICATION REMARKSPhysical/Environmental/Electrical - Host UnitDimensions (H×W×D) Rear Access Front Access3.5 × 17.1 × 12.2 inches(88 × 433 × 311 mm)3.5 × 17.2 × 15.3 inches(88 × 437 × 389 mm)Dimension for width does not include the mounting brackets which can be installed for either 19- or 23-inch racks. Mounting 19- or 23-inch rack EIA or WECOWeight 18 lbs. (8.2 kg)Weather resistance Indoor installation onlyOperating temperature 0º to 50º C (32º to 122º F)Storage temperature –40º to 70º C (–40º to 158ºF)Humidity 10% to 90% No condensationOptical ports UPC/SCExternal alarm connector Screw-type terminals NO and NC relay contactsDC power connector Screw-type terminal stripRF coaxial cable connectors 50 ohm N-type (female) 50 ohms input/output impedanceService connector DB-9 (female) RS-232 DTE interfaceAuxiliary connector DB-9 (female) Not used with SCS systemsCAN connectors RJ-45 jackVoltage input Nominal ± 24 or ± 48 VDC ± 21 to ± 60 VDCPower consumption 55 wattsCurrent rating 1 Amp at –48 VDCReliability at 25ºC MTBF 80,000 hours Excluding fansTable 2-9. Host Unit and Remote Unit WDM Nominal SpecificationsPARAMETER SPECIFICATION REMARKSOptical - WDMPassband 1310 nm ± 20 nm1550 nm ± 20 nmForward path insertion loss Host WDM Remote WDM0.7 dB0.3 dBDoes not include connector lossReverse path insertion loss Host WDM Remote WDM0.3 dB0.7 dBDoes not include connector lossIsolation > 30 dB minimumReturn loss (Reflectance) < –50 dB All input ports
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTIONPage 2-28© 2005, ADC Telecommunications, Inc.Table 2-10. Remote Unit Nominal SpecificationsPARAMETER SPECIFICATION REMARKSPhysical/Environmental/Electrical - Remote UnitDimensions (L×W×D) Single-Band Dual-Band and Interim Single Band29.4 × 9.7 × 5.7 inches(747 × 246 × 145 mm)37.3 × 10.2 × 7.5 inches(947 × 259 × 191 mm)Mounting Pole, wall, or strand mounted Requires accessory kit for strand mountingWeight Single-Band Dual-Band and Interim Single Band42 lbs. (19.1 kg)79.5 lbs. (36.1 kg)With solar shields installedWeather resistance NEMA-6, IEC IP 67 Indoor or outdoor installationLightning protection 20 kA IEC 1000-4-5 8/20 µs waveformWith external protector (acces-sory)Operating temperature –30º to 50º C (–22º to 122º F)Storage temperature –40º to 70º C (–40º to 158ºF)Humidity 10% to 90% No condensationAC power connector Mini 3-pin 3-wire power cable includedAntenna connector(s) 50 ohm N-type (female) 50 ohms input/output impedanceOptical port(s) OptiTap APC/SC Requires angled-polish SC con-nectorsVoltage input 90 to 265 VAC, 47 to 63 Hz60 to 89 VAC, 47 to 63 HzStandardOptionPower consumption Single-Band (all types) Dual-Band300 Watts600 WattsCurrent rating Single-Band (all types) Dual-Band2.5 Amps at 120 VAC5.0 Amps at 120 VACReliability at 25ºC MTBF - 80,000 hours
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-1© 2005, ADC Telecommunications, Inc.SECTION 3: OPERATION 1 BEFORE STARTING OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11.2 Readiness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22 TURN-UP SYSTEM AND VERIFY OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22.1 Reference Procedure: Determine Forward Path Input Signal Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-62.2 Reference Procedure: Enter Site Name and Site Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-92.3 Reference Procedure: Enter Host Forward Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-112.4 Reference Procedure: Determine Output Signal Level at RU Antenna Port . . . . . . . . . . . . . . . . . . . . . . . . . 3-122.5 Reference Procedure: Enter Remote Forward Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-132.6 Reference Procedure: Enter Host Reverse Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-152.7 Reference Procedure: Enter Host Forward and Reverse Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16_________________________________________________________________________________________________________1 BEFORE STARTING OPERATIONThis section provides guidelines for turning-up the Digivance system, verifying that all units areoperating properly, testing to ensure that all performance requirements are satisfied, andcorrecting any installation problems. This process assumes that the various units have beeninstalled in accordance with the system design plan. 1.1 Tools and MaterialsThe following tools and materials are required in order to complete the procedures in thissection: • Portable spectrum analyzer or RF power meter• DC voltmeter• External RF and optical attenuators (if specified in system design plan)• PC-type computer with Digivance Element Management System (EMS) Version 3.01software installed• Straight-through RS-232 DB-9 interface cable (accessory)•Handset•Pencil or pen• Writing padContent Page
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-2© 2005, ADC Telecommunications, Inc.1.2 Readiness CheckBefore starting the turn-up process, inspect the complete Digivance system to verify that allcomponents of the system are ready to be powered-up. This will ensure that no units of thesystem will be damaged during turn-up and that all existing systems will continue to functionproperly. 1.2.1 Host Unit Installation ChecksComplete the following checks at the HU prior to starting the turn-up process: 1. Verify that the ON/OFF switch on the HU is in the OFF position (press O). 2. At the fuse panel, install a 3 Amp GMT fuse in the circuit that supplies DC power to the HU. 3. Using a DC voltmeter, verify that the DC voltage level at the HU power terminals isbetween ± 21 to ± 60 VDC (nominal ± 24 or ± 48 VDC). The DC power provided to theHU can be either polarity. 4. Verify that all electrical and optical connections have been completed and that all opticalfibers, coaxial cables, and wires are properly routed and secured. 1.2.2 Remote Unit Installation ChecksComplete the following checks at the RU prior to starting the turn-up process: 1. Verify that all electrical and optical connections have been completed and that all opticalfibers, coaxial cables, and wires are properly routed and secured. 2. At the AC breaker box, make sure the circuit breaker for the circuit that supplies AC powerto the RU is in the open (off) position. 2 TURN-UP SYSTEM AND VERIFY OPERATIONThe process of turning-up the system and verifying operation involves powering up the varioussystem components, verifying that the LED indicators show normal operation, setting the sitenumber and name, adjusting the RF signal levels, and adjusting the path delay. Note: When connecting the equipment to the supply circuit, be sure to check equipmentnameplate ratings to avoid overloading circuits which may cause damage to over-currentprotection devices and supply wiring. Note: SCS systems that include a dual-band RU are comprised of two systems that operateand function independently of each other. Each system can be independently turned-up,tested, and placed into service. The EMS will recognize each system regardless of thefrequency/band and will display the appropriate screens. The frequency/band can beverified by clicking on the HOST Host tab and on the REMOTE STM tab. The frequency/band for the selected system will be displayed on the right side of the screen.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-3© 2005, ADC Telecommunications, Inc.Each Digivance system must be turned-up separately before being networked together withmultiple systems through the CAN interface. Use the following procedure to turn-up eachDigivance system: 1. Temporarily disconnect the external alarm system or notify the alarm system provider thattesting is in progress. 2. If the HU is networked together with multiple HU’s, temporarily disconnect the CAN cablesfrom the NET IN and NET OUT ports of the HU. 3. Determine if the forward path composite input signal level at the host unit RF IN port(s) isappropriate to produce the required RF output signal level. Note that 800/900 MHz SMRhost units have two forward path RF ports. Adjust by installing an external attenuator ifnecessary. For adjustment purposes, the optimum input signal level is –20 dBm for 800/900 MHz SMR systems. Refer to Section 2.1 for the calculation and adjustment procedure.4. At the HU: Place the ON/OFF switch on the HU in the ON position (press I). 5. At the RU: Place the AC circuit breaker switch in the closed (ON) position. 6. Wait 6 to 10 seconds for the HU and the RU to initialize and then observe the LEDindicators on the HU and RU. Refer to Section 4: Maintenance for the troubleshootingprocedures if the indicators do not respond as specified in Table 3-1. Table 3-1. LED Indicator Operation at Initial Turn-Up7. Measure the input optical power level at the HU and RU and verify that the optical powerlevel received at the HU and RU is within –15 to –25 dBm. Refer to Section 4:Maintenance for the optical power test procedure. 8. Connect the EMS computer (if not already connected) to the SERVICE connector on theHU front panel. If necessary, a separate laptop computer loaded with the EMS softwarecan be temporarily connected and used to initially configure the system. Note: By default, all HU’s and RU’s are programmed with the same site number andname. This can cause problems for the EMS if multiple HU’s with the same site numberand site name are networked together through the CAN interface. It is therefore necessaryto temporarily disconnect the CAN interface cables from the HU when it is beingconfigured for operation until a unique site number and name can be assigned. REAR ACCESS HOST UNIT FRONT ACCESS HOST UNIT REMOTE UNITPOWER – Green POWER – Green STATUS – OffNote: This LED will stay red for 6 to 10 seconds while the RU initializes and then turn off.STANDBY – Off STANDBY – OffHOST UNIT – Green HOST UNIT – GreenREMOTE UNIT – Green REMOTE UNIT – GreenDRIVE 851–869 – Green, Yellow, or RedDRIVE 935–940 – Green, Yellow, or RedDRIVE – Green, Yellow, or RedFWD/REV (PORT 1/PORT 2) – Green FWD/REV (PORT 1/PORT 2) – Green
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-4© 2005, ADC Telecommunications, Inc.9. Start up the EMS software program. The EMS main window will open as shown inFigure 3-1. The EMS software should be installed on a PC-type computer and the PC’sCOMM port should be configured to interface with the HU. For information aboutinstalling the EMS software and configuring the PC’s COMM port, refer to the DigivanceElement Management System User Manual (see Related Publications section). Figure 3-1. Digivance Element Management System Main Window10. Open the View drop down menu and connect to the Host and Remote pair by selecting the“NotNamed/NotNamed” Host/Remote pair. The HOST Alarms display and the REMOTEAlarms display will open within the main window as shown in Figure 3-2. Figure 3-2. Typical Host and Remote Alarms DisplayClick to view dropdown menuClicking on the tabs inthis list will open the cor-responding display.Host/Remote pairsite name
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-5© 2005, ADC Telecommunications, Inc.11. New Control program software and FPGA program software will be provided separatelyon a “as needed” basis. If new Control and FPGA software is not provided with thesystem, proceed to step 12. If a Control and FPGA software upgrade is required, contactthe ADC Technical Assistance Center (see Section 5) for help with the downloadprocedure. 12. Click on the HOST Config tab and on the REMOTE Config tab (see Figure 3-2). TheHOST Config display and the REMOTE Config display will open within the main window. 13. Enter the Site Name and Site Number for both the HOST and the REMOTE unit. Refer toSection 2.2 for details. 14. If the Digivance system will be networked together with other Digivance systems,reconnect the CAN cables to the HU’s NET IN and NET OUT ports. 15. Verify that no Major or Minor alarms are being reported in either the HOST or REMOTEAlarm displays (except as indicated in the note below) and that all alarm fields are green. 16. Click on the HOST RF tab (see Figure 3-2). The HOST RF display will open within themain window. 17. Enter the Host Fwd Att (Forward Attenuation) value. This sets the forward input RFsignal level at the HU. Refer to Section 2.3 for details. By default, this value is set to 31dB. If the DRIVE LED on the HU front panel was red, it should turn green when this stepis completed. Note that 800/900 MHz SMR HU’s have two DRIVE LED’s. 18. Determine if the RF output power at the RU ANTENNA is at the correct level up to acomposite maximum of +38.1 dBm (6.5 Watts) for 800 MHz and 800/900 MHz SMRsystems or +38.3 dBm (6.7 Watts) for 1900 MHz systems. Refer to Section 2.4 for details. 19. Click on the REMOTE RF tab (see Figure 3-2). The REMOTE RF display will openwithin the main window. 20. Enter the Remote Fwd Att value. This adjusts the RF output signal level at the HUANTENNA port. By default this value is set to 31 dB. Refer to Section 2.5 for details. 21. Click on the HOST RF tab (see Figure 3-2). The HOST RF display will open within themain window. 22. Enter the Host Rev Att (Reverse Attenuation) values. This sets the reverse output RFsignal levels at the host unit RF OUT port(s). By default each value is set to 31 dB. Referto Section 2.6 for details. Note that 800/900 MHz SMR host units have two REVERSE RFOUT ports. 23. If a delay adjustment is required, enter the Host Fwd Delay and Host Rev Delay values.By default, the delay values are set to 0. Refer to Section 2.7 for details. Note: The Site Name and Site Number must be unique for each Digivance system. Note: The Host RF Underdrive may indicate a minor alarm until the Host Fwd Att andRemote Fwd Att values are set.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-6© 2005, ADC Telecommunications, Inc.24. If a separate laptop computer loaded with the EMS software was used to initiallyconfigure the system, disconnect the laptop computer from the SERVICE connector. 25. Reconnect the external alarm system or notify the alarm system provider that the turn-upprocess has been completed. 2.1 Reference Procedure: Determine Forward Path Input Signal LevelThe level of the composite RF input signals received at the host unit FORWARD RF IN port(s)will vary depending on the EBTS, the cable loss, the number of channels present, and therequired forward path composite power. If maximum composite RF output is required at theRU, the level of the composite RF input signal received at the HU must fall within a range of –9to –40 dBm. If the signal level is not within this range, it must be adjusted using an externalattenuator. Note: The 800/900 MHz SMR host unit has two FORWARD RF IN ports. Use the851–869 FORWARD RF IN port to complete this procedure. Then repeat this procedure for the935–940 FORWARD RF IN port. When connecting a single HU to a single EBTS, use the following procedure to measure andadjust the input RF signal level at the HU: 1. Connect a spectrum analyzer or power meter to the forward path output port at the EBTS.The required signal levels and test points for 800/900 MHz SMR systems are shown inFigure 3-3. The required signal levels and test points for 800 MHz and 1900 MHzsystems are shown in Figure 3-4. Note that 800/900 MHz SMR Host Units have twoforward path ports. 2. If using a spectrum analyzer, proceed to step 3. If using a power meter, measure thecomposite signal power from the EBTS and then proceed to step 5. 3. Measure the RF level of a single carrier, such as the control channel, in dBm. Make surethe resolution bandwidth of the spectrum analyzer is 30 kHz. Maximum power in anychannel should not exceed 5W (+37 dB). 4. Calculate the total composite signal power from the EBTS using the following formula: Ptot = Pc + 10Log N where,Ptot is the total composite power in dBmPc is the power per carrier in dBm as measured in step 3, andN is the total number of channels. Note: When two or more HU’s are connected together through the CAN interface, onlyone EMS computer is required to manage the networked Digivance systems. The EMScomputer may be connected to the SERVICE port on any one of the HUs in the network. Note: The optimum level for an 800/900 MHz SMR composite input signal is –20 dBmNote: Check the input rating of the test equipment and the output rating of the EBTS. Toavoid burning out the spectrum analyzer or power meter, it may be necessary to insert a30 dB 100W (or similar) attenuator between the EBTS and test equipment.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-7© 2005, ADC Telecommunications, Inc.Figure 3-3. Signal Levels, Test Points, and Adjustments for 800/900 MHz SMR SystemsFORWARD PATHINPUT SIGNAL LEVELAT HOST UNIT(-20 dBm OPTIMALCOMPOSITE FORFULL POWER)HOST UNITREMOTE UNIT ENHANCED BASE TRANSCEIVER STATION20577-AOPTICAL LINKANTENNAQUADRAPLEXER/FILTERFORWARD PATH SIGNALLEVEL AS SET BY HOSTFORWARD PATHATTENUATORS(ADJUST TO -40 dBmCOMPOSITEFOR FULL POWER)REVERSE PATH OUTPUTSIGNAL LEVEL AS SET BY HOSTREVERSE PATH ATTENUATORSMAXIMUM OUTPUT SIGNALLEVEL AT ANTENNA PORT(37 dBm AT FULL POWER)FORWARD PATH SIGNALLEVEL AS SET BY REMOTEFORWARD PATHATTENUATORSLPAEXTERNALATTENUATORS851-869TRANS-MITTER935-940TRANS-MITTER0 to 31 dBATTENUATORS(HOST FWD ATT)0 to 31 dBATTENUATORS(HOST REV ATT)0 to 31 dBATTENUATORS(REMOTE FWD ATT)RF, OPTICS,AND CONTROLRF, OPTICS,AND CONTROL896-901RECEIVER806-824RECEIVER
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-8© 2005, ADC Telecommunications, Inc.Figure 3-4. Signal Levels, Test Points, and Adjustments for 800 MHz and 1900 MHz SystemsFORWARD PATHINPUT SIGNAL LEVELAT HOST UNIT(-20 dBm TYPICALCOMPOSITE FORFULL POWER)HOST UNITPRIMARYANTENNALPAREMOTE UNITENHANSED BASE TRANSCEIVER STATION20653-AEXTERNALATTENUATORTRANS-MITTERRECEIVER0 to 31 dBATTENUATOR(HOST REV ATT)0 to 31 dBATTENUATOR(HOST FWD ATT)RF, OPTICS,AND CONTROL0 to 31 dBATTENUATOR(REMOTE FWD ATT)OPTICAL LINKRF, OPTICS,AND CONTROLDUPLEXERFORWARD PATH SIGNALLEVEL AS SET BY HOSTFORWARD PATH ATTENUATOR(ADJUST TO -40 dBmCOMPOSITE FORFULL POWER)REVERSE PATH OUTPUTSIGNAL LEVEL AS SET BY HOSTREVERSE PATH ATTENUATORMAXIMUM OUTPUT SIGNALLEVEL AT ANTENNA PORTAT FULL POWER38.1 dBm for 800 MHz38.3 dBm for 1900 MHz FORWARD PATH SIGNALLEVEL AS SET BY REMOTEFORWARD PATHATTENUATOR
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-9© 2005, ADC Telecommunications, Inc.5. Determine the total cable loss that is imposed by the forward path coaxial cable that linksthe EBTS to the HU and also any insertion loss imposed by splitters or combiners. 6. Subtract the total cable loss and any insertion losses from the total composite powercalculated in step 4. 7. Subtract –20 (optimum input signal level) from the value determined in step 6. Thedifference (which should be positive) equals the value of the external attenuator that isrequired to reduce the forward path signal level to the optimum level for input to the HU.The following formula outlines the required calculations for steps 6 and 7: Ptot – (Cable and insertion loss) – (–20) = Value of external attenuator required8. Select an attenuator that is as close to the value calculated in step 7 as possible. 9. Install the external attenuator in the coaxial cable that is connected to the correspondingFORWARD RF IN port at the HU. 10. If turning up an 800/900 MHz SMR system, repeat steps 1–9 for the 935–940 FORWARDRF IN port at the HU. Install the external attenuator in the coaxial cable that is connectedto the 935–940 FORWARD RF IN port at the HU. 11. Subtract the value of the external attenuator from the total composite signal power (Ptot)and record the result. This value will be required when setting the attenuation of the HU’sinternal forward path attenuators. 2.2 Reference Procedure: Enter Site Name and Site NumberAll HU’s and RU’s are programmed with the same site name and site number. It is thereforenecessary to assign a unique site name and site number to the HU and RU before they can beconnected to the same CAN network. Use the following procedure to assign a unique site nameand number to each HU and RU system:1. Click on the HOST Config tab and on the REMOTE Config tab. The HOST Configdisplay and the REMOTE Config display will open within the EMS main window asshown in Figure 3-5. 2. Click on the HOST Site Name Edit button (see Figure 3-5). The Site Name pop-upscreen will open as shown in Figure 3-6. Enter a unique name for the HOST. The namemay be up to 32 characters long and must not contain any spaces. The name may includenumbers, punctuation, and upper or lower case letters and must always begin with a letter.Click on OK to close the screen and make the changes take effect. Note: If the input signal level is already –20 dBm, no external attenuator is required. Caution: The Host Unit can be damaged if it is overdriven by the EBTS. Always install anexternal protective attenuator at the Host Unit FWD RF IN port if the forward path compositeinput signal level is greater than –9 dBm.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-10© 2005, ADC Telecommunications, Inc.Figure 3-5. HOST and REMOTE Config DisplaysFigure 3-6. HOST Site Name Pop-Up Screen3. Click on the HOST Site Number Edit button (see Figure 3-5). The Site Number pop-upscreen will open. Enter any number (must be unique) between 1 and 24 and then click onOK to close the screen and make the changes take effect. 4. Check the REMOTE Site Number field (see Figure 3-5). The REMOTE Site Numberdoes not have to be entered. When the HOST Site Number is entered, the system willautomatically enter the same number for the REMOTE Site Number. 5. Click on the REMOTE Site Name Edit button (see Figure 3-5). The Site Name pop-upscreen will open. Enter a unique name for the REMOTE. The name may be up to 32characters long and must not contain any spaces. The name may include numbers,punctuation, and upper or lower case letters and must always begin with a letter. Click onOK to close the screen and make the changes take effect. 6. Open the Tools menu at the top of the main window and then select Refresh Catalog tomake the new Host and Remote site names appear in the View menu. HOST Site NumberHOST Site NameREMOTE Site Number(Entered automaticallywhen the HOST sitenumber is selected)REMOTE Site NameClick on the Edit buttonto open pop-up screen
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-11© 2005, ADC Telecommunications, Inc.2.3 Reference Procedure: Enter Host Forward AttenuationThe HU internal forward path attenuator setting determines the maximum composite outputsignal level at the RU antenna port. The appropriate attenuation value for any particular systemis based on the number of channels the system is transporting and the signal level of thecomposite forward path signals input at the host units RF IN ports. By default, the forward pathattenuator is set to 31 dB. The maximum output power is 38.1 dBm (6.5 Watts) for 800 MHz and 800/900 MHz SMRsystems and 38.3 dBm (6.7 Watts) for 1900 MHz systems. The total forward path gain that isprovided by the system (with host and remote forward attenuators set to 0 dB) is 77.5 dBm for800/900 MHz SMR systems, 78.1 for 800 MHz systems, and 78.3 for 1900 MHz systems. For800/900 MHz SMR systems, this procedure sets the attenuation for both FORWARD RF IN ports. Use the following procedure to set the forward path attenuation to provide the maximumcomposite output signal level: 1. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-7. Figure 3-7. Typical HOST RF Display2. Click on the Host Fwd Att Edit button (see Figure 3-7). The Host Fwd Att pop-up screenwill open as shown in Figure 3-8. 3. Obtain the value of the total composite input signal level as determined in step 11 ofSection 2.1. Click on Edit buttonto open Host FwdAtt pop-up screen
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-12© 2005, ADC Telecommunications, Inc.Figure 3-8. Host Fwd Att Pop-Up Screen4. Determine the appropriate value to enter for the Host forward path attenuator bysubtracting the required system output level (per system design plan) from the system gain(77.5 dB for 800/900 MHz SMR, 78.1 dB for 800 MHz, and 78.3 dB for 1900 MHz) andthen adding the composite input signal level. The result (see sample calculation) is theamount of attenuation required. Atten = (System Gain) – (Required System Output Power) + (Composite Input Power)5. Enter the attenuation value and click OK to close the pop-up screen and to make thechanges take effect. 2.4 Reference Procedure: Determine Output Signal Level at RU Antenna PortThe RF output signal level should be measured at the RU ANTENNA port to verify that thecomposite signal level is at the expected level. Use the following procedure to determine thepower level:1. Place the AC circuit breaker switch (at the RU power panel) in the open (OFF) position. 2. Disconnect the antenna cable from the RU ANTENNA port. 3. Connect a spectrum analyzer or RF power meter to the HU ANTENNA port. (Check theinput rating of the test equipment. Insert a 30 dB 100 W attenuator if necessary.) 4. Place the AC circuit breaker switch (at the RU power panel) in the closed (ON) position.5. If using a spectrum analyzer, proceed to step 6. If using a power meter, measure thecomposite signal power from the RU and then proceed to step 8.6. Measure the RF level of a single carrier, such as the control channel, in dBm. Make surethe resolution bandwidth of the spectrum analyzer is 30 kHz. Note: The RF output signal level measured in this procedure should be approximately31 dBm less than the output level specified for operation. This is because the factorydefault setting for the remote forward attenuator is 31 dB. The final adjustment of thesystem RF output signal level will be completed in Section 2.5
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-13© 2005, ADC Telecommunications, Inc.7. Calculate the total composite signal power using the following formula: Ptot = Pc + 10Log NWhere,Ptot is the total composite power in dBmPc is the power per carrier in dBm as measured in step 6, andN is the total number of channels. 8. Record the result measured in step 5 or calculated in step 7. 9. Place the AC circuit breaker switch (at the RU power panel) in the open (OFF) position. 10. Disconnect the spectrum analyzer or RF power meter from the HU ANTENNA port. 11. Re-connect the antenna cable to the HU ANTENNA port. 12. Place the AC circuit breaker switch (at the RU power panel) in the closed (ON) position. 2.5 Reference Procedure: Enter Remote Forward AttenuationThe RU internal forward path attenuator setting is used to reduce the power level of thecomposite output signals at the RU. The maximum composite output signal level at the RUantenna port is set using both the HU forward attenuator (see Section 2.3) and the RU forwardattenuator. Component variations may result in the output power at the HU antenna port beingslightly above or below the calculated value. The RU forward attenuator is used in conjunctionwith the HU forward attenuator to add or remove attenuation to produce the required outputsignal level at the antenna port. The default setting for the RU forward attenuator is 31 dB. Usethe following procedure to change the RU forward attenuation: 1. Click on the REMOTE RF tab. The REMOTE RF display will open within the EMS mainwindow as shown in Figure 3-9. 2. Check the level of the RF output signal (as determined in Section 2.4) against the systemdesign plan specifications. The maximum output signal level permitted is 38.1 dBm (6.5Watts) for both 800 MHz and 800/1900 MHz SMR systems; and 38.3 dBm (6.7 Watts) for1900 MHz systems. 3. Determine if more or less attenuation is required to produce the required output signal level. 4. Click on the Remote Fwd Att field Edit button (see Figure 3-9). The Remote Fwd Attpop-up screen will open as shown in Figure 3-10. Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in a fixed location that provides at least 6 meters(20 feet) of separation from all persons.Caution: The RU may be destroyed if the maximum recommended output signal level at the RUantenna port is exceeded. Make sure that sufficient attenuation is inserted in the forward path toprevent the RU from being overdriven.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-14© 2005, ADC Telecommunications, Inc.Figure 3-9. Typical REMOTE LPA DisplayFigure 3-10. Remote Fwd Att Pop-Up Screen5. Enter the required attenuation value and click OK to close the pop-up screen and to makethe changes take effect. 6. Verify that the appropriate RF output signal level appears in the RF Output Power field(see Figure 3-9). This is primarily a reference value and should not take the place ofexternal test equipment when determining the power level of the composite RF outputsignal. Depending on the modulation type and number of channels, the EMS software mayreport a power level that is higher or lower (± 3 dB) than the actual RF output signal. Note: To comply with Maximum Permissible Exposure (MPE) requirements, themaximum composite output from the antenna cannot exceed 1000 Watts EIRP and theantenna must be permanently installed in a fixed location that provides at least 6 meters(20 feet) of separation from all persons.Click Edit button toopen the Remote FwdAtt pop-up screenRF output signallevel (± 3 dB)
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-15© 2005, ADC Telecommunications, Inc.2.6 Reference Procedure: Enter Host Reverse AttenuationThe level of the RF signal that should be input to the EBTS will vary depending on the type ofEBTS, the receive distribution, and the number of channels present. To interface with the EBTS,the reverse path signal level must be adjusted to provide the signal level required at the EBTSinput port(s). The HU provides from –1 to +30 dB of gain in the reverse path. By default, thehost reverse attenuator is set to –31 dB of attenuation which provides –1 dB of gain. Use thefollowing procedure to set the reverse path gain:1. Check the EBTS manufacturer’s specifications to determine the composite signal levelrequired at the reverse path input port(s). Note that 800/900 MHz SMR host units have tworeverse path input ports. 2. Determine the overall gain and loss imposed on the signal by the antenna, antenna cable,and by the cables that connect the HU to the EBTS. 3. Determine the amount of gain required to raise the reverse path signal to the level requiredat the EBTS. 4. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-11. Figure 3-11. Typical HOST RF Display5. Click on the Host Rev Att field Edit button (see Figure 3-11). The Host Rev Att pop-upscreen will open as shown in Figure 3-12. Click Edit button toopen the Host Rev Attpop-up screen
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-16© 2005, ADC Telecommunications, Inc.Figure 3-12. Host Rev Att Pop-Up Screen6. Enter the attenuation value that will provide the required gain. Refer to Table 3-2 for theattenuation values and the corresponding gain (nominal) values. 7. Click OK to close the pop-up screen and to make the changes take effect.2.7 Reference Procedure: Enter Host Forward and Reverse DelayThe forward and reverse delay function allows entry of from 0 to 63 µsec of delay in theforward and reverse paths. This feature is used when multiple systems are used to transport thesame channel and there is a significant difference in the path delay between systems. Additionaldelay may be entered to balance the overall system delay. The amount of delay required must becalculated by the RF engineer and should be included in the system design plan. The defaultsetting is 0 µsec. Use the following procedure to change the forward and reverse path delay: Table 3-2. Reverse Path Attenuation Setting and Nominal Gain ProvidedATTENUATION SETTINGGAIN PROVIDEDATTENUATION SETTINGGAIN PROVIDEDATTENUATION SETTINGGAIN PROVIDED 0 dB →30 dB 11 dB →19 dB 22 dB →8 dB1 dB 29 dB 12 dB 18 dB 23 dB 7 dB2 dB 28 dB 13 dB 17 dB 24 dB 6 dB3 dB 27 dB 14 dB 16 dB 25 dB 5 dB4 dB 26 dB 15 dB 15 dB 26 dB 4 dB5 dB 25 dB 16 dB 14 dB 27 dB 3 dB6 dB 24 dB 17 dB 13 dB 28 dB 2 dB7 dB 23 dB 18 dB 12 dB 29 dB 1 dB8 dB 22 dB 19 dB 11 dB 30 dB 0 dB9 dB 21 dB 20 dB 10 dB 31 dB –1 dB10 dB 20 dB 21 9 dB
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-17© 2005, ADC Telecommunications, Inc.1. Click on the HOST RF tab. The HOST RF display will open within the EMS mainwindow as shown in Figure 3-13. Figure 3-13. Typical HOST RF Display2. Click on the Host Fwd Delay field Edit button (see Figure 3-13). The Host Fwd Delaypop-up screen will open as shown in Figure 3-14. Figure 3-14. Host Fwd Delay Pop-Up Screen3. Obtain the value of the forward delay as specified in the system design plan. The delay isadjustable in 0.1 µsec steps. 4. Enter the forward path delay value and click OK to close the pop-up screen and to makethe changes take effect. 5. Repeat the process for reverse delay by right-clicking on the appropriate delay section (seeFigure 3-13) and then entering the required delay value in the pop-up screen. 6. Click OK to close each pop-up screen and to make the changes take effect.Click Edit button toopen the Host FwdDelay pop-up screenClick Edit button toopen the Host RevDelay pop-up screen
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATIONPage 3-18© 2005, ADC Telecommunications, Inc.Blank
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-1© 2005, ADC Telecommunications, Inc.SECTION 4: MAINTENANCE 1 SYSTEM MAINTENANCE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12 FAULT DETECTION AND ALARM REPORTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23 FAULT ISOLATION AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43.1 Host Unit Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-53.2 RU Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-74 TEST PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114.1 Optical Power Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114.2 Optical Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-135 SCHEDULED MAINTENANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14_________________________________________________________________________________________________________1 SYSTEM MAINTENANCE OVERVIEWThis section explains the Digivance system fault detection and alarm reporting system, providesa method for isolating and troubleshooting faults, and provides test procedures. The Digivancesystem requires minimal regular maintenance to insure continuous and satisfactory operation.The only components that require regular replacement are the HU cooling fans.Maintenance also includes diagnosing and correcting service problems as they occur. When analarm is reported, it will be necessary to follow a systematic troubleshooting procedure to locatethe problem. Once the source of the problem is isolated, the appropriate corrective action can betaken to restore service. The only internal components that can be replaced are the cooling fansthat mount in the HU. The failure of any other internal component will require replacement ofthe entire unit. 1.1 Tools and MaterialsThe following tools and materials are required in order to complete the maintenance proceduresspecified in this section: • IR filtering safety glasses• Patch cords with SC connectors• 15 dB in-line SC optical attenuators• Optical power meter (1550 and 1310 nm)Content Page
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-2© 2005, ADC Telecommunications, Inc.2 FAULT DETECTION AND ALARM REPORTINGThe Digivance LRCS on-board embedded software detects various unit and system faults whichgenerate ether a Major or Minor alarm. A Major alarm indicates that the system has failed in away that directly affects RF transport performance. When a major alarm occurs, all RFfunctions are disabled and the system is out of service. A Minor alarm means that systemperformance is not affected or in some cases, that the performance may no longer be optimal.When a minor alarm occurs, RF functions continue and the system remains in service. The following means are used to report Major and Minor alarms: • HU alarm contacts• HU and RU LED’s• EMS software Graphical User Interface (GUI)• Network Operations Center - Network Element Manager (NOC/NEM) interface• SNMP interfaceThe HU is equipped with a set of both normally open (NO) and normally closed (NC) alarmcontacts which may be used to report both Major and Minor alarms to an external alarm system.The alarm contacts summarize the inputs so that any Major or Minor alarm will trigger an alarmreport to the external alarm system. The HU is equipped with multiple front panel LED indicators that show status and alarminformation by displaying various colors: Green, Red, Yellow, and Off. The RU is equippedwith a single LED indicator that shows status and alarm information by displaying either Red orOff. A detailed description of the Host Unit and Remote Unit LED indicators is providedrespectively in Table 4-1 and Table 4-2. The EMS software GUI provides both a summary and a detailed list of alarm information thatincludes unit and module level faults, circuit faults, and measured value faults such as voltages,RF power, and temperature. A summary showing a list of all systems and their current alarmstatus is presented through the Alarm OverView display. A more detailed list of alarminformation is presented through the HOST alarm display and the REMOTE alarm display. Thevarious fault conditions that trigger a major or minor alarm report are shown in the HOST andREMOTE alarm displays. The NOC/NEM interface provides the same summary and detailed listing of alarm informationas the EMS software GUI but in an ASCII text string format. Sending the command GETALARMSUMMARY produces a list of all systems and their current alarm status. Sending thecommand GET ALARM ALL for a specific system will produce a detailed list of alarminformation for the specified system. The SNMP interface provides alarm information to up to ten SNMP managers which must beregistered with the SNMP agent. The SNMP interface allows the SNMP managers to receive thealarm and status information generated by the host and remote units. The presentation of thealarm information is dependent on the features of the SNMP manager.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-3© 2005, ADC Telecommunications, Inc.Table 4-1. Host Unit LED IndicatorsINDICATOR COLOR DESCRIPTIONPOWERGreenOffIndicates if the HU is powered or un-powered.The DC power source is on.The DC power source is off.STANDBYGreen (blinking)Yellow (blinking)Red (blinking)OffIndicates if the system is in the standby, normal, test, or program load mode.The HU is in the standby mode.The HU is in the program load mode. The HU is in the test mode.The HU is in the normal mode. HOST UNITGreenYe l l owRedIndicates if the HU is normal, over temperature, if an internal fault is detected, or if there is an equipment mis-match. The HU is normal. The HU is over temperature or detects an internal fault. The HU detects an internal fault or HU/RU band mismatch.REMOTE UNITGreenYe l l owRedIndicates if an alarm is detected at the RU. No alarms detected at the RU.A minor alarm is detected at the RU.A major alarm is detected at the RU. DRIVE 851–869DRIVE 935–940(Rear Access HU)DRIVE(Front Access HU)GreenYe l l owRedIndicates if the specified forward path RF signal level is normal, above overdrive threshold, or below underdrive threshold. The RF signal level is normalThe RF signal level is below the underdrive threshold.The RF signal level is above the overdrive threshold. FWD/REV(PORT 1/PORT 2)GreenRedIndicates if the reverse path optical signals from the RU are normal, if errors are detected, or if the optical signal is not detected.The reverse path optical signals are normal. Excessive errors (see Note) are detected in the reverse path optical signals or the HU is not receiving a reverse path optical signal. Note: Excessive errors means the Bit Error Rate (BER) has exceeded 10–6 (1 bit error per million bits).Table 4-2. Remote Unit LED IndicatorINDICATOR COLOR DESCRIPTIONSTATUSOffRedIndicates if the RU is unpowered, normal, or if an internal fault is detected.The RU is unpowered or the RU is normal and no faults are detected. The RU detects an internal fault, excessive errors (see Note) are detected in the forward path optical signals, or the RU is not receiving a forward path optical signal.Note: Excessive errors means the Bit Error Rate (BER) has exceeded 10–6 (1 bit error per million bits).
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-4© 2005, ADC Telecommunications, Inc.3 FAULT ISOLATION AND TROUBLESHOOTINGAlarm information may be accessed using the HU and RU LED indicators, the EMS softwareGUI, the NOC-NEM interface, or the SNMP manager. When an alarm occurs, use the unit LEDindicator(s) and any one of the specified software tools to determine which Digivance system isaffected, which unit (HU or RU) reported the alarm, and the fault that generated the alarm. Thenrefer to either Section 3.1 Host Unit Troubleshooting or Section 3.2 RU Troubleshooting toisolate the problem and to determine the corrective action required. When attempting to isolate a problem, always determine the initial fault that generated thealarm report. Some faults may cause additional faults to be reported which tends to obscure theinitial reason for the alarm. To help isolate faults, the EMS GUI provides an AlarmOverviewscreen, shown in Figure 4-1, that indicates which Digivance system/unit is reporting the alarm.Figure 4-1. AlarmOverView Screen The AlarmOverview screen includes an ALARM HIST indicator which the user should click toacknowledge that an alarm exists. Acknowledging the alarm opens the Alarm History Infodialog box (also shown in Figure 4-1) which directs the user to view the EMS Log file fordetails. The EMS Log file lists the various faults in the order in which they occurred. Clear eachfault starting with the initial fault. In most instances, clearing the initial fault will also clear anyremaining faults. For additional information on using the AlarmOverview screen, refer to theDigivance Element Management System User Manual (see Related Publications section).Note: It is recommended that if there are alarms at both the HU and RU, the optical faultsshould be checked and cleared first. Because the HU and RU function as a system, a faultin the fiber optic link will cause alarms to be reported by both the HU and RU. Click to acknowledgealarm and to open AlarmHistory Info dialog boxClick to clear alarmhistory fault indicatorand to close AlarmHistory Info dialog box
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-5© 2005, ADC Telecommunications, Inc.3.1 Host Unit TroubleshootingUse this section to troubleshoot alarms that originate with the Host Unit. When a Minor alarmoccurs, one (or more) of the Host Unit LED’s with turn yellow and the EMS software will indicatea minor fault/alarm. When a Major alarm occurs, one (or more) of the Host Unit LED’s will turnred and the EMS software will report a major fault/alarm. Locate the LED and the correspondingsoftware fault/status indicator in Table 4-3 and then take the corrective action indicated.Table 4-3. Host Unit Fault/Alarm Isolation DiagramPowerHost Unit Front Panel LEDStandbyHostUnitGreen - NormalYellow - Minor AlarmRed - Major AlarmGreen - PoweredOff - Not poweredGreen blinking - StandbyYellow blinking - Program loadRed blinking - TestOff - NormalTemperature - Over temperatureFwd Synth Lock - Forwardsynthesizer out of lockLO Synth Lock - Localoscillator synthesizer out of lockPri Rev Synth Lock - Reverseprimary synthesizer out of lock8 Volt - Onboard 8 Volt powersupply below threshold3.8 Volt - Onboard 3.8 Volt powersupply below thresholdPri Fwd Mux Lock - Forward primaryphase locked loop out-of-lockPri Laser Fail - Forward primarylaser failureHardware mismatch - Host and Remote band mismatchReverse Link FaultSoftware Fault/Status IndicatorReplace HUTable 4-5Problem GTable 4-5Problem BReplace HU orRU withcorrect unitCorrective Actionor ReferenceOper Mode - Operationalmode of systemNo specific HU faults - Only faults with no associated LEDare displayedTable 4-5Problem AUse EMS to change system torequired modeContinued20013-BRemoteUnitGreen - NormalYellow - Minor Alarm at Remote Unit - See Table 4-5. Remote Unit Fault/Alarm Isolation DiagramRed - Major Alarm at Remote Unit - See Table 4-5. Remote Unit Fault/Alarm Isolation Diagram
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-6© 2005, ADC Telecommunications, Inc.Table 4-4. Host Unit Fault/Alarm Corrective ActionPROBLEM A: The HU is not powered.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The HU is turned off. 2. The fuse is open/removed from the fuse panel or the DC power has failed.1. Place On/Off switch in the On position. 2. Check DC power source, repair as needed, and replace or reinstall fuse at fuse panel. PROBLEM B: The HU is overheating.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Air intake or exhaust opening to HU chassis is blocked2. Ambient temperature > 50º C/122º F. 3. Faulty fan. 4. The HU has failed. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature.3. Replace HU fan (See applicable manual).4. Replace HU. Host Unit Front Panel LED Software Fault/Status Indicator Corrective Actionor ReferenceTable 4-3. Host Unit Fault/Alarm Isolation Diagram, continuedFwd/Rev(Port 1/Port 2)See Table 4-4Problem ESee Table 4-4Problem EGreen - NormalRed - Major AlarmPri Rx Light - No light receivedover optical reverse pathPri Rx Errors - Excessive errorsreceived over optical reverse pathSee specificfault indicatorSee specificfault indiatorMinor Contact Output - Minor alarmreported by HU or STMMajor Contact Output - Major alarmreported by HU or STMRemote Lost - The HU cannotcommunicate with remote (STM)EMS Link Status - The EMS cannotcommunicate with HUNo Associated LEDSee Table 4-4Problem ESee Table 4-4Problem F20583-ADrive851-869(REARACCESS)Green - NormalYellow - Minor AlarmRed - Major AlarmRF Underdrive 800 MHz - 800 MHzforward path RF signal level too lowRF Overdrive 800 MHz - 800 MHzforward path RF signal level too highTable 4-4Problem CTable 4-4Problem DDrive935-940(REARACCESS)Green - NormalYellow - Minor AlarmRed - Major AlarmRF Underdrive 900 MHz - 900 MHzforward path RF signal level too lowRF Overdrive 900 MHz - 900 MHzforward path RF signal level too highTable 4-4Problem CTable 4-4Problem DDrive(FRONTACCESS)Green - NormalYellow - Minor AlarmRed - Major AlarmRF Underdrive - Forward pathRF signal level too lowRF Overdrive - Forward pathRF signal level too highTable 4-4Problem CTable 4-4Problem D
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-7© 2005, ADC Telecommunications, Inc.3.2 RU TroubleshootingUse this section to troubleshoot alarms that originate with the RU. When a Minor or Majoralarm occurs, the RU STATUS LED will turn red and the EMS software will indicate a minor ormajor fault/alarm. Use the EMS software to identify the fault and then refer to Table 4-5 todetermine the corrective action required. PROBLEM C: The RF input signal level is below the underdrive threshold. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Composite output signal from EBTS is too low.2. Faulty coaxial connection between the HU and the EBTS.3. Incorrect attenuation in forward path RF coaxial link. 1. Check EBTS composite output signal level and adjust if too low. 2. Correct EBTS cables if faulty. 3. Check Host Forward Attenuator setting and adjust if attenuation is too high.PROBLEM D: The RF input signal is above the overdrive threshold.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Composite output signal level from EBTS is too high. 2. Incorrect attenuation in forward path RF coaxial link. 1. Check EBTS composite output signal level and adjust if too high. 2. Check Forward Attenuator setting and adjust if attenuation is too low. PROBLEM E: No light received over the reverse path or excessive errors received over the reverse pathPOSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty reverse path optical fiber. 2. Faulty optical transmit port at the RU; or faulty optical receive port at the HU1. Test optical fiber. Clean connector if dirty. Repair or replace optical fiber if faulty. (See Section 4.1).2. Test optical ports. Replace HU or RU if port is faulty (See Section 4.2). PROBLEM F: The HU does not respond to control or monitoring commands sent by the EMS. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The HU is not powered. 2. The cable connection between the HU and the EMS computer is faulty.3. The CAN cable connections between the HUs in a multiple HU installation are faulty.1. See Problem A this table. 2. Inspect EMS cable and repair or replace if faulty.3. Inspect each CAN cable and repair or replace if faulty.PROBLEM G: There is a loss of gain in either the primary or diversity reverse path of 10 dBm or greater. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The HU has failed. 2. The RU has failed1. Replace the HU. 2. Replace the RU. Table 4-4. Host Unit Fault/Alarm Corrective Action, continued
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-8© 2005, ADC Telecommunications, Inc.Table 4-5. Remote Unit Fault/Alarm Isolation DiagramRemote Unit LED Software Fault/Status IndicatorOff - Not powered or NormalNo Response for Minor AlarmRed - Major AlarmTemperature - Over temperatureReplace RUSee Table 4-6Problem ACorrective Actionor ReferenceConverter - Power supplyconverter failureLO Synth Lock - Localoscillator synthesizer out of lockFwd Synth Lock - Forwardsynthesizer out of lockPri Rev Synth Lock - Reverseprimary synthesizer out of lockRef Synth Lock - Referencesynthesizer out of lock8 Volt - Onboard 8 Volt powersupply below threshold3.8 Volt - Onboard 3.8 Volt powersupply below thresholdPri Rev Mux Lock - Reverse primaryphase locked loop out-of-lockPri Laser Fail - Reverse primarylaser failureLPA DC Fail - LPAapower supply failureLPA Loop Fail - LPAinternal loop failureLPA Low Power - LPAinternal amplifier failureContinued 20584-BSee Table 4-6Problem ESee Table 4-6Problem ESee Table 4-6Problem CSee Table 4-6Problem BSee Table 4-6Problem ASee Table 4-6Problem DReplace HU orRU withcorrect unitLPA Temp - LPA overtemperatureLPA Over Power - LPAsignal level too highLPA VSWR - The LPAVSWR is too highSystem VSWR - The VSWR atthe quadraplexer is too highPri Rx Light - No light receivedover optical forward pathPri Errors - Excessive errorsreceived over optical forward pathHardware mismatch - Host andRemote band mismatchOne LED, nodesignation
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-9© 2005, ADC Telecommunications, Inc.Table 4-6. Remote Unit Fault/Alarm Corrective ActionPROBLEM A: The RU (STM or LPA) is overheating.POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Debris preventing air from freely circulating around the RU aluminum enclosure. 2. Ambient temperature > 50º C/122º F. 3. The RU has failed. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature.3. Replace RU.PROBLEM B: The output power from the LPA exceeds the maximum rating. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The power level of the RF forward path composite input signal at the HU is too high. 2. The RU (LPA) has failed. 1. Check the power level of the RF composite input signal at the HU and adjust to correct level. To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode. 2. Replace RU.PROBLEM C: The VSWR at the LPA exceeds the threshold setting of 3:1. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The antenna cable or antenna cable connectors are faulty. 2. The antenna or antenna system is faulty. 3.The RU qudraplexer or LPA has failed. 1. Inspect antenna cable and connectors and repair or replace as needed.To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.2. Check the antenna circuit for shorts or opens (including lightning protector). To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.3. Replace RU.Remote Unit LED Software Fault/Status Indicator Corrective Actionor ReferenceHost Lost - The STM cannotcommunicate with Host (HU)EMS Link Status - The EMS cannotcommunicate with STMRF Power - No RF power detectedat quadraplexer (STM)LPA Disable - The LPA is shut downNo Associated LED See Table 4-6Problem GSee Table 4-6Problem FSee Table 4-6Problem ESee Table 4-6Problem HTable 4-5. Remote Unit Fault/Alarm Isolation Diagram, continued20585-A
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-10© 2005, ADC Telecommunications, Inc.PROBLEM D: The forward path VSWR is above threshold. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty antenna or antenna system.2. Faulty antenna cable. 3. The RU qudraplexer has failed. 1. Check the antenna system for shorts or opens (including lightning protector). To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode.2. Check the antenna cable for faulty connections.3. Replace the RU. PROBLEM E: No light received over the forward path or excessive errors received over the forward pathPOSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. Faulty forward path optical fiber. 2. Faulty optical transmit port at the HU; or faulty optical receive port at the RU.1. Test optical fiber. Clean connector if dirty. Repair or replace optical fiber if faulty. (See Section 4.1).2. Test optical ports. Replace HU or RU if port is faulty (see Section 4.2). PROBLEM F: The RU does not respond to control or monitoring commands sent by the EMS. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The cable connection between the HU and the EMS computer is faulty.1. Inspect EMS cable and repair or replace if faulty.PROBLEM G: No RF power is detected at the RU quadraplexer. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. No RF power is being input to the HU or the RF input signal level at the HU is too low. 2. The RU (LPA) is faulty. 1. Check the RF input power level at the HU and adjust until within specifications. 2. Replace RU. PROBLEM H: The RF output form the RU (LPA) is shut down. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS1. The LPA is in the forced shutdown mode.2. The RU (LPA) is faulty. 1. Check for fault conditions that will cause a major alarm. Correct faults as required. To reset, use EMS to place Digivance system in standby mode and then place system back in normal mode2. Replace RU. Table 4-6. Remote Unit Fault/Alarm Corrective Action, continued
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-11© 2005, ADC Telecommunications, Inc.4 TEST PROCEDURESThis section provides procedures for common troubleshooting and maintenance tests. Refer tothese procedures as needed when specified in the Fault/Alarm Isolation Diagrams in Section 3. 4.1 Optical Power TestA break in an optical fiber or a fault with the optical connector will interrupt communicationsbetween linked components or generate excessive errors. Use the following procedure to isolatea problem with an optical fiber or connector. 1. Put on the IR filtering safety glasses. 2. Notify the NOC or alarm monitoring system operator that the system is going offline. 3. At the HU, place the On/Off switch in the OFF position (press O). At the RU, place theAC circuit breaker switch in the open (OFF) position. 4. Disconnect the optical fiber connectors for the fiber to be tested at the HU and the RU. 5. Inspect the optical connectors. Verify that connectors are clean and that no scratches orimperfections are visible on the fiber end. Clean and polish the optical connectors if necessary. 6. Connect the optical power meter to the output (receiver) end of the optical fiber as shownin Figure 4-2. If an attenuator was included in the fiber link, make sure it is installed. Figure 4-2. Forward and Reverse Path Optical Fiber Test Set UpDanger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiationcan seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do notlook directly into the optical transmitter of any unit or exposure to laser radiation may result.An optical power meter should be used to verify active fibers. A protective cap or hood MUSTbe immediately placed over any radiating transmitter or optical fiber connector to avoid thepotential of dangerous amounts of radiation exposure. This practice also prevents dirt particlesfrom entering the connector.Note: Turning off the HU and RU disables the respective lasers which is necessary inorder to safely inspect and clean the optical connectors. HOST UNITFWD(PORT 1)REV(PORT 2)BAND 2 BAND 1ATTENUATOR(IF USED)ATTENUATOR(IF USED)FWD/REV PATHOPTICAL FIBERFWD/REV PATHOPTICAL FIBER-15 TO -25 dBm-15 TO -25 dBmFORWARD PATH OPTICAL FIBER TEST SET UP REVERSE PATHOPTICAL FIBER TEST SET UP20979-AREMOTE UNITOPTICAL POWERMETEROPTICAL POWERMETERWDMWDM233SEE TAG ON PORT TO IDENTIFY SYSTEM
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-12© 2005, ADC Telecommunications, Inc.7. Connect the input (transmitter) end of the optical fiber to the transmitting HU or RU. 8. If the transmitting unit is the HU, place the On/Off switch in the ON position (press I). Ifthe transmitting unit is the RU, close (turn on) the AC circuit breaker switch. 9. Using the transmitting HU or RU as an optical light source, measure the optical power atthe receiver end of the optical fiber. The power level of the optical signal received at theHU or RU should be –15 to –25 dBm (with attenuator installed). If the power level of thereceived optical signal is within this range, the optical fiber and the far end unit are good.If the power level of the signal is greater than –15 dBm, insert additional attenuation tobring the signal level within the specified range. If the power level is less than –25 dBm,the value of the external attenuator is too high, the optical fiber is faulty, or the far end unitoptical transmitter is faulty. Continue with test procedure to isolate the problem 10. If the transmitting unit is the HU, place the On/Off switch in the OFF position (press O).If the transmitting unit is the RU, open (turn off) the AC circuit breaker switch. 11. Disconnect the optical power meter from the receiver end of the optical fiber.12. Use a 1 meter patch cord to connect the optical power meter to the transmitting HU orRU as shown in Figure 4-3.Figure 4-3. Host Unit and Remote Unit Optical Transmitter Test Set Up13. If the transmitting unit is the HU, place the On/Off switch in the ON position (press I). Ifthe transmitting unit is the RU, close (turn on) the AC circuit breaker switch. 14. Measure the optical output power of the transmitting HU or RU. The power level of theoptical output signal from the HU or RU must meet the following specification: Forward Path Signal at the HU: 0 + 1 dBmReverse Path Signal at the RU: +1.3 + 1 dBmIf the power level of the optical output signal is within specifications with a 1 meter patchcord installed, the fiber optic link is faulty. If the power level of the optical signal is notwithin specifications, the far end HU or RU optical transmitter is faulty.Caution: Erratic operation may occur with an optical input signal level of –13 dBm or higher.If the optical input signal level exceeds –9 dBm, the optical receiver may be damaged. HOST UNITREMOTE UNIT+1.3 +/- 1 dBm0 +/- 1 dBmHOST UNIT OPTICAL TRANSMITTERTEST SET UPREMOTE UNIT OPTICAL TRANSMITTERTEST SET UP1 METER PATCH CORD1 METER PATCH CORD 20980-AFWD(PORT 1)REV(PORT 2)BAND 2 BAND 1OPTICAL POWERMETEROPTICAL POWERMETERSEE TAG ON PORT TO IDENTIFY SYSTEM
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-13© 2005, ADC Telecommunications, Inc.15. If the transmitting unit is the HU, place the On/Off switch in the OFF position (press O).If the transmitting unit is the RU, open (turn off) the AC circuit breaker switch. 16. Disconnect the optical power meter from the receiver end of the optical fiber.17. Reconnect the optical fibers to the receiving HU or RU. 18. Repeat steps 3 through 17 for each optical fiber that requires testing. 19. When ready to put the system back into service, place the On/Off switch on the HU in theON position (press I) and close (turn on) the AC circuit breaker switch for the RU. 20. Notify the NOC or alarm monitoring service that the system is going back online. 4.2 Optical Loopback TestThe following procedure provides a test to determine if an optical port fault exists with the HostUnit. 1. Put on the IR filtering safety glasses. 2. Notify the NOC or alarm monitoring system operator that the system is going offline. 3. Place the On/Off switch in the OFF position (press O).4. Disconnect the optical fiber connectors from the FWD (PORT 1) and REV (PORT 2)optical ports and place a dust cap over each connector. 5. Plug a 15 dB in-line optical attenuator into the FWD (PORT 1) optical port as shown inFigure 4-4. 6. Connect a 1 meter patch cord between the optical attenuator and the REV (PORT 2)optical port. 7. Place the On/Off switch in the ON position (press I). Note: Because the RU is equipped with a WDM, the optical loopback test cannot beperformed on the RU. Danger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiationcan seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do notlook directly into the optical transmitter of any unit or exposure to laser radiation may result.An optical power meter should be used to verify active fibers. A protective cap or hood MUSTbe immediately placed over any radiating transmitter or optical fiber connector to avoid thepotential of dangerous amounts of radiation exposure. This practice also prevents dirt particlesfrom entering the connector. Caution: The optical receiver can be damaged if the power level of the optical input signal istoo high. To avoid damaging the optical receiver when performing the loopback test, alwaysinstall a 15 dB in-line attenuator in the optical receiver circuit.
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 4: MAINTENANCEPage 4-14© 2005, ADC Telecommunications, Inc.Figure 4-4. Host Unit Loopback Test8. Observe the FWD/REV (PORT 1/PORT 2) LED indicator which will turn either red orgreen. If the LED turns red, either the FWD (PORT 1) optical transmitter or the REV(PORT 2) receiver is faulty. If the LED turns green, both the FWD (PORT 1) and the REV(PORT 2) optical ports are good. 9. Place the On/Off switch in the OFF position (press O).10. Remove the dust caps from the optical fiber connectors. 11. Clean each connector (follow connector supplier’s recommendations) and then insert eachconnector into the appropriate optical port. 12. When ready to put the HU back into service, place the On/Off switch in the ON position(press I). 13. Notify the NOC or alarm monitoring service that the system is going back online.5 SCHEDULED MAINTENANCE REQUIREMENTSThe only scheduled maintenance required for the SCS system is to remove and replace the HUcooling fans. This should be done at 60 month intervals. Refer to the applicable DigivanceLRCS Host Unit Installation and Maintenance Manual (See Related Publications section) forthe procedure. HOST UNIT1 METER PATCH CORD15 dBATTENUATOR20019-CFWD(PORT 1)REV(PORT 2)
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 5: GENERAL INFORMATIONPage 5-1© 2005, ADC Telecommunications, Inc.SECTION 5: GENERAL INFORMATION1 WARRANTY/SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12 SOFTWARE SERVICE AGREEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13 REPAIR/EXCHANGE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14 REPAIR CHARGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-25 REPLACEMENT/SPARE PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-26 RETURNED MATERIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-27 CUSTOMER INFORMATION AND ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3_________________________________________________________________________________________________________1 WARRANTY/SOFTWAREThe Product and Software warranty policy and warranty period for all ADC Products ispublished in ADC’s Warranty/Software Handbook. Contact the Technical Assistance Center at1-800-366-3891, extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A. andCanada) for warranty or software information or for a copy of the Warranty/SoftwareHandbook.2 SOFTWARE SERVICE AGREEMENTADC software service agreements for some ADC Products are available at a nominal fee.Contact the Technical Assistance Center at 1-800-366-3891, extension 73476 (in U.S.A. orCanada) or 952-917-3476 (outside U.S.A. and Canada) for software service agreementinformation.3 REPAIR/EXCHANGE POLICYAll repairs of ADC Products must be done by ADC or an authorized representative. Anyattempt to repair or modify ADC Products without written authorization from ADC voids thewarranty.If a malfunction cannot be resolved by the normal troubleshooting procedures, call theTechnical Assistance Center at 1-800-366-3891, extension 73476 (in U.S.A. or Canada) or952-917-3476 (outside U.S.A. and Canada). A telephone consultation can sometimes resolve aproblem without the need to repair or replace the ADC Product.If, during a telephone consultation, ADC determines the ADC Product needs repair, ADC willauthorize the return of the affected Product for repair and provide a Return MaterialAuthorization number and complete return shipping instructions. If time is critical, ADC canarrange to ship the replacement Product immediately. In all cases, the defective Product must becarefully packaged and returned to ADC.Content Page
ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 5: GENERAL INFORMATIONPage 5-2© 2005, ADC Telecommunications, Inc.4 REPAIR CHARGESIf the defect and the necessary repairs are covered by the warranty, and the applicable warrantyperiod has not expired, the Buyer’s only payment obligation is to pay the shipping cost to returnthe defective Product. ADC will repair or replace the Product at no charge and pay the returnshipping charges.Otherwise, ADC will charge a percentage of the current Customer Product price for the repairor NTF (No Trouble Found). If an advance replacement is requested, the full price of a new unitwill be charged initially. Upon receipt of the defective Product, ADC will credit Buyer with 20percent of full price charged for any Product to be Out-of-Warranty. Products must be returnedwithin thirty (30) days to be eligible for any advance replacement credit. If repairs necessitate avisit by an ADC representative, ADC will charge the current price of a field visit plus round triptransportation charges from Minneapolis to the Buyer’s site.5 REPLACEMENT/SPARE PRODUCTSReplacement parts, including, but not limited to, button caps and lenses, lamps, fuses, and patchcords, are available from ADC on a special order basis. Contact the Technical Assistance Centerat 1-800-366-3891, extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A.and Canada) for additional information.Spare Products and accessories can be purchased from ADC. Contact Sales Administration at1-800-366-3891, extension 73000 (in U.S.A. or Canada) or 1-952-938-8080 (outside U.S.A.and Canada) for a price quote and to place your order.6 RETURNED MATERIALContact the ADC Product Return Department at 1-800-366-3891, extension 73748 (in U.S.A. orCanada) or 952-917-3748 (outside U.S.A. and Canada) to obtain a Return MaterialAuthorization number prior to returning an ADC Product.All returned Products must have a Return Material Authorization (RMA) number clearlymarked on the outside of the package. The Return Material Authorization number is valid for 90days from authorization.
Page 5-3ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 5: GENERAL INFORMATION7 CUSTOMER INFORMATION AND ASSISTANCE© 2005, ADC Telecommunications, Inc.All Rights ReservedPrinted in U.S.A13944-MWRITE:ADC TELECOMMUNICATIONS, INCPO BOX 1101,MINNEAPOLIS, MN 55440-1101, USAADC TELECOMMUNICATIONS (S'PORE) PTE. LTD.100 BEACH ROAD, #18-01, SHAW TOWERS.SINGAPORE 189702.ADC EUROPEAN CUSTOMER SERVICE, INCBELGICASTRAAT 2,1930 ZAVENTEM, BELGIUMPHONE:EUROPESales Administration: +32-2-712-65 00Technical Assistance: +32-2-712-65 42EUROPEAN TOLL FREE NUMBERSUK: 0800 960236Spain: 900 983291France: 0800 914032Germany: 0180 2232923U.S.A. OR CANADASales: 1-800-366-3891 Extension 73000Technical Assistance: 1-800-366-3891 Connectivity Extension 73475 Wireless Extension 73476ASIA/PACIFICSales Administration: +65-6294-9948Technical Assistance: +65-6393-0739ELSEWHERESales Administration: +1-952-938-8080Technical Assistance: +1-952-917-3475Italy: 0800 782374PRODUCT INFORMATION AND TECHNICAL ASSISTANCE:Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice.In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC furtherdisclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer ofliability applies to all products, publications and services during and after the warranty period. This publication may beverified at any time by contacting ADC's Technical Assistance Center. euro.tac@adc.comasiapacific.tac@adc.comwireless.tac@adc.comconnectivity.tac@adc.com
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