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ADCP-75-110 

•

 Issue 2B 

•

 July 2001 

Page 19 

©

 2001, ADC Telecommunications, Inc. 

2.3  

Powering  Requirements 

2.3.1  DHU and DEU Powering  

The

  DHU  and  DEU  are  powered  by  120–240  Vac  (50–60  Hz)  which  is  supplied through a 

standard

 three-conductor AC power cord. The 120 Vac power cord is provided with the unit 

and

 is 98 inches (2.5 m) long. Both the DHU and the DEU have a current rating of 2.0 Amps 

at

 120 Vac input. Locate each unit so that an AC outlet is within the reach of the power cord.  

If

  back-up  powering  is  required,  it  is recommended that the building Uninterruptible Power 

Supply

 (UPS) system be used to provide back-up power to the DHU and DEU in the event of 

an

 AC power outage.  

2.3.2  DRU Powering  

The

 DRU is powered by 48 Vdc power which is supplied to the DRU through the front panel 

RJ-45

 connector. Power to the DRU may be provided by the DHU, DEU, or by a 120 Vac to 

48

  Vdc  power  converter  (available  separately  as an accessory item) plugged into a properly 

grounded

 120 Vac outlet. The DRU has a current rating of 350 mA at 48 Vdc input.  

If

 the DRU will be powered by the DHU or DEU, the power cable must be fabricated on-site by the 

installer.

  Use  category  3  or  5  twisted  pair  cable  as  the  power  supply  cable  when  the  DRU  is 

powered

  by  the  DHU  or  DEU.  The  maximum  recommended  length  of  the  power  cable  is  500 

meters.

 If the DRU will be located more than 500 meters from the DHU or DRU, the DRU must be 

locally

 powered by a 48 Vdc power converter. Route the power cable between the power source and 

the

 DRU. Terminate both ends of the power cable with a male RJ-45 connector.  

The

  DRU  may  be  powered  locally  by  the  ac/dc  converter,  shown  in  Figure  10,  which  is 

available

  as  an  accessory  item.  The  converter  is  a  UL  Listed  stand  alone  Limited  Power 

Supply

 (LPS) unit with a rated output of 48 Vdc at 1.2 Amps. The converter is equipped with 

a

  6-foot  (1.8  m)  DC  power  cable  which  is  terminated  with  an  RJ-45  male  connector.  The 

converter

 is powered by 120–240 Vac (50–60 Hz) power which is supplied though a standard 

three-conductor

  AC  power  cord.  The  120  Vac  power  cord  is  6  feet  (1.8  m)  long  and  is 

provided

 with the converter.  

15988-A

 

Figure 10. AC/DC Power Converter 

Summary of Contents for Digivance

Page 1: ...ADCP 75 110 Issue 2B July 2001 Digivance 800 1900 MHz Indoor Coverage Solution Installation and Operation Manual DRAFT 1175170 Rev A FCC ID F8I DVICS1900 1 ...

Page 2: ...ontents 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 further disclaims any and all liability for indirect incidental special consequential or other similar damages This disclaimer of liability applies to all produc...

Page 3: ...ments 23 2 9 Frequency Band Selection Requirements 1900 Mhz 23 2 10 Maintenance Requirements 24 2 11 System Design Recommendations 24 3 DIGITAL HOST UNIT INSTALLATION PROCEDURE 27 3 1 System Plan Review and Pre Installation Cable Routing 27 3 2 Tools and Materials 27 3 3 Unpacking and Inspection 28 3 4 Frequency Band Selection Procedure 1900 Mhz DHU Only 28 3 5 Mounting Procecure 29 3 6 Chassis Gr...

Page 4: ...on and Troubleshooting 47 5 4 Test Procedures 50 5 5 DHU or DEU Fan Replacement 54 6 GENERAL INFORMATION 57 6 1 Warranty Software 57 6 2 Software Service Agreement 57 6 3 Repair Exchange Policy 57 6 4 Repair Charges 57 6 5 Replacement Spare Products 58 6 6 Returned Material 58 6 7 Customer Information and Assistance 58 ...

Page 5: ...blications section and at appropriate points within this manual RELATED PUBLICATIONS Listed below are related manuals and their publication numbers Copies of these publications can be ordered by contacting the ADC Technical Assistance Center at 1 800 366 3891 in U S A or Canada or 952 946 3000 extension 63475 outside U S A and Canada Title Description ADCP Number Digivance ICS Digital Expansion Un...

Page 6: ...receiving an electrical shock when installing or using electrically powered equipment To prevent electrical shock never install or use electrical equipment in a wet location or during a lightning storm Warning The DRU is powered by 48 VDC power which is supplied over customer provided wiring To prevent electrical shock when installing or modifying the DRU power wiring disconnect the wiring at the ...

Page 7: ... AMPS Advanced Mobile Phone Service CDMA Code Division Multiple Access CDRH Center for Devices and Radiological Health CUL Canadian Underwriters Laboratories DAS Distributed Antenna System DC Direct Current DEU Digital Expansion Unit DHU Digital Host Unit DRU Digital Remote Unit EIA Electronic Industries Association ERP Effective Radiated Power ESD Electrostatic Discharge FCC Federal Communication...

Page 8: ......

Page 9: ...ost Unit DHU Digital Remote Unit DRU and when additional capacity or longer fiber runs are required the Digital Expansion Unit DEU In addition two accessory items the Local Interface Unit LIU and the Remote Interface Unit RIU may be used as needed to interface the DHU with the cellular system Base Transceiver Station BTS 1 1 2 Interface With BTS The DHU interfaces either locally or remotely with t...

Page 10: ...cellular phones In the reverse path the DRU receives RF signals from each cellular phone The DRU digitizes the RF signals and then converts them to digital optical signals for transport to the DHU In the forward path the DRU receives digital optical signals from the DHU The DRU converts the optical signals back to the original RF signal format for transmission to the cellular phones A small antenn...

Page 11: ... or a second DEU may be connected to the first DEU The ability to cascade DEU s in parallel or in series provides unlimited flexibility It is physically possible to connect an unlimited number DRUs to the DHU through the installation of DEUs The maximum number of DRUs that can connected to the DHU is limited only by the cumulative noise effect caused by antenna combining 1 1 6 Power Requirements T...

Page 12: ...heat sink and controls RF emissions Except for the fan units the electronic circuit board assemblies are not user replaceable The DHU is designed for use within a non condensing indoor environment such as inside a wiring closet or cabinet All controls connectors and indicators are mounted on the DHU front panel for convenient access Cable management functions for the power and fiber optic cables a...

Page 13: ...ic Gain Control AGC 1 2 5 Optical and Electrical Interface Connections Operation of the DRUs and DEUs is supported by six optical and six electrical ports Each optical and electrical interface connection includes a status LED a small form factor LC type optical transceiver an RJ 45 DC power jack and a port enable disable switch An optical port may be connected to a DRU a DEU or not used An electri...

Page 14: ...al input from the DRU or remote DEU is normal or lost see Note 4 ON OFF Ports 1 6 I O rocker switch Enables or disables corresponding electrical and optical ports 5 DC PWR Ports 1 6 RJ 45 jack female Used for connecting a DRU cat 3 or 5 power cable to the designated DC power jack 6 FIBER Ports 1 6 Small form factor LC type optical transceiver Used for connecting each DEU or DRU forward path and re...

Page 15: ...CHES 53 mm 16420 A Figure 4 Digital Remote Unit 1 3 1 Primary components The DRU consists of an electronic circuit board assembly that is mounted within a powder coated sheet metal enclosure The metal enclosure provides a mounting point for the electronic assembly serves as a heat sink and controls RF emissions The electronic circuit board assembly is not user replaceable The DRU is designed for u...

Page 16: ...Powering The DRU is equipped with a female RJ 45 jack that provides a point for connecting a DC power cable The DRU is powered by 34 48 Vdc power which is supplied through the RJ 45 connector Power to the DRU may be supplied by the DHU DEU or by a 120 Vac to 48 Vdc power converter available separately as an accessory item plugged into a properly grounded 120 Vac outlet The ac dc converter is a UL ...

Page 17: ...emale Used for connecting the antenna coaxial cable lead Note A detailed description of LED operation is provided in Section 4 1 4 Digital Expansion Unit Description The DEU shown in Figure 6 serves as a service expansion unit and line extender for the Digivance ICS The DEU provides the following basic functions Optical interface to the DHU and up to six DRUs or DEUs Conversion of the forward path...

Page 18: ...he DEU front panel 1 4 2 Mounting The DEU may be used in both rack mount and wall mount applications For rack mount applications a pair of reversible mounting brackets is provided that allow the DEU to be mounted in either a 19 inch or 23 inch EIA or WECO equipment rack When rack mounted the front panel of the DEU is flush with the front of the rack The cable management tray extends 3 9 inches 99 ...

Page 19: ...er cord is provided with the DEU and is 98 inches 2 5 meters long A reset able circuit breaker On Off switch is provided at the unit front panel The switch applies power to the DEU internal power supply 1 4 6 Cooling Continuous air flow for cooling is provided by dual fans mounted on the right side of the sheet metal housing A minimum of 3 inches 76 mm of clearance space must be provided on both t...

Page 20: ...the designated optical port 7 HOST PORT Small form factor LC type optical transceiver Used for connecting the DHU or supporting DEU forward path and reverse path optical link 8 UNIT Multi colored LED Red Green Yellow Indicates if the DEU is normal or faulty see Note 9 HOST PORT Multi colored LED Red Green Yellow Indicates if the forward path optical input from the DHU or supporting DEU is normal o...

Page 21: ...l input to port Power Up State The period between the application of power to a unit and the normal state This period includes time for circuit stabilization and initialization operations Reverse Path Signal A signal that travels from one or more cell phones to the base station Transport Alarm Signal An alarm signal transported over the fiber optic link Unit Alarm A fault within a unit that usuall...

Page 22: ...osite output CDMA ACPR1 45 dBc Spurious Output 35 dBm DHU RF input signal level 20 dBm maximum composite Provides a nominal 13 dBm RF output signal at the DRU RF Reverse Path System bandwidth 25 MHz 800 MHz frequency range A and B band US Cellular 824 to 849 MHz 1900 MHz freq ranges AD band DBE band BEF band EFC band US PCS 1845 to 1870 MHz 1865 to 1890 MHz 1870 to 1895 MHz 1885 to 1910 MHz Gain 1...

Page 23: ...nt rating 85 250 Vac 2 Amp input Physical Electrical DRU Weight 1 5 lbs 708 g RF connection SMA Female 800 MHz antenna types Ceiling mount omni directional 70º directional panel 90º directional panel Ceiling mount hallway 2 5 dBi gain 8 dBi gain 7 5 dBi gain 4 dBi gain 1900 MHz antenna types Ceiling mount omni directional 90º directional panel Ceiling mount hallway 2 5 dBi gain 7 5 dBi gain 4 dBi ...

Page 24: ...y item that provides adjustable gain or attenuation in both the RF forward and reverse path The level of the RF output signal from the BTS will vary depending on the type of BTS Therefore it will generally be necessary to add some gain or some attenuation to the forward path downlink signal to provide the recommended composite maximum RF input signal level at the DHU which is 20 dBm When the level...

Page 25: ...gnal at the DHU is 20 dBm the level of the RF output signal at the DRU is 13 dBm which is the maximum allowed In the reverse path the required RF output signal level to the donor antenna will vary depending on the distance from the BTS When the level of the reverse path uplink signal at the DRU is at the recommended composite maximum level of 40 dBm the level of the RF output signal from the DHU i...

Page 26: ...ols connectors and indicators are mounted on the front panel Route all cables to the front panel for connection Use the cable retainers provided on the cable management tray to secure the fiber optic DC power and external alarm system cables The maximum recommended ambient temperature for the DHU and DEU is 50º C 122º F Allow sufficient air circulation or space between each unit when installed in ...

Page 27: ...utlet The DRU has a current rating of 350 mA at 48 Vdc input If the DRU will be powered by the DHU or DEU the power cable must be fabricated on site by the installer Use category 3 or 5 twisted pair cable as the power supply cable when the DRU is powered by the DHU or DEU The maximum recommended length of the power cable is 500 meters If the DRU will be located more than 500 meters from the DHU or...

Page 28: ...link may be up to 750 meters 2461 ft in length If 62 5 micron cable is used the optical link may be up to 500 meters 1 641 ft in length A diagram of the optical connections is shown in Figure 11 TX RX TX RX TX RX TX RX TX RX TX RX PORTS 1 6 PORTS 1 6 PORTS 1 6 FIBER PORT FIBER PORT HOST PORT FORWARD PATH REVERSE PATH FORWARD PATH REVERSE PATH FORWARD PATH REVERSE PATH DIGITAL REMOTE UNIT DIGITAL R...

Page 29: ...optical ports at the DHU which expands that port to six ports If still more optical ports are required then a second DEU may be connected to the DHU or a second DEU may be connected to the first DEU The ability to cascade DEU s in parallel or in series provides unlimited flexibility It is physically possible to connect an unlimited number DRUs to the DHU through the installation of DEUs The total ...

Page 30: ... 16237 C Figure 12 800 MHz DRU Antenna Options The DRU antennas are designed for unobtrusive mounting within an office environment Each type of antenna provides a specific coverage pattern in order to accommodate the shape of the area where coverage is required The ceiling mount omni directional antenna is designed to mount in the center of the coverage area The directional panel antenna is design...

Page 31: ...ng minor and major alarms to an external alarm system A minor alarm is defined as a high temperature condition A major alarm is defined as any fault condition except high temperature Connections to the alarm contacts are provided through a screw type terminal strip Use category 3 or 5 cable for the alarm wires If an external alarm system is not in use no alarm connections are required 2 9 Frequenc...

Page 32: ...n such as extreme cellular system issues blocking severe interference site problems etc building issues power issues or safety issues site should not present any hazards or conditions that would make operation of the equipment unsafe Analyze the RF Situation Determine how the system RF link to the outside world will be provided Will it be a direct feed from a BTS microcell or an over the air conne...

Page 33: ...ut signal at the desired level Determine the location of the DHU and its RF and AC power sources Complete the following steps to make this determination 1 Determine where and how the DHU will be mounted 2 Determine the location of the DHU AC power source 3 Determine the RF source LIU with BTS or RIU with BTS through donor antenna for the DHU 4 If an LIU connection with the BTS is required determin...

Page 34: ...bed in the Digital Expansion Unit Installation Instructions ADCP 75 111 Test call quality and range of each DRU as needed 5 Check powering and alarm functions of entire system per Digivance ICS specifications 2 11 4 Phase Four Performance Evaluation Complete the following to evaluate the performance of the Digivance ICS 1 Evaluate the forward path downlink and reverse path uplink RF signal levels ...

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