SC‐DAS Installation and Operation Manual Document Reference: Version: V3.0 Document Status: Release 3 Issue Date: January.
REVISION HISTORY Version Issue Date V 1.0 April. 11, 2011 V 2.0 Dec. 08,2011 V 3.0 Jan. 06,2012 No. of Pages Initials Details of Revision Changes Original Add Sprint band Technical Support SOLiD serial numbers must be available to authorize technical support and/or to establish a return authorization for defective units. The serial numbers are located on the back of the unit, as well as on the box in which they were delivered.
Contents Section1 Safety & Certification Notice ...................................................................... 14 Section2 System Overview ....................................................................................... 17 2.1 General overview ............................................................................................ 18 2.2 System overview............................................................................................. 20 Section3 3.
.4.1 ROU specifications.................................................................................... 60 4.4.2 ROU block diagram ................................................................................... 61 4.4.2.1 Combination of MRU 1900PCS+850C/ARU 700LTE+AWS‐1 ........................... 61 4.4.2.2 Combination of MRU 1900PCS/ARU 900I+800I ........................................... 62 4.4.3 ROU assemblies ...........................................................................
.4.1 OEU chassis installation................................................................................. 113 5.4.2 OEU Power Cabling ....................................................................................... 113 5.4.3 OEU Optic Cabling......................................................................................... 115 5.4.4 DOU installation with an OEU ........................................................................ 116 5.4.5 OEU Power Consumption .......................
Figures Figure 2.1 – Basic system topology supporting SISO configuration ..................... 20 Figure 2.2 – Basic system topology supporting MIMO configuration .................. 21 Figure 2.3 – Expansion system topology supporting SISO configuration............. 22 Figure 2.4 – Expansion system topology supporting MIMO configuration .......... 23 Figure 4.1 – BIU front and side views................................................................. 31 Figure 4.2 – BIU block diagram ......................
Figure 4.18 – BIU/ODU Interface rear view ........................................................ 50 Figure 4.19 – BIU/ODU interface details............................................................. 50 Figure 4.20 – OEU at a glance ........................................................................... 51 Figure 4.21 – OEU block diagram....................................................................... 52 Figure 4.22 – OEU internal view ...........................................................
Figure 5.1 – RACK Installation ........................................................................... 77 Figure 5.2 – Power interface diagrm ................................................................. 79 Figure 5.3 – PSU LED indicator information ....................................................... 81 Figure 5.4 – BIU RF interface diagram ............................................................... 84 Figure 5.5 – BTS /BIU connections.........................................................
Figure 5.25 – ROU LED indicator information................................................... 110 Figure 5.26 – OEU Power interface diagram .................................................... 114 Figure 5.27 – Optical cable with SC/ACP Type Connectors.............................. 116 Figure 5.28 – OEU with DOUs inserted ............................................................ 116 Figure 6.1 – SC‐DAS Link budget for the BIU .................................................... 120 Figure 6.
Section1 Safety & Certification Notice Confidential & Proprietary 10/122 SC‐DAS
“Only qualified personnel are allowed to handle this unit. Read and obey all the warning labels attached in this user manual” Any personnel involved in installation, operation or service of the SOLiD Technology repeaters must understand and obey the following: ‐ Obey all general and regional installation and safety regulations relating to work on high voltage installations, as well as regulations covering correct use of tools and personal protective equipment.
Section2 System Overview 2.1 General overview 2.
2.1 General overview SC‐DAS platform is a coverage system for in‐building services delivering seamless, high quality voice and data As a distributed antenna system, it provides analog and digital phone services in multiple bands through one antenna. The system covers public and private venues such as: z Shopping malls z Hotels z Campus areas z Airports z Clinics z Subways z Multi‐use stadiums, convention centers, etc.
z Support multi‐operator in a band(Max. 2 operator) Low OPEX / CAPEX Compact design Upgradable design Easy installation and maintenance Adopts auto ID scheme The SC‐DAS platform will serve two primary segments; first as a carrier deployed coverage enhancement product for their specific frequencies and second as a low cost, public safety / single carrier product.
2.2 System overview SC‐DAS comprises the components listed below. The base system consists of a BIU (BTS Interfcace Unit), an ODU (Optic distribution Unit) and a ROU (Remote Optic Unit). For use with multiple ROU’s, it has OEU (Optic Expansion Unit). The BIU has two layer which support both SISO and MIMO configuration using separate optical fiber cable. Fig2.1 shows basic system topology for SISO Figure 2.
Figure 2.2 – Basic system topology supporting MIMO configuration As shown at Fig.’s 2.1 and 2.2, one strand of fiber is needed for SISO configuration but two strands are needed for MIMO cofiguration when connected with an ROU. Applications requiring up to 32ROU’s for SISO are possible with one BIU. Each SISO ROU will require an additional strand of fiber and an additional 32 ROU’s can be added to the same system for MIMO applications. MIMO requires 2 strands of fiber per ROU as well as MIMO specific ODU’s.
To reduce number of optical cables between multi‐building applications, we can utilize the OEU(Optical Expansion Unit) Fig 2.3 shows expansion system topology supporting SISO configuration using OEUs Figure 2.3 – Expansion system topology supporting SISO configuration Figure 2.
Fig 2.4 shows expansion system topology supporting MIMO configuration using OEU Section3 System Specifications 3.1 System specifications 3.1.1 Physical Specifications 3.1.2 Optic wavelength and Laser power 3.1.3 Environmental specifications 3.1.4 Available frequency bands 3.1.
3.1 System specifications 3.1.
3.1.2 Optical wavelength and Laser power Parameter ODU OEU ROU West optic TX: 1310nm TX: 1550nm, RX: 1550nm East optic RX: 1310nm TX: 1550nm Optical Wavelength RX: 1310nm TX: 1310nm, RX: 1550nm 1dBm±1dBm to ROU Output power 1.5dBm±1dBm to ROU,OEU 7dBm±1dBm to ODU 7dBm±1dBm to ODU Return loss 3.1.3 <45dB <45dB Environmental specifications Parameter BIU, ODU, OEU Operating Temperature ‐10 Operating Humidity, non condensing ‐ 3.1.
3.1.5 Band Specifications SC‐DAS platform allows many band combinations as well as different output power levels within the band depending on the combination.
Section4 System Configuration and Functions 4.1 BIU (BTS Interface Unit) 4.2 ODU (Optic distribution Unit) 4.3 OEU (Optic Expansion Unit 4.
4.1 BIU (BTS Interface Unit) The BIU receives signals from the BTS or BDA through coaxial cable and transmits to four ODUs (Optic Distribution Unit).and The BIU separates RX signals received from ODUs according to their frequency band. Figure 4.1 – BIU front and side views 4.1.1 BIU Specifications Item Spec. Remark Size 482.6(19”) x 221.
4.1.2 BIU block diagram Figure 4.2 – BIU block diagram 4.1.3 BIU assemblies MCDU’s MDBU #1 MDBU #2 MPSU MDBU #3 SISO Side MDBU #4 MIMO Side Figure 4.
No.
No Unit naming In/out RF Port Description TX RX 1 1900P+850C Dual Band 4 Port 4 Port 2 700LTE+AWS‐1 Dual Band 4 Port 4 Port 3 1900P Single Band 2 Port 2 Port 4 900I+800I Dual Band 4 Port 4 Port 5 1900P+AWS‐1 Dual Band 4 Port 4 Port 6 700PS+800PS On Dual the Band loadmap 4 Port 4 Port 7 900I Dual Band 2 Port 2 Port Figure 4.
Figure 4.5 – MCDU at a glance VHF+UHF frequency band includes the following: for use in future No 1 Unit naming VHF+UHF In/out RF Port Description Dual Band TX RX 1 Port 1 Port 3) Main Central Processor Unit (MCPU) MCPU can inquire and control the state of the modules that are installed in the BIU. This unit can inquire and control the state of up to four ODUs. Through communication, it also can inquire and control ROUs that are connected.
Figure 4.6 – MCPU at a glance In the Main Central Processor Unit, a lithium battery is installed for RTC (Real Time Control) function. CAUTION RISK OF EXPLOSION MAY OCCUR IF BATTERY IS REPLACED BY AN INCORRECT TYPE DIPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS [INSTRUCTION] The equipment and accessories including inner lithium battery are to be disposed of safely after the life span of them according to the national regulation.
4) Main Power Supply Unit (MPSU) The MPSU takes a ‐48V input and outputs +6V and +9V DC power. On the front panel, this unit has an output test port and it also has DC ALM LED Indicator to show faulty output. Figure 4.7 – MPSU at a glance 4.1.
Figure 4.8 – BIU front panel view Item 1. Alarm LED & Reset Description Communication state with devices, alarm status of the system and reset switch USB port for communication and diagnosis of devices through PC/laptop 2. DEBUG (USB B) This equipment isfor indoor use only and all the communication wirings are limited to indoor use as well. 3. NMS(Ethernet port) Ethernet port for upper network The supporting network mode is UDP protocol 4. MDBU LED 5.
2) Rear panel 3 4 5 6 8 10 MIMO SIDE 2 1 9 SISO SIDE 7 11 Figure 4.9 – Rear panel view Item Description 1. DC Input Port Input terminal for DC ‐48V 2. External ALM Port Input/output terminal for dry contact 3. GND Port System ground terminal 4. AUX I/O Port Reserved Port for future uses 5. MIMO ODU I/O Port RF signal interface terminal for ODU 6. MIMO ODU signal Port Power and signal interface terminal for ODU 7. MIMO BTS/BDA I/O Port Input/output interface terminal of BTS/BDA 8.
4.2 ODU (Optic distribution Unit) ODU receives TX RF signals from upper BIU and converts them into optical signals. The optical signals are sent to ROU through optical cables. This unit converts optical signals from ROU into RF signals and sends the converted signals to BIU. For each shelf of the ODU, up to two DOUs (Donor Optic Unit) can be installed in it. One DOU is supported with four optical ports. Therefore, one ODU can be connected with eight ROUs.
4.2.2 ODU block diagram Figure 4.11 – ODU block diagram 4.2.3 ODU assemblies Figure 4.
No. Unit Description Remark Donor Optic Unit 1 DOU Converts TX RF signals into optical signals; Converts RX optical signals into RF signals; Max 2 ea. Provides up to four optical ports per DOU 2Way Divider 2 2W Divides TX RF signals into two; Combines two RX RF signals into one 3 DU 4 Shelf 5 Accessories 4.2.
Figure 4.13 – DOU at a glance 2) 2Way Divider (2W) The 2 way divider is equipped with two 2‐way splitters in a single housing and the splitters work for TX/RX signals, respectively. Designed in broadband type, the divider combines and splits signals from/to the BIU Figure 4.14 – 2Way Divider at a glance 4.2.5 ODU front/rear panel overview 1) Front panel Figure 4.
Item 1,2 Description LED indicator to check for faulty DOU module. 2) Rear panel Figure 4.16 – ODU Rear panel view Item Description 1. Optic Port SC/APC optical connector terminal; use one optical cable per ROU. 2. DC I/O Port Terminal for power and state values 3. RX RF Port RX RF signal interface terminal 4.
4.2.6 ODU Interface with BIU SISO Configuration MIMO Configuration Figure 4.17 BIU/ODU interface For SISO configuration, up to four ODUs can be stacked. above the top of the BIU. For MIMO configuaration, up to eight ODUs can be stacked above/below the BIU. In this case, it is recommended to leave a 1RU space between BIU and the ODUs otherwise heat from BIU may degrade the performance of the ODUs, Figure 4.
As shown in the figure below, connect one coaxial cable for TX and another coaxial cable for RX with corresponding ports at the rear of BIU. For power supply and communication, connect 25Pin D‐Sub Connector cable to the corresponding port. Figure 4.
4.3 OEU (Optic Expansion Unit) OEU is mainly used to remotely deliver signals for Campus clusters. At the upper part, this unit combines with ODU and receives TX optical signals to convert them into RF signals. Then, it regenerates the signals to secure SNR and converts them into optical signals. The signals are sent to ROU through optical cables.
4.3.2 OEU block diagram Figure 4.21 – OEU block diagram 4.3.3 OEU assemblies Figure 4.
No. Unit Description Remark Donor Optic Unit 1 DOU Convert TX RF signals into optical signals; Convert RX optical signals into RF signals; Max 2 ea.
2) Expansion Wavelength Division Multiplexer(EWDM) EWDM module handles the optical to RF conversion of TX signals as well as the RF to optical conversion of RX signals. This multiplexer communicates with the BIU using the built in FSK modem. It also has an ATT to compensate for optical cable loss between ODUs. Finally , it has internal WDM so it needs only one optical cable to work with an ROU. Figure 4.
Figure 4.26 – ERFM at a glance 5) Expansion Power Supply Unit(EPSU) As DC/DC Converter, the EPSU receives ‐48VDC input and provides +9V and +6V of DC power required for OEU. Figure 4.
4.3.5 1) OEU front/rear panel overview Front panel Figure 4.28 – OEU front panel view Item Description 1.EWDM LED LED indicator to check EWDM state to see if it is abnormal 2.DOU LED LED indicator to check DOU module state to see if it is abnormal 3.System LED and Reset Communication state with devices, alarm status of the system and reset switch USB port for communication and diagnosis of devices through PC/laptop. 4.
4.4 ROU (Remote Optic Unit) The ROU consists of two units: the MRU(Main Remote Unit) and the ARU(Add on Remote Unit). The ROU is considered the combination of MRU and ARU. The MRU receives TX optical signals from the ODU or the OEU and converts them into RF signals. The converted RF signals are amplified through a High Power Amp in a corresponding RU, combined with the Multiplexer and transmitted out the antenna port.
4.4.1 ROU specifications Item Band Band combination Size (W x H x D) MRU 1900P+850C Combination1 ARU 700LTE+AWS‐1 Band MRU 1900P Combination2 ARU 900I+800I Band To be developed 200 x 300 x 140 mm Weight Power consumption 6.6kg 50W 6.8kg 40W 6.5kg 45W 6.
4.4.2 ROU block diagram 4.4.2.
4.4.3 4.4.3.1 ROU assemblies Combination of MRU 1900PCS+850C/ARU 700LTE+AWS‐1 (a) MRU 1900PCS+850C (b) ARU 700LTE+AWS‐1 Figure 4.
4.4.3.2 Combination of MRU 1900PCS/ARU 900I+800I OPTIC Port BPF MRFM R CPU R PSU R - OPTIC (a) MRU 1900PCS BPF ARFM R CPU R PSU (b) ARU 900I+800I Figure 4.
No.
4.4.4 Sub Assembly description 1) Main RF Module/Add on RF Module (MRFM/ARFM)+BPF When receiving TX signals from each band through R‐Opt, MRFM/AFRM filters the signals and amplifies them with the High Power Ampifier. The unit also filters RX signals received through the antenna port and amplifies them as low noise to send the signals to R‐Opt. In the unit, there is an ATT to adjust gain.
Figure 4.35 – PSU at a glance 3) Remote Optic(R‐OPT) The Remote Optic performs the optical to RF signal conversion as well as the RF to optical conversion. With an FSK modem in it, the unit communicates with the other devices. It also has an internal ATT to compensate for optical cable loss. The optical wavelength for TX path is 1310nmand 1550nm for the RX path.
4.4.5 Bottom of ROU 1) Functions (a) MRU (b) ARU Figure 4.36 – ROU Bottom view Item 1. VHF/UHF ARU Port 2.LED PANEL 3. Power Port 4.ARU/MRU Port 5.
(a)AC/DC (b)DC/DC Figure 4.
4.4.6 4.4.6.1 Top of ROU Combination of MRU1900PCS+850C/ARU700LTE+AWS‐1 RF PORT RF PORT ANT Port Optic Port (a)MRU (b)ARU Figure 4.38 – ROU Top View for MRU 1900P+850C and ARU 700LTE+AWS‐1 4.4.6.2 Combination of MRU1900PCS+850C/ARU700LTE+AWS‐1 RF PORT ANT Port RF PORT Optic Port (a)MRU (b)ARU Figure 4.
Item 1. RF Port 2. ANT Port 3.
Section5 System Installation & Operation 5.1 BIU Installation 5.2 ODU Installation 5.3 ROU Installation 5.
This chapter describes how to install each unit and corresponding fiber cables, along with power cabling method. In detail, the chapter describes how to install shelves or enclosures of each unit, Power Cabling method , Optic Cabling and RF Interface. Furthermore, by showing power consumption of modules installed in each unit, a the Power Cabling budget is easily determined. Last, it describes the quantity of components of modules to be installed in each unit along with an expansion method. 5.
MCPU to query and control state of each module and a Power Cable to supply power from external rectifiers. In addition, ther are slots for the MDBUs which provide services for desired band (Optional) and the MCDU to combine and divide TX/RX signals for each SISO and MIMO slots 5.1.2 BIU Power Cabling BIU requires ‐48VDC input power. Connect DC cable from the power supply to the Terminal Block seen at the rear of BIU.
Note that BIU does not operate if the "+" terminal and the "–" terminal of the ‐48V power are reversed. When you connect ‐48V power to the BIU, use the ON/OFF switch of the MPSU located at the front of BIU to check the power.
Power Switch LED Description Abnormal, Not supply Power ‐48Vdc ON Normal supply power ‐48Vdc O DC ALM Normal Status Failure of output Power I ON Normal Status DC ALM Figure 5.
5.1.3 BIU/RF interface The BIU can be connected with a Bi‐Directional Amplifier or Base Station Tranceiver. To connect the BIU with a BDA, you need to use a duplexer or a circulator to separate TX/RX signals from each other. The BIU can feed external TX/RX signals from the Back Plane. Using a dual band MDBU, the BIU can easily accomodate all frequency bands. As seen in the table below, the MDBU is divided into Single and Dual Bandmodules and each unit can be connected with two carrier signals per band.
MDBU 700PS:2Port Port#2 700PS TX(763~775MHz) 700PS RX(793~805MHz) 800PS:2Port Port#3 800PS TX(851~869MHz) 800PS RX(806~869MHz) Port#4 800PS TX(851~869MHz) 800PS RX(806~869MHz) 900I Single Band Port#1 900I TX(929~941MHz) 900I RX(896~902MHz) MDBU 900I:2Port Port#2 900I TX(929~941MHz) 900I RX(896~902MHz) VHF VHF Tx(136~174MHz) Rx(136~174MHz) UHF UHF Tx(380~512MHz) Rx(380~512MHz) 7 VHF+UHF Dual Band 8 Port#1 MCDU VHF+UHF : 1Port At the rear of BIU, Tx input and Rx output port
ports. Figure 5.5 – BTS /BIU connections Using a spectrum analyzer or power meter, you need to check signals sent from BTS TX. If the signals exceed input range (‐20dBm~+10dBm), you can connect an attenuator between the BTS and BIU to bring the signal level into range. BIU interface with Bi‐Directional Amplifier Since the BIU is Simplex format; you need to un‐duplex the BDA signal to properly connect it to the BIU.
Figure 5.7 –BDA Interface using Duplexer The BIU will work with the BDA in either of the methods above. TX signal level from the BDA must be verified that it is within range of the BIU.
range, before connecting the ports. 5.1.4 MDBU installation MDBU is designed to be inserted into any slot. A BIU can be equipped with a total of four MDBUs. If only one MDBU is inserted, you need to insert BLANK cards into the other slots. If you do not terminate input and output ports of the MCDU, which combines TX signals and divides RX signals, it will cause out of band spurious signals.
into the MDBU slots. When an MDBU is inserted into the BIU, LEDs at the front panel will show the following information: LED Description Power is not supplied. ON Power is supplied. Normal Operation ALM Abnormal Operation Figure 5.
MONITOR SMA port seen at the front panel of the MDBU allows you to check the current level of TX input and RX output signals in service without affecting main signals. TX MON is ‐20dB below TX Input power and RX MON is ‐20dB below RX Output power as well. 5.1.5 ODU Interface The BIU supports up to four ODUs per platform. At the rear of BIU, eight RF input and output ports for the ODUs as well as four power ports for power supply and communication are provided.
Confidential & Proprietary ODU 3 #3 MIMO_ODU#3 ODU 4 #4 MIMO_ODU#4 69/122 SC‐DAS
Figure 5.10 –Cabling interface diagram between BIU and ODU For unused RF Ports for ODU expansion, make sure to terminate them using SMA Term.
When installing an ODU above the BIU, it is recommended to leave at least 1RU of space between the two. Heat from BIU rises and could damage the ODU.
5.1.6 BIU power consumption The table below shows power consumption of the BIU: Part Unit Consumption Power Remark Shelf Common Part 4.8 W MCPU MPSU MCDU MDBU ‐ 2.4W 1900P+850C 16W 700LTE+AWS‐1 16W 1900P 12W 900I+800I 16W 1900P+AWS‐1 ‐ 700PS+800PS On the loadmap ‐ ‐ 900I The BIU supplies power for ODU. When you want to calculate total power consumption of the BIU, you need to add power consumption of the ODU to the total value.
5.2 ODU Installation ODU should be, in any case, put on the top of BIU. This unit gets required power and RF signals from BIU. The following table shows components of ODU: No. Unit Common Part Optional Part 5.2.1 Description Remark Shelf Including Main Board, 19”,1U 1EA RF Cable SMA(F) to SMA(F), 400mm 2EA Signal Cable 3Row(26P_F) to 3Row(26P_M),650mm 1EA DOU Optical Module with 4 Optic Port Up to 2EA to be inserted ODU Shelf Installation The ODU chassis is 1RU in height and 19” wide.
Figure 5.11 –SC/APC fiber termination For optical adaptor, SC/APC type should be used. To preventcontamination of the fiber end, it should be covered with a cap when not installed. The SC/APC connectors should be cleaned with alcohol prior to installation. 5.2.4 DOU installation Up to two DOUs can be installed in an ODU chassis. The DOU module is a Plug in Play type. When you insert a DOU in the ODU, insert the unit into the left DOU1 slot first. The slot number is silk screened at the left.
When you insert DOU into ODU, insert the unit into the left DOU1 slot first. Insert a BLANK UNIT in the unused slot. 5.2.5 ODU Power consumption The ODU gets power from the BIU. One ODU can be equipped with up to two DOUs. Depending on how many DOUs are installed, power consumption varies.
ODU_8 Confidential & Proprietary DOU 2 EA 28W 76/122 SC‐DAS
5.3 5.3.1 ROU Installation ROU Enclosure installation The ROU enclosure has two options. One meets NEMA4 standard and the other is not waterproof or dirtproof. The ROU can be mounted on a Wall easily. Rack mounting is also possibleusing special frame. There are 3 different types and they will be explained later in this chapter. The ROU consists of anMRU and anARU. Their dimensions are thesame. The following shows the dimension of the mounting holes for the Wall Mount Bracket. Figure 5.
Screw the M6 Wrench Bolts by half at each side of the Heatsink enclosure. Figure 5.14 – ROU installation procedure side by side Place the enclosure with the M6 Bolt on the mounting groove and mount the M6 Wrench Bolts into the remaining mounting holes. In this case, you will use 4 M6 Wrench Bolts.
Figure 5.15 – ROU installation diagram side by side For connecting cables between MRU and ARU easily, the MRU should install on left side of ARU. Type2 : stacked installation If space prohibits the MRU and ARU from being mounted side by side, the units can be installed in a stacked configuration. Stacking the unit requires a special baracket for stacked installation First, install the MRU on the wall , then install the bracket for stacked installation on the MRU. Finally install the ARU on the bracket.
The following shows dimension of the mounting point for the stacked bracket. Figure 5.
ROU Rack Mount Installation There are two ways to install rack mount. One is to install ROUs on the rack vertically: the other is to install ROUs on the rack horizontally Type1 : Vertical installation on the rack For vertcal installation, a vertical bracket is needed. First, install bracket for vertical installation on the rack Second, mount MRU on the left side of the installed bracket Third, mount ARU on the right side of the installed bracket Completed installation diagram is as follows Figure 5.
Figure 5.19 – ROU installation diagram for vertical rack Type2 : Horizontal installation on the rack For Horizontal installation, horizontal bracket is needed.
Figure 5.20 – ROU installation procedure for horizontal rack The following shows dimensions of the mounting point for horizontal installation Figure 5.
ROU components The ROU has the following components: No. Unit Description Enclosure MRU Power Cable Enclosure Power Cable ARU RF cable for optical RF cable for antenna 5.3.
5.3.3 Optical Cabling The MRU makes the optical‐RF conversion of TX signals from upper the ODU and OEU as well as the RF‐ optical conversion of RX signals. The MRU has one optical module in it. As WDM is used in the R_OPT module, two separate wavelengths (TX:1310nm, RX:1550nm) can be sent/received with one fiber strand at the same time. The MRU has SC/APC connectors. To prevent the fiber interface from being marred with dirt, it should be covered with a cap when not installed.
Figure 5.24 – ROU GND Port view - Take off the GND terminal port from the enclosure and connect to the ground cable. Then reconnect it to the enclosure - The opposite end of the ground cable should connect to the communication GND of building - 5.3.5 - The ground lug is designed meeting the SQ5.5 standard Coaxial cable and Antenna Connection The coaxial cables which are connected to DAS connect to antenna port of the ROU.
5.3.6 LED explanation on ROU The ROU has an LED panel at the bottom of ROU. The LED indicator is explained below Description LED Power is not supplied ON Power is supplied. Normal Operation ALM Abnormal Operation R‐OPT is normal operation OPT R‐OPT is abnormal Operation TXD Flashing when data send to upper unit Flashing when data receive from upper RXD unit Figure 5.25 – ROU LED indicator information 5.3.
5.3.8 Cable connection between MRU and ARU MRU has only antenna port, ARU output port should be connected with MRU. MRU transmit all frequency band into one antenna after combining with ARU signal Figure below shows connection diagram between MRU and ARU ① ② ② ③ ③ ⑤ ⑤ ④ ④ (a)MRU1900P+850C/ARU700LTE/AWS‐1 (b)MRU1900P/ARU900I/800I Figure 5.
5.4 OEU Installation OEU is used to expand the ROU in a multi building environment. The OEU is located at a Remote Closet. As it can be equipped with up to two DOUs, you can expand a total of eight ROUs. 5.4.1 OEU chassis installation The OEU chassis is 2RU in sizeand can be inserted into a 19” Standard Rack. The OEU is in a Remote Closet, providing optical ports for the ROU. The following table shows power consumption of OEU: No. Unit Common Part Optional Part 5.4.
Figure 5.26 – OEU Power interface diagram Note that OEU does not operate if the “+” terminal and the “–“ terminal of the ‐48V power supply are reversed.
5.4.3 OEU Optic Cabling The OEU is connected with the upper ODU. With the DOU inserted in it, the unit is connected with theROU. Having EWDM built in the OEU, it makes the RF‐optical conversion of TX signals from ODU as well as the optical‐RF conversion of RX signals. In addition, the OEU can be equipped with up to two DOUs. One DOU supports four optical ports and one optical port can be connected with the ROU.
5.4.4 DOU installation with an OEU Up to two DOUs can be inserted into an OEU chassis. The DOU module is a Plug in Play type. When you insert the DOU into the OEU, insert it into the top DOU 1 slot first. Slot numbers are silkscreened on the left. The following figure shows installation diagram of an OEU with one DOU inserted in it. The following figure shows installation diagram of an OEU with two DOUs inserted in it. Figure 5.
BLANK UNIT into them. 5.4.5 OEU Power Consumption The OEU has a ‐48V DC Power supply in it. The OEU can be equipped with up to two DOUs. Depending on the number of DOUs, power consumption will vary.
Section6 Operation 6.1 BIU Operation 6.2 ROU Operation 6.
This chapter describes operation of SC‐DAS. It deals with procedures and operations for normal system operation after installation. It also describes operations per unit and interworking methods. 6.1 BIU Overview 6.1.1 BIU Figure 6.1 – SC‐DAS Link budget for the BIU 6.1.2 BIU TX parameters The TX level to be sent to the BIU should be in the range of ‐20dBm to + 10dBm.
Checking the status of the system’s LED Indicator After turning on the switch of the power supply in BIU, check information on each module’s LED of the system. The table below shows normal/abnormal cases depending on the status of each module’s LED. LED information Unit LED ON MDBU Indicates Green: MDBU is normally power‐supplied. Green: MDBU is normal. ALM Red: MDBU is abnormal; check the alarm through RS‐232C. MCPU ON Green: MCPU is normally power‐supplied.
Figure 6.2 –MDBU information assigned at theBIU Check if the MDBU is inserted into a corresponding slot of theBIU. The ID screen shows the following: A. MDBU ID: Show MDBU ID inserted into slot B. Not Insert: This status value appears when MDBU has not been set. C. Link Fail: This status value appears when MDBU has been set but it fails to communicate with modules. SC‐DAS is classfied according to path that is as SISO and MIMO. Each path can have up to two MDBUs.
. Make sure to turn OFF unused ports. The table below shows output power vs number of ports MDBU Band Output level (Composite power) No.
UHF 24dBm‐10*LOG(N) 1 Check if the level of TX IN POWER is the same as the value measured with spectrum analyzer(Within ±3dB). Use TX IN AGC function and automatically set internal ATT depending on input level. ATT is automatically set based on ‐20dBm of input . The table below shows TX IN ATT depending on TX IN POWER. For manual setting, you can set ATT depending on input according to the table.
Figure 6.4 –MDBU name assignment at theBIU This naming is reflected at the tree as follows Figure 6.5 –MDBU name assignment at the tree Use various upper/lower limits.
6.1.3 BIU RX parameters For RX operation at BIU, you need to set RX gain to prevent the BTS or BDA from being affected. There is an ATT setting window to let you adjust gain per band and port. Total RX gain is 50dB per band. To adjust a desired gain, you need to do the following. For a desired RX gain, you can set it as 50dB‐RX ATT. Use the terminal and check if TX Adjust value and Ec/Io value is appropriate. To prevent high level signals from entering the BTS or BDA, keep ALC mode activated (ON).
6.1.4 BIU Logic Sequence Diagram The BIU controls the overall system, working as as the head end unit of any system. The BIU connects with units such as ODU, OEU and ROU. The tree hierarchy automatically displays the components connected to the system and communicate with lower units while collecting the status of the units. The menu below shows topology for overall units. Basic topology for SC‐DAS Configuration of BIU‐ODU‐ROU Figure 6.
Expansion topology for SC‐DAS Configuration of BIU‐ODU‐OEU‐ROU Figure 6.8 –Configuration of BIU‐ODU‐ROU for expansion topology Using an OEU allows you to expand for additional ROUs as shown in the tree structures. Looking at the above tree hierarchy, an OEU can be connected with ODU1and2 only and regarding the optical port of a DOU, the OEU can only connect to the fourth optical port. If you try to connect the OEU ports 1 thru 3 of the DOU, the BIU won’t communicate with it.
6.1.5 Interaction with the BIU The BIU can be equipped with up to four ODUs per path. One ODU can have two DOUs in it. For information on insertion/deletion ofthe DOU in the ODU, look at the main window of the BIU as shown below Figure 6.9 –DOU assignment at the BIU When you select the ODU screen from the left TREE panel, you can see the DOU 1 or DOU 2 menu actiavted depending on whether DOU has been inserted.
The level of DOU’s Laser didoe is typically +1.5±1dBm. DOUs have various alarm such as LD Power alarm, Overload Alarm and PD alarms. The level of Laser diode received from ROU/OEU is +7dBm±0.5dB. The level of Photo diode will be displayed with losses related to the length of optical cables and insertion loss of optical connectors. In general, the level of optical PD POWER should be +6dBm to +2dBm±1.5dB. Furthermore, the ODU has the function of automatically compensating for optical cable loss.
6.2.1 ROU Operation The ROU is a one‐body enclosure type and is located at a remote closet in the building. It can be installed on a wall or into a rack. Basically, only one antenna port is provided. To install multiple antennas, you need dividers and/or couplers. The ROU can work with a DC Feeder and an Optic Cable Feeder. To power the ROU, a power supply of either AC‐DC or DC‐DC can be selected depending on the application. For upper level, the ROU can be connected with the ODU and OEU.
the ROU sends requested status value to the BIU. During reception, RXD LED blinks. During tramsmission, , TXD LED blinks. At this time, you need to see if whether to use a corresponding ROU is checked on When theARU is connected with the MRU, check if TXD and RXD LEDs at ARU blink.
ROU Optic Comp Operation The ROU has the function of automatically compensating for optical loss. It can do the work for up to 5dBo of optical loss. Set “TX OPTIC COMP” of the MRU to "ON." Optical compensation of ROU can not be made without communication to the ODU or OEU. For 1dBo of optical loss, basic TX OPTIC ATT is 1dB; for 5dBo of optical loss, TX OPTIC ATT is 4dB. OPTIC COMP works only one time before it stays dormant. The figure below shows a screen for OPTIC Information in ROU GUI.
If ROU does not make optical compensation, there will be erors in the system link budget . It can cause lower output levels or make Spurious Emissions detrimental to the system. ROU Setting The MRU can be interfaced with two RUs. One is an ARU which is provided with an extra carrier band. The other is a VHF+UHF RU which is provided with public safety service required in the building code.
Figure 6.13 –ROU information assignment By clicking the main menu which is MRU,ARU and VHF+UHF, you can query and control these units Set HPA of a corresponding RDU as “ON.” Use TX OUTPUT AGS function and set it as a desired output level. Figure 6.
900I 26dBm 0 ~ 26dBm ARU900I+800I 800I 26dBm 0 ~ 26dBm ARU900I+800I AGS function enables you to adjust output power as you like. While the AGS function is being executed, the Result window shows "Processing" and then a result valueis displayed. There are three types of results as follows: A. Success: The AGS function is normally completed. B. Not Opterate OPTIC Comp: Optic Comp is not executed. C. Lack of ATT: There is no attenuation available. Set the upper/lower limits.
, The ROU has unique serial number and also a unique softkey.
6.3 OEU Operation The figure below shows the system link level of SC‐DAS (BIU‐ODU‐OEU‐ROU). This section describes OEU‐related information. The OEU receives various signals through optical modules. The optical signals are converted to RF signals and the RF signal are amplified to moderate signal levels. To transmit to ROU, the signal is converted to an optical signal Figure 6.16 –SC‐DAS Link Budget for OEU 6.3.
After turning on the switch of the power supply in the OEU, check information on each module's LED of the system. The table below shows normal/abnormal cases depending on the status of each module's LED.
Red :OEU system abnormal (alarm) Checking Communication LED of OEU Step 1 : checking whether there is communication with the BIU(ODU) Check if TXD1 and RXD2 LEDs in OEU front LED make communication. Receiving FSK signals from BIU, the OEU sends requested status value to BIU. During reception, RXD1 LED flicks. During tramsmissionTXD1 LED flicks. Step 2 : Checking whether there is communication with the ROU OEU configured as a Hub. OEU has two optical ports.
Normal LD power level is typically +7dBm±1dBm, PD power is range of +1dBm to ‐5dBm. The results value is same to the ROU’s optical loss compensation(see the ROU more detail) Like the ROU, the OEU performs optical loss compensation automatically when the OEU communicates with upper ODU first. During optical compensation, the Result window shows "Processing" and then a result value is displayed. There are three types of results as follows: 1. Success: The optical compensation is normally made. 2.
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Section7 Additive functions 7.1 Shutdown function 7.2 Total power limit function 7.3 Automatic Output power setting function 7.4 Input power AGC function 7.5 Input power limit function 7.
This chapter describes additive functions of SC‐DAS 7.1 Shutdown function (TX output shutdown) The DAS has an automatic shutdown function to protect the DAS itself and the wireless network when the normal operational conditions cannot be maintained Shut down is triggered automatically when the composite power downlink output is above the values defined as average for the device for a period not to exceed 5 seconds.
7.3 Automatic Output power setting function (TX Output AGC) To provide convenience of setting output power at initial setup automatically, set output to desired level and turn‐on the AGC function. The output power is automatically set to defined level. After AGC logic is complete, logic operation results will show on the result window of the GUI. There are three types of results as follows 1. Success: The AGS function is normally completed. 2. Not Opterate OPTIC Comp: Optic Comp is not executed. 3.
‐12dBm 8dB ‐1dBm 19dB +9dBm 29dB ‐11dBm 9dB 0dBm 20dB +10dBm 30dB ‐10dBm 10dB 7.5 Input power limit function (TX Input ALC) The DAS has a TX input ALC function at the BIU to limit level when input power is increased above level by operated input AGC function Normally, there are no more than two input ports in the MDBU of the BIU For example, the 850 cellular band has two input ports to support both VzW and AT&T These two input powers may be different from each other.
Figure 7.2 –Optical loss information During optical compensation, the Result window shows "Processing" and then a result value is displayed. There are three types of results as follows: 1. Success: The optical compensation is normally competed 2. Over Optic Loss: Generated optical loss exceed 5dBo or more. 3. Communication Fail: Communication with ROU is under poor condition.
