SOLiD 19P8OI90I REPEATER User Manual

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Document ID	1628531
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Document Description	User Manual
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Document Type	User Manual
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Date Submitted	2012-01-30 00:00:00
Date Available	2012-01-30 00:00:00
Creation Date	2012-01-06 16:03:30
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Document Lastmod	2012-01-06 16:20:54
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SC‐DAS
Installation and Operation Manual
Document Reference:
Version:
V3.0
Document Status:
Release 3
Issue Date:
January. 06, 2012
Author:
Kyung Eun Han
Department:
R&D Division Team 3
Authorizing Manager:
Young shin Yeo
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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. Additional support information may be obtained by accessing
the SOLiD Tehcnology, Inc. website at www.st.co.kr or send email at sjkim@st.co.kr
This manual is produced by Global Business Division Business Team 1. Printed in Korea.
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Contents
Section1
Safety & Certification Notice ...................................................................... 14
Section2
System Overview ....................................................................................... 17
2.1
General overview ............................................................................................ 18
2.2 System overview............................................................................................. 20
Section3
3.1
System Specifications ................................................................................ 23
System specifications...................................................................................... 24
3.1.1
Physical Specifications .............................................................................. 24
3.1.2
Optical wavelength and Laser power......................................................... 27
3.1.3
Environmental specifications .................................................................... 27
3.1.4
Available Frequency Bands........................................................................ 27
3.1.5
Band Specifications................................................................................... 28
Section4
System Configuration and Functions........................................................... 30
4.1 BIU (BTS Interface Unit) .................................................................................. 31
4.1.1
BIU Specifications ..................................................................................... 31
4.1.2
BIU block diagram..................................................................................... 32
4.1.3
BIU assemblies.......................................................................................... 33
4.1.4
Sub Assembly Description ......................................................................... 34
4.1.5
BIU front/rear panel overview................................................................... 39
4.2 ODU (Optic distribution Unit) .......................................................................... 43
4.2.1
ODU specifications.................................................................................... 43
4.2.2
ODU block diagram ................................................................................... 44
4.2.3
ODU assemblies ........................................................................................ 44
4.2.4
Sub Assembly description ......................................................................... 46
4.2.5
ODU front/rear panel overview ................................................................. 47
4.2.6
ODU Interface with BIU............................................................................. 48
4.3 OEU (Optic Expansion Unit)............................................................................. 51
4.3.1
Specifications of OEU................................................................................ 51
4.3.2
OEU block diagram ................................................................................... 52
4.3.3
OEU assemblies......................................................................................... 53
4.3.4
Sub Assembly description ......................................................................... 54
4.3.5
OEU front/rear panel overview.................................................................. 57
4.4 ROU (Remote Optic Unit) ................................................................................ 58
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4.4.1
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 ........................................................................................ 63
4.4.3.1
Combination of MRU 1900PCS+850C/ARU 700LTE+AWS‐1 ........................... 63
4.4.3.2
Combination of MRU 1900PCS/ARU 900I+800I ........................................... 65
4.4.4
Sub Assembly description ......................................................................... 68
4.4.5
Bottom of ROU ......................................................................................... 70
4.4.6
Top of ROU ............................................................................................... 72
4.4.6.1
Combination of MRU1900PCS+850C/ARU700LTE+AWS‐1 ............................ 72
4.4.6.2 Combination of MRU1900PCS+850C/ARU700LTE+AWS‐1 ............................ 72
Section5
5.1
System Installation & Operation ................................................................. 75
BIU Installation ............................................................................................... 77
5.1.1 BIU Shelf Installation....................................................................................... 77
5.1.2 BIU Power Cabling .......................................................................................... 78
5.1.3 BIU/RF interface .............................................................................................. 82
5.1.4 MDBU installation ........................................................................................... 87
5.1.5 ODU Interface ................................................................................................. 89
5.1.6 BIU power consumption.................................................................................. 93
5.2 ODU Installation.............................................................................................. 94
5.2.1 ODU Shelf Installation ..................................................................................... 94
5.2.2 ODU Power Cabling......................................................................................... 94
5.2.3 ODU Optic Cabling .......................................................................................... 94
5.2.4 DOU installation.............................................................................................. 95
5.2.5 ODU Power consumption ................................................................................ 97
5.3 ROU Installation .............................................................................................. 98
5.3.1 ROU Enclosure installation .............................................................................. 98
5.3.2 ROU Power Cabling....................................................................................... 106
5.3.3 Optical Cabling.............................................................................................. 108
5.3.4 GND Terminal Connection ............................................................................. 109
5.3.5 Coaxial cable and Antenna Connection .......................................................... 109
5.3.6 LED explanation on ROU ............................................................................... 110
5.3.7 ROU Power consumption .............................................................................. 110
5.3.8 Cable connection between MRU and ARU.......................................................111
5.4 OEU Installation ............................................................................................ 113
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5.4.1 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 .............................................................................. 117
Section6
Operation................................................................................................ 119
6.1 BIU Overview ................................................................................................ 120
6.1.1 BIU ............................................................................................................... 120
6.1.2 BIU TX parameters ........................................................................................ 120
6.1.3 BIU RX parameters ........................................................................................ 128
6.1.4 BIU Logic Sequence Diagram ......................................................................... 129
6.1.5 Interaction with the BIU ................................................................................ 133
6.2 ROU Overview .............................................................................................. 135
6.2.1 ROU Operation.............................................................................................. 135
6.3 OEU Operation.............................................................................................. 144
6.3.1 OEU Operation.............................................................................................. 144
Section7
7.1
Additive functions.................................................................................... 150
Shutdown function (TX output shutdown) .................................................... 151
7.2 Total Power Limit function (TX Output ALC) .................................................. 152
7.3 Automatic Output power setting function (TX Output AGC)........................... 152
7.4 Input power AGC function (TX Input AGC) ..................................................... 152
7.5 Input power limit function (TX Input ALC) ..................................................... 153
7.6 Optical loss compensation............................................................................. 154
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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 ......................................................................... 32
Figure 4.3 – BIU mounting diagram................................................................... 33
Figure 4.4 – MDBU at a glance.......................................................................... 35
Figure 4.5 – MCDU at a glance .......................................................................... 36
Figure 4.6 – MCPU at a glance .......................................................................... 37
Figure 4.7 – MPSU at a glance .......................................................................... 39
Figure 4.8 – BIU front panel view...................................................................... 39
Figure 4.9 – Rear panel view............................................................................. 41
Figure 4.10 – ODU at a glance ........................................................................... 43
Figure 4.11 – ODU block diagram....................................................................... 44
Figure 4.12 – ODU Internal View ....................................................................... 45
Figure 4.13 – DOU
at a glance ........................................................................ 46
Figure 4.14 – 2Way Divider at a glance............................................................... 47
Figure 4.15 – ODU front panel view................................................................... 47
Figure 4.16 – ODU Rear panel view ................................................................... 48
Figure 4.17 BIU/ODU interface .......................................................................... 49
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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 ........................................................................ 53
Figure 4.23 – DOU at a glance........................................................................... 54
Figure 4.24 – EWDM at a glance........................................................................ 55
Figure 4.25 – ECPU at a glance.......................................................................... 55
Figure 4.26 – ERFM at a glance ......................................................................... 56
Figure 4.27 – EPSU at a glance .......................................................................... 56
Figure 4.28 – OEU front panel view................................................................... 57
Figure 4.29 – Rear panel view ........................................................................... 57
Figure 4.30 – ROU at a glance........................................................................... 59
Figure 4.31 – ROU block diagram for MRU 1900PCS+850C and ARU 700LTE+AWS‐1
................................................................................................................ 61
Figure 4.32 – ROU block diagram for MRU 1900PCS and ARU 900I+800I ............ 62
Figure 4.33 – ROU internal view for MRU1900PCS+850C and ARU 700LTE+AWS‐1
................................................................................................................ 64
Figure 4.34 – ROU internal view for MRU 1900PCS and ARU 900I+800I.............. 66
Figure 4.35 – PSU at a glance............................................................................ 69
Figure 4.36 – ROU Bottom view ....................................................................... 70
Figure 4.37 – ROU Power Port View.................................................................. 71
Figure 4.38 – ROU Top View for MRU 1900P+850C and ARU 700LTE+AWS‐1....... 72
Figure 4.39 – ROU Top View for MRU 1900P+850C and ARU 700LTE+AWS‐1....... 73
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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..................................................................... 85
Figure 5.6 –BDA Interface using Circulator ........................................................ 85
Figure 5.7 –BDA Interface using Duplexer ......................................................... 86
Figure 5.8 –MDBU LED indicator information .................................................... 89
Figure 5.9 –Interface port between BIU and ODU ............................................. 90
Figure 5.10 –Cabling interface diagram between BIU and ODU .......................... 91
Figure 5.11 –SC/APC fiber termination ............................................................... 95
Figure 5.12 – ODU rear view with DOUs inserted ............................................... 95
Figure 5.13 – Wall mount dimensions for the ROU ............................................. 98
Figure 5.14 – ROU installation procedure side by side ........................................ 99
Figure 5.15 – ROU installation diagram side by side.......................................... 100
Figure 5.16 – ROU installation procedure for stacked mounting ....................... 101
Figure 5.17 – ROU installation diagram for stacked mounting........................... 101
Figure 5.18 – ROU installation procedure for vertical rack ................................ 102
Figure 5.19 – ROU installation diagram for vertical rack ................................... 103
Figure 5.20 – ROU installation procedure for horizontal rack ........................... 104
Figure 5.21 – ROU installation diagram for horizontal rack ............................... 104
Figure 5.22 – ROU Power Port view ................................................................ 106
Figure 5.23 – ROU optical Port view ................................................................ 108
Figure 5.24 – ROU GND Port view ................................................................... 109
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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 6.2 –MDBU information assigned at theBIU.......................................... 123
Figure 6.3 –MDBU menu information at the BIU ............................................. 124
Figure 6.4 –MDBU name assignment at theBIU............................................... 127
Figure 6.5 –MDBU name assignment at the tree ............................................. 127
Figure 6.6 –MDBU Module Failure information at the BIU ............................... 128
Figure 6.7 –Configuration of BIU‐ODU‐ROU for basic topology........................ 130
Figure 6.8 –Configuration of BIU‐ODU‐ROU for expansion topology................ 131
Figure 6.9 –DOU assignment at the BIU.......................................................... 133
Figure 6.10 –ODU Menu information............................................................... 134
Figure 6.11 –SC‐DAS Link budget for ROU........................................................ 135
Figure 6.12 –Optical information at the ROU ................................................... 138
Figure 6.13 –ROU information assignment ...................................................... 140
Figure 6.14 –ROU Menu information............................................................... 141
Figure 6.15 –ROU Softkey information ............................................................ 143
Figure 6.16 –SC‐DAS Link Budget for OEU ....................................................... 144
Figure 6.17 –OEU Optical information ............................................................. 147
Figure 7.1 –Shutdown logic diagram................................................................ 151
Figure 7.2 –Optical loss information................................................................ 154
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Section1
Safety & Certification Notice
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“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.
‐ The power supply unit in repeaters contains dangerous voltage levels which can cause electric
shock. Switch the mains off prior to any work in such a repeater. Any local regulations are to be
followed when servicing repeaters.
‐ The repeater cover (door) should be securely fastened in open position(with a cord), during
outdoor work in order to prevent door from slamming due to wind (which could cause bodily
harm or damage).
‐ Use this unit only for the purpose specified by the manufacturer. Do not carry out any modifications
or replace any parts which are not sold or recommended by the manufacturer. This could cause
fire, electric shock or other injuries.
‐ Repeaters generate radio signals and thereby give rise to electromagnetic fields that may be
hazardous to any person in the immediate proximity of the repeater and the repeater antennas
for an extended period of time.
‐ Due to power dissipation, this repeater may reach a very high temperature. Do not operate this unit
on or close to flammable materials.
‐ Do not use any solvents, chemicals, or cleaning solutions containing alcohol, ammonia, or abrasives.
‐ Certification
z FCC: This equipment complies with the applicable sections of Title 47 CFR Parts 15,22,24 and
90
UL/CUL: This equipment complies with UL and CUL 1950‐1 Standard for safety for information
technology equipment,including electrical business equipment
FDA/CDRH: This equipment uses a Class 1 LASER according to FDA/CDRH Rules.This product
conforms to all applicable standards of 21 CFR Chapter 1, Subchaper J, Part 1040
‐For PLUGGABLE EQUIPMENT, the socket‐outlet shall be installed near the equipment and shall be
easily accessible.
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Section2
System Overview
2.1
General overview
2.2 System overview
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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:
Shopping malls
Hotels
Campus areas
Airports
Clinics
Subways
Multi‐use stadiums, convention centers, etc.
The system enhances in‐building radio environments that lack signal quality by improving the RSSI
and Ec/Io. By providing communication services throughout the building, the system enables users to
make a calls anywhere in the coverage area.
The system uses both analog (AMPS) and digital (TDMA, CDMA and WCDMA) methods.
The SC‐DAS system supports communication standards and public interface protocols in worldwide
use.
Frequencies: VHF,UHF, 700MHz, 800MHz,850MHz 900MHz,1900MHz,2100MHz, etc.
Voice protocols: AMPS,TDMA, CDMA,GSM,IDEN, etc.
Data protocols: EDGE,GPRS,WCDMA,CDMA2000,Paging,LTE, etc.
SC‐DAS comprises frequency specific modules. Coverage for a specific frequency band is
accomplished by inserting a corresponding frequency module into each unit. Because it delivers
multiple signals with one strand of single mode fiber, the system, requires no additional hardware
modifications whenever a new frequency is added.
The system is featured with the following:
Flexibiltiy & Scalabiltiy
„
Supports fiber‐optic ports up to 32 or 60(using OEU)
„
Connects multiple‐buildings (campus) as one DAS
Modular structures
„
Modular frequency upgrade
„
Plug‐in type modules
Multi‐Band, Single operator
„
Supports multiple services from one WSP
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„
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.
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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 2.1 – Basic system topology supporting SISO configuration
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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.
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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 2.4 – Expansion system topology supporting MIMO configuration
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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
3.1.5
Band Specifications
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3.1
System specifications
3.1.1
Physical Specifications
Parameter
RF Connectors
External
Alarm
connector
(Dry contacts)
Serial
Interface
connector
Fiber connector
BIU
ODU
OEU
MRU
1 N‐type
4 SMA pairs(TX,RX)
2 SMA
per MDBU
‐
2SMA :optical
2SMA :RF
TB: 4pcs for output
‐
TB: 3pcs for input
1 USB(B) type
‐
ARU
2SMA :optical
2SMA :RF
‐
‐
‐
1 USB(B) type
1 USB(B) type
1 USB(B) type
1 SC/APC for ODU
‐
8pcs, SC/APC for
1 SC/APC for ODU
ROU
8 SC/APC for ROU
EWDM Status
Power status
ALM status
DOU1 Status
MCPU
Status Indicator
LD status
PD status
DOU1 Status
MDBU Status
LED Alarm and
Power status
TX Comm
RX Comm
ALM status
MPSU
Power status
DC ALM status
LD status
PD1/2/3/4
LD status
status
System status
System status
PD1/2/3/4
DOU2 Status
Power status
Power status
status
LD status
TX Comm
TX Comm
DOU2 Status
PD1/2/3/4
RX Comm
RX Comm
status
ALM status
ALM status
Opt status
LD status
PD1/2/3/4
System status
status
Power status
TX1 Comm
RX1 Comm
TX2 Comm
RX2 Comm
ALM status
Normal Range: 120VAC
AC Power
‐
50/60Hz
‐
Operating range
Same to left side
108~132VAC,50/60Hz
Normal range: ‐48
DC Power
VDC
Normal: ‐48 VDC
Operating range:
Be provided by BIU
Operating range:
Same to left side
‐40.8 ~ ‐57.6VDC
‐40.8 ~ ‐57.6VDC
SISO Mode : 162W
(Including SISO ODU
4EA)
28W
Power
MIMO Mode : 315W
consumption
(Including SISO ODU
4EA+MIMO
ODU
(Including
DOU2EA)
40W
MRU1900P+850C:50W
ARU700LTE+AWS:40W
(Including DOU2EA)
MRU 1900P:45W
ARU900I+800I:44W
300 x 200 x 258
300 x 200 x 258
6.6Kg
6.8Kg
4EA)
Enclosure
482.6(19”)
Dimensions
221.5(5U) x 450
43.6(1U) x 450
Weight[Full Load]
26.2Kg
6Kg
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482.6(19”)
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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
‐
3.1.4
<45dB
to +50°C
ROU/AOR
‐10 to +50°C
5% to 90%
Available Frequency Bands
Standard
Unit naming
Description
Frequency range
TX(MHz)
Status
RX(MHz)
iDEN
700PS
Public safety
763 to 775
793 to 805
In future
iDEN
800PS
Public safety
851 to 869
806 to 824
Completed
Cellular
850C
Cellular
869 to 894
824 to 849
Completed
iDEN
900I
SMR
935 to 940
896 to 901
Completed
Paging
900 PA
Paging
929 to 930
896 to 902
In future
PCS
1900P
PCS
1930 to 1995
1850 to 1915
Completed
AWS‐1
AWS‐1
AWS‐1
2110 to 2155
1710 to 1755
Completed
VHF
VHF
Public safety
136 to 174
136 to 174
In future
396 to 450
396 to 450
450 to 512
450 to 512
380 to 434
380 to 434
434 to 496
434 to 496
UHF
Public safety(Band1)
In future
UHF
E‐UHF
Public safety(Band2)
In future
698 to 716
LTE
700LTE
Long Term Evolution
728 to 756
Completed
777 to 787
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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.
1) Output power level
Below table shows Output power level as a function of band combination
Band Combinations
MRU
700PS
700LTE
800PS/I
850C
900I
1900P
AWS
VHF
UHF
24dBm
24dBm
ARU
1900P+850C
700LTE+AWS
‐
24dBm
‐
24dBm
‐
28dBm
28dBm
1900P+AWS
‐
‐
‐
‐
‐
‐
30dBm
30dBm
1900P
900I+800I
‐
‐
26dBm
‐
26dBm
31dBm
‐
1900P
‐
‐
‐
‐
‐
‐
30dBm
‐
1900P+850C
700PS+800PS
21dBm
‐
‐
30dBm
‐
700PS+800PS
900I+800I
21dBm
‐
21dBm
‐
‐
On the 21dBm
loadmap21dBm
21dBm
2) General Specifications
Parameter
Specifications
Remark
TX
25dB/step 1dB
ROU
RX
20dB/step 1dB
BIU
Gain Control range
TX input power
‐20dBm~+10dBm
Spurious Emission
< ‐13dBm
Optical Link AGC
>10dB
VSWR
1.8:1
Pass‐band Ripple
4dBp‐p
Max optical Loss
5dBo
Optical wavelength
1310nm/1550nm with WDM
RX output power
0dBm
RX input power
‐50dBm Max
Noise Figure
< 8dB
Excluding
700PS,
800PS
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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 ROU (Remote Optic Unit)
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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 221.5(5U) x 450
mm
Weight
26 Kg
SISO Mode : 168 W(Including SISO ODU 4EA)
Power consumption
MIMO Mode : 315W(Including SISO ODU
Full Load
4EA+MIMO ODU 4EA)
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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 4.3 – BIU mounting diagram
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No.
Unit
Description
Remark
Main Drive BTS Unit
MDBU
Amplify & adjust downlink RF signal
Max 4EA
Amplify & adjust uplink RF signal
Main Com/Div Unit
MCDU
Combine 3EA downlink signal and divide 4EA signal to ODU
Combine 4EA uplink signal and divide 3EA signal to MDBU
Support VHF/UHF interface port
Main Central Processor Unit
MCPU
Control and monitoring system status
Control and monitoring with USB(B)
Allows access to upper‐level network through GSM or Ethernet
MPSU
Main Power Supply Unit
Input power: DC ‐48V, Output power: 9V, 6V
Mother Board
Provide signal interface and power for each unit
M/B
Provide four ports for dry contact output
Provide three ports for input
Provide two Aux ports for future usage
4.1.4
Shelf
19 inch, 5U
Sub Assembly Description
1) Main Drive BTS Unit (MDBU)
MDBU delivers TX signals from the BTS or BDA to related devices as well as delivers RX signals from
these devices to the BTS or BDA. This unit also monitors TX input level. Using the input AGC function,
it automatically adjusts input ATT according to input power. It also has an ATT to adjust RX gain. The
MDBU varies per frequency band to including the following:
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No
Unit naming
In/out RF Port
Description
TX
RX
1900P+850C
Dual Band
4 Port
4 Port
700LTE+AWS‐1
Dual Band
4 Port
4 Port
1900P
Single Band
2 Port
2 Port
900I+800I
Dual Band
4 Port
4 Port
1900P+AWS‐1
Dual Band
4 Port
4 Port
700PS+800PS
On
Dual the
Band loadmap
4 Port
4 Port
900I
Dual Band
2 Port
2 Port
Figure 4.4 – MDBU at a glance
2) Main Com/Div Unit (MCDU)
MCDU combines TX signals that are delivered from MDBU per frequency band and delivers them to
four ODUs. It also combines RX signals from up to four ODUs and sends them to up to four
MDBUs.The unit has a port to interface with VHF&UHF signals. It has an ATT for input monitoring and
input control.
The unit has a reserved port for future usage such as LMU interface, additive MDBU interface ,etc,
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Figure 4.5 – MCDU at a glance
VHF+UHF frequency band includes the following: for use in future
No
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.
In addition, the unit has USB(B) port for local monitoring so that it can inquire and control state of
devices through a PC. On the front panel, it has communication LED indicators to check
communication state with ROU. It also has ALM LED indicators to show whether a device is faulty.
For access to upper network, it has a port to insert an Ethernet port and GSM modem in it.
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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. Do not attempt to replace the lithium battery
unless authorized by a qualified service personnel, to avoid any risk of explosion.
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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
4.1.5
BIU front/rear panel overview
1) Front panel
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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. RF Monitor Port
LED to show whether MDBU is installed and is operating properly
20dB Coupling compared with TX Input Level
20dB Coupling compared with RX Output Level
6. Pwr Test Port & ALM
Output DC power test port and ALM LED to show abnormal state, if any
7. Power switch
Power ON/OFF switch
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2) Rear panel
10
MIMO SIDE
2 1
SISO SIDE
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. V/UHF I/O Port
RF signal interface terminal of VHF&UHF
9. SISO ODU I/O Port
RF signal interface terminal for ODU
10. SISO ODU signal Port
Power and signal interface terminal for ODU
11. SISO BTS/BDA I/O Port
Input/output interface terminal of BTS/BDA
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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.
Up to four ODUs can be connected with BIU each SISO and MIMO path
Figure 4.10 – ODU at a glance
4.2.1
ODU specifications
Item
Spec.
Remark
Size
482.6(19”) x 43.6(1U) x 450
mm
Weight
6 kg
Power consumption
27 W
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4.2.2
ODU block diagram
Figure 4.11 – ODU block diagram
4.2.3
ODU assemblies
Figure 4.12 – ODU Internal View
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No.
Unit
Description
Remark
Donor Optic Unit
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
2W
Divides TX RF signals into two;
Combines two RX RF signals into one
DU
Shelf
Accessories
4.2.4
Distribution Unit
Distributes power and signals to DOU
19” rack, 1RU
25PIN DSUB, Male to female 1pcs
RF Coaxial Cable Assembly 2pcs
Sub Assembly description
1) Donor Optic Unit (DOU)
The DOU performs the RF to optical conversion of TX signals as well as the optical to RF conversion
of RX signals.
Using an optical splitter, this unit divides optical signals from a Laser Diode into four and then
distributes them to each optical port. With a total of four Photo Diodes in RX, the DOU performs the
optical to RF conversion of signals received from each optical port. In addition, the unit is equipped
with an ATT to compensate for optical loss in the fiber or fiber connectors.
Since is uses a WDM, it uses only one strand of fiber for each ROU it connects to.
With internal FSK modem, it will allow operation from a remote site.
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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 4.15 – ODU front panel view
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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. TX RF Port
TX RF signal interface terminal
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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 4.18 – BIU/ODU Interface rear view
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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 4.19 – BIU/ODU interface details
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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. When it receives RX optical signals from ROU, the unit converts them
into RF signals to regenerate the signals and then converts them into optical signals to send them to
ODU.
In OEU, one shelf can be equipped with up to two DOUs. The DOU is the same as the module used
for ODU. Up to four OEUs can be connected with ODU.
Figure 4.20 – OEU at a glance
4.3.1
Specifications of OEU
Item
Spec.
Remark
Size
482.6(19”) x 88.1(2RU) x 450
mm
Weight
9.5 kg
Power consumption
40 W
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4.3.2
OEU block diagram
Figure 4.21 – OEU block diagram
4.3.3
OEU assemblies
Figure 4.22 – OEU internal view
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No.
Unit
Description
Remark
Donor Optic Unit
DOU
Convert TX RF signals into optical signals;
Convert RX optical signals into RF signals;
Max 2 ea.
Provide up to four optical ports per DOU
Expansion Wavelength Division Multiplexer
EWDM
Convert TX optical signals into RF signals;
Convert RX RF signals into optical signals;
Compensates for optical cable loss with ODU
Expansion Central Processor Unit
ECPU
Control and monitoring system status
Control and monitoring with RS232
Relays state values of ROU to BIU
EPSU
Expansion Power Supply Unit
Input power: DC ‐48V, Output power: 9V, 6V
Expansion Radio Frequency Module
ERFM
Regenerate TX signals and transmit FSK modem signals;
Regenerate RX signals and receive FSK modem signals
4.3.4
Shelf
19” rack, 2RU
Sub Assembly description
1) Donor Optic Unit (DOU)
The DOU is the same as the module used for the ODU.
Figure 4.23 – DOU at a glance
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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 4.24 – EWDM at a glance
3) Expansion Central Processor Unit(ECPU)
ECPU can query and control the state of modules installed into the OEU. This unit simultaneoulsy
communicates with the BIU and the ROUas well as acting as communication bridge between BIU and
ROU.
In addition, the unit has a USB port for local communication which enables query and control of
devices thorugh a PC. At the front panel, communication LED indicator indicates communication
with upper BIU and lower ROU. It also has an ALM LED indicator to show fault.
Figure 4.25 – ECPU at a glance
4) Expansion Radio Frequency Module(ERFM)
ERFM repairs Signal to Noise degraded by optical modules.
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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 4.27 – EPSU at a glance
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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. NMS(USB Port)
This equipment isfor indoor use only and all the communication wirings are
limited to indoor use as well.
2) Rear panel
Figure 4.29 – Rear panel view
Item
Description
1. GND Port
Terminal for system ground
2. DC Input Port
Input terminal for DC ‐48V
3.power switch
Power ON/OFF switch
4. To/From ODU Optic Port
SC/APC optical connector terminal
5. To/From ROU Optic Port
SC/APC optical connector terminal; use one optical cable per ROU.
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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.
The ROU receives RX signals through the antenna port, filters out‐of‐band signals in a corresponding
RU and sends the results to Remote Optic Module to make RF tooptical conversion of them. After
converted, the signals are sent to a upper device (theODU or OEU).
The MRU and ARU have a maximum of 2 bands.
The main difference between an MRU an ARU is the presence of an optical module .
(a) MRU
(b) ARU
Figure 4.30 – ROU at a glance
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4.4.1
ROU specifications
Item
Band
Band combination
Size
(W x H x D)
MRU 1900P+850C
Combination1 ARU 700LTE+AWS‐1
Band
Combination2
Band
MRU 1900P
ARU 900I+800I
200 x 300 x 140
mm
Weight
Power
consumption
6.6kg
50W
6.8kg
40W
6.5kg
45W
6.7kg
44W
Remark
Full
load
To be developed
Combination3 To be developed
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4.4.2
ROU block diagram
4.4.2.1
Combination of MRU 1900PCS+850C/ARU 700LTE+AWS‐1
MRU 1900PCS+850C
ARU 700LTE+AWS-1
From/To ODU
V/UHF TX
ON TXD RXD
ALM
EX_PORT
SC/APC
V/UHF RX
USB
(B type)
USB
(B type)
ON TXD RXD
WDM
ALM
Reset Opt
RCU
LD
PD
FSK TX
FSK RX
ARU TX
ARU RX
EX_PORT
Power/
Control/
Status
Power/
Control/
Status
AC/
DC
AC 120V
Or
DC -48V
Reset Opt
RCU
MRU TX
MRU RX
EX_PORT
AC/
DC
Or
AC 120V
Or
DC -48V
MRFM
Or
DC/
DC
ARFM
DC/
DC
Cavity Filter
LOW
LOW
HIGH
HIGH
Cavity Filter
ANT(N-Female)
Figure 4.31 – ROU block diagram for MRU 1900PCS+850C and ARU 700LTE+AWS‐1
4.4.2.2
Combination of MRU 1900PCS/ARU 900I+800I
1900P MRU
800I+900I ARU
From/To ODU
V/UHF RX
ON TXD RXD
ALM
EX_PORT
SC/APC
V/UHF TX
USB
(B type)
USB
(B type)
ON TXD RXD
WDM
ALM
Reset Opt
RCU
LD
PD
ARU TX
FSK TX
FSK RX
ARU RX
OPT SIU
MRU RX
EX_PORT
EX_PORT
Power/
Control/
Status
AC 120V
Or
DC -48V
Reset Opt
RCU
MRU TX
Power/
Control/
Status
AC/
DC
MRFM
Or
AC/
DC
AC 120V
Or
DC -48V
Or
DC/
DC
ARFM
DC/
DC
LOW
LOW
1900P
Cavity Filter
800I/900I
Cavity Filter
ANT(N-Female)
Figure 4.32 – ROU block diagram for MRU 1900PCS and ARU 900I+800I
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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 4.33 – ROU internal view for MRU1900PCS+850C and ARU 700LTE+AWS‐1
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4.4.3.2
Combination of MRU 1900PCS/ARU 900I+800I
OPTIC Port
BPF
MRFM
RCPU
RPSU
R-OPTIC
(a) MRU 1900PCS
BPF
ARFM
RCPU
RPSU
(b) ARU 900I+800I
Figure 4.34 – ROU internal view for MRU 1900PCS and ARU 900I+800I
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No.
Unit
Description
Remark
Main/Add on RF Module
MRFM/ARFM
Filter and heavy amplification of TX signals;
+BPF
Filter and amplify RX signals;
Remove other signals through BPF
Remote Power Supply Unit
RPSU
Input power: DC ‐48V or AC120V, Output power: 25V
For 120V input of AC/DC;
For ‐48V input of DC/DC
Remote Optic
Make RF conversion of TX optical signals;
R‐OPT
Convert RX RF signals into optical signals;
Compensates optical loss interval
Communicates with BIU or OEU though the FSK modem
Remote Central Processor Unit
RCPU
Controls signal of each unit
Monitors BIU/ODU/OEU status through FSK modem
communication
Enable Wall Mount;
Enclosure
Check if the system is normal, through the bottom panel
LED
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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. This device
varies for each frequency band, including the
following:
No
Combination
Unit naming
BPF
Description
Cavity Filter
Ceramic Filter
MRU1900P+850C
MRFM 1900P+850C
Dual.
1900PCS
850C
ARU700LTE+AWS‐1
ARFM 700LTE+AWS‐1
Dual.
700LTE
AWS‐1
MRU1900P
MRFM 1900P
Single
1900PCS
‐
ARU900I+800I
ARFM900I+800I
Dual
900IEN/800IDEN
‐
To be developed
‐
‐
‐
‐
2) Remote Power Supply Unit (RPSU)
RPSU accepts ‐48VDC input. This unit is configured 2 ways: the DC/DC type outputs +25V of DC power
and AC/DC type takes 120V AC input and outputs +25V of DC power.
Please specify which type when ordering. MS Connector, which uses ports to receive inputs, is
designed for either AC and DC input configuration. The input cable is different depending on input
voltage conditions.
The RPSU doesn’t have a switch to turn the power ON/OFF. Unit is active when power is connected.
Here, you should check for range of input power as follows:
No.
Unit
Range of input power
AC/DC
90 to 264 VAC
DC/DC
‐42V to ‐56VDC
(a)AC/DC
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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. It is transported by a fiber strand using WDM(Wavelength
Division Multiplexing) technique
4) Remote Central Processor Unit (RCPU)
The RCPU can monitor and control the RU. This unit receives and analyzes upper communication
data from Remote Optic and reports the unit's own value to the upper devices. At the bottom of the
module, it has an LED indicator to show system status, letting you check any fault conditions. The
same panel also has communication LED Indicators to show communication status with upper
devices. Through the USB Port, the unit enables you to check and control device status through a PC
or laptop. This equipment is for indoor use only and all the communication wirings are limited to
indoor use as well.The RCPU of the MRU have two ports to connect exteranl devices (the ARU and
the VHF&UHF ARU). Using an external interface cable, the MRU can communicate with the
ARU/VHF&UHF ARU.
The MRU collects status information from ARU/VHF&UHF ARU and then communicates with the
upper device
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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.GND LUG PORT
Description
Remark
Terminal for TX and RX RF ports of VHF and UHF
Terminal for signal port to interface with VHF and UHF
Visible LED indicator panel for checking fault status USB Port to
check and control device status through PC and laptop
AC 120V input port or DC‐48V input port
Terminal for TX and RX RF ports of MRU/ARU
Terminal for signal port to interface with MRU/ARU
Terminal for system ground
Power Port
A different type of power port is used supplying ‐48V DC or 120V AC, and specific power
cable should be applied to each different type of ROU power supply (AC/DC or DC/DC).
Below figure shows different power connectors.
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(a)AC/DC
(b)DC/DC
Figure 4.37 – ROU Power Port View
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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 4.39 – ROU Top View for MRU 1900P+850C and ARU 700LTE+AWS‐1
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Item
1. RF Port
2. ANT Port
3. Optic Port
Description
Remark
Terminal for Low RF port to connect between MRU and ARU RF
Terminal for HIGH RF port to connect between MRU and ARU RF
Terminal for RF port to connect to antenna
Termnial for Optical port to connect with fiber cable
The fiber connector type is SC/APC
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Section5
System Installation & Operation
5.1
BIU Installation
5.2 ODU Installation
5.3 ROU Installation
5.4 OEU Installation
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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.
5.1
BIU Installation
5.1.1
BIU Shelf Installation
Generally, the BIU is installed in a 19” standard rack. This unit has handles on each side for easy
placement. With two mounting holes on each side, you can firmly fix the unit into a 19” rack.
Figure 5.1 – RACK Installation
BIU has the following components:
No.
Common Part
SISO Slot
MIMO Slot
Unit
Description
Remark
Shelf
Including Main Board, 19”,5U
1EA
MPSU
Operate ‐48Vdc Input
1EA
MCPU
With Ethernet Port and USB Port
1EA
Power Cable
‐48Vdc Input with two lug terminal
1EA
MCDU
‐
1EA
MDBU
Two among MDBU
Up to 2EA
MCDU
‐
1EA
MDBU
Two among MDBU
Up to 2EA
Basically, the frame of the BIU has slots equipped with an MPSU to supply devices with poweran
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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.
Terminal
Color of cable
Description
‐48V
Blue color
‐
GND
Black color
‐
Not Connected
‐
NC
Remark
Before connecting the power terminal, you need to connect "+" terminal of the DVM probe with the
GND terminal and then connect "–" terminal with ‐48V to see if “‐48Vdc” voltage is present. After
confirming this, connect the power terminal with the terminal of the terminal block seen below.
Figure 5.2 – Power interface diagrm
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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.
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Power Switch
LED
Description
Abnormal, Not supply Power ‐48Vdc
ON
Normal supply power ‐48Vdc
DC ALM
Normal Status
Failure of output Power
ON
Normal Status
DC ALM
Figure 5.3 – PSU LED indicator information
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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. At the rear of the MDBU, 4 ports represent the inputs for the
frequency bands. The following table shows signals to be fed to corresponding ports:
No
Unit naming
In/out RF Port
Description
TX
RX
Port#1
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
Port#2
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
Port#3
850C TX(869~894MHz)
850C RX(824~849MHz)
Port#4
850C TX(869~894MHz)
850C RX(824~849MHz)
Port#1
700LTE TX(728~756MHz)
Dual Band
1900P+850C
1900P:2Port
MDBU
850C:2Port
700LTE RX(698~716MHz,
777~787MHz)
Dual Band
700LTE+AWS‐1
700LTE RX(698~716MHz,
700LTE:2Port
Port#2
700LTE TX(728~756MHz)
MDBU
777~787MHz)
AWS‐1:2Port
Port#3
AWS‐1 TX(2110~2155MHz)
AWS‐1 RX(1710~1755MHz)
Port#4
AWS‐1 TX(2110~2155MHz)
AWS‐1 RX(1710~1755MHz)
1900P
Single Band
Port#1
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
MDBU
1900P:2Port
Port#2
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
Port#1
900I TX(935~940MHz)
900I RX(896~901MHz)
Port#2
900I TX(925~940MHz)
900I RX(896~901MHz)
Port#3
800PS TX(851~869MHz)
800PS RX(806~869MHz)
Port#4
800PS TX(851~869MHz)
800PS RX(806~869MHz)
Port#1
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
Port#2
1900P TX(1930~1995MHz)
1900P RX(1850~1915MHz)
Dual Band
900I+800I
900I:2Port
MDBU
800I:2Port
Dual Band
1900P+AWS‐1
1900P:2Port
MDBU
700PS+800PS
AWS‐1:2Port
Dual Band
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On the loadmap
Port#3
AWS‐1 TX(2110~2155MHz)
AWS‐1 RX(1710~1755MHz)
Port#4
AWS‐1 TX(2110~2155MHz)
AWS‐1 RX(1710~1755MHz)
Port#1
700PS TX(763~775MHz)
700PS RX(793~805MHz)
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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)
VHF+UHF
Dual Band
Port#1
MCDU
VHF+UHF : 1Port
At the rear of BIU, Tx input and Rx output ports are seen for each MDBU. The name of all the ports
are silk screened as "#1, #2, #3 and #4." From the table above, you need to feed correct signals tothe
input and output ports of the corresponding MDBU.
Figure 5.4 – BIU RF interface diagram
For each port, TX and RX signals are separated from each other. It is not necessary to terminate
unused ports unless you want to.
BIU interface with Base station Transceiver
Basically, the BIU has separate TX and RX portsso you have only to connect the input and output
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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.
Using either duplexer or a circulator, you can separate TX/RX signals coming from the BDA
Figure 5.6 –BDA Interface using Circulator
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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.
Given the BIU TX input range (‐20dBm~+10dBm/Total per port), verify it is within the input
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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. Make sure to insert MDBU BLANK cards
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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 5.8 –MDBU LED indicator information
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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. As you
connect the ODUs, the BIU recognizes the ODU that is connected with BIU automatically
Figure 5.9 –Interface port between BIU and ODU
At the rear part of the ODU, the number of RF Ports and Signal Ports are printed in order. Its a good
idea to label these in case additional ODUs are needed.
RF Port
ODU Numbering
Signal Port
TX
ODU SISO
ODU MIMO
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RX
ODU 1
#1
SISO_ODU#1
ODU 2
#2
SISO_ODU#2
ODU 3
#3
SISO_ODU#3
ODU 4
#4
SISO_ODU#4
ODU 1
#1
MIMO_ODU#1
ODU 2
#2
MIMO_ODU#2
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ODU 3
#3
MIMO_ODU#3
ODU 4
#4
MIMO_ODU#4
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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.
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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.
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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.
Power consumption of ODU is given in the later paragraph describing ODU.
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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. It should be inserted into a 19” standard rack and
placed above the BIU leaving a 1RU gap between the ODU and the BIU.
5.2.2
ODU Power Cabling
The ODU gets power from the BIU.
When you connect a 3‐Row, 26‐pin D‐SUB Signal cable from BIU and install DOU, LED on the front
panel is lit. Through this LED, you can check state values of LD and PD of DOU.
5.2.3
ODU Optic Cabling
The ODU makes RF‐optical conversion of TX signals as well as optical‐RF conversion of RX signals.
TheODU can be equipped with up to two DOUs. One DOU supports four optical ports and one
optical port can be connected with an ROU. Optionally, only optical port 4 can be connected with
OEU for ODU1 and ODU2. ODU3. ODU4 can not connect with OEU.
As WDM is used in the DOU, the unit can concurrently send and receive two different wavelengths
(TX:1310nm, RX:1550nm) through one strand of fiber. The DOU has SC/APC fiber connectors.
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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.
The following figure shows installation diagram of the ODU with one DOU inserted in it.
The following figure shows installation diagram of ODU with two DOUs inserted in it.
Figure 5.12 – ODU rear view with DOUs inserted
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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. The table below shows power
consumption of the ODU:
Part
Unit
Consumption Power
ODU_4
DOU 1 EA
14W
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Remark
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ODU_8
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DOU 2 EA
28W
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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 5.13 – Wall mount dimensions for the ROU
ROU Wall Mount Installation
There are two way to install the ROU on the wall. One is to install ROUs on the wall side by side, the
other is stack the ARU above the MRU.
Type1 : Side by Side installation
Install M8 mounting Screws roughly half way in, insert the wall mount bracket over the 2 screws and
secure it with the last 2 screws.
For convenience, the Wall Mount Bracket has mounting holes to let you easily mount an enclosure.
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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.
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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.
Completed installation diagram is as follows
Figure 5.16 – ROU installation procedure for stacked mounting
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The following shows dimension of the mounting point for the stacked bracket.
Figure 5.17 – ROU installation diagram for stacked mounting
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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 5.18 – ROU installation procedure for vertical rack
The following shows dimension of the mounting point for vertical installation
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Figure 5.19 – ROU installation diagram for vertical rack
Type2 : Horizontal installation on the rack
For Horizontal installation, horizontal bracket is needed. Unlike vertical installation, the MRU is
mounted on the right of the installed bracket first and then ARU is installed to the left of MRU
First, install bracket for horizontal installation on the rack
Second, open the front cover of horizontal bracket
Third, mount MRU on the right side of the installed bracket
Fourth, mount ARU on the left side of the installed bracket
Finally, close the front cover of horizontal bracket
Completed installation diagram is as follows
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Figure 5.20 – ROU installation procedure for horizontal rack
The following shows dimensions of the mounting point for horizontal installation
Figure 5.21 – ROU installation diagram for horizontal rack
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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
5.3.2
Remark
Including Wall cradle
1EA
‐ Connector with 3 hole to AC 120 plug(AC)
1EA(Optical for
‐ Connector with 2 lug termination(DC)
AC or DC)
Including Wall cradle
1EA
‐ Connector with 3 hole to AC 120 plug(AC)
1EA(Optical for
‐ Connector with 2 lug termination(DC)
AC or DC)
‐ Two RF cables and one signal cable
‐ Two RF cables
ROU Power Cabling
The ROU supports both of DC‐48V and AC120V input power. The type of input power for the ROU is
already determined at the factory. The ROU is shipped with the correct power cable in the package
box. See the UL name plate of the ROU to determine the input power type of the ROU or see the
power connector in the below picture. You should order the type of input power as your application.
(a)AC/DC
(b)DC/DC
Figure 5.22 – ROU Power Port view
Check if your power cord connector is the same as one seen in the table above. The ROU does not
have power switch to power on/off. Power supply is on when cord is plugged into the AC source.
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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. Fiber connectors should be cleaned alcohocol to remove dirt before installation .
Figure 5.23 – ROU optical Port view
Only the MRU has optical port; there is no optical port on the ARU
5.3.4
GND Terminal Connection
TheROU has one GND terminal port on bottom side, as shown below
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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.
Before connection, check the VSWR of the coaxial cable using a SiteMaster to verify
whether it is within tolerance.
The Return loss should be better than 15dB or VSWR should be below 1.5: 1.
Make sure the antenna connector is tightened properly and free of any dirt or insects.
The antenna connected to the ROU is only for inbuilding use.
Only the MRU has an antenna port. The ARU transmits its signal through RF cable
connected to both the MRU and ARU
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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
5.3.7
ROU Power consumption
The following table shows power consumption of the ROU
Part
Unit
Consumption Power
1900P+850C supporting ARU
MRU
Remark
50W
Dual Band
45W
Single Band
700LTE+AWS‐1
40W
Dual Band
900I+800I
44W
Dual Band
700LTE+AWS‐1
1900P
supporting
ARU
900I+800I
ARU
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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 5.26 – Cable connection between MRU and ARU
Cable
Description
MRU Name
ARU Name
①
Coaxial cable
High
High
②
Coaxial cable
Low
Low
③
Coaxial cable
TX
TX
④
Caaxial cable
RX
RX
⑤
Signal cable
External port
External port
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Remark
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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
5.4.2
Chassis
Description
Including EWDM,ERF,EPSU,ECPU,
19”,2U
Power Cable
‐48Vdc Input with two lug terminal
DOU
Optical Module with 4 Optic Ports
Remark
1EA
1EA
Up to 2EA to be
inserted
OEU Power Cabling
The input power of the OEU is ‐48VDC. You need to connect a DC cable with the Terminal Block seen
at the rear of theOEU.
Terminal
‐48V
NC
GND
Color of cable
Blue color
Description
Remark
Input range: ‐42 to ‐56Vdc
Not Connected
Black color
Before connecting the power terminal, Verify that ‐48VDC is present by connecting the power supply
to a DVM with “‐“ terminal to positive and “+” terminal to GND of the DVM. If voltage is correct,
connect the power terminal through the terminal seen below.
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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.
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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. With
WDM in the DOU, the unit can concurrently send/receive two different wavelengths (TX:1310nm,
RX:1550nm) through one strand of fiber. The DOU has SC/APC connectors.
Figure 5.27 – Optical cable with SC/ACP Type Connectors
SC/APC type connectors must be used. To prevent the optical access part from being marred with
dirt, it should be covered with a cap when not installed. Connectors should be cleaned with alcohol
before they are installed.
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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 5.28 – OEU with DOUs inserted
When you insert a DOU into OEU, use the DOU 1slot first. For unused slots, you nedd to install
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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.
The following table shows power consumption of the OEU:
Part
Unit
Consumption Power
Remark
Shelf
EWDM
Common Part
12W
ERF
EPSU
OEU_4
DOU 1 EA
23W
OEU_8
DOU 2 EA
39W
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Section6
Operation
6.1 BIU Operation
6.2 ROU Operation
6.3 OEU Operation
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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. If the level exceeds
the range, you need to connect an attenuator to the front end of the BIU input and adjust the level in
the corresponding range. If TX input is too low, maximum power cannot be achieved so you need to
increase the output power of BDA or adjust attenuation amount of BTS’s coupler adjust the level of
the ATT.
Using a spectrum analyzer, check all bands and verify if they are in an appropriate level before
making connection with input port of the BIU. Last, check to see if there are spurious signals.
Select an MDBU with the desired frequency bands and . insert it into the BIU and check to see if it
works normally. For the MDBU, up to two TX inputs are provided. Input level per port is ‐20dBm
to+10dBm.
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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.
TXD
Green flicker: TX signals are transmitted to communicate with ROU.
RXD
Green flicker: RX signals are received from ROU.
Green: BIU system is normal.
ALM
Red: BIU system is abnormal; check the alarm through RS‐232C.
ON
MPSU
Green: BIU is connected with power and MPSU works normally.
Green: DC output is normal.
ALM
Red: DC output is abnormal.
MDBU Setting
Insert the MDBU into the BIU. Check if the “ON” LED Indicator at the front panel of MDBU is lit
green. Make a connection with DEBUG port of the MCPU through USB Cable
Check if the ID of MDBU module is located in those SISO MDBU#1& 2,MIMO MDBU#1& 2 slots of the
MDBU through the GUI. When you select the tab of a corresponding slot from the main window, you
can inquire and set the status of a corresponding MDBU module.
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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. These MDBUs can be different combinations as per your application
Use the ON/OFF (Activation/de‐activation) function for a port you want to use and turn it ON.
Figure 6.3 –MDBU menu information at the BIU
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. Make sure to turn OFF unused ports.
The table below shows output power vs number of ports
MDBU Band
Output level (Composite power)
No. of Max port (N)
700LTE
24dBm‐10*LOG(N)
850Cellular
24dBm‐10*LOG(N)
1900PCS
28dBm‐10*LOG(N)
AWS‐1
28dBm‐10*LOG(N)
900I
26dBm‐10*LOG(N)
800I
26dBm‐10*LOG(N)
700PS
23dBm‐10*LOG(N)
VHF
On the loadmap
24dBm‐10*LOG(N)
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UHF
24dBm‐10*LOG(N)
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.
TX IN POWER
TX IN ATT
TX IN POWER
TX IN ATT
TX IN POWER
TX IN ATT
‐20dBm
0dB
‐9dBm
11dB
+1dBm
21dB
‐19dBm
1dB
‐8dBm
12dB
+2dBm
22dB
‐18dBm
2dB
‐7dBm
13dB
+3dBm
23dB
‐17dBm
3dB
‐6dBm
14dB
+4dBm
24dB
‐16dBm
4dB
‐5dBm
15dB
+5dBm
25dB
‐15dBm
5dB
‐4dBm
16dB
+6dBm
26dB
‐14dBm
6dB
‐3dBm
17dB
+7dBm
27dB
‐13dBm
7dB
‐2dBm
18dB
+8dBm
28dB
‐12dBm
8dB
‐1dBm
19dB
+9dBm
29dB
‐11dBm
9dB
0dBm
20dB
+10dBm
30dB
‐10dBm
10dB
The MDBU cards in the BIU provide ALC (Auto Level Control) functionality for each of the inputs to
limit the maximum power output per carrier input. The input level starts activating ALC at ‐20dBm
when turning the ALC on. For correct parameter settings, first, perform the input AGC and then
turn the ALC function on.
Edit the port name and set it as a desired character string (up to 12 characters).For example, the
figure below shows a screen when you set “VzW” for port 1 and “AT&T” for port 2.
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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. The following table shows recommended limit settings:
Item
Recommended Limit
Remark
TX IN HIGH ALM
15dBm
Alarm
TX IN LOW ALM
‐25dBm
Alarm
RX OUT ALC
0dBm
Auto Level control
RX OUT HIGH ALM
5dBm
Alarm
After you finish setting normal input levels and alarm limits, check to see if the MODULE FAILURE
LED Indicator is lit green (Normal case).
Figure 6.6 –MDBU Module Failure information at the BIU
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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).
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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 6.7 –Configuration of BIU‐ODU‐ROU for basic topology
The BIU has two paths : SISO and MIMO. Each path has capability to connect up to 4ODUs,
one ODU can be connected up to 8ROUs.Therefore, the number of ROUs per path is 32.
Regarding the MIMO path, One BIU can connect up to 64 ROUs
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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.
This tree hierarchy is generated automatically as the ROU/OEU is connected at the ODU
optical port
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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. Then, the optical port set at the INSTALL
menu is also actiavted to let you check PD value of the optical port. Any unused optical port is seen
de‐activated in grey.
Figure 6.10 –ODU Menu information
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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.
Initially, if BIU communicates with the lower Unit(OEU,ROU), the optical loss compensation is
automatically affected.
During optical compensation, the Result window shows "Processing" and then a result value. There
are three types of results as follows:
A.
Success: The optical compensation is normally completed
B.
Over Optic Loss: Generated optical loss is 5dBo or more.
C.
Communication Fail: Communication with ROU is in poor conditin.
The ATT for
optical compensation can work based on the numerical expression of 12‐2*(LD
POWER‐PD POWER). Optical compensation can be made not only in the ODU but also in the ROU.
6.2 ROU Overview
The figure below shows the SC‐DAS system link level (BIU‐ODU‐ROU). This section describes ROU‐
related information. The ROU receives various signals through optical modules. These signals are
filtered only for corresponding signal band from the MFR/ARF module and amplified with a High
Power Amplifier. Then, the multiplexer combines the signals with others and sends them to the
antenna port.
Figure 6.11 –SC‐DAS Link budget for ROU
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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. It has an AGC function
for 5dBo of optical cable loss.
The following shows operational procedures after installation ofthe ROU.
Checking the status of ROU's LED Indicator
When power cable is plugged into an outlet, power is provided for the ROU. 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.
Description
LED
ON
ALM
Power is not supplied
Power is supplied.
Normal Operation
Abnormal Operation
OPT
R‐OPT is normal operation
R‐OPT is abnormal Operation
TXD
Flashing when data send to upper unit
RXD
Flashing when data receive from upper unit
Checking Communication LED of ROU
Check if TXD and RXD LEDs in the MRU make communication. Receiving FSK signals from the BIU,
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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. At this time,
check whether external cable is connected to the MRU and ARU
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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.
LD POWER references the output level of ROU Laser Diode which is sent to a upper unit by the ROU.
PD POWER references the input level of Photo Diode to be received from a upper unit.
Figure 6.12 –Optical information at the ROU
Initially, When the ROU communicates with the upper device(ODU/OEU), optical loss compensation
is done automatically. During optical loss compensation, the result window shows "Processing" and
then a result valueis displayed. There are three types of results as follows:
1.
Success: The optical compensation is normally completed.
2.
Over Optic Loss: Generated optical loss is 5dBo or more.
3.
Communication Fail: Communication with ROU is in poor condition.
Continue if TX optic result is successful. If the results are “over optic Loss”, clean optical connector
face using clear cloth, and then operate TX OPTIC COMP again.
Also, you can perform optical loss compensation manually. Here, RUN Mode displays two types as
shown below
1.
Auto : CPU of MRU is performed automatically when is commnincated with upper device
2.
Manual : when user performs manually. This result willdisplay
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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.
Through the GUI at the MRU, it queries the status and control of the MRU, the ARU and the
VHF+UHF RU
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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 6.14 –ROU Menu information
The table below shows maximally allowable Composite Powerlevels that can be set per band:
RDU Band
Power that can be
Setting range
Remark
maximally set
700LTE
24dBm
0 ~ 24dBm
ARU700LTE+AWS‐1
850Cellular
24dBm
0 ~ 24dBm
MRU 1900PCS+850C
28dBm
0 ~ 28dBm
MRU 1900PCS+850C
31dBm
0 ~ 28dBm
MRU 1900PCS
28dBm
0 ~ 28dBm
ARU700LTE+AWS‐1
1900PCS
AWS‐1
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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 following table shows recommended limit settings:
Item
Recommended Limit
Remark
TX OUTPUT HIGH ALM
Max Composite Power+1dB
Alarm
TX OUTPUT LOW ALM
0dBm
Alarm
TX OUTPUT ALC
Max Composite Power
Auto Level control
TX OUTPUT SD
Max Composite Power+2dB
Shutdown
RX ALC
‐45dBm
If TX OUTPUT HIGH ALM is higher than a setting value, alarms will be generated.
If TX OUTPUT LOW ALM is lower than a setting value, alarms will be generated. TX OUTPUT HIGH
ALM/LOW ALM tends to work only as warning.
When you activate (“ON”) TX OUTPUT ALC, outputs will be restricted depending on a setting output
value.
When you activate (“ON”) TX OUTPUT SD, output will be turned OFF once output power level
reaches the same as SD setting value. Upon SD operation, check output level after 10 minutes and
then check the status again.
When you activate (“ON”) RX ALC, inputs will be restricted depending on a setting value.
As described above, when normal output level and alarm limit values are set, you need to check if
the value of MODULE FAILURE LED Indicator is green.
For unused bands, you need to use band select‐ON/‐OFF function to turn them off.
The ROU has softkey function, when softkey is identified with serial number, the band can be
activated.
If the softkey do not identify with the serial number, you can not use that band. The softkey has a
unique value according to serial number. To use two bands simulatanously, you should enter softkey
value.
Figure 6.15 –ROU Softkey information
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, The ROU has unique serial number and also a unique softkey.
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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
6.3.1
OEU Operation
The OEU comes as a rack mount chassis and is located at a remote closet in a building.
The OEUs main function is to act as a hub for expansion to other buildings, It only requires
one strand of fiber to expand to 8 ROUs.( OEU supports up to 2 DOUs and the DOU
supports up to 4 optical ports that connect ROUs).
The ROU can work with a DC Feeder and an Optic Cable Feeder. of the
OEU requires a DC‐
DC power supply.
In the other direction, the OEU can be connected with a ODU. It has optical loss
compensation function for 5dBo of optical cable loss. The following shows operational
procedures after installation of the OEU.
Checking the status of OEU's LED Indicator
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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.
Unit
LED
Indicates
Green : Laser Diode normal status
LD
Red :Laser Diode abnormal status
EWDM
Green : Photo Diode normal status
PD
Red : Photo Diode abnormal status, input optic power low alarm
Green : Laser Diode normal status
LD
Red :Laser Diode abnormal status
Green : Photo Diode(PD) of optic port1 is normal
PD1
Red : PD of optic port1 is abnormal or input optic power low
Green : Photo Diode(PD) of optic port2 is normal
DOU1,2
PD2
Red : PD of optic port2 is abnormal or input optic power low
Green : Photo Diode(PD) of optic port3 is normal
PD3
Red : PD of optic port3 is abnormal or input optic power low
Green : Photo Diode(PD) of optic port4 is normal
PD4
Red : PD of optic port4 is abnormal or input optic power low
System
ON
Green : Power on
TXD1
Green flicker : ECPU send NMS Tx data to BIU
RXD1
Green flicker : ECPU receive NMS Rx data from BIU
TXD2
Green flicker : ECPU send NMS Tx data to ROU
RXD2
Green flicker : ECPU receive NMS Rx data from ROU
ALM
Green : OEU system normal (no alarm)
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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. One is connected to upper ODU and the others
is connected to ROU. Communication with ODU was checked at above step 1
Step 3 is checking whether the OEU communicates with the ROU. The OEU request status to the
ROU and then TXD2 blinks If respones data is received from ROU, RXD2 LED blinks
OEU Optic Comp Operation
The OEU has the function of automatically compensating for optical calbe loss. It can do the work for
up to 5dBo of optical loss. Set “TX OPTIC COMP” of OEU’s optic as "ON." Optical compensation of
the OEU can not be made without communication with the ODU. For 1dBo of optical loss, 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 the OEU GUI.
LD POWER references the output level of OEU Laser Diode, which is sent to a upper unit by the OEU.
PD POWER references the input level of Photo Diode to be received from a upper unit.
Figure 6.17 –OEU Optical information
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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.
Over Optic Loss: Generated optical loss is 5dBo or more.
3.
Communication Fail: Communication with ROU is in poor conditin.
The OEU can be inserted with two DOUs. The DOU’s behavior is exactly same to the ODU(See the
ODU for more detail)
If OEU does not make optical compensation, there will be errors in the system link budget . It
can cause low output levels or make Spurious Emissions detrimental to the system.
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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
7.6 Optic loss compensation
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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. Critical
levels are set through the GUI
After automatic shutdown, the system may automatically turn‐on in order to assess
whether the temporary condition has changed. If the condition is still detected, the DAS
shall shutdown again. This action will be repeated 5 times
After The 5th time, if the condition is still detected, the DAS will be shutdown permanently.
The following diagram shows the shutdown logic
Figure 7.1 –Shutdown logic diagram
After the retry logic exhausts itself, the DAS will shutdown permanently and illuminate the
fault via visual fault indicator
Permanent shutdowns of the DAS will also be reported to the NOC through the NMS
7.2 Total Power Limit function (TX Output ALC)
In order to protect the HPA and not to radiate spurious emissions, output power s is limited
to a defined value which is set by the operator in advance. To execute this function,
operator should turn‐on the ALC function and set limit level through the GUI. If the output
power exceeds the defined value, the output attenuator is adjusted to return it within
defined value. The output attenuator’s adjustment range is 25dB max. If output power
decreases, attenuation is decreased using the AGC function to return to the initial
attenuation level.
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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. Lack of ATT: There is no attenuation available.
If normal logic can’t be
executed, changed ATT will return to initial ATT
Through the output AGC function, it can be verified whether optic compensation is
executed or not.
7.4 Input power AGC function (TX Input AGC)
This function is to help the operator with initial setting during installation.
Without a spectrum analyzer, we can see the input power value through power display
window of the GUI. Use the TX IN AGC function and automatically set the internal ATT
depending on the input level. The ATT is automatically set based on ‐20dBm 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.
TX IN POWER
TX IN ATT
TX IN POWER
TX IN ATT
TX IN POWER
TX IN ATT
‐20dBm
0dB
‐9dBm
11dB
+1dBm
21dB
‐19dBm
1dB
‐8dBm
12dB
+2dBm
22dB
‐18dBm
2dB
‐7dBm
13dB
+3dBm
23dB
‐17dBm
3dB
‐6dBm
14dB
+4dBm
24dB
‐16dBm
4dB
‐5dBm
15dB
+5dBm
25dB
‐15dBm
5dB
‐4dBm
16dB
+6dBm
26dB
‐14dBm
6dB
‐3dBm
17dB
+7dBm
27dB
‐13dBm
7dB
‐2dBm
18dB
+8dBm
28dB
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‐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. The DAS has an input attenuator
in first stage of the MDBU. Through input AGC function, the input ATT is adjusted according
to the input power. If input power increases, the input ATT is adjusted again to limit
increased input powerand
if the input power decreases, the input ATT will return to the
initial ATT setting.
7.6 Optical loss compensation
The DAS 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 ROU as "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 the ROU GUI.
LD POWER references the output level of ROU Laser Diode, which is sent to a upper unit by
ROU. PD POWER references the input level of Photo Diode to be received from a upper unit.
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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.
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