SOLiD 150V450U RDU MODULE(VHF/UHF) User Manual

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Document ID	1213339
Application ID	QRQnVZFx//Vv5y9ZtJ3aFA==
Document Description	unsers manual-02
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	274.16kB (3426975 bits)
Date Submitted	2009-12-14 00:00:00
Date Available	2009-12-29 00:00:00
Creation Date	2009-11-19 17:33:54
Producing Software	Acrobat Distiller 7.0.5 (Windows)
Document Lastmod	2009-11-19 18:15:10
Document Title	untitled

4.2.3
ODU parts
Figure 4.10 – ODU Inner Look
No.
Unit
Description
Remark
DOU
DOU
Convert TX RF signals into optical signals;
Convert RX optical signals into RF signals;
Provide up to four optical ports per DOU
2Way Divider
2W
Divide TX RF signals into two;
Combine two RX RF signals into one
DU
Shelf
Accessories
Confidential & Proprietary
Distribution Unit
Distribute power and signals to DOU
19” rack, 1U
15PIN DSUB, Male to female 1pcs
RF Coaxial Cable Assembly 2pcs
33/99
Max 2ea
4.2.4
Function by unit
1) Donor Optic Unit (DOU)
DOU makes electronic-optical conversion of TX signals and makes optical-electronic conversion
of RX signals.
With an optic splitter in it, this unit divides optical signals from Laser Diode into four and then
distributes them to each optical port. With a total of four Photo Diodes in RX, DOU makes
optical-electronic conversion of signals received from each optical port. In addition, the unit is
equipped with ATT for optical compensation made in case of optical cable loss.
With internal WDM, it uses only one optical cable to be connected with ROU.
Figure 4.11 – MDBU Outer Look
2) 2Way Divider (2W)
2W is equipped with two 2-way splitters in a one-module form and the splitters work for TX/RX
signals, respectively.
Designed in broadband type, the divider combines and divides 2GHz or higher of signals from
FSK modem signals.
Figure 4.12 – 2Way Divider Outer Look
Confidential & Proprietary
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4.2.5
Front/rear panels of MHU
1) Front panel
Figure 4.13 – BIU front panel Outer Look
Item
1,2
Description
LED indicator to check DOU module state to see if it is abnormal
2) Rear panel
Figure 4.14 – Rear panel Outer Look
Item
Description
1. Optic Port
SC/APC optical connector terminal; use one optical cable per ROU.
2. DC I/O Port
Terminal to deliver power and state values
3. RX RF Port
RX RF signal interface terminal
4. TX RF Port
TX RF signal interface terminal
Confidential & Proprietary
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4.2.6
Interface with BIU
Figure 4.15 – Interface between MHU and ODU
On the top of BIU, up to four ODUs can be stacked.
In this case, it is recommended to stack the units at least 1U of an interval between BIU, for
heat from BIU may climb up to ODU, which may cause flame.
As seen in the figure below, connect the coaxial cable for TX and another coaxial cable for RX
with corresponding ports at the rear of BIU. For power supply and communication, connect
15Pin D-Sub Connector cable with a corresponding port.
Confidential & Proprietary
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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 S/N feature 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 two OEUs can be connected with ODU.
Figure 4.16 – OEU Outer Look
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4.3.1
Specifications of OEU
Item
Spec.
Remark
Size
482.6(19”) x 88.1(2U) x 450
mm
Weight
9.3 Kg
Power consumption
48 W
4.3.2
Block Diagram of OEU
4.3.3
OEU parts
Confidential & Proprietary
38/99
Full Load
Figure 4.17 – OEU Inner Look
No.
Unit
Description
Remark
Donor Optic Unit
DOU
Convert TX RF signals into optical signals;
Convert RX optical signals into RF signals;
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;
Compensate for optical cable loss with ODU
Expansion Central Processor Unit
ECPU
Control and monitoring system status
Control and monitoring with RS232
Relay 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, 2U
Function by unit
1) Donor Optic Unit (DOU)
DOU is the same as the module used for ODU.
Confidential & Proprietary
39/99
Max 2ea
Figure 4.18 – MDBU Outer Look
2) Expansion Wavelength Division Multiplexer(EWDM)
EWDM module makes optical-electronic conversion of TX signals and makes electronic-optical
conversion of RX signals. With an FSK modem in it, this multiplexer communicates with BIU. It
also has ATT for optical compensation to compensate for optical cable loss between ODUs.
Furthermore, it has internal WDM, and so, it needs only one optical cable to work with ROU.
Figure 4.19 – EWDM Outer Look
3) Expansion Central Processor Unit(ECPU)
ECPU can inquire and control state of modules to be installed into OEU. This unit
communicates with upper BIU while communicating with lower ROU. It also acts as
communication bridge between BIU and ROU.
In addition, the unit has RS-232C port for serial communication, which enables inquiry and
control of devices thorugh PC. At the front panel, communication LED indicator indicates
Confidential & Proprietary
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communication state with upper BIU and lower ROU. It also has ALM LED indicator to show if a
device gets faulty.
Figure 4.20 – ECPU Outer Look
4) Expansion Radio Frequency Module(ERFM)
ERFM reconstructs Signal to Noise degraded by optical modules. With an internal FSK modem,
this module communicates with ROU.
Figure 4.21 – ERFM Outer Look
5) Expansion Power Supply Unit(EPSU)
As DC/DC Converter, EPSU receives -48V of input and provides +9V and +6V of DC power
required for OEU.
Confidential & Proprietary
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Figure 4.22 – ERFM Outer Look
Confidential & Proprietary
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