OptiX RTN 600 Introduction

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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

OptiX RTN 600 Introduction

Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page 2Page 2

ForewordOptiX RTN 600 is a PDH/SDH integrated short-haul digital microwave transmission system developed by Huawei.

The maximum microwave transmission capacity is STM-1.

The system provides the backhaul transmission link in the mobile communication system or private network, and also networks with optical transmission equipments.


References Product Description and Hardware Description in

the OptiX RTN 600 Product Manual. Digital Microwave Communication principle


Objectives Upon completion of this course, you will be able

to: Describe the main characteristics of OptiX RTN 600. Describe the system structure ,software and

hardware structure of OptiX RTN 600. List the functions of boards in the IDU, ODU, Hybrid

coupler. Explain the equipment-level protection mode of

OptiX RTN 600.


Contents1. Equipment Overview

2. Equipment Structure3. Equipment Protection


Contents1. Equipment Overview

1.1 Equipment Components IDU ODU Antenna Intermediate Frequency (IF) Cable Hybrid coupler

1.2 Equipment Characteristics


Equipment Components

Hybrid coupler

IF cable

IDU

ODU

Antenna

Pole


IDU Indoor unit (IDU) realizes the

mutual conversion between the service signal and IF analog signal. Two types of IDU are available:

IDU 610 is 1U high and supports one microwave direction.

IDU 620 is 2U high and supports maximum four microwave directions.

IDU 610

IDU 620


IF transit jumper IF cable

IF Cable The IF cable provides -48V power for ODU and transmits

the IF signal and ODU management signal between IDU and ODU.

Three types of IF cable in OptiX RTN 600: IF jumper: connection between IDU and other IF cable. 1/2 inch and RG-8U (1/4 inch) cable: connection between ODU

and IF jumper. RG-8U (1/4 inch) cable is used for the distance less than 180 meter. 1/2 inch cable is used for the distance between 180m and 300m.


ODU Outdoor unit (ODU) realizes the

mutual conversion between IF analog signal and RF signal.

ODU is irrelevant to the microwave transmission capacity. An ODU of the OptiX RTN 600 can support the transmission capacity from 4 E1 to one STM-1.


Hybrid Coupler When two ODUs share one antenna, the ODUs must be

connected to an RF signal coupler/ splitter (hybrid coupler). Then, the hybrid coupler is connected to the antenna.


Antenna The antenna performs the

directional transmission and reception of RF signals. The main parameters are frequency band, diameter and antenna gain.


Equipment Characteristics PDH/SDH integrated microwave transmission system. The modulation mode and link capacity are set through

software. Microwave link supports the SNCP. Built-in ADM provides flexible service add/drop function. Providing the clock tracing function. Supporting mobile FLASH card. The boards of IDU 610 and IDU 620 are compatible each

other.


Questions What are the components of OptiX RTN 600? What are the

functions of them? What about the connection relation among the components?

What are the characteristics of OptiX RTN 600 digital microwave equipment?


Contents1. Equipment Overview2. Equipment Structure

3. Equipment Protection


Contents Equipment Structure

2.1 System Diagram 2.2 Software Structure 2.3 IDU Structure and Boards 2.4 ODU Interfaces and

Parameters 2.5 Hybrid coupler Parameters


System Diagram OptiX RTN 600 is divided based on functional units. It consists of

service interface unit, cross-connection unit, IF unit, control unit, clock unit, auxiliary interface unit, and ODU.

Order wireExternal alarm

Transparent data interface

NM cascading network port

Antenna

ODU

RF signal

IF signalIF unit

Serviceinterface

unit

Basebandsignal

Basebandsignal

Auxiliaryinterface

unitClock unit Control unit

Fan andpower

supply unit

Overhead and control bus

E1STM-1eSTM-1o

External clock or WS signal

-48V power supply

NM network port

NM serial port

Cross-connect

unit


Software StructureNM software

Host software

Board softwareODU

In the OptiX RTN 600, all the board software and host software are integrated together and run on the SCC board.

SCC

ODU is regarded as a logical board. The ODU board software in the SCC board manages and controls the ODU hardware through the management signal between the IDU and ODU.



2.1 System Diagram 2.2 Software Structure 2.3 IDU Structure and

Board 2.4 ODU Interfaces and

Parameters 2.5 Hybrid coupler Parameters


IDU Structure ( IDU 610) IDU 610 is 1U high and

adopts the nature heat dissipation mode.

Support 1+0 configuration.

EXT slot3

PXC slot1

EXT slot4

SCC slot2

Note: The slot numbering rule is from bottom to up and left to right.

IF boardLine board and tributary board


IDU Structure ( IDU 620) IDU 620 is 2U high and

dissipates heat through wind cooling.

Support a maximum of 4+0 configuration or two groups of 1+1 configuration.

slot20 PXC slot3

PXC slot1EXT slot4SCC slot2

EXT slot5 EXT slot6EXT slot7 EXT slot8 The slot

numbering rule is the same as OptiX RTN 610 .


IDU Board -- IF Board IF1A

ODU powersupply switch

IF cable interface Indicators

The IF board receives and transmits 1x IF signal. It realizes the conversion between baseband digital signal and IF signal, it also provides -48V DC power supply and management signal to the ODU.


IF1A

-48V power supply is output directly to ODU.

Support the DC-C grounding mode only.

IF1B

The -48V power is isolated by the DC-DC power supply module and then sent to the ODU.

Support DC-I and DC-C grounding modes.

IF Board -- Types


IF Board -- Board Installation

slot20 PXC slot3


EXT slot7

EXT slot3PXC slot1

EXT slot4SCC slot2

IDU 610

IDU 620

EXT slot5EXT slot8EXT slot6

①②

③④

Paired Slots

Paired Slots

No limitation for board installation under HSB configuration. Only installing IF boards in paired slots under SD or FD

configuration.Recommended installation sequence for IF boards


IF Board -- Block Diagram

Combinerinterface

unit

IF process

unit

Modemunit

MUX /DEMUX

unit

TUPPunit

Cross-connectactive/

standbyunit

SMODEM unit

Clockunit

Powerunit

Logical controlunit

Backplane

IF interface

ODU management signal

Control bus

HSM switch signal

Supportloop-backfunction

Pairedslots


IF Board -- Receiving Signal Flow

Digital IF signal

Combinerinterface

unit

IFprocess

unit

Modemunit

SMODEM unit

IF interface

Analog IF signal

ODU management analog signal

Baseband digital signal

Serial port signal

SCC board


IF Board -- Receiving Signal Flow (Cont.) When MUX/DEMUX unit works in SDH mode:

Modemunit

MUX /DEMUX

unit

SCCboard

TUPP unit

The first 2M overhead

signal

The second 2M overhead signal--

wayside E1

SDH RS, MS, HP overhead and pointer processing

SDH microwaveframe signal

LINK ID identifies the microwave link and is used to distinguish different microwave links.

Detecting LINKID, ATPC, and

microwave RDI information

Cross-connectionand clock board

Clock signal


IF Board -- Receiving Signal Flow (Cont.)

Modemunit

MUX /DEMUX

unit

SCC board

TUPP unit

Only 1x 2M overhead

signal

VC4 signal

Detecting the frame header and

B1 byte

PDH microwave frame signal

Cross-connectionand clock board

Clock signal

Detecting J0, LINKID, ATPC and

microwave link RDI information.

When MUX/DEMUX unit works in PDH mode:


Receiving Signal Flow in HSB Mode

MUX / DEMUX unit

TUPP unit

MUX /DEMUX

UnitOn

StandbyIF board

Modemunit Local board

Microwave signal

2 signals are synchronize

d

Standby board Microwave signal

two signals have the

phase difference.

Bite Error or alarm

happened


IF Board -- Receiving Signal Flow (Cont.)

MUX /DEMUX

unit

Cross-connection

active/standby

unit

Activecross-

connectionboard

Standbycross-

connectionboard

High-order pointers are

aligned

High-order pointer signal

VC12/VC3 service

VC4 serviceTUPP unit


IF Board -- Transmitting Signal Flow

MUX /DEMUX

unit

Cross-connectionactive/standby unit

Activecross-

connectionclock board

Standbycross-

connectionclock board

Service

Clock

System clock used by local board

Clock fault

Service

ClockVC4 signal

High-order pointer signal

C1J1


IF Board -- Transmitting Signal Flow(cont.)

Modemunit

MUX /DEMUX

unit Cross-connection

active/standby

unit

SCCboard

2M overhead

2M overhead – wayside E1

SDH microwaveframe signal

Process the overhead,

pointer, and scramble.

VC4 signal

High-orderpointer signalInserting LINKID,

ATPC, and microwave link RDI information.

When MUX/DEMUX unit works in SDH mode:


IF Board -- Transmitting Signal Flow(cont.) When MUX/DEMUX unit works in PDH mode:

SCCboard

Modemunit

MUX /DEMUX

unit Cross-connection

active/standby

unit

1x 2M overhead

PDH microwaveframe signal VC4 signal

De-mapping TU12 and set the PDH microwave frame overhead, scramble, LINKID, ATPC, and microwave link RDI information.


IF Board -- Transmitting Signal Flow(cont.)

Combinerinterface

unit

IFprocess

unitModem

unit

SMODEM unit

IFinterface

IF analog signal

ODU management analog

signal

IF digital signal

Baseband digital signal

Serial port

signalSCC

board

-48V power supply


IF Board -- IF PerformanceItem Performance

4 X E1 8 X E1 16 X E1 STM-1Modulation mode QPSK 16QAM QPSK 16QAM QPSK 16QAM 128QAM

Channel spacing (MHz))

7 3.5 13.75 /14 a 7 27.5/

28 b13.75 /14

a 27.5 / 28 b

Coding scheme

PDH signal is coded through the Reed-Solomon (R-S).SDH signal is coded through the Trellis-Coded Modulation (TCM) and R-S.

Remarks a: At the 18G band, the channel spacing is 13.75MHz, At other bands, the channel spacing is 14MHz.b: At the 18G band, the channel spacing is 27.5MHz. At other bands, the channel spacing is 28MHz.


IF Board -- IF Signal Parameters

Item Performance

IF signal

Transmitting frequency (MHz)

350

Receiving frequency (MHz)

140

Impedance (ohm) 50

ODU management

signal

Modulation mode ASK

Transmitting frequency (MHz)

5.5

Receiving frequency (MHz)

10


IF Board -- Indicators

The space link is faulty. OnThe space link is normal.On

LINK

No services are configured. OffThe service has a minor or remote alarm.

OnThe service has a critical or major alarm.

OnThe service is normal.On

SRV

The board is not working, not created, or has no input power.

OffThe board hardware is faulty.OnThe board is working normallyOn

STAT

MeaningStatusIndicator


IF Board -- IndicatorsIndicator Status Meaning

ODU On The ODU is normal.On The ODU is faulty.

BEROn The microwave BER exceeds the

threshold.Off The microwave BER does not

exceed the threshold.

RMTOn The remote equipment has a

Remote Defect Indication (RDI).Off The remote equipment has no

RDI.

ACT On The board is in active state. Off The board is in standby state.


IDU Board -- Tributary Board PH1

Indicator 1-8 channel E1

DB44 interfaces

9-16 channel E1DB44 interfaces

The tributary board processes multi-channel E1 signals and provides the E1 interface.


Tributary Board -- Types

16-channel E1 interface

75 ohm

PH1A8-channel

E1 interface75 ohm

PO1A PO1BPH1B16-channel E1

interface120 omh

8-channel E1 board

120 ohm

Four groups of jumpers

determine the impedance.

Front panel

The board interface impedance is selected through the jumper:

If there is a jumper, the impedance is 75 ohm.

If there is no jumper, the impedance is 120 ohm.


Tributary Board -- Board installation

slot20 PXC slot3

PXC slot1 SCC slot2

EXT slot7


IDU 610

IDU 620


①

Recommended installation sequence for TU boards

②③

④EXT slot4

EXT slot3


Tributary Board -- Block Diagram

Tributaryinterface

unit

Codingand

decodingunit


standby unit

Clock unit

Logicalcontrol

unit

Backplane

E1interface

Control bus

Support loop-backfunction

Mapping/De-mapping

unit


Tributary Board -- IndicatorsIndicato

r Status Meaning

STAT

On The board is working normally.On The board hardware is faulty.Off The board is not working, or

created, or has no input power.

SRV

On The service is normal.On The service has a critical or major

alarm.On The service has a minor or remote

alarm.Off No services are configured.


IDU Board -- Line Board SD1/SDE

SMBelectrica

l interface

LC optical

interface

The line board processes 1-2 channel STM-1 signal and provides STM-1 optical or electrical interface.


Line Board -- Types

SD1

Dual-port STM-1 optical interface

Ie-1interface

S-1.1interface

L-1.1interface

L-1.2interface

SL1

Single- port STM-1 optical interface

Ie-1interface

S-1.1interface

L-1.1interface

L-1.2interface

SDE

dual-port STM-1 electrical interface

SLE

Single-port STM-1 electrical interface


Line Board -- Board installation

slot20 PXC slot3

PXC slot1 SCC slot2


IDU 610

IDU 620


①②③

④EXT slot4

EXT slot3

⑤ EXT slot7

Recommended installation sequence for LU boards


Line Board -- Block Diagram

O/Econverter

unit

Overheadprocess

unit

Clockunit

Logicalcontrol

unit

Backplane

Optical interface

Control bus

TUPPunit

Overhead busSupport the loop-back function


standbyunit


Line Board -- Interface Parameters

Item PerformanceNominal bit rate (kbit/s) 155520

Application code Ie-1 S-1.1 L-1.1 L-1.2

Optical fiber typeMulti-mode fiber

G.652 G.652 G.652

Transmission distance (km) 0.5 15 40 80/100

Working wavelength (nm)

1260-1360

1261-1360

1263-1360 1480-1580

Average transmit optical power (dBm)

－ 19~－14

－ 15~－8 － 5~0 － 5~0

Minimum sensitivity (dBm) -23 -28 -34 -34

Minimum overload (dBm) -14 -8 -10 -10Minimum extinction ratio

(dB) 8.2 8.2 10 10


Line Board -- IndicatorsIndicat

or Status Meaning

STAT

On The board is working normally.On The board hardware is faulty.Off The board is not working, or created, or no

power supply.

SRV

On The service is normal.On The service has a critical or major alarm.On The service has a minor or remote alarm.Off No services are configured.

LOS1On No.1 opt. port on the SL1/SD1 board has a

R_LOS alarm.Off No.1 opt. port on the SL1/SD1 board has no

R_LOS alarm.

LOS2On No.2 opt. port on the SD1 board has a R_LOS

alarm.Off No.2 opt. port on the SD1 board has no R_LOS

alarm.


IDU Board -- Ethernet Board EFT4 EFT4 is a Ethernet transparent transmission board. It

receives, transmits and processes four-channel Ethernet signals.

slot20 PXC slot3

PXC slot1 SCC slot2

EXT slot7


IDU 610


①②③

④EXT slot4

EXT slot3

IDU 620

Recommended installation sequence for EFT4 boards


Power Cross-Connection Clock Board -- PXC

IndicatorIDUPowerswitch

External clock/Waysideinterface

Power inputinterface

The PXC board realizes the cross-connection (16×16 VC4) and clock functions , it also provides the DC power for other boards.


PXC -- Board Installation

IDU 610

slot20 PXC slot3

PXC slot1 SCC slot2

EXT slot7

IDU 620


①② EXT slot4


EXT slot3


PXC -- Block Diagram

Externalclockunit

Systempowerunit

Logicalcontrol

unit

Backplane

External clock/

wayside E1 interface

Control bus

Clockunit Cross

-connectunit

Overhead bus

External -48V

power

－ 48V

System power supply


PXC -- Block Diagram for Wayside E1

Cross-connect board

Cross-connect board

wayside E1

wayside E2

IF board

IF board

IF board

IF board

SCC boardNote: To plug out SCC board may interrupt the wayside E1 services.


PXC -- IndicatorsIndicato

rStatus Meaning

STAT

On The board is working normally.On The board hardware is faulty.Off The board is not working, or not created,

or has no input power.

PWR

On The power is normal.On +3.3V power fault or -48V input power

abnormalOff No input power.

SYNCOn The clock is normal.On The clock source is lost or the switch

exists.

ACT On The board is in active state.Off The board is in standby status.


IDU Board -- SCC SCC provides system control and communication functions,

auxiliary interfaces management and standby internal power module.

Indicators

Indicator test button

Reset button

NM serial port

NM interface

NM cascaded interface

Order wire

Asynchronous data and Boolean interface

Flash memory


SCC Board -- Board Installation

slot20 PXC slot3

PXC slot1 SCC slot2

EXT slot7

IDU 610

IDU 620

EXT slot5EXT slot8EXT slot6EXT slot4


EXT slot3


SCC Board - Block Diagram

Auxiliaryinterface

unit

Systempowerunit

BackplaneOrder wire interface

Control bus

Overheadcross-

connectunit

Overhead bus

－ 48V

System power supply

Asyn. data interface

Boolean interface

Controlcomm.

unit

NM interface

Cascaded network port NM serial port

HUB


SCC Board -- NM Cable Connection

NMS

The SCC board sets the NE ID through the software. The initial NE ID is set to 49136 by default.

The IP address of NE is also set through the software. The IP address is set to 129.9.0.ID by default.

Connected by Ethernet cable


SCC Board -- Wrong Connections

Multiple NEs are cascaded as a

loop.

Self-loop of single NE

The connection will cause NE reset frequently.


PDH Microwave Overhead When the IF board is set as PDH mode, such as

4E1/8E1/16E1, the DCC, order wire, and asynchronous transparent data interface can only use one byte.

When the IF board is changed from STM-1 mode to PDH mode, if the transparent transmission setting of DCC byte occupies the D1 byte, the manual modification is required. Set the working mode to DI mode first. Otherwise, when the IF board is changed to the PDH mode, the DCC is interrupted.


SCC Board -- IndicatorsIndicat

orStatus Meaning

STAT

On The board is working normally.On The board hardware is faulty.Off The board is not working, or not

created, or has no input power.

PROG

On 100 ms and off 100 ms

During the board power-on/reset, loading the software.

On 300 ms and off 300 ms

The board software is introduced through the BIOS during the power-on/reset.

On Initialize the upper layer software.On 100 ms and off 100 ms

During the board power-on/reset, BOOTROM self-test fails.


SCC Board -- IndicatorsIndicat

orStatus Meaning

PROG

On During the board power-on/reset, the memory self-test fails or the upper layer software loading fails, or during the board running, the logical file and software are lost.

Off The software is normal.

ALM

On The system is normal.On The system has a critical or major alarm.On The system has a minor alarm.Off The system has no input power.

MANTOn The system is in maintenance state ( that is,

loop-back, laser power-off, and ODU transceiver mute)

Off The system is in working state.


IDU Board -- Fan Board (FAN)Indicato

r slot20 PXC slot3

PXC slot1 SCC slot2

EXT slot5EXT slot8EXT slot6EXT slot4

EXT slot7

Fan direction

Indicator Status Meaning

FAN

On The fan is working normally.

On The board is faulty.

Off The board has no input power.



2.1 System Diagram 2.2 Software Structure 2.3 IDU Structure and Board 2.4 ODU Interfaces and Parameters 2.5 Hybrid coupler Parameters


ODU -- Interface

< 5 kg Power consumption: < 40WWeight:

< 260 mm X 260 mm X 92 mm (width X height X depth)Dimension:

Grounding double-screw bolt

RSSI test interface IF interface

Antenna port


ODU -- Block Diagram

IF interface Antenna portIF

interfaceunit

Powerunit

Control unit

Amplifier

Amplifier Amplifier

Duplexer

Amplifier Upconversion

Downconversion

Frequency synthesizer


ODU -- Main Performance

Item Performance7G 15G 18G 23G

Frequency range (GHz)

7.114-7.743

14.501-15.257

17.685-19.710

22.000-23.608

TR spacing (MHz) 161 420 1010 1008

Channel spacing (MHz)

3.5, 7, 14, 28

3.5, 7, 14, 28

3.5, 7, 13.75, 27.5

3.5, 7, 14, 28

The ODU frequency bands covers from 7G to 38G. Some commonly used frequency band indexes are listed in the table.


ODU -- Main Performance (cont.)

Item Performance7G 15G 18G 23G

maximum Tx (dBm)

QPSK 25.5 24.5 24 22.516QAM 21 20 20 19128QAM 15 14 14 13

minimum Tx (dBm) -4

Transceiver frequency

stability (ppm)±5

[Note]: If the transmitting power exceeds the maximum level ,the Bite Error will occur in the service.



2.1 System Diagram 2.2 Software Structure 2.3 IDU Structure and Board 2.4 ODU Interfaces and Parameters 2.5 Hybrid coupler Parameters


Hybrid coupler

Secondary tributary port

Antenna port

Primary tributary port


Hybrid coupler -- Main Performance

Item PerformanceFlatness (dB) ≤0.5Attenuation (dB) ≤1.7Coupling (dB) 6.5±0.6Isolation (dB) ≥25Standing wave ratio ≤1.2Weight (kg) <5


Summary Equipment Structure of OptiX RTN 600

Software Structure: the host and board software are integrated in the SCC and the ODU is a logical board.

IDU: includes IDU 610 and IDU 620. IF board: IF1A and IF1B Line board: SL1, SD1, SLE, and SDE Tributary board: PH1 and PO1 Data board: EFT4 Power cross-connection clock board: PXC System control and communication board: SCC Fan board: FAN

ODU: interface, dimension, weight, power consumption, power indicator, and frequency indicator

Hybrid coupler: interface and main indicators


Contents1. Equipment Overview2. Equipment Structure3. Equipment Protection


1+1 Hot Standby Backup (1+1HSB)

Cross-connection board Service

board

ActiveIF BoardActive

ODU

Hybrid couplerAntenna

StandbyIF Board

StandbyODUmut

e

mute


Description of 1+1 HSB

Switch point The services are switched in the cross-connection board.

Switch condition Automatic switch: IF board hardware fault, ODU hardware fault,

remote failure indication, and microwave frame loss., Manual switch: locking, forced, manual, and clearing

Characteristics The active/standby unit has no restrictions on the paired slots. The switch actions are implemented by the software and

hardware. The service will be interrupted in the case of switch.


1+1 Space Diversity (1+1 SD)

Cross-connection board Service

board

ActiveIF BoardActive

ODU

Antenna 1

StandbyIF Board

StandbyODU

Antenna 2

Mute


1+1 Frequency Diversity (1+1 FD)

Cross-connectionboard Service

board

ActiveIF Board

ActiveODU

HybridAntenna

StandbyIF Board

StandbyODUtf2

rf2

tf1rf1


Space Frequency Diversity (1+1 SD+FD)

Cross-connectionboard Service

board

ActiveIF Board

ActiveODU

Antenna 1

StandbyIF board

StandbyODU

Antenna 2

tf2rf2

tf1rf1


Description of Hitless Switch (HSM) Switch point

The services are switched on the IF board. Switch condition

Automatic switch: microwave frame loss, microwave signal loss, microwave bit error , and the HSB switch triggers HSM receives forcibly the services from standby board.

Manual switch: Force switch, clear. Characteristics

The Active /standby IF board must in paired slots. Switch is implemented by hardware. Service has no interruption during switch.


Reverse Switch Introduction

When the system fails to detect the hardware faults in the transmission direction, the HSB and SD cannot be triggered.

Switch condition Remote site detecting the failure and send RDI to local site to

trigger the HSB or SD switch. Characteristics

It is only configured in the case of HSB or SD. Through the service detection, all the hardware faults in the

transmission direction can be protected. Fail to accurately differentiate the hardware fault and external

fading. After the fading, the repeated switch may be caused.


Questions From the service switch point, protection object, card

position installation, switch condition, service impairment, and signal flow, compare the HSB protection with the HSM protection.

What are the application scenarios of reverse switch?


SummaryContents Review Main characteristics System Structure, Software and Hardware Structure Board Functions and Signal flow in the IDU ODU and Hybrid coupler Features and Functions Equipment Level Protection Actions and Signal flow Microwave Link Protection Actions and Signal flow

Thank Youwww.huawei.com

OptiX RTN 600 Introduction

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