nec_mtd pl 028 (pasolink+ stm 1)

2002 NEC Corporation MTD-PL-028141005

PASOLINK+

6-38 GHz 155 MB DIGITAL RADIO SYSTEM(1 + 0 / 1 + 1 SYSTEM)

This document describes the current version of NEC standard equipment. Ifthere is any conflict between this document and the System Description and/orthe Compliance statement, the latter will supersede this document.The specifications or configuration contained in this document are subject tochange without notice due to NEC's continuing design improvement.

NEC Corporation

MTD-PL-028/141005 PASOLINK+ 155 MB 1+0/1+1 SYSTEM

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TABLE OF CONTENTSLIST OF ABBREVIATIONS..............................................................ii

1. INTRODUCTION ............................................................................................................... 1

2. FEATURES......................................................................................................................... 3

2.1 Advanced Technologies and Superb Performance........................................................ 3

2.2 High System Gain............................................................................................................ 3

2.3 Easy and Quick Installation ............................................................................................. 3

2.4 Common platform architecture ....................................................................................... 3

2.5 Frequency Agility and Easy Tuning ................................................................................. 3

2.6 TX Power Control ............................................................................................................ 3

2.7 System Flexibility ............................................................................................................. 3

2.8 Maintenance Facilities ..................................................................................................... 4

2.9 Service Channels (Please see 4.2 Service Channel for available channel)................... 4

2.10 Electromagnetic Compatibility (EMC).......................................................................... 4

2.11 Conformity with the ITU................................................................................................ 4

3. RELIABILITY AND QUALITY............................................................................................ 7

4. INTERFACE........................................................................................................................ 9

4.1 Digital Signal Interface..................................................................................................... 9

4.2 Service Channel (SC).................................................................................................... 10

4.3 RF Port .......................................................................................................................... 10

4.4 Alarm Signal Interface.................................................................................................... 10

5. DESIGN CONSIDERATIONS ......................................................................................... 11

5.1 Protection Capability...................................................................................................... 11

5.2 Antenna.......................................................................................................................... 11

5.3 Transmitter-Receiver (ODU) ......................................................................................... 11

5.4 Indoor Unit (IDU) ............................................................................................................ 12

5.5 Other Tools and Materials ............................................................................................. 13

5.6 Option Panel .................................................................................................................. 14

6. PERFORMANCE.............................................................................................................. 21

6.1 Performance.................................................................................................................. 21

6.2 IDU................................................................................................................................. 23

6.3 Service Channels (Please see 4.2 Service Channel for available channels).............. 23

6.4 General .......................................................................................................................... 24

6.5 Events ............................................................................................................................ 25

6.6 Indication........................................................................................................................ 25

6.7 House Keeping Alarm/Control Interface........................................................................ 26

6.8 Alarm Items.................................................................................................................... 27

6.9 Performance Monitoring/Metering Items........................................................................ 28

PASOLINK+

155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005

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LIST OF ABBREVIATIONS

AMI Alternate Mark Inversion

ANT Antenna

APC Automatic Phase Control

ATPC Automatic TransmitterPower Control

ATT Attenuator

B8ZS Binary 8-Zero Substitution

BACK-Pressure Anti-congestion control

BB Base Band

BBE Background Block Error

BER Bit Error Rate

BER-M Bit Error Rate Measuring

CBL Cable

CKT Circuit

CMI Coded Mark Inversion

CN Carrier to Noise

CONV Converter

CTRL Control

DEM Demodulator

DI Data Input

DO Data Output

DPU Digital Processor Unit

DSC Digital Service Channel

EMC ElectromagneticCompatibility

EOW Engineering Order Wire

ES Errored Seconds

Ethernet LAN specification along IEEE802.3

FEC Forward Error Correction

FIL Filter

FOTS Fiber Optical TransportSystem

HDB3 High Density Bipolar order 3

HIC Hybrid Integrated Circuit

HYB Hybrid

IDU Indoor Unit

IEC International Electrotechnical Comission

IF Intermediate Frequency

INS Insertion

INTFC Interface

ITU-R Radio CommunicationSector of ITU

ITU-T Telecommunication Sectorof ITU

LCT Local Craft Terminal

LDC Laser Diode Current

LO Local Oscillator

LOF Loss of Frame

LOS Loss of Signal

MAINT Maintenance

MIC Microwave Integrated Circuit

MLC Multi-level Coding

MLCM Multi-level Code ModulationTechnique


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MMIC Monolithic Microwave Integrated Circuit

MOD Modulator

MODEM Modulator Demodulator

MTPC Manual Transmitter PowerControl

MUX Multiplexer

NE Network Element

OC Over Current

ODU Outdoor Unit

OFS Out of Frame Seconds

OH EXT Overhead Extension

OPT Optical

OW Order Wire

PBR Parity Bit Error Rate

PM CARD PASOLINK Management Card

ppm parts per million

PS Power Supply

PWR Power

QAM Quadrature AmplitudeModulation

R-BER Residual Bit Error Rate

RF Radio Frequency

RFCOH Radio FrameComplementary Overhead

RMT Remote

RS Reed Solomon coding

RSL Received Signal Level

RSOH Regenerator Section Overhead

RX Receiver

SC Service Channel

SDH Synchronous DigitalHierarchy

SES Severely Errored Seconds

STM Synchronous TransportModule

T-R Transmitter Receiver

TX Transmitter

UAS Unavailable Seconds

VF Voice Frequency

WS Wayside

PASOLINK+

155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005

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1. INTRODUCTION

NECs new PASOLINK+ series; 6-38 GHz 155 Mbps Synchronous Digital Hierarchy (SDH)microwave radio systems are designed to transmit one synchronous transport module (STM-1, 155 Mbps). They operate at the 6-38 GHz radio frequency band using quadrature amplitudemodulation (32-QAM or 128-QAM), and have a transmission capacity of OC3 or STM-1. Inaddition to the PASOLINK+ systems for short distance links, NEC offers a complete productline of STM-1 radio systems that includes the 4, L6, 7, 8, 13 GHz 155 Mbps 128 QAM and 4,5, U6, 8, 11 GHz 155 Mbps 64 QAM systems for long distance use. For those systems,please refer to the other technical descriptions.

The PASOLINK+ radio systems are fully compatible with SDH Network Elements (NE). Thesystems consist of antennas, outdoor units (ODU), and indoor units (IDU). They areconnected through a coaxial cable for each radio channel. Available configurations are non-protection type (1 + 0) and protection type (1 + 1). The protection type is available for twin-path type and hot-standby type.

Regarding antenna configurations there are two types available. There is a one-antennasystem employing hybrid (HYB) RF combiner and divider, and a two-antenna system methodusing each antenna for two ODUs independently. The hybrid is the passive device thatcombines and divides the signals between two ODUs and an antenna. Therefore, the one-antenna system requires only a single antenna, however, additional loss between ODUs andantenna have to be considered. On the other hand, the two-antenna system has high systemgain as same as non-protection type.

STM-1 interface can be selected for electrical or optical. Therefore, PASOLINK+ systems areuseful in fiber optical transport system (FOTS). Additionally, Fast Ethernet interface can beselected for IP network.

The PASOLINK+ employs a full digital MODEM using enhanced signal processing techniquesand forward error correction (FEC). Moreover, the bit-error-rate characteristics againstreceiver input signals are excellent for applying FEC (32-QAM System: MLCM (multi-levelcode modulation) and RS (Reed Solomon method), 128-QAM System : QAM and RS).

The equipment can be installed easily and quickly using a PC (as Local Craft Terminal), andas a maintenance tool.

PASOLINK+ 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005

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Type 1 Type 211-38 GHz 128 QAM/32 QAM type 6-8 GHz 128 QAM type(0.3m Diameter Antenna) (Low Loss Coaxial cable connection to Antenna)

Figure 1. Antenna and (1 + 0) ODU

Figure 2-1. Indoor Unit (IDU) 1 + 0 Configuration

Figure 2-2. Indoor Unit (IDU) 1 + 1 Configuration


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2. FEATURES

2.1 Advanced Technologies and Superb Performance

Throughout the SDH radio system, NECs own advanced technologies are used. Intensiveuse of Microwave Integrated Circuits (MICs) and Hybrid ICs (HICs) make the TRP durableand compact. Also, custom made large-scale integrated circuits (LSIs) are applied. Forexample, a new digital MODEM is incorporated in a single LSI chip, specially developed byNEC for the radio equipment. Furthermore, low-power high-speed complementary metaloxide semiconductor (CMOS) LSIs are extensively used, making the equipment morecompact and reducing the power consumption.

2.2 High System Gain

Multi-Level Coding Modulation (MLCM) is applied to ensure a better error performance (32QAM System).

Forward Error Correction (FEC) with Reed-Solomon coding is equipped to improve BERperformance.

2.3 Easy and Quick Installation

Interconnection: Only one coaxial cable and automatic equalization (up to 450 m by using12D-FB cable)

Compact and Light Various mounting methods for IDU, ODU, and antenna

2.4 Common platform architecture

The ODU of 128 QAM type can be used for 32 QAM type.

2.5 Frequency Agility and Easy Tuning

Field tunable local-oscillator (Synthesizer) RF point frequency can be changed through LCT (Local Craft Terminal, except 6 8 GHz) Frequency Tunable without changing RF FIL on Subband basis.

2.6 TX Power Control

ATPC (Automatic Transmitter Power Control) reduces interference to neighboringsystems, improves residual BER performance, alleviates upfade problems. The adjustablerange of ATPC is -20 dB to 0 dB (128-QAM) and 23 dB to 0 dB (32-QAM).

MTPC (Manual Transmitter Power Control) is also available through LCT. The adjustablerange of MTPC is 20 dB to 0 dB (128-QAM) and 23 dB to 0 dB (32-QAM) at 1 dB step.

2.7 System Flexibility

(1 + 0) Unprotected (1 + 1) Hot-standby (1 + 1) Hot-standby with Space Diversity (1 + 1) Twin-path (Hitless switching) IDU is commonly used for all frequency bands.

(In case of 1+1 Hot-standby or twin-path system, either one antenna system with hybridcombiner or two antenna system excluding hybrid combiner is chosen. Please refer to Fig. 3(a), (b).)

1 + 1 Hybrid combiner: NEC provides 3 dB balance-type hybrid combiner.


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2.8 Maintenance Facilities

Pre-settable BER alarm point: 10-4, 10-5, 10-6

IF, Baseband (near end, far end) loop back (without external equipment) Remote monitoring of ODU operating condition on IDU Calling facility between IDUs

2.9 Service Channels (Please see 4.2 Service Channel for available channel)

Order Wire : IDU-IDU/IDU-ODU/ODU-ODU party line connection (EOW) (EOW system using PASOLINK MONITOR (option) at ODU)

Digital Port : 64 kbps Sync., 2 ch standard VF Port : 0.3 to 3.4 kHz (1 ch) 600 ohms, 2 ch standard Wayside : 2.048/1.544 Mbps, 1 ch (optional at 32 QAM STM-1) 10 Base-T : 1 ch (optional; exclusive use in other service channels) Cluster Alarm : 2 ch (optional; auxiliary alarm transmission)

2.10 Electromagnetic Compatibility (EMC)

Complies to ETS 300385

2.11 Conformity with the ITU

Conformity with the relevant ITU-R, ITU-T Recommendations and EuropeanTelecommunication Standard (ETSI)

ANTENNA

ODU 1

HYBRID

ODU 2

Figure 3(a). Ways to Mount the 1 + 1 PASOLINK+ using a single Antenna


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Figure 3(b). Ways to Mount the 1 + 1 PASOLINK+ using two Antennas


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3. RELIABILITY AND QUALITY

NECs PASOLINK+ utilizes advanced VLSI, MIC and MMIC technology for all-solid-statecircuitry from data input to RF output.

NEC plants are located all over the world, and quality control is carefully monitored in everymanufacturing step, such as parts selection, assembly, adjustment and testing. NEC QualityControls employing Zero Defect and Value Engineering Techniques extend to every aspect ofproduction and inspection in accordance with stringent Total Quality Control programs. Inaddition, NEC plants have obtained ISO 9001 certifications.


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4. INTERFACE

The NEC PASOLINK+ system has the ITU-T standard interface conditions as listed below:

4.1 Digital Signal Interface

1) Main, Traffic, Electrical (STM-1) [Selectable]

Type (ITU-T G.703) : In station section, full functionality Bit Rate : 155.520 Mbit/s 20 ppm Level : 1 Vp-p (nominal) TX accepts 12.7 dB cable loss at 78 MHz Code Format : CMI Impedance : 75 ohms, unbalanced (nominal) Connector : IEC 169-13

2) Main Traffic, Optical (STM-1) [Selectable]

Type (ITU-T G.957) : S-1.1 (Inter-Office) Bit Rate : 155.52 Mbit/s 20 ppm Level : S-1.1 -8 to -15 dBm (transmit level)

-8 to -28 dBm (receive level) Connector : FC/PC 3) Main Traffic, Optical mono fiber (STM-1) [Selectable]

Bit Rate : 155.520 Mbit/s 20 ppm Transmit Wavelength : A type = 1310 nm

: B type = 1550 nm Receive Wavelength : A type = 1550 nm

: B type = 1310 nm Mean Optical Output Power : -7 dBm (typ.) Minimum Receive Overload Power : -3 dBm Minimum Receive Sensitivity : -23 dBm Connector : FC/PC

4) SOH Termination

l SOH Termination : RST (Full transparent transmission for SOH at default setting.) (E1 and F1 byte can be used for DSC.)

5) Main Traffic, Ethernet (10/100 Base-T(X)) [Selectable]

Type : 10 Base-T/100 Base-TX (Auto-sensing or fixed) Port Number and Interface : 2 (Each port is separated), RJ45 Transmission Rate (Port 1 + Port 2) : 100 Mbps + 50 Mbps, 75 Mbps + 75 Mbps or

2 ch. best effort selectable Flow control : Full Duplex or Half Duprex (Backpressure)/

Auto negotiation


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Forwarding Mode : Store-and-Forwarding (This interface card is worked as Ehernet Bridge.) (This interface card is compliant with IEEE802.3.)

4.2 Service Channel (SC)

32 QAM STM-1 128 QAM STM-1 Connector

Order wire (Voice) 1 ch 1 ch Head set receptacle

DSC 64 Kbps Sync. V.11 contra/co-directional selectable

2 ch standard 2 ch standard D-sub 37 pin

ASC (0.3-3.4 kHz) 4W 600 ohms

2 ch standard 2 ch standard D-sub 37 pin

Wayside 2.048 Mbps/1.544 Mbps*1 (G.703)

1 ch optional N/A D-sub 9 pin

10 Base-T *1 2 Mbps 1 ch optional 64 kbps 1 ch optional*2 RJ45

Cluster ALM 2 ch optional 2 ch optional D-sub 15 pin

*1: Wayside and 10 Base-T are used exclusively each other. *2: This option needs one channel of DSC or ASC.

4.3 RF Port

Interface

Coaxial : 6-8 GHz SMA Coaxial connector(N type optional)

Waveguide : 11 GHz waveguide PDR 100: 13-15 GHz waveguide PBR 140: 18-23 GHz waveguide PBR 220: 26 GHz waveguide PBR 260: 38 GHz waveguide PBR 320

Antenna direct mount : 11-38 GHz NEC original interface

Polarization : Vertical or Horizontal (field changeable) (waveguide type)

4.4 Alarm Signal Interface

Interface : Relay Contact (Form-C) Connector : 25-way D-sub


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5. DESIGN CONSIDERATIONS

5.1 Protection Capability

PASOLINK+ provides a protection switching system of Hot-standby protection (1 + 1), andtwin-path protection (1 + 1).

1. Non-Protection System

Non-protection system consists of one ODU, one IDU for 1 + 0 System, and one antenna.

2. Hot-Standby System

Hot-Standby system consists of two ODUs, one IDU for 1 + 1 system, and one or two sets ofantennas. The protection switch of this systems is performed by the TX switches on theODUs at the transmitting end and Hitless switch on the 150 M INTFC (or OPT INTFC) modulein the IDU at the receiving end.

3. Twin-path System

Twin-Path system consists of two ODUs, one IDU for 1 + 1 System, and two sets ofantennas. The protection switch of this system is performed by the Hitless switch on the 150M INTFC (or OPT INTFC) module in the IDU at the receiving end.

5.2 Antenna

The complete menu of PASOLINK+ antennas includes diameters of 0.3m to 1.8m. They aredesigned to meet stringent requirements on mechanical rigidity. Antennas with diameters of0.3m to 1.8m can be mounted directly to the ODU, making waveguides obsolete. This hasrelevant cost and reliability merits and makes the installation quicker and easier. ThePASOLINK+ pole mounting structure is designed in a way that the ODU can be replaced whilekeeping the antenna and mounting bracket, including orientation, in place. The reflectors of theantennas are covered with white diffusive paint and the mounting structure is hot-dipgalvanized.In the 6 - 8 GHz band, coaxial or waveguide cable with transducer is used for connectingbetween the ODU and IDU.

5.3 Transmitter-Receiver (ODU)

A block diagram is shown in Figure 4-5.

The transmitter-receiver is designed to handle a STM-1 signal in 6-38 GHz bands. Theequipment is designed to withstand severe weather conditions.32/128-Quadrature amplitude modulation (32/128 QAM) is applied.

Local Oscillator is employed for APC (Automatic Phase Control) loop circuit at the transmitterand receiver.


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5.4 Indoor Unit (IDU)

The IDU consists of six (6) panels that have following functions. (Figure 4-1)

1. ODU INTFC

Performing the multiplexing/demultiplexing of the transmitting signal, receiving signal, SV andEOW signal

Compensating the signal loss depending on IF cable length Automatic Gain control

2. 32 QAM MODEM / 128 QAM MODEM

32/128 QAM (Quadrature Amplitude Modulation), Modulator/Demodulator Compensating quality degradation caused by fading Error correction of burst error using the Reed Solomon encoding/decoding MLC (Multi Level Code) encoding/decoding. (Only for 32-AM) Data streams conversion depending on the modulation scheme Scrambling/de-scrambling of the data RFCOH multiplexing/demultiplexing Velocity conversion for radio frame

3. 150M INTFC / OPT INTFC / 10/100 BASE-T(X) INTFC (Selectable)

STM-1 signal interface (150M INTFC / OPT INTFC) RSOH multiplexing/demultiplexing (150M INTFC / OPT INTFC) Hitless switching of No.1 and No.2 receiving signal (150M INTFC / OPT INTFC) 2 ports 10 BASE-T/100 BASE-TX INTFC (Each port traffic is separated) (10/100 Base-

T(X)) Transparency for VLAN (IEEE 802.1Q Tagged frame) (10/100 Base-T(X))

4. CTRL

Setting of equipment operation Monitoring alarm status of the equipment Performing performance monitoring Providing upper rank NMS interface LCT terminal interface EOW interface

5. WS INTFC (option) (32-QAM option)

Interface of 2048/1544 kbps Wayside signal

6. LAN CARD (Option)

Ethernet interface (10 Base-T) card with bridge function (exclusive use against WSinterface)


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7. DC-DC CONV

Converting 48 VDC (option 24 VDC) input voltage to several internal utilizing voltages

5.5 Other Tools and Materials

1. LCT

Local Craft Terminal (LCT) is the simple provisioning and maintenance terminal forPASOLINK+ system. LCT connects to the IDU. The LCT can control all functions andmeasures all monitor levels.

2. PNMS

NEC can provide an Element Network Management tool (PNMS: PASOLINK NetworkManagement System). These tools can be used for maintenance and performancemonitoring. These tools consist of software for UNIX or WINDOWS NT OS.

3. Coaxial Cable (Interconnection between IDU and ODU)

The 5D-FB, 8D-FB, 10D-FB or 12D-FB coaxial cable (Low loss 50 ohms) serves as theinterconnection between the transmitter-receiver (ODU) and baseband unit (IDU). The cableexchanges I/O data signals, DC power, alarm signals, control signals for frequency and TXpower, RX level and ODU primary voltage monitoring signals and a pair of orderwire signals.Due to the use of different IF (Intermediate Frequency) for TX and RX, a single coaxial cable issufficient. This results in faster and easier installation.

4. Power Supply Voltage

The nominal power supply voltage is 48 VDC. The guaranteed range of the same unit issufficient for nominal voltage of 36 to 60 V (48 V) as well. In this way, commonalitybetween modules is achieved throughout the network even if different DC voltages are appliedat different locations. (24 VDC power supply is available as an option.)

5. PASOLINK MONITOR (OPTION)

PASOLINK MONITOR is used for receiving signal level monitor and ODU-IDU/ODU-ODUEOW system. This is an installation tool for antenna direction pointing. (Receiving level canbe measured as voltage by voltmeter without PASOLINK MONITOR.)

6. Head set

Head set is used for EOW system.


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5.6 Option Panel

Option panel list

Slot Panel1 STM-1e Electric Interface2 STM-1/OC3 Optical Interface (S-1.1)3 STM-1/OC3 Optical Interface (WDM Monofiber TX:1.3um RX:1.5um)4 STM-1/OC3 Optical Interface (WDM Monofiber TX:1.5um RX:1.3um)5

Main slot

Ethernet 10 Base-T/100 Base-TX (2ch)A Wayside 2.048 Mbps 75 ohms balanceB Wayside 2.048 Mbps 120 ohms unbalanceC Wayside 1.544 Mbps 110 ohms unbalanceD Wayside 2.048 Mbps 75 ohms balance + Cluster ALME Wayside 2.048 Mbps 120 ohms unbalance + Cluster ALMF Wayside 1.544 Mbps 110 ohms unbalance + Cluster ALMG Cluster ALMH Ethernet 10 Base-T (2 Mbps (wayside) or 64 Kbps) (1 ch)I

Side slot

Blank panel


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Figure 4-1. PASOLINK+ - 1 + 0 System Block Diagram

AN

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Figure 4-2. PASOLINK+ - Hot-standby System Block Diagram

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Figure 4-3. PASOLINK+ - 1 + 1 Twin-path System Block Diagram

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ON

V:

DC

-DC

Con

vert

erID

U:

MD

P-1

50M

B5T

-2-

LO:

Loca

l Osc

illat

orM

OD

EM

:M

odul

ator

-Dem

odul

ator

OD

U:

TRP

( )G

150M

B5-

2-O

PT

INT

FC

:O

ptic

al S

TM

-1 In

terf

ace

OW

:O

rder

wire

RF

CK

T:

Rad

io F

requ

ency

Circ

uit

ST

M-1

:S

ynch

rono

us T

rans

port

Mod

ule-

1W

S I

NT

FC

:W

aysi

de In

terf

ace

(opt

iona

l)

LAN

CA

RD

10B

ase-

T

*1

LAN

CA

RD

10B

ase-

T

*1*1*1

*1

WS

INT

FC

or L

AN

CA

RD

is u

sed

excl

usiv

ely.

*2

150M

INT

FC

/OP

T IN

TF

C o

r 10/

100B

ase-

T(X

) IN

TF

C is

use

d ex

clus

ivel

y.

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

C15

0M IN

TF

C/

OP

T IN

TF

C

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

CW

S I

NT

FC

CT

RL

ST

M-1

IN/O

UT

PN

MS

LCT

WS

IN

/O

UT

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN/O

UT

DC

-DC

CO

NV

RF

CK

T

CTR

LL

O

OW

IN/O

UT

MD

UN

IT

MD

UN

IT

SW

UN

IT

OD

U(N

o.1

CH

)

OD

U(N

o.2

CH

)

IDU

*2*2

10/1

00B

ase-

T(X)

10/1

00B

ase-

T(X)

10/1

00B

ase-

T(X)

10/1

00B

ase-

T(X)

2 x

10/1

00B

ase-

T(X)

2 x

10/1

00B

ase-

T(X)

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

C15

0M IN

TF

C/

OP

T IN

TF

C

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

CW

S IN

TF

C

CTR

L

STM

-1IN

/OU

T

PN

MS

LCT

WS

IN/

OU

T

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN/O

UT

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN

/OU

T

MD

UN

IT

MD

UN

IT

SW

UN

IT

OD

U(N

o.1

CH

)

OD

U(N

o.2

CH

)

IDU

*2 *2


- 18 -

Figure 4-4 PASOLINK+ - Hot-standby / Space Diversity System Block Diagram

AN

TA

NT

AN

TA

NT

150M

INT

FC

:E

lect

rical

STM

-1 In

terfa

ceA

NT

:A

nten

naC

TR

L:

Con

trol

DC

-DC

CO

NV

:D

C-D

C C

onve

rter

IDU

:M

DP

-150

MB

5T-2

-

LO

:Lo

cal O

scill

ator

MO

DE

M:

Mod

ulat

or-D

emod

ulat

orO

DU

:TR

P( )

G15

0MB

5-2-

OP

T I

NT

FC

:O

ptic

al S

TM-1

Inte

rface

OW

:O

rder

wire

RF

CK

T:

Rad

io F

requ

ency

Circ

uit

ST

M-1

:S

ynch

rono

us T

rans

port

Mod

ule-

1W

S I

NT

FC

:W

aysi

de In

terfa

ce (o

ptio

nal)

*1

WS

INT

FC

or

LAN

CA

RD

is u

sed

excl

usiv

ely.

*2

150M

INT

FC

/OP

T IN

TF

C o

r 10/

100B

ase-

T(X

) IN

TF

C is

use

d ex

clus

ivel

y.

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

C15

0M IN

TFC

/O

PT

INT

FC

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TF

CW

S IN

TFC

CT

RL

ST

M-1

IN/O

UT

PN

MS

LCT

WS

IN

/O

UT

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN

/OU

T

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN

/OU

T

MD

UN

IT

MD

UN

IT

SW

UN

IT

OD

U(N

o.1

CH

)

OD

U(N

o.2

CH

)

IDU

LAN

CA

RD

10B

ase-

T

*1*1

*2*2

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TFC

150M

INTF

C/

OP

T IN

TF

C

MO

DE

M

DC

-DC

CO

NV

OD

UIN

TFC

WS

INT

FC

CT

RL

ST

M-1

IN/O

UT

PN

MS

LCT

WS

IN

/O

UT

DC

-DC

CO

NV

RF

CK

T

CT

RL

LO

OW

IN/O

UT

DC

-DC

CO

NV

RF

CK

T

CTR

LL

O

OW

IN/O

UT

MD

UN

IT

MD

UN

IT

SW

UN

IT

OD

U(N

o.1

CH

)

OD

U(N

o.2

CH

)

IDU

LAN

CA

RD

10B

ase-

T

*1*1

*2*210

/100

Bas

e-T(

X)10

/100

Bas

e-T(

X)

2 x

10/1

00B

ase-

T(X)

2 x

10/1

00B

ase-

T(X)


- 19 -

TX first MIX (Depend on frequency band)

LO

to/fromIDU

to/fromANTENNA

CTRLDC-DC CONV

RX IF BPF

TX IFTX IF

BPFMIX MIX

MIX

MPX DUP

RF CKT

BPF

LNA

PA

Figure 4-5. PASOLINK+ - ODU Block Diagram

(a) 1+0 ODU (Type 2)

(b) 1+0 IDU

Figure 5. External View of ODU and IDU


- 20 -

Figure 6. Interconnection of ODU and IDU (1 + 0)


- 21 -

6. PERFORMANCE

6.1 Performance

STM-1/OC3 Narrow band STM-1/OC3Modulation 32 QAM 128 QAMForward Error Correction Reed-Solomon and Multi-level

CodingReed-Solomon Coding

CH Spacing 55(56) MHz 27.5 (28) MHzData Interface Electrical/OpticalATPC + MTPC Range -23 to 0 dB -20 to 0 dBAdditional Attenuation 5 dB for span equalization (except 38 GHz)

(All other values are typical except indicated as guaranteed values).Frequencyband

6/7/8GHz

11 GHz 13 GHz 15 GHz 18 GHz 23 GHz 26 GHz 38 GHz

Range(GHz)

5.9 8.5 10.7 11.7 12.75 13.25 14.25 15.35 17.7 19.7 21.2 23.6 24.25 27.0 37.0 40.0

TX Output Power (dBm) 6/7/8 GHz, 11/13/15 GHz : Guarantee Value : 2 .0 dB18 GHz : Guarantee Value : +2.0, -1.0 dB23/26 GHz : Guarantee Value : 2.0 dB38 GHz : Guarantee Value : 3.0 dB

STM-1 - - - - 18 18 17 13.5STM-1(N.B)

25 16.5 16.5 16.5 15 15 14 10.5

STM-1(NB), Highpower ver.(optional)

- - 18 18 19 19 18 14.5

Receiver Threshold (dBm) at 10-6 BER (Guarantee Value : +3dB)STM-1 - - - - -76 -76 -75.5 -74STM-1(N.B)

-68 -67 -67 -67.5 -67.5 -67.5 -67 -66

at 10-3

BERAbove value -1 dB

System Gain (dB) at 10-6 BER (*1) (Guarantee Value : -3dB)STM-1 - - - - 94 94 92.5 87.5STM-1(N.B)

93 83.5 83.5 84 82.5 82.5 81 76.5

STM-1(NB), Highpower ver.(optional)

- - 85 85.5 86.5 86.5 85 80.5

at 10-3

BERAbove value + 1 dB

FrequencyStability

+/-6 ppm (+/- 0.0006%) (Typical), +/-10 ppm (+/- 0.001%) (Guarantee)

TuningBandwidth

Center-tuned

Up to 50 MHz(Depend on T-R spacing)

Up to 370 MHz (Depend on T-R spacing)

N.B: Narrow band *1. In case of using a NEC BR CKT for 1 + 1 Hot-standby configuration, additional loss of 7 dB (typical) will be

considered.

STM-1 (128 QAM)/(32 QAM)WS Signal OPTION: (32 QAM only) See 4.2Digital ServiceChannel

See 4.2

Analog ServiceChannel (VF)

See 4.2

House KeepingAlarms

Inputs 6 photo-couplerOutputs: 4 Form-C dry contact relays

Network Management NMS Protocol: SNMPInterface: 10 Base-T or V.11


- 22 -

STM-1 (128 QAM)/(32 QAM)Power Supply Voltage 36 to 60V (EN60950) (24V: OPTION)Power Consumption See 6.4Ambient Temperature IDU : -5C to +50C

ODU: -33C to +50C

STM-1/OC3 Narrow band STM-1/OC3SOH terminal RST modeIDU size 1+0: 1U

1+1: 3USTM-1e

OC3/STM-1 (S-1.1)BB Interface

10 Base-T/100 Base-TXWS (2 Mbps or 1.5 Mbps)(optional)

1 CH (E1, T1) -

WS/DSC 10 Base-T Interface(optional)

10 Base-T(transmission rate 2 Mbps)

(*exclusive use for WS)

10 Base-T(transmission rate 64 kbps)

Cluster Alarm(optional)

2 ch 2 ch

EOW: IDU-IDUEOW: ODU-IDUEOW: ODU-ODU

Available(PASOLINK MONITOR is used at ODU-ODU, ODU-IDU.)

ODU AGC MONITOR AvailableSystem composition 1+0, 1+1 (HS/Twin Path)Receiver BB switching Hitless SW (Switching Threshold: 10-6 to 10-12 selectable)Transmitter RF switching Power Mute SystemBB Loop Back Near End/Far End, Remote/LocalIF Loop Back Available (Local only)Frequency setting Setting available from IDU by PNMT, LCTTransmitter output setting Setting available from IDU by PNMT, LCTODU-IDC Cable Max.300 m (8D-FB), 450 m (12D-FB)PM (Performance Monitor) Conform to G.826External Alarm(See 6.7)

IDU ALMODU ALM

MAINTPS


- 23 -

6.2 IDU

Modulation type 32 MLCM 128 QAMSymbol frequency 41.51808 MHz 24.236883 MHzFEC Reed-Solomon

MLCMReed-Solomon

Transmission capacity 155.52 Mbps (STM-1)STM-1 interface Electrical G.703

Optical G.957 S-1.1

Interface Connector

Item Physical Electrical

IF signal in/out Type N female -STM-1 electrical IEC169-13 (1.6/5.6) ITU-T G.703STM-1 optical FC/PC optical connector ITU-T G.957Ethernet (MAIN) RJ45 10 Base-T/100 Base-TXEthernet (SC/WS) RJ45 10 Base-TWS D-sub 9 pin ; (female) ITU-T G.703Cluster ALM IN/OUT High Density D-sub 15 pin ; (female) -PS IN 4 pin (+, - ) -ALM output (Form-c) D-sub 25 pin ; female -Service channel D-sub 37 pin; female ITU-T G.712 (VF), V11 (DSC)LCT RJ45 RS-232CPNMS port RJ45 V11, Ethernet (10 Base-T)PNMT port RJ45 RS-232C

6.3 Service Channels (Please see 4.2 Service Channel for available channels)

1) DSC/ASC (VF)

DSC (Please see 4.2 Service Channelregarding available channel)

ASC

Circuit : 4wFrequency Band : 0.3 - 3.4 kHz

Type V11 : 64 kbps Sync. (contra/co- directional selectable)

Level : -6 dBm (600 ohms) nominal

2) Wayside (only in case of 32 QAM) (see 4.2)

E1 or DS1 is set at shipping from factory.

E1 DS1Bit rate 2.048 Mbps +/-50 ppm 1.544 Mbps +/-130 ppmInput/output level 2.37 Vo-p / 75 ohms 3.0 Vo-p / 100 ohms

3.0 Vo-p / 120 ohmsImpedance 75 ohms unbalance

120 ohms balance100 ohms balance

Code format HDB-3 B8ZS or AMI

3) EOW

EOW : ODU-IDU/IDU-IDU/ODU-ODU party line connection with head set (PASOLINK MONITOR (optional) is used at ODU-ODU/ODU-IDU.)

4) Cluster ALM

Auxiliary alarm transmission


- 24 -

6.4 General

1) Power Requirement

Type 1 48VDC (36V to 60V)Type 2 24VDC (20V to 60V (option))

2) Power Consumption

1+0: 1+1:

6 8 GHz 75 W 150 W11 38 GHz 55 W 110 W

(typical) (typical)

3) Temperature Range

Guaranteed operation IDU : -5C to +50C

ODU : -33C to +50C

Workable operation IDU : -10C to +55C

ODU : -40C to +55C

Transport and storage IDU : -40C to +70C

ODU : -40C to +70C

4) Relative humidity

IDU : Less than 90% at 50C (Non-condensing)

ODU : 100% applicable

5) Altitude

Up to 4,000 m

6) Interconnection between ODU and IDU

Interconnection : Single coaxial cable/Impedance = 50 ohmsType of cable : 5D-FB, 8D-FB, 10D-FB, 12D-FB or Equivalent cable

Signals : IF signal, alarms control, monitoring

power source, and, orderwire

Maximum cable length* : 150 m (5D-FB)

300 m (8D-FB)

350 m (10D-FB)

450 m (12D-FB)

Cable equalization : Automatic level equalization

Note* : In case of hitless protection, set each length of two IF cables to same and not to exceed 100 meters.


- 25 -

7) Mechanical Dimension

ODU : 240(W) x 243(H) x 124(D) : Approx. 5 Kg (Type 1)

: 260(W) x 410(H) x 190(D) : Approx. 10 Kg (Type 2)

IDU 1 + 0 : 482(W) x 44(H) x 292(D) : Approx. 5 Kg*

1 + 1 : 482(W) x 133(H) x 300(D) : Approx. 13 Kg*

Note*: Including option panelNote : Salt damage

In case of operating in the sea or around the coast area (within 3 km from coastline), measure must be taken for the ODU against salt damage. Please ask NEC for countermeasure.

6.5 Events

Alarm Events for 1+0 system

Event Event conditions ALM indicationLED

LOS Input signal lost (Input STM-1 signal) LED on Module panelLOF Frame synchronization lost (Input STM-1 signal) IDU ALM and LED on Module

panelINTFC ALM STM-1 interface unit failure, Loss of output STM-1 signal IDU ALM and LED on Module

panelBER (RX) ALM Excessive BER

BER degraded worse than preset value (10e-3 to 10e-5)

IDU ALM

MOD ALM TX side alarm includes unit failure, IF output signaldegraded.

IDU ALM

DEM ALM RX side alarm includes unit failure, IF signal input lost. IDU ALMWS ALM Unit fail, WS input signal lost. IDU ALMTX PWR ALM ODU transmitting power decreased ODU ALMTX IN ALM Receiving TX IF signal level decreased ODU ALMRX IN ALM Receiving signal level decreased ODU ALMAPC ALM ODU APC loop is out of lock ODU ALMMAINT ALM LCT set to MAINT status MAINT

6.6 Indication

LED Indication on the equipment front

Failure indication of the equipment unit to be replaced.

1+0 Equipment

LED indication Condition Color

MAINT During Maintenance Yellow

ODU ALM ODU equipment failure Red

IDU ALM IDU equipment failure Red

PWR On power Green


- 26 -

1+1 Equipment

LED indication Condition Color

MAINT During maintenance Yellow

ODU ALM1 ODU No.1 Equipment fail Red

IDU ALM1 IDU No.1 Equipment fail Red

ODU ALM2 ODU No.2 Equipment fail Red

IDU ALM2 IDU No.2 Equipment fail Red

PWR1 No.1: On power Green

PWR2 No.2 : On power Green

TX1 No.1 TX output Green

TX2 No.2 TX output Green

RX1 No.1 RX selected Green

RX2 No.2 RX selected Green

Note: The same fails of No.1/No.2 indicate IDU ALM1 and IDU ALM2 at the same time. TX1/2 and RX1/2 indication available only in case of 1+1 IDU.

6.7 House Keeping Alarm/Control Interface

Data In/Data Out (DI/DO) for house keeping alarms or controls are available with LCT setting.DI/DO item number is changeable by setting LCT configuration.

DI DO Comments

6 ports 4 ports (Max) DI : DI interfaces are included in ALM/AUX connector.

DO: Refer to next page alarm output connection table.

Port condition

DI INPUT Logic : Normal OPEN (> 200 kohms) DO OUTPUT logic : Controlled from PNMS/T

Event CLOSE (< 50 ohms) Interface circuit : Relay Form C

Interface circuit : Photo coupler with bias circuit Maximum Current : 0.2 A

OUTPUT Device : Indicates Status on PNMS/T Maximum Voltage : 100 V (AC + DC)

.

+3.3 V +3.3 V

Open

Close

Event Close

Relay

Event Open

Event Close

COM


- 27 -

6.8 Alarm Items

Alarms outputs are available to connect to RL1 to RL11.

Alarm output connection to RL( ) is changeable by LCT.

Summarized external alarms (Form-C)EventConnector ALM Connector AUX/ALM

RL1 RL2 RL3 RL4 RL5 RL6 RL7 RL8 RL9 RL10 RL11

MAINT - - - - - - - - - -PS ALM - - - - - - - - - -CPU ALM - - - - - - - - - -ODU ALM1 - - - ODU ALM2 - - - CBL ALM1 - - - CBL ALM2 - - - TX PWR ALM1 - - - TX PWR ALM2 - - - TX IN ALM1 - - - TX IN ALM2 - - - RX IN ALM1 - - - RX IN ALM2 - - - APC ALM1 - - - APC ALM2 - - -

IDU ALM1 - - - IDU ALM2 - - - MOD ALM1 - - - MOD ALM2 - - - DEM ALM1 - - - DEM ALM2 - - - Sub INTFC - - -

MAIN INTFC - - -

BER ALM1 - - - BER ALM2 - - -

STM-1 LOS - - -

HK-OUT1 - - - - - - - - - - HK-OUT2 - - - - - - - - - -HK-OUT3 - - - - - - - - - -HK-OUT4 - - - - - - - - - -

Note: marks are set at factory. marks are range for selection.


- 28 -

6.9 Performance Monitoring/Metering Items

Item Description RemarksOFS Sum of out of frame seconds MUX/RADIO directionBBE Sum of the background block error MUX/RADIO directionES Sum of the errored seconds MUX/RADIO directionSES Sum of the severely errored seconds MUX/RADIO directionUAS Sum of the unavailable seconds MUX/RADIO directionTX PWR Transmitter output power Metering itemRX SIGNAL LEVEL Receiver input level Metering itemODU PS IN VOLTAGE ODU input voltage Metering itemBER MEASUREMENT Bit error rate Metering item

Control Item

IF Loop Back Baseband Loop Back (near end) Base band Loop Back (far end) Modulation off (CW control) TX Power mute TX/RX compulsive switching

MTD-PL-032/1401005 NEC Coporation, Tokyo, Japan

nec_mtd pl 028 (pasolink+ stm 1)

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