2. nec microwave equipment training-20080219-a

MICROWAVE EQUIPMNT TRAININGMICROWAVE EQUIPMNT TRAINING

EQUIPMENT INTRODUCTION

Xi’an NEC Pasolink Introduction

Application/Solution

Pasolink is Point to Point DMW transmission system

MUX

Satellite

Fiber-optics cable

Radio link

Coaxial cable

MUX


Application for Mobile Network

MSC : Mobile switching centerBSC : Base station controllerBTS : Base transceiver station

BSC

MSCPSTN BSC

.....

MSC

3000S

BSC

BSC

BTSBTS

BTS

BTS

BTSBTS

BTS BTS

BTS

BTS

BTS

BTS

BTS

BTSBTS

BTS

BTS

BTSBTS

BTS

BTS

BTS

BTS

BTS

BTS

BTS

PASOLINK

PASOLINKBTS

PASOLINK

BTS

BTSBTS

PASO+

BTS

BTS

BTS

BTS

BTS

BTS

PASO+

PASO+

PASO+


Application for Cellular Network


Ethernet Application (1)


General Introduction

A narrow band MW relay system, is easy to install, offerssystem flexibility and is a field proven to be very reliable.

Covered frequency: 7/8/13/15/18/23/26/38GHz.Transmission capacity: 2/4/8/16×2MB or with two 10

Base-T/100Base-TX plus additional service channels.1+0 Unprotected/1+1 Protected system


Feature(1)

ADVANCED TECHNOLOGIES AND SUPERB PERFORMANCE• MMIC, HIC AND VLSI• Single chip modulator/ demodulator (Full digital)• Square-root Nyquist Roll shaping filter• High reliability• Low power consumption• Additional Main Interface 10 Base-T/100 Base-TX (Option) HIGH SYSYTEM GAIN• QPSK Technology• High performance LNA-MIX ( Superior receiver sensitivity)• Allows small antennas and reducing system cost FREQUENCY AGILITY AND EASY TUNING• Frequency tunable without changing RF filter on sub-band basis• Field tunable local oscillators (Synthesizer)• Sub-band changing by simply replacing filter


Feature(2)

CONFORMITY WITH ANSI, ITU-U, ITU-T AND ETSI STANDARDS)

EASY AND QUIK INSTALLATION• Very compact and light• Only one coaxial cable interconnection• Automatic cable equalization• Different mounting methods for IDU, ODU and Antenna• Easy antenna pointing adjustments (RX level monitor point in ODU)

TX POWER CONTROL• Automatic Transmit Power Control (ATPC) or Manual Transmit Power

Control (MTPC)• Variable : 0 to 30dB , in 1 dB steps(13-38GHz) (For V4 ODU 7-38GHz)

0 to 10dB, in 1dB steps(7-8GHz) (V3 ODU)• Fixed : 10 to 20dB Fixed attenuator can be attached to the 7-8 GHz

output port.


Feature(3)

SYSTEM FLEXIBILITY• (1+0) Unprotected or (1+1) protected• Hot Standby/Space Diversity/Twin Path system are available with Hitless

switch• Common IDU for different RF frequencies(7/8/13/15/18/23/26/38GHz)• Software variable transmission bit rates (Bit Rate free type)• Common ODU for different bit rates( 16х2, 8х2, 4х2, 2х2Mbit/s/10Base-

T/100Base-TX)• Wide input line voltage ± ( 20 to 60 ) V DC EASY MAINTENCE FACILITIES• Full front panel access for all cabling and user interface• Near End and Far End Base-band Loop back facilities• Remote monitoring of ODU operating condition from IDU• OW calling facility between IDU-ODU, IDU-IDU, and ODU-ODU• Pre-settable BER alarm point : 10-3, 10-4, 10-5 or 10-6 ( alarm and AIS

injection)• Local monitor and maintenance using Local Craft Terminal (LCT)• Continuous RSL monitoring using Local Craft Terminal (LCT)


Feature(4)

MULTIPLE SERVICE CHANNELS• Engineering Order Wire (OW)• Digital Service Channels-Two standard and two optional• Analog Service Channels-Two optional• NMS Service Channel for Pasolink Monitoring• WS or SC LAN

ELECTRO MAGNETIC COMPATIBILITY (EMC)• Complies with ETS 300385

PASOLINK NETWORK MANAGEMENT TERMINAL (PNMT) (OPTION)• User friendly operation as maintenance terminal• Link oriented monitor and control• Uses Windows XP/2000/98 with mobile PC


Feature(5)

PASOLINK NETWORK MANAGEMENT SYSTEM (PNMS) (OPTION)• User friendly operation• Uses Windows XP/2000/NT to ensure easy operation and

maintainability• Remote access and control of any PASOLINK Terminal in the network• Link oriented monitor and control ( both sides of a microwave link)• Multi level security• Event Logging• ITU-T G.826 Performance Monitor( Table/graph presentation)• SNMP Interface (Option)• Real-time monitor of Network Elements (NE)


Introduction---IDU(1+0)

•2MB x 4, Fixed Bit Rate system

•2MB x 4, Fixed Bit Rate system with 2 x 10/1 00Base T (X) LAN Interface



•2MB x 2/4/8/16 Bit Rate Free system

•2MB x 2/4/8/16 Bit Rate Free system with 2 x 10/100Base T (X) LAN Interface

Note: IDUs with 75ohm BNC interface are also available(2Mx4 and 2Mx8 fixed rate)


Front view 1+1 IDU 3U 4х 2MB fix rate

Front view 1+1 IDU 3U with LAN interface 4х 2MB fix rate


Note:1. IDUs with 75ohm BNC interface are also available (2Mx4 and 2Mx8fixed rate)

2.The SC LAN port is actually WS/SC LAN port


Front view 1+1 IDU 3U nх 2MB free rate (n=2/4/8/16)

Front view 1+0 IDU 1U with LAN interface nх 2MB free rate(n=2/4/8/16)

Introduction---IDU


I/O Board

D-sub-BNC Interface conversion panel (I/O Board)16 x 2 MB


Introduction--Protection system

Hot standby system

Hot standby and space diversity


Introduction--Protection system

Twin Path system


Introduction-- ODU

RF interface to Antenna IF connector to IDU RX LEV MON

Rear Side Front Side


V4 OUT DOOR UNIT- (7-38 GHz)


V4 ODU OUTLINE


ODU Mounting Configuration

13-38 GHz Remote Mounting of1+0 PASOLINK ODU

ODU

ODU bracketwith WaveguideAdapt

Flexiblewaveguide

7/8 GHz Remote Mounting of1+0 PASOLINK ODU

Note:7/8 GHz ODU has Waveguide Interfaceas Option



13 - 38 GHz Mounting of the 1+1 PASOLINKODU (One Antenna with Hybrid Combinerunit)

13 - 38 GHz Mounting of the 1+1PASOLINK ODU (Two Antennas)



13-38 GHz Remote Mounting of 1+1PASOLINK ODU

13-38 GHz Remote Mounting of 1+1PASOLINK ODU with two antennas



7/8 GHz Mounting of 1+1 PASOLINK ODUwith Hybrid Combiner and one antenna

7/8GHz Hybrid Combiner ofthe 1+1 PASOLINK System



7/8 GHz Mounting of 1+1 PASOLINKODU with two antennas

13-38 GHz Direct Mount Dual PoleSystem



FlexibleWaveguide

ODU Pole Mount Bracketwith Waveguide Adapter

13-38 GHz Remote Mount DualPole System

7/8 GHz Remote Mount DualPole System



Direct Mounting on Antenna

Remote Mounting with Waveguide or CoaxialCable

1+1 system with Hybrid Combiner / Divider

2+0 system with Dual Polarization Antenna


V4 IDU

1+0 (NON PROTECTION) 1+1 (Protection) IDU


PASOLINK V4 IDU (1/3)

1. IF connector (to ODU)

2. 2Mbps interface (CH 9 to CH 16): impedance selector switch (75 or 120 ohms)

3. LAN Interface for main traffic: Port 1 and Port 2 (Optional)

4. WS/LAN: optional port for Wayside In/Out or 10BaseT

5. NMS LAN: for PNMS with LAN interface

6. Engineer’s Orderwire (EOW): receptacle for EOW headset

7. CALL: call buzzer for calling the opposite site of the transmission path

1

2 3 4 5 6 7

8. RESET: CPU reset switch for IDU

8



9. LED:PWR : that the power switch is on (Green)

MAINT: for the purpose of maintenance (Yellow)

ODU : that the ODU alarms occur (Red)

IDU : that the IDU alarms occur (Red)

10. FG : connecting Frame Ground terminal

11. ESD: Connecting terminal for Electro Static Discharge

12. 2Mbps interface (CH 1 to CH 8) ): impedance selector switch (75 or 120 ohms)

13. ALM/AUX ALM: connector for parallel alarms (relay contact)connector for Data Input / Data Output

10 11 12 139



14. OW / DSC / ASC(1) Order wire(2) Digital and Analog (VF) service channel

15. NMS / RA: for PNMS or remote access Local Craft Terminal (None PM Card)

16. LA Port: connector to PC for local access Local Craft Terminal or PNMT

17. Fuse: for primary DC line (be inserted in each plus and minus line)

14

18. 20SW : power switch

19. DC IN: connector for DC power in.

15 16 17 18 19


V4 IDU(1+1)

1 2 3 4 5

6 7 8 9

1. OPR SEL No.1-AUTO-No.2 switch: Enables channel switching depending on thesetting position in maintenance conditions.

2,3,4,5,6,7,8,9: OPR/ALM LEDs indicators


Theory of Operation(1)

Three Main sub-systems the Indoor Unit (IDU), theOutdoor Unit (ODU) and the Antenna

System block diagram



Basic block diagram of IDU



IDU 1+0 block diagram


Performance(1)


Performance(2)


Performance(3)


Performance(4)


Performance(5)


Performance (6)


Interconnection ( ODU and IDU)


Service Channels

Pasolink V4 uses six service channels in its radio overhead fram

Service Channels can be connected back-to-back at repeater station


V4 IDU Options• SC LAN INTERFACE: 10 BASE-T (TRANSMISSION RATE 64Kbps)• WS INTERFACE (G703): 2.048 Mbps G.703• WS INTERFACE (LAN): 10 BASE-T (TRANSMISSION Rate 2 Mbps)• ALM INTERFACE : 2 CH EXTERNAL DRY CONTACT EXTENSION• ASC INTERFACE: 2 CH 0.3-3.4 KHz VOICE FREQUENCY

TRANSMISSION• DSC INTERFACE: 2 CH 9.6 Kbps RS-232C OR RS-422 SELECTABLE• 64K INTERFACE (G.703): 1 CH 64 Kbps TRANSMISSION• 64K INTERFACE (V11): 1 CH 64 Kbps TRANSMISSION• PM CARD(RS-232C): PNMS INTERFACE CARD WITH RS-232C FOR PC• PM CARD(LAN): PNMS INTERFACE CARD WITH 10BASE-T FOR PCNote:• Optional cards cannot be changed without interrupting the main traffic.• When SC LAN option card is mounted, it is not possible to mount ASC,

DSC, ALM and WS interface cards. 64k option card is available witheither G.703 or V11 interface

• PM card is available with either RS-232C or LAN interface


Option cards


IDU Interfaces (1)

NEC PASOLINK SYSTEM HAS THE FOLLOWING ITU-T STANDARDINTERFACES DIGITAL SIGNAL INTERFACES

• Signal Rate Fix Rate : 4x2 Mbp/s and 2x10/100BaseT(X)• Rate Free : 2/4/8/16 x 2 Mbit/s and 2x10/100BaseT(X)• Interface HDB-3 (ITU-T G.703)• Impedance 75 Ohms / 120 Ohms (selectable)• Connector 2 MB :D-sub (75/1 20 Ohms)• 2x10/100Base-T(X) : RJ45• Wayside 1x2 Mbit/s (option in 16x2 Mbit/s ) (75 or 120 ohms

selectable)• In the case of Nx2 Mbit/s systems, each I/O port is independent ,therefore

the 2 Mbit/s signal can be used for different applications- such as relaying2Mbit/s trunk line or video conferencing.

PARALLEL ALARM INTERFACE• Interface Relay contact (Form-C)• Connector D-Sub (named ALM/AUX ALM)


IDU Interfaces (2) MAIN INTERFACE, ETHERNET (1 0/1

00BASE-T(X)• Type :• IEEE 802.3 10Base-T IEEE 802.3u/1

00Base-TX (Auto sensing or fixed)• Port Number and Interface:• 2 (Each port is separated ) RJ45• Flow Control:• 802.3x Full Duplex or Half Duplex

(Backpressure)• Forwarding Mode: Store-and-

Forwarding• Interface card can be used as Ethernet

Bridge compliant with IEEE 802.3• Transmission Length: Category 5, Max

100m• Transmission Rate:• 2Mbps to 32 Mbps (selectable)

Depends on the system


E1 and LAN Bandwidth Allocation (1)


E1 and LAN Bandwidth Allocation (2)


E1 Interface


E1 Impedance


Automatic TX Power Control (1)

The Automatic TX Power Control (ATPC) function automaticallyvaries the TX output power according to path conditions.

ATPC provides the following advantages:1. Improvement in up fading characteristics2. Improvement in residual BER characteristic3. Reduction of interference to intra system4. Reduction of interference to inter system The ATPC Control can be used in several configuration:

ATPC-ATPCMTPC-ATPCATPC-MTPC


Automatic TX Power Control (2)

ATPC block diagram


Protection switching (1)

Protection switching in Pasolink (1+1 ) system has severalswitching priorities:

Priority 1: Manual switching ControlManual switching is carried out by selecting from the front panelOPR SEL SW [No.1–AUTO— No.2] When switched from here bothTX and RX sides switches at the same time.

Priority 2: Remote switching ControlSwitching is initiated from external equipment (LCT/PNMT)

Priority 3: Automatic switching controlWhen the OPR SEL SW is set to Auto position, for any alarm in theonline equipment, traffic will be switched to the standby equipment

automatically. TX and RX switchover are performed independently.


Protection switching (2)


Orderwire Communication

Following Order-Wire communications are possible:Communication between Local IDU and Local ODUCommunication between Local IDU and Remote IDUCommunication between Local ODU and Remote IDUCommunication between Local ODU and Remote ODUWhen back-to-back connection for order wire is provided,OW communication between different hops are possible.

Note: When the “Call”button onthe IDU is pressed the buzzersounds on the remote IDU andall the other IDUs connectedthrough back-to backconnections.


OW/Rx Level Monitor ( Optional )


INDICATORS/SWITCHES/CONTROLS


Pasolink connectors for 2MB×16 system


IDU(1+0) CONNECTORS


IDU(1+1) CONNECTORS


ALM/AUX CONNECTORS


OW/DSC/ASC CONNECTORS


Password:

Password Change:

1.Setting

2.Maintenance

3.Monitoring

4.Exit

LCT--MENUS

Setting

1.Bit rate (16x2MB)2. AIS RCVD alarm/status3. AIS SEND alarm/status4. TX/RX frequency5. TX power ctrl6. Main channel usage 1-167. BER alarm threshold8. Frame ID9. WS channel usage10. DSC111. DSC212. DEM invert13. Alarm table14. Next items00. Menu99. Exit

Maintenance

Main

tenan

ceM

onito

ring

1. MAINT2. FE loop back ctrl 1-163. NE loop back ctrl 1-164. BER ALM >> AIS5. CW6. Power mute7. ATPC manual ctrl00. Menu99. Exit

(1+0)

(1+1)

1. Monitoring voltage2. Monitoring voltage (con mode)3. Alarm/Status4. Inventory00. Menu99. Exit

1. to 5. same as 1+06. Power mute17. Power mute28. TX SW ctrl9. RX SW ctrl10. ATPC manual ctrl00. & 99. same as 1+0

TXp

ower

ctrl

1. ATPC/MTPC2. MTPC TX power3. ATPC TX power range4. ODU ALM mode5. RX threshold00. Menu99. Exit

Next

Item

1. System configuration2. LAN setting3. Channel usage error00. Menu99. Exit

LAN

setting

1. Port1 setting2. Port2 setting3. FE link down00. Menu99. Exit

Alarm

Table

INPUT LOSS AIS RCVDAIS SEND OUTPUT LOSSWS INPUT LOSS WS AISRCVD WS AIS SENDWS OUTPUT LOSS LANINTFC ALM TX CLK LOSSRX CLK LOSS FSYNCALMHIGH BER ALM LOW BERALM BER ALMMOD ALMDEM ALMOPR ALMTX PWR ALM RX LEVALM APC 1 ALMAPC2 ALMIF INPUT ALM MAINTTX SELRX S ELMDP CPU ALM

IDU

OD

UINPUT LOSS 1-16CHANNEL USAGE ERROR 1-16AIS RCVD 1-16AIS SEND 1-16OUTPUT LOSS 1-16LAN INTFC ALMWS INPUT LOSSWS AIS RCVD WS AIS SENDWS OUTPUT LOSSTX CLK LOSSRX CLK LOSSFSYNC ALMHIGH BER ALMLOW BER ALM BER ALMMOD ALMDEM ALMMDP CPU ALM

TX PWR ALMRX LEV ALM

APC 1 ALMAPC2 ALM

IF INPUT ALMMUTE

TX FREQ CHRX FREQ CH

IDU

OD

U

Manufactured dateSoftware versionBit rateOption moduleManufactured dateSoftware versionBit rateRF bandSub bandStart frequencyShift frequencySerial numberCH separation

1.Thoughtput

2.Mode

3.Flow ctrl

4.Framing

5.CAS

6.CRC

7.Collion Report

00.Menu

99.ExitP

ortsettin

g

TX power :*.**RX level :*.**

2. nec microwave equipment training-20080219-a

Documents

75ohm bnc

lan bandwidth

78 ghz mounting

impedance

2mx8 fixed

local craft

v4 odu outline

odu mounting