1 nl24x

NL24x 34 & 16x2Mb/s Radio relay equipment

NERA Networks ASkurs/felles/t_manual/16x2/ch01 Equipment Introduction.ppt nr.1 Rev. C

Transmission capacity

t 34.368 Mb/s480 digital telephone channels, 64Kb/s each

t 16 x 2048 Kb/s16 x 30 digital telephone channels, 64Kb/s each

t 1 x 2048 Kb/s protected or 2 x 2048 Kb/s unprotectedAdditional insert traffic (Wayside)

t 5 x 64 Kb/sOptional insert service channels

u 1 channel used for supervisory communicationu 1 or 2 channels available for service telephoneu 2 - 4 channels available for 64 kb/s adapters, V 11 or G 703



Frequency range

*measured after branching filters

CODE FREQ TX PWR*

NL241 7.425 - 7.725 GHz +28.0 dBm

NL242 4.4 - 5.8 GHz +26.5 dBm

NL243 1.7 - 2.3 GHz +29.0 dBm

NL245 7.725 - 8.5 GHz +27.5 dBm

NL248 12.75 - 13.25 GHz +24.0 dBm

14.50 - 15.35 GHzNL247 +21.0 dBm



SystemSystem optionsoptions

NOTE: Split-mount have 1+0, 2+0, 1+1 or Hot Stand-by configurationonly!

NL24X SERIES SYSTEM CONFIGURATIONS

TERMINAL

1 + 0 Space Diversity



1 + 1 Space Diversity, Frequency Diversity


Hot standby Space Diversity

ADD/DROPREPEATER






Hot standby Space Diversity

Split mount option available above 10GHzOptical fiber terminal options available



Operational features

t Integrated supervisory system, extended range of features

available via HHT, PC or Tele-Scada

t Automatic and manual 2 + 1 protection switching

t Occasional traffic on protection channel

t 2Mb/s insert channels, one channel if protected with adapter,

or two channels if unprotected

t 5 x 64kb/s service channels available

t Selective or collective service telephone



Technical specificationsGeneral:

Transmission Capasity

Input / output interface

34.368 Mb/s or 16 x 2 Mb/s

ITU-T Rec. G.703, HDB 3

System Configuration

Digital Service Channels

Omnibus Voice Circuit

External Alarm Collection

1+0, 2+0, 3+0, 1+1, 2+1, frequencyand space diversity, hot standby.Terminal or Add/Drop repeater

5x64kb/s, CCITT Rec. G.703/V.11.1x2048kb/s fully protected on 1+1 and2+1 systems or one 2048kb/s for each34Mb/s channel unprotected, all CCITT G.703 HDB3, 75 Ohm.

0.3 to 3.4kHz, PCM.

Max 7x16 Alarm inputsMax 7x4 Control outputs.



Technical specifications

Environmental ConditionsTemperature Range

Operational, Indoor

Within specifications, Indoor

Storage

-20 to -60 V DC

100 to 120 W dependingon service channelequipment configuration

-10C to +55C

-5C to +45C

-40C to +70C

Power Consumption from battery

PrimaryPower Supply

Battery Voltage

1+1 Frequency Diversity Terminal

Operational, Outdoor -20C to +55C

Within spesifications, Outdoor -20C to + 45C



C Extended range of looping possibilities:l Transceiver IF loop and modem loop

l Baseband looping on 34Mb/s and 2Mb/s

l Looping between bit-insert and bit extract

l 2Mb/s wayside loop-back

C Adaptive transmiter power control (ATPC),and manual transmitter output power control

C Internal PRBS generator and error check

C Manually controlled adding and dropping of 2Mb/s on repeaters

C CRC (Cyclic Redundancy Check) on all 2 Mb/s interfaces

Features



34 Mb/s 1+1 Radio Terminal

375kb/s V.11 bus

2048kb/s timeslot bus

34.368Mb/s

34.368Mb/s

ALARMADAPTER

UNIT

2048kb/s bus375kb/s bus 2048kb/s bus2048kb/s bus

FROM/TO 2Mb/s BITINSERT/EXTRACT

Ch 1/Ch P

BRANCHING

352kb/s

352kb/s

64kb/sADAPTER

UNIT

2048kb/s

UNIT

SERVICETELEPHONEEXPRESS

SERVICETELEPHONEOMNIBUS

SUPERVISORY&

64kb/sCHANNEL

DISTRIBUTIONUNIT

2Mb/s EXTRACT

2Mb/s EXTRACT

TRANSCEIVER UNIT BITINSERT/EXT/ACU

BITINSERT/EXT/ACU

Ch 1

Ch P

XMTR

RCVR

MODULATOR

MODEM UNIT

DEMODULATOR

BITINSERT

BITINSERT

BITEXTRACT

ACU Ch 1

ACU Ch P

2Mb/s INSERT

2Mb/s INSERT

BITEXTRACT

ALIGNMENT/SWITCH/HYBRID

HYBRIDSPLITTER

ALIGNMENT/SWITCH

XMTR

RCVR

MODULATOR

DEMODULATOR

TRANSCEIVER UNIT MODEM UNIT

ADAPTER



16x2 Mb/s 1+1 Radio Terminal

375kb/s V.11 bus

2048kb/s timeslot bus

2.048 Mb/s

ALARMADAPTER

UNIT

2048kb/s bus375kb/s bus 2048kb/s bus2048kb/s bus

FROM/TO 2Mb/s BITINSERT/EXTRACT

Ch 1/Ch P

BRANCHING

352kb/s

352kb/s

64kb/sADAPTER

UNIT

2048kb/sADAPTER

UNIT

SERVICETELEPHONEEXPRESS

SERVICETELEPHONEOMNIBUS

SUPERVISORY&

64kb/sCHANNEL

DISTRIBUTIONUNIT

2Mb/s EXTRACT

2Mb/s EXTRACT

TRANSCEIVER UNIT BITINSERT/EXT/ACU

BITINSERT/EXT/ACU

Ch 1

Ch P

XMTR

RCVR

MODULATOR

MODEM UNIT

DEMODULATOR

BITINSERT

BITINSERT

BITEXTRACT

ACU Ch 1

ACU Ch P

2Mb/s INSERT

2Mb/s INSERT

BITEXTRACT

16x2Mb/s MUX/DEMUX UNIT

HYBRIDSPLITTER

ALIGNMENT/SWITCH

XMTR

RCVR

MODULATOR

DEMODULATOR

TRANSCEIVER UNIT MODEM UNIT

DEMUX

MUX

12

16

12

16

Local ACU

375kb/s bus



Looping possibilities

TransceiverModulator/

Demodulator

Bit insert/Bit extract

ALIGN16x2 Muldex/

SWM

34 Mb/s(Align)

2 Mb/s

34 Mb/s

34 Mb/s

34 Mb/s(N x 2 Mb/s)

34 Mb/s(N x 2 Mb/s)

34 Mb/s (16 x 2 Muldex & SWM)



1+1 Radio Terminal 1+1 Radio Repeater

PWR

PW

R

ADAP TER

SUP

V,S

UBINSE

RTPW

R

PW

RTRA

NSCEIVE

RPR

OT

MO

DEM

PR

OT

C2 7 0

A DAP

TE RB

ITI NS/ EX

T,ACU

PRO

TM

ODE M

CH. 1

PW

R

PWR

ADAP

T ER

ADAPTER

ADAPTER

ADAPT ER

OM

NIBUS

EOW

BIT

I NS/ EX T,

ACUPR

OT

BIT

INS/EXT,

ACU

CH. 1

EXPR

ESSE

OW

SUP

V,S

UBINSER

TP

WR

PWR

T RANSC

EIVER

PRO

T

MO

DEM

CH. 1

MO

DEM

PR

OT

TRA

NSCE IVE

RCH .1

ADAPTER

ADAP T

ERB

ITI NS

/ EXT,

ACUCH

.1TR

ANS C

EIVERCH

.1

M C C2 7 0 M C

DDF PANEL

HOT-STANDBY SWITCH CONTROL

HANDSET EOW

OMNIBUS EOW & EXPRESS EOW

INDICATOR & CONNECTION PANEL

ALIGN.SW . & HYB., OR 16x2 Mb/s MUX/DEMUX,OR ADD/DROP SWITCH MATRIX UNIT

2Mb/s ADAPTER, 64 kb/s ADAPTER ORALARM ADAPTER UNIT

64 kb/s ADAPTER OR ALARM ADAPTER UNIT

PW

R

PWR

ADA PTER

ADAPTER

ADAP TER

ADAP TER

OM

NIBUS

EOW

BITI N

S/EX T,

ACUPR

OT

BITI N

S/EX T,

ACUCH

.1

EXPRESS

EOW

SUPV

,SUB

I NSERT

PWR

PWR

TRAN

S CEIVER

PRO

T

MOD

EMCH

.1

MOD

EM

PRO

T

TRANS

CEIVE

RCH

.1

MCC270

64 kb/s ADAPTER OR ALARM ADAPTER UNIT

2Mb/s ADAPTER, 64 kb/s ADAPTER ORALARM ADAPTER UNIT

ALIGN.SW . & HYB., OR 16x2 Mb/s MUX/DEMUX,

OMNIBUS EOW & EXPRESS EOW

HANDSET EOW

HOT-STANDBY SWITCH CONTROL

DDF PANEL

INDICATOR & CONNECTION PANELDIR 2DIR 1

1 nl24x

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