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NEC PASOLINK+ Manual

NEC PASOLINK+ Manual

6-38 ghz 155 mb digital radio system
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© 2002 NEC Corporation
PASOLINK
6-38 GHz 155 MB DIGITAL RADIO SYSTEM
(1 + 0 / 1 + 1 SYSTEM)
This document describes the current version of NEC standard equipment. If
there is any conflict between this document and the System Description and/or
the Compliance statement, the latter will supersede this document.
The specifications or configuration contained in this document are subject to
change without notice due to NEC's continuing design improvement.
+
NEC Corporation
MTD-PL-028
141005

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  • Page 1 6-38 GHz 155 MB DIGITAL RADIO SYSTEM (1 + 0 / 1 + 1 SYSTEM) This document describes the current version of NEC standard equipment. If there is any conflict between this document and the System Description and/or the Compliance statement, the latter will supersede this document.

  • Page 2: Table Of Contents

    MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM TABLE OF CONTENTS LIST OF ABBREVIATIONS..…...….…....…....…..…..………….…..ii INTRODUCTION ....................... 1 FEATURES......................... 3 Advanced Technologies and Superb Performance ............3 High System Gain......................3 Easy and Quick Installation ..................... 3 Common platform architecture ..................3 Frequency Agility and Easy Tuning ................. 3 TX Power Control ......................

  • Page 3: List Of Abbreviations

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 LIST OF ABBREVIATIONS Alternate Mark Inversion Ethernet LAN specification along IEEE802.3 Antenna Forward Error Correction Automatic Phase Control Filter ATPC Automatic Transmitter Power Control FOTS Fiber Optical Transport System Attenuator HDB3 High Density Bipolar order 3 B8ZS Binary 8-Zero Substitution Hybrid Integrated Circuit...
  • Page 4 MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM MMIC Monolithic Microwave R-BER Residual Bit Error Rate Integrated Circuit Radio Frequency Modulator RFCOH Radio Frame MODEM Modulator Demodulator Complementary Overhead MTPC Manual Transmitter Power Remote Control Reed Solomon coding Multiplexer Received Signal Level Network Element RSOH Regenerator Section Overhead...
  • Page 5 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 This page is intentionally blank. - iv -...

  • Page 6: Introduction

    (32-QAM or 128-QAM), and have a transmission capacity of OC3 or STM-1. In addition to the PASOLINK systems for short distance links, NEC offers a complete product line 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.
  • Page 7 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Type 1 Type 2 11-38 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.

  • Page 8: Features

    FEATURES Advanced Technologies and Superb Performance Throughout the SDH radio system, NEC’s own advanced technologies are used. Intensive use of Microwave Integrated Circuits (MIC’s) and Hybrid IC’s (HIC’s) make the TRP durable and compact. Also, custom made large-scale integrated circuits (LSI’s) are applied. For example, a new digital MODEM is incorporated in a single LSI chip, specially developed by NEC for the radio equipment.

  • Page 9: Maintenance Facilities

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Maintenance Facilities • Pre-settable BER alarm point: 10 , 10 , 10 • IF, Baseband (near end, far end) loop back (without external equipment) • Remote monitoring of ODU operating condition on IDU • Calling facility between IDU’s Service Channels (Please see 4.2 Service Channel for available channel) •...
  • Page 10 MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM Figure 3(b). Ways to Mount the 1 + 1 PASOLINK using two Antennas - 5 -...
  • Page 11 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 This page is intentionally blank. - 6 -...

  • Page 12: Reliability And Quality

    VLSI, MIC and MMIC technology for all-solid-state circuitry from data input to RF output. NEC plants are located all over the world, and quality control is carefully monitored in every manufacturing step, such as parts selection, assembly, adjustment and testing. NEC Quality Controls employing Zero Defect and Value Engineering Techniques extend to every aspect of production and inspection in accordance with stringent Total Quality Control programs.
  • Page 13 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 This page is intentionally blank.

  • Page 14: Interface

    MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM INTERFACE The NEC PASOLINK system has the ITU-T standard interface conditions as listed below: 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...

  • Page 15: Service Channel (Sc)

    : 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) Alarm Signal Interface • Interface : Relay Contact (Form-C) •...

  • Page 16: Design Considerations

    MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM 5. DESIGN CONSIDERATIONS 5.1 Protection Capability PASOLINK provides a protection switching system of Hot-standby protection (1 + 1), and twin-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.

  • Page 17: Indoor Unit (Idu)

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 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 and EOW signal •...

  • Page 18: Other Tools And Materials

    LCT connects to the IDU. The LCT can control all functions and measures all monitor levels. 2. PNMS NEC can provide an Element Network Management tool (PNMS: PASOLINK Network Management System). These tools can be used for maintenance and performance ®...

  • Page 19: Option Panel

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 5.6 Option Panel Option panel list Slot Panel STM-1e Electric Interface STM-1/OC3 Optical Interface (S-1.1) Main slot STM-1/OC3 Optical Interface (WDM Monofiber TX:1.3um RX:1.5um) STM-1/OC3 Optical Interface (WDM Monofiber TX:1.5um RX:1.3um) Ethernet 10 Base-T/100 Base-TX (2ch) Wayside 2.048 Mbps 75 ohms balance Wayside 2.048 Mbps 120 ohms unbalance Wayside 1.544 Mbps 110 ohms unbalance...
  • Page 20 MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM Figure 4-1. PASOLINK - 1 + 0 System Block Diagram - 15 -...
  • Page 21 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Figure 4-2. PASOLINK - Hot-standby System Block Diagram - 16 -...
  • Page 22 MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM Figure 4-3. PASOLINK - 1 + 1 Twin-path System Block Diagram - 17 -...
  • Page 23 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Figure 4-4 PASOLINK - Hot-standby / Space Diversity System Block Diagram - 18 -...
  • Page 24 MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM TX first MIX RF CKT (Depend on frequency band) TX IF TX IF to/from to/from ANTENNA RX IF CTRL DC-DC CONV Figure 4-5. PASOLINK - ODU Block Diagram (a) 1+0 ODU (Type 2) (b) 1+0 IDU Figure 5.
  • Page 25 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Figure 6. Interconnection of ODU and IDU (1 + 0) - 20 -...

  • Page 26: Performance

    (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 4.2...
  • Page 27 PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 STM-1 (128 QAM)/(32 QAM) Power Supply Voltage ±36 to ±60V (EN60950) (±24V: OPTION) Power Consumption See 6.4 Ambient Temperature IDU : -5°C to +50°C ODU: -33°C to +50°C STM-1/OC3 Narrow band STM-1/OC3 SOH terminal RST mode IDU size 1+0: 1U...

  • Page 28: Idu

    MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM Modulation type 32 MLCM 128 QAM Symbol frequency 41.51808 MHz 24.236883 MHz Reed-Solomon Reed-Solomon MLCM 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)

  • Page 29: General

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 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 W 11 – 38 GHz 55 W 110 W (typical)

  • Page 30: Events

    Note*: Including option panel Note : 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. Events...

  • Page 31: House Keeping Alarm/Control Interface

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 1+1 Equipment LED indication Condition Color MAINT During maintenance Yellow ODU ALM1 ODU No.1 Equipment fail IDU ALM1 IDU No.1 Equipment fail ODU ALM2 ODU No.2 Equipment fail IDU ALM2 IDU No.2 Equipment fail PWR1 No.1: On power Green...

  • Page 32: Alarm Items

    MTD-PL-028/141005 PASOLINK 155 MB 1+0/1+1 SYSTEM Alarm Items Alarms outputs are available to connect to RL1 to RL11. Alarm output connection to RL( ) is changeable by LCT. Event Summarized external alarms (Form-C) Connector “ALM” Connector “AUX/ALM” RL10 RL11 • MAINT •...

  • Page 33: Performance Monitoring/Metering Items

    PASOLINK 155 MB 1+0/1+1 SYSTEM MTD-PL-028/141005 Performance Monitoring/Metering Items Item Description Remarks Sum of out of frame seconds MUX/RADIO direction Sum of the background block error MUX/RADIO direction Sum of the errored seconds MUX/RADIO direction Sum of the severely errored seconds MUX/RADIO direction Sum of the unavailable seconds MUX/RADIO direction...
  • Page 34 MTD-PL-032/1401005 NEC Coporation, Tokyo, Japan...

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