Features:

Total Design concept

• The NEC family of SDH system equipment features a highly compatible, unified design platform. 5000S microwave system technology is based on the longstanding integrity of NEC expertise. With its advanced integrated design, the 5000S accommodates higher rack density than other systems of its kind. The equipment comprises two main shelves on a single European Telecommunications Institute (ETSI) rack. Branching (BR) and Transmitter/Receiver Equipment (TRP) sections are built on the upper shelf, with Modulator/Demodulator Equipment (MDP) and Multiplexer (MUX) sections on the lower shelf.

Key specifications

• Frequency bands: 4 to 11 GHz
• Capacity:155.52 Mbps per system
• Modulation:64 QAM, 128 QAM
• Interface: STM-1 Electrical/Optical, GbE (with built-in MUX)
• SDH Termination: RST (MST available with built-in MUX)
• Configuration:
  • N + 0 (N: 1 to 10), N + 1 (N: 1 to 9)
  • Back to Back:
    2 x (N + 0) (N: 1 to 5),
    2 x (N + 1) (N: 1 to 4)
  • Repeater:
    2 x (N + 0) (N: 1 to 5),
    2 x (N + 1) (N: 1 to 4)
  • XPIC system:
    2 x (N + 1) (N: 1 to 4)
  • 1 + 1 Hot-Standby/Twin Path/Space
    Diversity
  • 2 x (1 + 1) Hot-Standby/
    Twin Path/Space Diversity (Repeater)
• SD Constitution: IF Combined
  (up to 3 antennas)
• Accommodation: Maximum 10 systems in ETSI rack including MUX
  • 1 - 5 sys (Natural cooling)
  • 6 - 10 sys (Long-life fan cooling)

Technical & Operational Merits

• Excellent Characteristics
  • Enhanced modem characteristics
  • Automatic Transmit Power Control
  • Automatic Protection Switch for optical interface
  • Adaptive Equalizer
    (Adaptive Time Domain Equalizer (ATDE) is applied.)
  • Space Diversity system, available to retrofit
  • Redundant configuration of XPIC equipment
• Improved Error Correction Performance with FEC
  • Low-Density Parity Check (LDPC) Codes are employed as a forward error correction (FEC) to ensure superior error correction performance.
• Abundant Digital Service Channels and Wayside Traffic
  • DSC: 1ch 64 kbps + 1ch 192 kbps or 4ch 64 kbps
  • WS: 1ch (128 QAM) 2 Mbps
    or 2ch (64 QAM) 1.5 Mbps
• Alarm, Status and Performance Monitoring
  • Built-in Performance Monitoring function
  • The operator can perform monitoring and control functions by using the NMT (Network Management Terminal), or by using a Network Management System (NMS).
• Built-in MUX for 5000S
  • NEC’s Small Multiplexers offer various types of traffic interfaces such as PDH, SDH and Gigabit Ethernet with flexible network configurations of linear, ring, multiple rings, etc.
• Conforms to Latest Standards (ITU/ETSI)

Frequency band:

• 4 to 11 GHz

Transmission capacities:

• STM-1 or OC-3 (155.52 Mbps, electrical or optical interface)
• Fast Ether or Gigabit Ether (with optional multiplexer)