IDM-480 16E1+100M PDH Optical Terminal

Overview
The IDM-480 broadband optical terminal is a point-to-point optical transmission device developed with VLSI technology. It implements multiplexing and optical transmission of 16 E1 channel groups and 4 100M wire-speed Ethernet data channels on a compact single-board design, integrating the functions of a PDH optical terminal and a 100M Ethernet media converter. The IDM-480 optical terminal provides a network management interface and user auxiliary channels, with comprehensive alarm monitoring, high integration, low power consumption, stable performance, and ease of use. The 16E1 optical terminal is a converged product that combines traditional carrier-grade E1 optical terminals with Ethernet media converters.

The IDM-480 broadband optical terminal provides 16 E1 circuit interfaces and 4 10M/100M Ethernet interfaces, which can operate at 10M or 100M, in half-duplex or full-duplex mode.

The IDM-480 broadband optical terminal features complete alarm monitoring functions. Alarm indications include optical signal loss, frame synchronization loss, 1E-3 bit error rate, 1E-6 bit error rate, and interruption of each E1 tributary signal, in addition to Ethernet interface status indication. Besides reporting local alarm status, the remote alarm status can also be displayed on local LEDs via push-button control. The IDM-480 optical terminal supports selectable power supply modes of ~220V AC and -48V DC.

Key Features

• The optical terminal utilizes dedicated VLSI, providing transparent transmission of up to 16 E1 groups.
• The optical line rate is 155Mbps, with a default transmission distance of no less than 20km (special requirements must be noted for transmission distances greater than 40km or 60km).
• The E1 interface line code is HDB3; E1 jitter tolerance, transfer characteristics, and output jitter fully comply with ITU-T G.703, G.823, and G.742 recommendations.
• The optical terminal provides 4 100M auto-negotiation Ethernet interfaces, supporting auto-negotiation and operating in full-duplex/half-duplex mode.
• Comprehensive monitoring and alarm functions. Provides optical signal loss, optical frame synchronization loss, 1E-3 bit error rate alarm, 1E-6 bit error rate alarm, and E1 input signal loss detection. Front panel LEDs display specific alarm status; the device can also output alarm information.
• Supports E1 tributary remote loopback for easy device testing and management.
• Single-board design with standard 1U chassis.
• Selectable ~220V AC or -48V DC power supply, with optional redundancy between ~220V AC and -48V DC.

Interface Specifications and Technical Parameters
Optical Interface

• Optical fiber rate: 155Mb/s±50ppm
• Wavelength: 1310nm
• Output optical power: -2 to -11dBm
• Receiver sensitivity: better than -36dBm
• Receiver dynamic range: 34dB
• Connector type: FC/SC optional
  Ethernet Interface
• Operating mode: 10M/100M auto-negotiation, full-duplex/half-duplex
• Cable: crossover cable should be used when connecting to a PC; straight-through cable when connecting to a switch
• Standard: IEEE 802.3 10BaseT/(IEEE 802.3u 100Base-TX)*25/(IEEE 802.3z/ab
  E1 Interface
• Line code: HDB3
• Bit rate: 2.048kbit/s±50ppm
• Impedance: 75Ω (unbalanced interface)/120Ω (balanced interface)
  Power Supply
• AC 220V (165-260V), 50Hz
• DC: -48V, 1A
  Operating Environment
• Temperature: 0ºC to 45ºC
• Humidity: 90% (non-condensing)
  Storage Temperature
• Storage temperature: -20 to 70℃
  Power Consumption
• Total power consumption: <15W
  Device Specifications
• Dimensions: 19-inch 1U / desktop

Typical Applications