IDM-480 16E1+100M PDH Optical Terminal

Overview
The IDM-480 broadband network optical terminal is a point-to-point optical transmission device developed with VLSI technology. It realizes hybrid multiplexing and optical transmission of 16 E1 channels and 4 100M wire-speed Ethernet data channels with a simple single-board structure, 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 functions, high integration, low power consumption, stable performance, and easy operation. The 16E1 optical terminal is a product that integrates traditional carrier-class E1 optical terminals with Ethernet media converters.

The IDM-480 broadband network optical terminal can provide 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 network optical terminal has complete alarm monitoring functions. Alarm contents include optical signal loss, frame synchronization loss, 1E-3 bit error, 1E-6 bit error, and interruption of each E1 tributary signal, in addition to Ethernet interface status indication. Besides reporting local alarm status, the alarm status of the remote end can also be displayed via the local LED indicators using the button. The power supply modes of the IDM-480 optical terminal are ~220V and -48V, selectable.

Main Features

• The optical terminal uses a dedicated VLSI, providing transparent transmission of up to 16 E1 channels.
• The optical line rate is 155Mbps, with a default transmission distance of no less than 20Km (special notes required when the transmission distance exceeds 40Km or 60Km).
• The E1 interface line code is HDB3, and the 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 mode and operating in full-duplex/half-duplex.
• Comprehensive monitoring and alarm functions. Provides optical signal loss, optical signal frame synchronization loss, 1E-3 bit error alarm, 1E-6 bit error alarm, and E1 input signal loss detection. Panel LEDs display specific alarm status; the device can also output alarm information.
• Supports E1 tributary remote loopback function for easy device testing and management.
• The whole unit adopts a single-board design in a standard 1U chassis.
• ~220V AC or -48V DC power supply modes are selectable, and ~220V AC and -48V DC power supplies can also be mutually redundant.

Interface Specifications and Technical Parameters
Optical Interface

• Optical fiber rate: 155Mb/s±50ppm
• Wavelength: 1310nm
• Output optical power: -2～-11dBm
• Receiving sensitivity: better than -36dBm
• Receiving dynamic range: 34dB
• Connector type: FC/SC, selectable
  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)/120 (balanced interface)
  Power Supply
• AC 220V (165-260V), 50Hz
• DC: -48V, 1A
  Operating Environment
• Temperature: 0ºC~45ºC
• Humidity: 90% (non-condensing)
  Storage Temperature
• Storage temperature: -20～70℃
  Power Consumption
• Total power consumption: <15W
  Device Specifications
• Dimensions: 19-inch 1U/box type

Typical Applications