4 x E1 over Fiber Multiplexer
Product Description
NT-120 4 x E1 over Fiber Multiplexer
Overview
The NT-120, 4*E1 over fiber mupltiplexer(100M Ethernet interface is optional) is the multi-service fiber receiving system with the core of FPGA, which adopts special patent technique of reducing jitter、digital phase locked and clock extracted technique、2M interface preventing interference technique, etc. It is suitable for the situations of high request reliability and assistant function, such as the specialized networks of Mobile, Unicom, Electric Power, Army, Police, Highway and Aviation. 4E1+100M PDH can provide multi-interface of E1 and voice. The hardware adopts large scale FPGA, collecting code, decoding, message insertion and alarm, and make the circuit simple so as to improve the reliability of the equipment.
Characteristic
Offer 4*E1 (2048kbps) interfaces, two styles unbalance interface
and balance interface
Offer an Ethernet interface of 10/100M、full/half duplex
auto-negotiation (optional)
adopt special patent technique of reducing jitter, which index is
superior to international standard E1 interface adopt digital phase locked and clock extracted
technique
Double power supply, back up each other
Power supply are selectable in -48v// 220v
Highly integrated hardware circuit, power consumption is less than 10W
LED indicators and voice alarm show working status
The circuit is designed compactly, the equipment works steadily
Technical parameters
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Electric interface
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Data rate: 2.048Mbps
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Tolerance: ±50ppm
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Line code: HDB3
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Transmission capacity: 4*E1
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interface impedance: 75Ω/120Ω
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Electric characteristic: comply with ITU-T G.703 standard
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Jitter transferring characteristic: comply with ITU-T G.823 standard
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Input jitter toleration: comply with ITU-T G.823 standard
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Optical interface
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Line code: 1B1H
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Light source: LD
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Output optical power: ＞-12dBm
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Receiver style: PINFET
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Receiving sensitivity: ＜-36 dBm BER≤10-10
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Light linker style: FC
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Central light wavelength: 1310nm/1550nm
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Ethernet interface
(optional)
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Standard: comply with IEEE 802.3
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Data rate: 100Mbps
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Interface rate: 10/100Mbps auto-negotiation
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Interface mode: Half/full duplex auto-negotiation
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Interface connector: RJ45 connector
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Power supply
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Voltage: AC180V~240V; DC –48V
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Power consumption: ≤10W
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Environment
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Working temperature: -25°C~50°C
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Storage temperature: -40°C~+70°C
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Relative humidity: 5%~95 %
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Weight
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1.5Kg
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Size
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482.6mm×135mm×44.4mm
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Advanced and compact design that performs E1 multiplexing & de-multiplexing and provides a 16.896Mbit/s optical interface in a single unit. Built-in AC/DC or DC/DC converter and supervisory microprocessor Digital clock data recovery for E1 signal Provides visible and audible alarm indication Low power consumption Order wire channel for end to end installation and maintenance Auxilary data channel in optical line code Centralized network management with the Topone NMS High reliability Flexible installation in various mechanical constructions. Technical Specification ◆ Electrical (E1 interface) Channel capacity: 4 channels Bit rate: 2.048Mbps±50ppm Line code: HDB3 Nominal impedance: 75Ω unbalanced / 120Ω balanced Jitter character: ITU-T G.742,G.823 compliant ◆ Optical Bit rate: 16.896 Mbit/s Line code: 1B1H Optical source: LD Transmitter power: ≥－9dBm Receiver Type: PINFET Receiver sensitivity: ≤－40dBm（BER≤10-11） Wavelength: 1310 / 1550nm Optical connector: FC/SC
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