4 x E1 over Fiber Multiplexer

Model:	NT-120
Brand:	N-net
Origin:	Made In China
Category:	Electronics & Electricity / Telecommunication & Broadcasting / Network Communications Equipment
Label:	E1 modem , E1 multiplexer , PDH
Price:	-
Min. Order:	2 pc

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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

Electric interface	Data rate: 2.048Mbps
	Tolerance: ±50ppm
	Line code: HDB3
	Transmission capacity: 4*E1
	interface impedance: 75Ω/120Ω
	Electric characteristic: comply with ITU-T G.703 standard
	Jitter transferring characteristic: comply with ITU-T G.823 standard
	Input jitter toleration: comply with ITU-T G.823 standard
Optical interface	Line code: 1B1H
	Light source: LD
	Output optical power: ＞-12dBm
	Receiver style: PINFET
	Receiving sensitivity: ＜-36 dBm BER≤10-10
	Light linker style: FC
	Central light wavelength: 1310nm/1550nm
Ethernet interface (optional)	Standard: comply with IEEE 802.3
	Data rate: 100Mbps
	Interface rate: 10/100Mbps auto-negotiation
	Interface mode: Half/full duplex auto-negotiation
	Interface connector: RJ45 connector
Power supply	Voltage: AC180V~240V; DC –48V
Power supply	Power consumption: ≤10W
Environment	Working temperature: -25°C~50°C
	Storage temperature: -40°C~+70°C
	Relative humidity: 5%~95 %
Weight	1.5Kg
Size	482.6mm×135mm×44.4mm

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