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S series introduction
120S-II Solution


  ZYEQ-120S-II is an integrated optical-electrical fiber transmission device based on the VLSI ZYIC-016. It is designed with 120-channel transmission capacity in 4 E1 channel. It is suitable for small capacity switches networks, user ring networks, mobile base stations, private networks, DDN networks, etc.  




Large scale ASIC utilized, low power consumption and high reliability.


E1 G.703 interface remote loop-back testing available.


1 service-phone channel.

Power supply: DC-48V or AC 220V, in some extraordinary case, ±24V available too.

Local and remote status alarming.




I S optic port:


    Code pattern: CMI


    Code Rate: 33.79Mb/s


    Transmit Optical Power: LD, >= -10dBm


    Receive Sensitivity: <= -38dBm


    Optic Fiber connector: FC/SC model


4 G.703 ports: BNC 75/120 ohm


Service Phone port: Rj11.


1 U Chassis meets standard 19Ħħ rack.


Dimension: 483 × 210 × 44.5 ( mm )


Power supply:


    -48Vdc, DC range: -36Vd c ~ - 72Vdc


    Or 220 Vac, AC range: 180V ~ 260V


Extraordinary Case:


    -24Vdc, DC range: -18Vdc ~ - 36Vdc


    +24Vdc, DC range: 18Vdc ~ 36Vdc


Ripple: Vpp <= 200mV


Consumption <= 10W





figure1.1, point to point link
(room in)


figure1.2, AS Access device at the margin of SDH backbone transmit network, transmit voice and Data, connect PCM and DXC multiplxer equipment.
(room in)

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