Home > Products > SDH
  SDH155

 

DESCRIPTION
 
  ZYEQ-155 SDH -MSTP is a compact model of SDH optical ADM device which is of modularization structure within a standard 19'' 1U rack and the quantity of its various modules in a configuration of a certain case increase or decrease proportionally depends on needs of users. It is available for users to be config, monitor, maintain and down load software for ZYEQ-155 SDH –MSTP remotely.  
   

 

 

FEATURE

 

OIU module : 2 155M standard SDH STM-1 Optical Interface, Optical Interface Unit ;

 

Optional 1 155M standard SDH STM-1 electrical interface to connect to SDH microwave equipment;

 

Tributary module and expansion board of E1 mapped unit( EMU) support 4E1, 8E1, 16E1, 21E1, 32E1 and 63E1 ports depend on demands;

 

MCU module: Network management unit and Clock unit;

 

2 10M/100M auto-negotiate Ethernet interfaces in tributary side share channels of multiplex and can occupy configurable bandwidth from 2M to 100M.

 

4 RS-232 transparent asynchronous communication channels for the 3 rd party's communication.

 

Ability of Managing numbers of sub-networks;

 

Network management interface: Ethernet interface, local terminal and test RS-232 interface.

 

Reliable sub-network connection protection(SNCP),and the protective switch over on SF(Signal Fail) or SD(Signal Degradation) as option;

 

Optional dual optical interface (1+1) protection ;

 

 Alarm indicating signal( AU AIS) ? B1 and B2 error embedded for maintenance in management unit;

 

Both local and remote loop-back test in the optical ports as well as E1 ports;

 

Configuration of the DTMF, ringing and phone number in service phone.

 

 

SPECIFICATIONS

 

STM-1 Optical port

  Bit rate: 155.520Mb/s work wavelength:1310nm, 1550nm

  emitted light power: 0~-5dBm ĘC8~-15dBm

  receive sensitivity: ĘC36dBm

Synchronous
clock interface

  abide by the G.703 suggestion:
  input/output reference clock) 2048kHz 4.6ppm

  2048kBits/s 4.6ppm

E1 Electric interface

  E4:
      Bit rate: 139.26Mb/s
      Code pattern: CMI
      Impedance: 75O(unbalance)

  E3:
      Bit rate: 34.368Mb/s
      Code pattern: HDB3
      Impedance: 75O(unbalance)

  E1:
      Bit rate: 2.048Mb/s
      Code pattern: HDB3
      Impedance: 75O(unbalance)

Clock holding sensitivity

0.37ppm(24 hours)

Power supply

-48Vdc ±20%

 
 

 

SOLUTIONS

 

 
simple frame
 
 
applications

© 2005 Zhengyou Company, Inc. All rights reserved.
E-mail:webmaster@zhengyou.com Tel :010-62362919