タイトルまたは説明

Global Tech GT-SDH***5A *3E1 SDH is the compact STM*1 level Synchronous Digital Hierarchy (SDH) transmission system compatible with ITU-T standard. It is designed as a modular system with two **5.**0Mb/s optical interfaces to provide an ultra-compact, cost-effective and high capacity platform. It provides fully cross-connect between all tributaries, and can be used as Terminal Multiplexer (TM) or an Add-Drop-Multiplexer (ADM) to build point-to-point, ring and chain transmission network.

Feature

# Achieve Multiplexing from *3 E1 to 2 STM*1 optical interfaces 

# 1U height, *9 Inch width standard

# Service interface

* Two STM*1 optical interfaces, SFP optical module (LC connector)

* Maximum *3 E1 interfaces compliant with ITU-T G.**3, optional unbalanced/ balanced interface

# System interface

*  Ethernet management interface: EMU (RJ*5 connector)

*  RS**2 network management interface: CONSOLE (RJ*5 connector)

*  RS**2 user channel interface: RS**2 (RJ*5 connector)

*  External synchronization interface / Extendable management interface :  ETS1/EXM1, ETS2/EXM2 (RJ*5 connector)

*  Engineering Order Wire (EOW) interface: PHONE (RJ*1 connector)

*  UALM and DALM output interface: U/DALMO (DB9 connector)

# Timing mode

* STM*1 line timing (T*1,T*2)

* Tributary timing from E**1 to E***3 (T2)

* External timing source (T*1/T*2), ***8Kbit/s by default and ***8KHz selectable

* External timing output (T*1/T*2), ***8Kbit/s by default and ***8KHz selectable

* ITU-T G.**3 internal oscillator

* The timing source can be auto-switched according to SSM or operator settings

# Supports 1*1 protection and Automatic Protect Switch (APS) with the switching time less than *0ms

# Supports Remote power Down Detection (RPD) and Auto Laser Shutdown (ALS)

# Supports embedded BERT and various loop back for troubleshooting

# Highly efficient management system

* Supports NE management based on CLI command via RS**2 interface or TELNET

* Supports Network management based on PC via unified platform: GTVIEW

* Supports three network management types: Traditional DCC management, Inner DCN management (by some VC*2 channel) and outer DCN management (by E1 cable via outer EXM interface).

# Power system

* Two backup power supply

* **0V AC or**8V DC single power

* **8V DC & **0V AC double power 

*  **8V DC & **8V DC double power 

* **0V AC & **0V AC double power 

* Power consumption less than *5W

Technical Parameter

  System Fabric

* Cross Connect: 4* 4 VC*4

 
   Optical Interface

* Optical Port: S1.1, L1.1, L1.2

* Connector: SC, FC

* Wavelength: ***0nm, ***0nm

* Coding: NRZ

* Max. Spectrum Width(RMS): G.**7

* Max. Tx Power: *8/ 0dBm

* Min. Tx Power: **3/ *5dBm

* Extinction: 8.2/ *0dB

* Rx Sensitivity: **8/ **4dBm, BER ****0

* Rx Overload: *8/ **0dBm, BER ****0
 

   E1 Interface

* Coding: HDB3

* Bit Rate: 2.**8Mb/s + *0ppm

* Connector: BNC (*5Ω) / RJ*5 (**0Ω)

* Standard:ITU-T G.**3,G.**4,G.**3

 
   ETS/EXM interface

* Line Clock: E1, STM*1 Optical Link

* Internal Clock: Internal Oscillator

* Bit rate:2.**8Mb/s±*0ppm

* Impedance: **0Ω balanced
 

   Ethernet management interface(EMU)

* Bit rate: **0Mb/s

* Connector: RJ*5    

 
   Operation Environment

* Working Temperature: **0C~ *0C

* Storage Temperature: **0C~ *5C

* Relative Humidity: 5%~ *5%, non-condensing

* No corrosive and solvent gas, no dust and heavy EMI

* Power Supply: AC **0V, DC **8V

* Power consumption: *5W±*0%

* Physical Dimension: **4mm×*4mm×**5mm (width ×height ×depth)