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“SBOM” 2 MB CLOCK DISTRIBUTOR with ELECTRONIC MEMORY

Clock distributor unit is an equipment that extracts network clock from any of the possible clock resources in the network and synchronises upto 4 OR 12 other systems. This unit provides both, 75 Ohms / 120 Ohms input & output termination facility in the same unit.

BRIEF TECHNICAL SPECIFICATIONS :

INTERFACE SPECIFICATION OF VARIOUS INPUT SIGNALS

............................................................................

 

   Model No. CDT-04 DL

SBOM 2 MB CLOCK DISTRIBUTER



 
(1) 2.048 Mb/S G.703 PCM Data Interface  
  • Terminating impedance    
: 120 Ohms.
  • Input attenuation tolerance
: 0 – 23 db
   
(2) 2.048 MHz G.703 Clock  
  • Signal Shape                     
  • Terminating impedance       
  • Input attenuation tolerance 
  • Priority Selection 
: Sinusoidal or bipolar square
: 75 Ohms / 120 Ohms
: 0 – 6 (0dBm for sinusoidal input)
: Automatic selection of Input clocks from   External & PCM Data.
   
(3) INTERFACE SPECIFICATION OF CLOCk DRIVER OUTPUTS  
  • Clock rate   
  • Test load impedance 
  • Normal peak voltage  
  • Pulse shape     
: 2.048 MHz (normal) +/- 50 PPM
: 75 Ohms / 120 Ohms
: 2.3 V / 3V
: Conforming to the masks G. 703

NOTE: Specification may be revised without prior information for Improvement.


2MB AUTO SWITCH OVER UNIT

TECHNICAL SPECIFICATION FOR 2MB AUTO SWITCH OV ER UNIT

 Model No. ASU-01
Steam Automatic Charge
  • Interface Specification for I/P
    signals 2 Mb PCM Data Interface.
 

a) Input Impedance

:120 Ohms. 

b) Input Attenuation Tolerance

: 0-23 db. 
   
  • Interface Specification for O/P
    signals 2 Mb PCM Data.
 
        a) Output Impedance           
        b) Nominal P-P O/P voltage
:120 Ohms.
: 3V (P-P) +/- 10 %.
   
  • Switch over time     
: =<50 milliseconds.
   
  • Indication & Controls.
 

a) Master Line OK

: Green LED.

b) Master Line Faulty

: Red LED.

c) Stand-by Line OK 

: Green LED.

d) Stand-by Line Faulty

: Red LED.
   
  • Input Power Supply
: 48 V DC (Exchange Battery).
   

Special Feature

: Auto restoration of MASTER LINE with   indication
   
 
 
 
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