Chapter 5. Configuration Menu

Internal Timing

The TSU 120 is the source of timing. The TSU 120 is configured to use its own internal oscillator as the source of timing. Appli- cations include private line driver circuits where one end is set to network and the other to internal. See Figure 5-5.

T1 XMIT

( D S 1 )

T1 Receive

 

 

OSC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Network

 

 

 

 

 

 

 

 

 

 

 

 

Interface

 

 

 

 

( O P T I O N )

 

 

Nx56/64

 

DSX-1

 

 

 

 

DTE CLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTEPBX

Figure 5-5. Internal Clock Source

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TSU 120 User Manual

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ADTRAN TSU 120e user manual Internal Timing, Internal Clock Source