ADTRAN TSU LT, Руководство пользователя

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TSU LT User Manual Chapter 5 Config Menu
61203060L1-1A © 2003 ADTRAN, Inc. 41
Network Timing
The network is the source of timing. The received data clocking is looped back to the network where it is
used to determine the transmission timing. This option is also referred to as looped timed as the
transmission clock is derived from the received clock. See Figure 5-3.
Figure 5-3. Network Timed Clock Source
DTE Timing
The DTE is the source of timing. The TSU LT uses the incoming DTE clock to determine the transmission
timing. This is typically used in applications such as limited distance line drivers, where it is necessary to
have the DTE as the primary clock source (see Figure 5-4).
Figure 5-4. DTE Clock Source