
Chapter 5 Config Menu TSU LT 220V User Manual
38 © 2004 ADTRAN, Inc. 61203060L2-1A
Internal Timing
The TSU LT 220V is the source of timing. The TSU LT 220V is configured to use its own internal
oscillator as the source of timing. Applications include private line driver circuits where one end is set to
network and the other to internal. See Figure 5-5.
Figure 5-5. Internal Clock Source
UNIT MENU
Use the UNIT submenus to change control port and alarm options. Figure 5-6 shows a sample LCD window.
Figure 5-6. Configuration Submenu
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