Chapter 4. Configuration and Operation
120
DS - Displaying Clock Source
Enter DS to Display the clock Source, as depicted in Figure 4-19. Different alarms trigger various clock
sources. Clock source is set with the Set clock Source (SS) command.
The example in Figure 4-19 shows the clock sources for drop-and-insert mode. The asterisk shows the
present mode of operation, with a local alarm on T1-1.
The clock sources are listed under the T1-1 and T1-2 Clock columns. The primary clock source, when
the system is operating normally, is shown in the No Alarm row.
This screen will change depending upon mode of operation and timing source. It will also change if the
user chooses an internal clock other than the default shown on the SS screen.
] DS
10:29:21------------- [ Transmit Clock Sources ]------------ 03/08/95
Drop/Insert Loop Timing
Alarm Condition T1-1 Clock T1-2 Clock
---------------------------------------------------------------
No Alarm Rcvd T1-2 Rcvd T1-1
LOC T1-2 Internal Rcvd T1-1
LOC T1-1 Rcvd T1-2 Rcvd T1-2
LOC T1-1/-2 * Internal Internal
* Current Alarm Condition
---------------------------------------------------------------
Figure 4-19. Displaying Transmit Clock Sources
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