Verilink DCSU 2911 (880-502647-001) Product Manual - Manual (Page 55)

DCSU 2911 E1 Craft Interface
Verilink DCSU 2911 User Manual 4-9
Alternate Timing
Options
Submenu
If the option, “Receive clock from shelf” has been selected by using
the R command from the Configuration Menu (Timing Options)
submenu, an additional set of parameters will be displayed. (
Figure
4-5 )
Figure 4-5 DCSU 2911 Configuration Menu (Timing Options)
The following additional timing parameters can be chosen when
the “Receive clock from shelf” option has been chosen (the other
available options are discussed in the previous table):
Table 4-6 Timing Parameters
Diagnostics Menu
Display the Diagnostics Menu by typing the command D from the
Main Menu. (Figure 3-1.)
TA Tertiary Auto Restore: Choose Yes to resynchronize to the clock
preference automatically if that clock in the node fails. Otherwise, choose
No to synchronize to other sources (primary, secondary) or stay down.
Specifying a tertiary source for clocking is useful if a power failure results
in the failure of the primary and secondary sources for automatic restore.
Restoring from a tertiary source may take up to 90 seconds.
Yes or No
(Y/N)
R Receive Clock from Shelf: Choose whether the DCSU will receive its timing
signal from another module in the shelf, or from an on-board timing
source. See Figure 4-5, Figure 4-5.
Yes or No
(Y/N)
X Exit the Timing Options screen.
Command Description Options
-- DUAL CSU 2911 CONFIGURATION MENU (TIMING OPTIONS)--
Current shelf timing source: Card 1, INTERNAL (PRIMARY)
Source Slot Number Synchronization Auto Restore
PRIMARY PC) 1 PS) INTERNAL PA) NO
SECONDARY SC) 1 SS) INTERNAL SA) NO
TERTIARY TC) 1 TS) INTERNAL TA) NO
R) Receive clock from shelf: YES
X) exit this screen
[1,1] DUAL CSU 2911 >
Command Description Options
PC Slot number of the module to use as a primary timing source. MLS: 1—13
QLS: 1—5
DLS: 1—2
SC Slot number of the module to use as a secondary timing source. MLS: 1—13
QLS: 1—5
DLS: 1—2
TC Slot number of the module to use as a tertiary timing source. MLS: 1—13
QLS: 1—5
DLS: 1—2