Alcatel-Lucent Data Multiplexer Explore 1665, Installation Manual, Page: 264 / 408

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External timing verification Operational tests
5 - 1 4
365-372-304R7.1
Issue 1, November 2007
•
Both references are in service (IS)
•
Which of the two references is active.
Important!
If a reference does not indicate IS , that input is not receiving a proper
timing reference. Verify:
– Cabling between the timing source and the 1665 DMX shelf
– Correct line coding
– Correct frame format.
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9
At the rear of the shelf (see Figure 5-1, “1665 DMX Shelf Backplane” (p. 5-14) ,
disconnect the input timing cable from the connector associated with the active reference.
Requirement: The MN LED lights on the SYSCTL and the FAULT LED flashes on
the MAIN OLIU circuit pack associated with that reference (SYNC1 is associated
with M1 and SYNC2 is associated with M2).
Figure 5-1 1665 DMX Shelf Backplane
MISCELLANEOUS DISCRETE
CONNECTOR (J11) TIMING CONNECTORS
SYNC2 (J14)
SYNC21 (J9)
-48RTNA
-48VA
P14
J9
SYNC1
J15
FAN
J11
MISC
J14
SYNC2 P15
J17
CIT
-48RTNB
-48VB
J16
IAOLAN
J19
INTEROP
J10
X.25
J18
DLAN
J12
ALM
J13
ALM
MULT
J4
B OU T
J2
A OU T
J3
B IN
J1
A IN
J8
D IN
J7
D OU T
J6
C IN
J5
C OU T