Alcatel-Lucent 1665 Installation Manual page 264

Operational tests
•
•
Important!
timing reference. Verify:
– Cabling between the timing source and the 1665 DMX shelf
– Correct line coding
– Correct frame format.
........................................................................................................................................................................................................................
At the rear of the shelf (see
9
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)
............................................................................................................................................................................................................................................................
5 - 1 4
Both references are in service (IS)
Which of the two references is active.
If a reference does not indicate IS, that input is not receiving a proper
Figure 5-1, "1665 DMX Shelf Backplane" (p.
P15
48VB
48RTNB
J7 J5
D OUT C OUT
J8 J6
D IN C IN
J14 J11 J15
SYNC2 MISC FAN
J17
CIT
J16
IAOLAN
J19
INTEROP
J18
DLAN
J10 J12
X.25 ALM
External timing verification
TIMING CONNECTORS
SYNC2 (J14)
SYNC21 (J9)
J9
SYNC1 P14
48VA
48RTNA
J4 J2
B OUT A OUT
J3 J1
B IN A IN
J13
ALM
MULT
Issue 1, November 2007
5-14),
365-372-304R7.1