363-206-204
Release 7 Installation Tests
Issue 9 October 1998 6-9
equipment. The shelf must successfully pass this test before testing any other
feature of the DDM-2000 OC-3.
On initial installation/turn-up of a Release 7 system there are no default cross-
connects, thus all cross-connects need to be entered for the Release 7 tests. In
Release 7 VT and STS-1 cross-connects are allowed and can be entered as a
group, rather than individually.
Upon completion of this test all cross-connections will be deleted and later
reentered to fit individual rings applications.
To understand cross-connects and the rings philosophy, refer to the ‘Description
Section’ under ‘Establishing Cross-Connects and System Test’ of this manual.
NOTE
:
If the shelf is not fully equipped, move circuit packs around and repeat the
test. Test all circuit pack positions which have DSX cabling.
NOTE
:
After completing this test, isolate and correct any incorrect wiring or isolate
and replace any failed units. If any cabling is corrected or units replaced,
repeat the Local Equipment and Cross-Connect tests until the tests pass
without failures.
NOTE
:
Refer to 363-206-202,
DDM-2000 OC-3 Multiplexer User/Service Manual
,
for complete command descriptions.
NOTE
:
Unterminated optical connectors may emit laser radiation. Do not view
beam with optical instruments.
Preparation Procedure
1. The ’Free Running’ timing configuration is required for the DSX-1 test. The
timing parameters are set on the TGS pack. Refer to Section 4 of this man-
ual for option switch settings. Set timing to ‘Free Running’.
2. Fully insert the OLIUs into the shelf.
3. Connect the OLIU OUT to the OLIU IN of each OLIU (loopback), using opti-
cal fiber jumper cables. Refer to Figure 6-1.
NOTE
:
The optical fiber cables required are listed under "Tools, Test Sets, and
Accessories".
NOTE
:
When looping a 22G-U OLIU back on itself a 10 dB LBO is required.
Содержание DDM-2000 OC-3
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