Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 607 / 874

Chapter 17 Hardware procedures 607
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
5 At the side of the fiber unit that is nearest the FP, route the cable through
the opening and around the half-spools as shown in the figure “A dual-
drawer fiber management unit NTHW50” (page 608).
6 Pull up the slack on the cable outside the fiber unit.
7 Inside the drawer, locate the tray to contain the fiber cable. To access a
tray in a stack, flip up the ones above it from the center of the drawer
towards the nearest side.
8 At the tray, route the cable through the slot in the rear corner, then under
the tabs and around the center, and finally out the same corner of the tray.
For a view of a fiber on a tray, refer to the figure “A dual-drawer fiber
management unit NTHW50” (page 608). Notice the position of the
crossover point of the cable. Ensure that the electrical tape on the cable
is not ravelled onto the tray.
9 From the tray corner, route the cable along the same path as it entered
the fiber unit. Adjust the slack on the tray and outside the fiber unit so that
the electrical tape resides at the opening outside the unit.
10 Lower the tray or trays. Ensure that no cable is pinched between trays.
11 On the tray label, record the connection information of the FP (node
identifier, FP slot number, port number, signal direction). Decide whether
this is To or From information. Be consistent with all cables.
12 Slowly close the drawer to test the slackness of the cable cluster.
13 Route the cable to the other end connection. Use tie-wraps to very loosely
fasten the cable at bends in the path. Leave the tie-wrap open enough to
easily accommodate more fiber cable connectors.
If the entire cable path and the tray cannot accommodate all of the cable
slack, you must use a shorter cable.
14 Connect the cable. Record the connection information.
15 On the tray label, record the connection information of the other end (node
identifier, type of node, port number, signal direction).
16 Carefully remove the temporary electrical tape from the cable. Avoid
cutting or nicking the cable sheath. Avoid crimping or pinching the cable
during its removal.
17 Repeat for each fiber cable that must pass through the fiber unit drawer.
18 Bundle the fiber cable slack outside the drawer using the provided curlie
ties. There are 4 curlie ties per drawer.