Nortel Passport 15000 Preparation Manual page 39

Table 3 (continued)
Diameters of processor card cables
Type of cable
fiber, simplex multimode or single-mode
with LC connectors
fiber, simplex multimode or single-mode
with MT-RJ connectors
fiber, duplex multimode or single-mode
with SC connectors
fiber, duplex multimode or single-mode
with LC connectors
coax, standard size
mini-coax 8w8, single cable
mini-coax 8w8, cluster of 8 cables
(Sheet 2 of 2)
To calculate the area of the cables, multiply the total number of cables by the
value of the cross-sectional area for that cable type. Calculate the area for
each type of cable on your shelf. If the sum of the areas is less that 1400 mm
than you have a low-density cabling. If the sum is greater than 1400 mm
not greater than 2800 mm
For example, the area of cables for five 16-port OC-3/STM-1 FPs (NTHW21
with MT-RJ connectors) which have a cross-sectional area of 9.0 mm
calculated as follows:
<total number of FPs> * <number of cables> * <cross-
sectional area> = total area of cable bundle
5 * 16 * 9.0 mm
The total area, for this example, is 720.0 mm
2
1400 mm , this configuration is a low-density cabling situation.
Depending on the number and type of processor cards (CPs and FPs) that are
provided with a Passport 15000 or 20000 or to be added later, the basic cable
management brackets may need to be doubled or replaced to accommodate a
Passport 15000, 20000 Site Requirements and Preparation Guide
Chapter 2 Planning considerations 39
Diameter per cable
2.0 mm
2.9 mm
5.8 mm
4.0 mm
__.__ mm
3.0 mm
10.5 mm
2
, you have a high-density cabling.
2 2
= 720.0 mm
Cross-sectional area
2
4.0 mm
2
9.0 mm
2
18.0 mm
2
8.0 mm
2
__.__ mm
2
9.0 mm
2
113.0 mm
2
. Since the total area is less that
2
2
, but
2
can be
5.2S2