Installing The Pcs-718 Into A Co Equipment Frame; Heat Baffles; Wiring Access; Alarm Leads - ADC PG-PLUS PCS-718 Technical Practice

Wiring Access

Installing the PCS-718 into a CO Equipment Frame

The Network Equipment Building Standard (NEBS) limits the maximum dissipation in a 12-inch deep individual
CO equipment frame, with open-faced mounting and natural convection cooling, to 946 W (Watts). Refer to each
individual line unit technical practice to determine the maximum number of units that can occupy any bay with
the 946 W limit.

Heat Baffles

One rack space minimum of 1
of the electronics. Heat dissipating equipment below this shelf must have a baffle installed allowing this unit cool
airflow. When multiple shelves are mounted in a frame, a heat baffle assembly, 130-1100-01, should be installed
on each shelf.
W A
IRING CCESS
All wiring to the COT shelf is done on the backplane. To access the backplane, remove the clear Plexiglas™ cover.
A L
LARM EADS
Audible and visual alarm leads from the CO alarm panel to the COT shelf must be provided. Run the Alarm leads
down the side of the COT shelf mounting frame.
HDSL L
INES
Depending on the type of COLU being installed, one or two pair from the COT shelf to the HDSL Tip and Ring
pair(s) at the distribution frame must be provided for each system in the COT shelf. These leads should be dressed
along the side of the frame per local practices.
S L
UBSCRIBER INES
Three 50-pin Telco-ended (female) cables per system are required for connecting the COT shelf to the CO switch
subscriber line circuits at the distribution frame. Dress the cables along the sides of the frame per local practices.
26
3
/ inch should be left open below each shelf for proper natural convection cooling
4
January 6, 2003
SCP-PCS718-010-06H
PCS-718 List 1