3Com DUA3700-0BAA04 manual Preparation, for installation, Unit and Rack

Distribution Rack Installation 3-5

Unit and Rack	To prepare the CoreBuilder 7000 family ATM switch and distribution rack
Preparation	for installation:

1Attach the mounting brackets onto the sides of the CoreBuilder 7000 family ATM switch using the mounting bracket screws (M4 x 8 Phillips).

2Determine whether or not the distribution rack has threaded holes. If the holes are threaded, “Mounting the CoreBuilder 7000 Family ATM Switch” on page 3-6.

3If the holes are not threaded, you must insert “G” clips. To determine where to insert “G” clips, locate the top of a universal mounting hole pattern on the left mounting rail. In the universal rail pattern, the spacing between holes is 1/2 inch, 5/8 inch, 5/8 inch, and 1/2 inch. To find the top of the pattern, locate the midpoint between any two holes that are spaced half an inch apart. Figure 3-1 shows the universal mounting hole pattern.

Universal mounting hole pattern

Top of a universal mounting hole pattern

1/2-inch spacing

5/8-inch spacing

5/8-inch spacing

1/2-inch spacing

Figure 3-1Universal Mounting Hole Pattern

4From the top of the universal mounting hole pattern, insert “G” clips in the holes designated for the unit model.

5Repeat steps 3 and 4 for the right rail. Ensure that you start on the same hole space.

You are now ready to mount the CoreBuilder 7000 family ATM switch into the distribution rack.