User's Manual

ADCP-75-348 • Issue 1 • 04/2008

Page 13

1. The WDM host module mounting shelf is shipped with the mounting brackets installed for

23-inch rack installations. If installing the mounting shelf in a 23-inch rack, proceed to

Step 4. If installing the mounting shelf in a 19-inch rack proceed to Step 2.

2. Remove both mounting brackets from the mounting shelf (requires Phillips screwdriver)

and save screws for reuse.

3. Reinstall both mounting brackets so the short side of the bracket is flush with the front

panel as shown in as shown in

Figure 9. Use the screws removed in Step 2 to attach the

new brackets to the mounting shelf.

Figure 9. Installing the Replacement Mounting Brackets

4. Position the mounting shelf in the designated mounting space in the rack (per system

design plan) and then secure the mounting brackets to the rack using the four #12-24

machine screws provided.

5. Install each WDM host module in the mounting shelf. A rail on the side of the module fits

into a guide within the mounting.

6. Secure each host module to the mounting shelf by twisting the handle on each quarter-turn

fastener 90º.

7. Carefully store the pigtail leads from each host module. The routing and connection

procedures for the pigtails are provided in

Section 6.8.

6.5 HU Mounting Procedure

The HU may be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. Both

US standard and metric machine screws are included for rack mounting the HU. When loading

the HU in a rack, make sure the mechanical loading of the rack is even to avoid a hazardous

condition such as a severely unbalanced rack. The rack should safely support the combined

weight of all the equipment it holds. In addition, maximum recommended ambient temperature

for the HU is 55º C (131º F). Allow sufficient air circulation or space between units when the

HU is installed in a multi-rack assembly because the operating ambient temperature of the rack

environment might be greater than room ambient.

22393-A