User Manual

ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation

Page 3-6

Figure 3-4. WDM Host Module Mounting Shelf and WDM Host Module Installation

4 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 safety support the combined

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

for the HU is 50º C (122º 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.

Use the following procedure to install the HU in the equipment rack:

1. The HU is shipped with the mounting brackets installed for 19-inch rack installations. If

mounting the HU in a 19-inch rack, proceed to step 4. If mounting the HU in a 23-inch

rack, proceed to step 2.

2. Remove both mounting brackets from the HU (requires TORX screwdriver with T20 bit)

and save screws for reuse.

Warning: Wet conditions increase the potential for receiving an electrical shock when

installing or using electrically powered equipment. To prevent electrical shock, never install or

use electrical equipment in a wet location or during a lightning storm.

Note: To insure that all optical connectors remain dust-free during installation, leave all dust

caps and dust protectors in place until directed to remove them for connection.

16888-A

WDM MODULE

WDM MOUNTING

SHELF