User Manual

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

Page 3-4

3 WDM MOUNTING PROCEDURE (OPTIONAL ACCESSORY)

A bi-directional wavelength division multiplexer (WDM) system is available as an accessory

item for the Digivance system. If the application does not require the use of a WDM system,

skip this section and proceed to Section 4.

At the HU, the WDM system consists of a WDM host module and a WDM host module

mounting shelf. Each host module can support two HU’s and each host module mounting shelf

can hold two host modules. A fully loaded host module mounting shelf can therefore support

four HU’s.

When multiple HU’s require connection to a WDM system, the host module mounting shelf and

the HU’s should be mounted in the equipment rack as shown in Figure 3-2. This configuration

allows the pigtail leads from the two host modules to be connected directly to the optical ports

on any one of the four HU’s.

Figure 3-2. Typical WDM and HU Configuration

The WDM host module mounting shelf may be mounted in either a 19-inch or 23-inch EIA or

WECO equipment rack. Four #12-24 screws are provided for securing the mounting shelf to the

rack. Use the following procedure to install the host module mounting shelf in the equipment

rack and to mount the host modules in the host module mounting shelf:

1. The host module mounting shelf is shipped with the mounting brackets installed for 19-

inch EIA rack installations. If installing the mounting shelf in a 19-inch EIA rack, proceed

to step 5. If installing the mounting shelf in a 19-inch WECO rack, a 23-inch EIA rack, or

a 23-inch WECO rack, proceed to step 2.

WDM MOUNTING

SHELF

(WITHOUT MODULES)

18652-A

POWERWORX

FUSE PANEL

HOST UNITS