User Manual

ADCP-75-150 • Preliminary Issue A • March 2003 • Section 2: Description
Page 2-23
© 2003, ADC Telecommunications, Inc.
8 WAVELENGTH DIVISION MULTIPLEXER (ACCESSORY)
The Wavelength Division Multiplexer (WDM) module, shown in Figure 2-13, is an accessory
item that is used in applications when it is desireable or necessary to combine the forward and
reverse path optical signals from one Digivance system onto a single optical fiber. Each WDM
consists of a bi-directional wavelength division multiplexer mounted within a power-paint
coated sheetmetal enclosure. A single SC-type optical connector port is provided for connecting
the forward/reverse path optical fiber to the WDM module. A pair of pigtail leads with SC-type
connectors are provided for connecting the WDM module to the forward and reverse path
optical ports on the HU or STM.
Figure 2-13. Wavelength Division Multiplexer Module
In WDM applications, a WDM module must be installed at both the HU and the RU locations.
A mounting shelf, shown in Figure 2-14, is available for mounting WDM modules in the same
equipment rack as the HU. Each WDM module mounting shelf can support two WDM
modules. Both the RU outdoor cabinet and indoor mounting shelf provide a mounting slot for
installing a WDM module.
Figure 2-14. WDM Module Mounting Shelf
17013-A
18646-A