12778474-002-2 Revision F – March 2004
TSG-3800 User’s Guide
31
Overview of the TSG-3800 Series
Features Common to All Models
Modules
Symmetricom provides a number of input, clock, frame generator, and output
modules that can be used with any shelf in the TSG-3800 series. These modules
are interchangeable among the shelf configurations with the following exceptions.
EMI-compliant modules must be installed in TSG-3800E, and can be used in all
other members of the TSG-3800 series.
All other modules can be installed in the TSG-3800, but cannot be used in the
TSG-3800E without affecting its EMI compliance.
Modules are plug-in assemblies that fasten into the main shelf and are secured with
captive thumbscrews. Electrical connections between the modules and the
backplane of the main shelves are accomplished through the use of gold-plated
edge connectors that are hard-wired to corresponding connectors on the backplane.
Each module contains status indicators and may also contain external connectors.
The main shelf contains a set of modules that are required for operation and a
combination of other modules. Requirements for optional modules depend on the
type of input and output signals and the quality of clock oscillator required by the
user and required for the application.
The TSG-3800 shelf supports five types of modules: Input, CPU, Clock, Frame
Generator, and Output. Modules, other than the CPU, are normally installed in pairs
for functional redundancy.
Figure 1-1
shows the locations in the main shelf for each
type of module. Refer to Chapters 5 through 7 in this guide for the descriptions of
available module types.
Figure 1-1.
Location of Module Slots in the Main Shelf
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