Purpose of This Guide
12 X72 Desiger’s Reference and User’s Guide 097-10603-01 Rev. A – November 2004
Purpose of This Guide
The X72 Designer’s Reference and User’s Guide provides basic recommendations
for designing products to use Symmetricom’s X72 Rubidium Oscillator. The
guidelines in this user guide are generic because specific product requirements vary
from application to application.
This material consists of a brief description of X72 design supported by block
diagrams, description of environmental issues, installation guidelines, required
mating connectors, and unit operation.
Who Should Read This Guide
This document is intended for engineers and telecommunications professionals
who are designing, installing, operating or maintaining time, frequency, and
synchronization systems having a requirement for a low profile and highly precise
frequency generator.
To use this document effectively, you should have a good understanding of digital
telecommunications technologies and analog frequency generation and synthesis
techniques.
Structure of This Guide
This guide contains the following sections:
Chapter, Title Description
Chapter 1, Description This section contains a description of the X72 and lists its typical
applications. It provides information on dimensions,
performance, and connector pinouts.
Chapter 2, Design Integration
Considerations
This section contains mechanical issues pertaining to X72
mounting and mating recommendations, including thermal and
EMI considerations, external interfaces and grounding,
frequency control, susceptibility to noise, and reliability goal.
Chapter 3, Installation and
Operation
This section contains the information necessary to properly
install and operate the X72 unit including a simplified theory of
operation, and maintenance and warranty.
Appendix A, X72 J1 Connector
and Plug
This appendix identifies the Molex J1 connector and its mating
plug, and provides pinout information for the X72 edge board,
and 3.25 inch (8.255 cm) cable.
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