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097-58001-02 Revision G – April 2008 TimeProvider User’s Guide 31
Chapter 1 Overview of the TimeProvider
Functional Description
Figure 1-7. Block Diagram of the TimeProvider
Shelf
Both the front-access and rear-access shelf provides a chassis for mounting the
Input module, one IMC or one IMC/TPIU, two IOCs, and up to four Output modules.
A backplane provides connections between the modules.
Input Module
The Input module receives the incoming reference signals and contains the alarm
input/output connector. A variety of connector modules allows you to select the
connector style and input impedance to match the wiring system at the installation
site.
Information Management Card (IMC)
The Information Management Card, known as the IMC, contains a processor that
manages communications between the two IOCs and the serial and Ethernet
communications ports. It also provides communication to the GPS receiver in the
antenna; if the IMC fails or is removed, GPS operations cease.