
Utah-400 Components
4-44
Utah-400 Components
LED Indication
Scan Gate
This corresponds to the internal communication bus. This indicator will flash when an internal
communication element is being received.
Loop Lock
Related to the phase lock loop clock system that is implemented on this board. This indicator
will appear when the module synchronizes to the reference that is presented.
Ref OK
When lit, this indicates that a suitable reference is applied to the chassis, and the module has
synchronized correctly. This then sends a signal to the input cards indicating synchronization,
and that they should accept the reference that is being fed to them as the master clock.
Note: There is a fall back mode in the router if the reference is lost. The system
reverts from synchronous operation to asynchronous operation. The
router must remain active and continues to pass signals.
Summary of Contents for Utah-400
Page 1: ...The Utah 400 Digital Routing Switcher 144x144 Systems System Setup and Operation ...
Page 14: ...TOC 6 The Utah 400 ...
Page 18: ...F 4 List of Figures ...
Page 31: ...144x144 Router 1 13 System Configurations FIGURE 1 4 144x144 with Redundant Crosspoints ...
Page 32: ...Introduction 1 14 Introduction ...
Page 66: ...Configuration and Operation 3 10 Configuration and Operation ...
Page 94: ...Utah 400 Components 4 28 Utah 400 Components ...
Page 124: ...Troubleshooting 5 10 Troubleshooting ...