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Symmetricom TimeProvider 1000 User Manual

Symmetricom TimeProvider 1000
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097-58001-02 Revision C – August 2005 TimeProvider User’s Guide 35
Chapter 1 Overview of the TimeProvider
Reference Input Signals
Subtending Mode
Table 1-3 illustrates which input is the active system reference under several
different input conditions when the TimeProvider is in the Subtending mode.
GPS Inputs
Symmetricom provides a complete GPS antenna system for the TimeProvider. This
includes the Symmetricom GPS Antenna, the TimeProvider Interface Unit (TPIU),
and associated cables. Figure 1-7 illustrates the TPIU. See Making GPS
Connections, on page 64 for more information on installing the GPS Antenna and
the TPIU.
Figure 1-7. The TimeProvider Interface Unit (TPIU)
Table 1-3. Subtending-Based Reference Selection Scenarios
Sequence
QLevel on
INP1
QLevel on
INP2
Active Reference
Non-Revertive
1
Note:
1
Non-revertive example. Priority Levels set to: INP1 = 3, and INP2 = 3
Revertive
2
2
Revertive example. Priority Levels set to: INP1 = 1, and INP2 = 2
111INP1 INP1
221INP2 INP2
322INP2 INP1
421INP2 INP2
511INP2 INP1
6 1 LOS INP1 INP1
7 LOS LOS Holdover Holdover
8LOS1INP2 INP2
911INP2 INP1

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Symmetricom TimeProvider 1000 Specifications

General IconGeneral
BrandSymmetricom
ModelTimeProvider 1000
CategoryClock
LanguageEnglish

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