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Appendix D One Pulse Per Second Source Connection
This appendix describes how to connect a one pulse per second (1PPS ) source,
such as a commercial GPS receiver, to an X72 to achieve long term accuracy and
excellent holdover, or flywheeling performance.
In This Appendix
Connection Requirements
Background
X72 1PPS Functions
System Requirements
X72 1PPS Algorithm Operation
Setting the X72 for 1PPS Synchronization
1PPS Firmware Versions
Flywheeling Recovery – Normal
Recovery with JamSynch
X72 1PPS Algorithm Theory of Operation