Symmetricom X72 User Manual

097-10603-01 Rev. A – November 2004 X72 Desiger’s Reference and User’s Guide 89
X72 1PPS Algorithm Theory of Operation
Initialization
Figure D-6 X72 Initialize State
During initialization the algorithm sets up
variables based on the time constant (TC)
and damping factor (DF).
The X72 checks for 1PPS input once per
second, and if present, it enters the holdover
state.
Automatic mode is used when the time
constant is set to 0.
The X72 1PPS is in the initialization state
when there is no 1PPS applied.
The “j” command shows the 1PPS count.

Symmetricom X72 Specifications

General

Brand	Symmetricom
Model	X72
Category	Test Equipment
Language	English