Detailed Description continued
The automatic reference selection is shown in the following state diagram:
Automatic Reference Selection
Figure 6
Stay
Locked on Ref m
time for t=
Ref_Rev_Delay
Ref_Rev_Delay
time expired
Ref n returns,
Ref m marked
“revertive”
Ref n returns,
Ref m marked
“non-revertive”
Locked
on Ref n
Loss of Ref n
Select new reference:
Next highest priority,
Qualified (within max. pull-in range, signal present > 10 sec.),
Non-masked
Select &
Lock on
Ref m
The operational mode is according to the following state diagram:
No available reference and no Hold Over history
Ref loss w/no good Hold Over history and no other available reference
Automatic Operational Mode Selection
Figure 7
Reference Available
(Select highest priority)
Higher priority Ref return with
prior reference marked
“revertive”
Locked
Ref loss w/no good hold
over history and no other
available reference
Ref
Return
Free Run
Ref
Return
Hold Over
Ref Loss w/good hold over history
and no alternate reference available
Ref Loss w/alternate
reference available
No available
reference and
no hold over
history
Data Sheet #:
TM052
Page 10
of
36
Rev:
03
Date:
11/07/08
© Copyright 2008 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
CONNOR-WINFIELD [ CONNOR-WINFIELD CORPORATION ]
