This object indicates the manual switching flag.
The 'true' value indicates the currently selected clock source
is a result of the manual switching. The switch allows
a user to select a synchronization source assuming it is
enabled, not locked out, not in signal fail condition,
and has a QL better than DNU in QL-enabled mode.
A clock source is enabled when it occupies a row in
cnsInputSourceTable. A clock source is not locked out
when cnsInpSrcLockout contains the value 'false'.
A clock source is not in signal failure condition when
cnsInpSrcSignalFailure contains the value 'false'.
The QL is identified in cnsInpSrcQualityLevel.
In QL-enabled mode, a manual switch can be performed only to
a source which has the highest available QL.