M
ULTI
-S
OURCE
S
YSTEM BASED ON
S
YSTEM
7001RC
22 / 31
Multi-Source Function System 7001RC - V02.01
hopf
Elektronik GmbH
Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
2.6 Special Features
in the System Behaviour
The following points should be observed when operating the multi-source system:
2.6.1 System Behaviour on Sync. Source Changeover
When switching between primary and secondary sources the system status is
always
switched to quartz "
C
".
There then follows a re-synchronisation with the new sync. source. The system status
changes from "
C
" -> "
r
" -> "
R
” with a continuous increase in accuracy.
On a channel change within a multi-source:
•
no reset is triggered in the system
•
the system runs with system reception status "quartz"
•
the new active sync. source synchronises the clock system and controls the
internal quartz base
Multi-source modes with channels 1 / 3
•
Channel 1 Channel 3
or
Channel
3
Channel 1
Multi-source modes with channels 2 / 3
•
Channel 2 Channel 3
or
Channel 3 Channel 2
The following effects may arise on a source changeover in the event of a
time offset
between the two sources (depending on the offset of the two
sources):
•
System time leap
and/or
•
System pulse leap
(the internally controlled second mark "PPS" can leap by up to 500msec in
this case)
2.6.2 Behaviour on ST/WT Changeover
At the time of a change from winter time to summer time or vice-versa, an announcement bit
is normally set one hour before the ST/WT changeover. This bit is reset when the
changeover has taken place.
After a ST/WT changeover has taken place no further changeover can be
carried out for 61 minutes. This blocking period is maintained even after a
system reset or after switching off and on again.
