M
ULTI
-S
OURCE
S
YSTEM BASED ON
S
YSTEM
7001RC
Multi-Source Function System 7001RC - V02.01
25 / 31
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: info@hopf.com
2.8.2 Synchronisation via DCF77 Pulse (Channel 2)
The
local time
, including summertime/wintertime information and announcement bits for
summertime/wintertime changeover, are transferred to the 7001RC system via the DCF77
pulse. The 7001RC system calculates the correct UTC time from the local time based on this
and on the internally set time difference.
Synchronisation via DCF77 pulse:
•
The received time is local time
•
The system UTC time is a calculated time
The DCF77 pulse transmitted by the sync. source must be correctly read by the multi-source
system at least three times and recognised as plausible before the sync. source status
changes from "
-
" to "
R
". As soon as the sync. source status reaches "
R
" synchronisation of
the system begins. The system status synchronises from quartz operation "
C
" via radio
synchronous "
r
" to radio synchronous with quartz control "
R
".
In the event of DCF77 pulse failure the system status changes from "
R
" "
r
" "
C
", after
expiry of the delay time set in the 7001RC system for the reset of the radio bit.
2.8.3 Synchronisation via Master/Slave-String (Channel 3)
The Master/Slave-String transmitted by the sync. source must be correctly read by the multi-
source system at least twice and recognised as plausible before the sync. source status
changes from "
-
" to "
R
". As soon as the sync. source status reaches "
R
" synchronisation of
the system begins. The system status synchronises from quartz operation "
C
" via radio
synchronous "
r
" to radio synchronous with quartz control "
R
".
In the event of Master/Slave-String failure the system status changes from "
R
" "
r
" "
C
",
after expiry of the delay time set in the 7001RC system for the reset of the radio bit.