S
YSTEM
P
ARAMETERIZATION AND
O
PERATION
System 6844(RC) - V03.00
65 / 157
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]
Sync.-Mode
hopf
Master/Slave with PPS
Serial String (Interval = every second or minute)
The internal string is controlled once per second for:
Plausibility of the strings structure
Plausibility of the time information
All criteria of the string are met, the quality counter is raised;
at least one not met criteria leads to a count down of the counter.
Every minute protocols
do not use a quality counter
. Here the error bit
can be set every minute or cancelled depending on the result of the verifica-
tion.
PPS (Interval = every second)
The PPS is controlled once per second for:
The reception cycle is within 1000msec ±10msec
Max. deviation of the pulse width ±40msec
Pulse width max. 800msec
All criteria of the string are met, the quality counter is raised;
at least one not met criteria leads to a count down of the counter.
Sync.-Mode DCF77 Pulse (CET and worldwide)
DCF77 pulse (Interval = every minute)
The DCF77 time telegram is controlled once per second for:
Plausibility of the strings structure
Plausibility of the time information
Plausibility of pulse length
o
DCF77 pulse
low = 100msec.
20msec.
o
DCF77 pulse high = 200msec.
20msec.
Every minute protocols
do not use a quality counter
. Here the error bit
can be set every minute or cancelled depending on the result of the verifica-
tion.
Error bit 0 = 1
(no signal on the adjusted Sync.-Channel (input))
On the input of the adjusted Sync.-Source no signal nor activity is detected.
By default the error bit "Sync.-Channel" is
not
set after a System reset.
After system start the error bit is set or rather cancelled according to the activity on the
Sync.-Channel. This error bit is separately operated for each Sync.-Mode. All used
Sync.-Channels of the respective Sync.-Mode may cause the setting of a failure bit.
Based on no activity on a used Sync.-Channel, the error bit "Sync.-Channel" is set at
the end of the
Sync.-Channel - Time OUT
. Each detected activity on this Sync.-
Channel resets the Sync.-Channel - TimeOUT and thus the error bit.
Sync.-Mode
Sync.-Channel
Sync.-Channel - TimeOUT
GPS
Serial String
181 seconds
PPS
61 seconds
hopf
Master/Slave
Serial String
181 seconds
hopf
Master/Slave
with
PPS
Serial String
181 seconds
PPS
61 seconds
DCF77 pulse
(CET and worldwide)
DCF77 Pulse
25 seconds
