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Presuming the good position of the GPS antenna the synchronisation takes
place in approx. 6 to 8 minutes.
•
Reception of the GPS data is indicated by blinking GPS LED on the PCB.
10.4 Slave clock controlled by synchronizing impulses
On digital clock connected in time distribution system controlled by synchronizing
impulses choose the item
P4
in the main menu and set it according type impulse
lines (one minute, half minute, second pulses) and in item
P5
choose mode of
processing impulse line (polarized / unpolarized impulses, synchronization and
time setting / synchronization only). Set the value
A
in items
P3
and
P7
.
10.4.1 Synchronization and time setting – P5 mode 1 and 3
Clocks are set according to the slave line time on the Master clock.
•
Stop the slave line on Master clock.
•
Set all slave clocks on the same time. Set the current date on the digital
clock. The clocks stand still and the colon flashes in 2 second interval.
•
Set the time of the slave line to the same time as on slave clocks.
•
Run the slave line on Master clock.
•
After receiving each impulse is displayed time increased by one minute
(or by 30 seconds or 1 second respectively)
•
After the expiration of run-out time the slave clocks are synchronized by the
time information generated by the master clock, the colon flashes constantly.
•
In case of the line fault the clock displays the right time information based on
its own quartz time base. When the normal operation of the line resumes, the
slave clock adjusts itself to the time equal to the master clock.
10.4.2 Synchronization only – P5 mode 2 and 4
The clock time-base is synchronized by incoming pulses in normal operation of
the slave line.
•
Set current date and time on the slave clocks according the master clock
time with accuracy of ±30 seconds (or ±15 seconds, or ±0,5 second
respectively).
•
The colon flashes in 2 second interval.
•
After 2-3 minutes are the clocks synchronized with the master clock. The
colon is permanently lit during the time display.
•
In case of the line fault the clock displays the right time information based on
its own quartz time base. When the normal operation of the line resumes, the
clock synchronizes with the incoming pulses.
