SELENA Multifunctional LED Clock USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013 www.ledclocks.com
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This configuration may be used either when the individual zone clocks are installed in separate enclosures or when a
group of zone clocks is installed in a common enclosure.
One of the zone clocks ( in the group ), that has the required options installed, may be designated as the Master.
Alternately, an external Master or a PC with installed Master-Slave driver software may be used.
All other zone slaves must have a serial sync signal inputs installed and have the slave function ( mostly Fn34 )
enabled.
The sync signal may be transmitted by the master at any time and at any intervals. The slave zones time offsets can be
set to differ even by as little as 1 minute from the master time.
Once in the Programming Mode, the multi-zone ( Fn 50 ) function and the Zone Slave function ( Fn 34 ) should be
enabled and the ZONE OFFSET should be initially programmed manually in all zone slaves.
TO SET THE ZONES OFFSETS
1. Use the switch on the side of the enclosure to select the zone ( if multi-zone system in a common enclosure ).
2. Initiate the functions programming mode ( see the manual ).
3. Make sure that the zone is set as SLAVE ( Fn34 enabled and , if required, set the appropriate combination of
functions Fn53,54 and 55 ).
4. Make sure that the zone has Fn50 enabled.
5. Enable Fn38, Fn39 and Fn51 ( offset preset enable ) and wait till the display returns to showing the clock time.
6. Press the "SET" key on the remote and using the UP and DN keys, preset the "time offset hours and minutes" for
the zone. Use the "NXT" key to move the cursor.
NOTE, that setting the hours to less than 24 makes the zone offset negative and to over 24 hours sets a positive offset.
The minutes are set as an absolute offset.
For instance: if the hours:minutes are set to 21:30 then the zone offset = [ Master - (2hrs:30min) ].
Setting the hours:minutes to 27:30 makes the zone offset = [ Master + (3hrs:30min) ].
7. Press the “SCAN” key to return the display to the clock mode.
8. Initiate the functions programming mode again and Disable Fn51 ( zone offset programming enable ).
IMPORTANT: The TYPE “A” Zone Offset programming affects the current Stopwatch/Timer/Counter memory.
Therefore, if timers or counters are also being used, renew the programmed timer starting time or the
counter count after finishing the zone offset programming.
Type “B” STANDARD SYNCHRONIZED NETWORK with x5th MINUTE-UNITS and SECONDS SYNC
FUNCTION ENABLED ( Fn 90, 91 ) .
This configuration can be used with any of the wired or wireless options series # 725 or 724RS installed.
This configuration requires that the slaves have the serial communication functions enabled, in most
cases the function Fn34. The sync RANGE REPEATER functions Fn53, 54 and 55 may also be used.
When a number of clocks is synchronized using the SELENA Time Sync protocol, or in some instances also other
protocols, it is possible to set the slave clocks to synchronize either “only to the Second” ( enable the function Fn
90 ), or to the “x5th Minute-Units and the Seconds” ( enable the function Fn 91 ), rather than the entire time data.
In this configuration, some or all slave clocks should be initially set manually to different time and date, for instance
different Zones.
1. Use the switch on the side of the enclosure to select the zone ( if multi-zone system in a common enclosure ).
2. Initiate the functions programming mode ( see the manual ).
3. Make sure that the zone is set as SLAVE ( Fn34 enabled and , if required, set the appropriate combination of
functions Fn53,54 and 55 ).
4. Make sure that the zone has Fn91 or Fn90 or both functions enabled.
5. Set the clock time to the current time for the zone ( see the manual ) and wait till the display returns to showing the
clock time.
After the first minute of operation the slaves and the master seconds will fall in sync. The minutes may sync within the
first 10 minutes of operation.
Remember that in order to make the Master synchronize the zone slave clocks for the first time, it is a good practice to
set the slaves ( zones ) seconds as close as possible to the master seconds.
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