American Time AllSync Plus - Manual (Page 14)

© American Time
14
AllSync Plus Clock Installation
& Operation Manual
Glossary
Appendix B LED
Illumination
Appendix A
Specifications
Tr
oubleshooting
General Operation
Installation
Intr
oduction
Installation
AllSync Plus Startup Routine
LED location on back of clock
The AllSync Plus clocks operate differently from their fixed clock protocol mechanical counterparts and from the
older AllSync clocks.
After power is initially supplied to the AllSync Plus clock run line the following will occur:
1. The clock will charge its internal backup power cell and undergo startup diagnostics.
Note: This may take from 1-9 minutes. During this charge period the clock will run through the start
up diagnostics indicated by the LED on the back of the clock and the clock hands will remain still.
2. The second hand will begin slow stepping (moving 1 second on the clock face for every 3 seconds real
time).
Note: This stage will last for approximately 3 minutes. While the second hand is slowly stepping the
LED on the back will flash green. The green flashing LED indicates the microprocessor is telling the
movement what time it is. The default time for the circuit board is 12:50. This is the time the
movement receives on startup and after extended power outages (greater than 15-20 minutes).
3. The clock will rapidly advance and the LED will turn solid red.
Note: The solid red LED indicates the clock circuit board has not received a 12 hour correction.
4. The clock will stop rapid advancement sometime between 12:50 and 1:15 as seen on the clock face
and begin running at the correct pace (1 tick per second).
Note: The rapid advancement of the hands may pause periodically for the clock to find its position.
Rapid advancement will continue shortly after the clock has completed its location check.
Note: Rapid advancement may last as long as 15 minutes. Total rapid advancement time depends on
hand location prior to startup.
5. When the time on the clock face reaches approximately 2:02, the clock hands will rapidly advance to
match the minutes on the master clock connected to it.
Note: If a master does not send a valid correction, the AllSync Plus clock cannot synchronize its minutes
to the master.
Note: The minute and second hands will be on time with the master after this rapid correction.
6. Approximately 5 minutes after the conclusion of the first 12 hour correction from the connected
master the AllSync Plus clock will rapidly advance to match the exact time on of the master (hour
hand will correct).
Note: The AllSync Plus clock is set up at the factory for clock code 01 (xx:57:54 – 8 second hourly
correction, 5:57:54 – 14 second 12 hour correction). If running a different clock protocol, the AllSync
Plus clock may require an additional 12 hour correction to recognize the different clock protocol. If this
is the case, allow 24 hours for the clock to synchronize.
LED