FDS TBox-41 User Manual page 11

TBox-Radio
11. Synchronization
There are 5 different methods to synchronize the TBox-Radio.
All manual input LEDs will flash yellow until a synchro is completed.
a) Sync at Zero
 This is the default synchro method for TBox-40. Once the TBox-Radio is switched ON, the
first impulse will sync the internal time at Zero
b) Internal Sync (TBox-41 only)
 This is the default synchro method for TBox-41. Once the TBox-Radio is switched ON, it is
synchronized with the internal RTC. RTC value is updated during a GPS or App Sync
c) GPS Sync
 To start the GPS Sync, ensure TBox-Radio is powered off, hold down the switch "Input 1"
while powering ON the TBox-Radio. Our PC or IOS setup application can also be used to
start the Synchro.
 The sync will commence once the TBox-Radio receives sufficient GPS data
 Once synchronized, the internal clock drift is constantly compensated by GPS signals (as
long as GPS coverage is maintained)
d) Manual
 A user defined time of day is sent via Bluetooth or via a com port. The synchro is started
using one of the 2 inputs or a radio impulse.
e) External
 External synchro uses the auxiliary 7 pins connector as the source of synchro. First a time
stamp has to be received on the aux RS232 port followed by the top synchro signal.
 This can be used to keep a perfect synchronization between two TBox (using a dedicated
cable). The Master TBox can be first synchronized using any other mode, then external
synchro is selected on the slave TBox.
 External synchro can be selected manually by pressing the switch "Input 2" while
powering the TBox.
f) Sync via app
 All synchro methods presented above can be controlled manually or automatically by
our Timing Applications
February 2023 - Version EN 2.5
www.fdstiming.com
User manual