Instruction Manual PEL-4 Precision LED Sector Light Vega Industries Ltd Aug 2018
PEL-4 Precision LED Sector Light Page 21 of 69 Manual Version V1.06
5.5 Synchronising Options
Three options are available for synchronisation on the PEL-4:
Hard wired synchronisation;
External GPS synchronisation using Vega VSU-29 module. A monitoring or AIS
product can also be used.
Hard wired synchronisation can be used where the other beacons to be synchronised are
within practical wiring distance. Otherwise, external GPS-based synchronisation can be
used.
For Vega LED products, the sync pulse has a unique format including a positive to
negative transition and day/night information. Each PEL-4 can be set to be a sync master
or sync slave. As a sync slave, the PEL-4 will not generate sync pulses and will only turn
on if sync pulses are received. A PEL-4 set to be a sync master (the default) will generate
a sync pulse at the start of the flash character. Where a set of hardwired beacon have
inter-connected syncs and are all masters the first light to send a sync pulse will control
the other lights.
In slave mode a PEL-4 will operate on the basis of the sync pulses received and will stop
operating after a programmed number of flash cycles after the sync pulse is lost. To
program a slave PEL-4 to keep running for a number of flash cycles after the loss of the
master sync pulse:
Operation =Program (or read) =1 (or 9)
Feature =Additional Sync Options =7
Value =0YY
Where YY is the number of flashes after loss of sync (a minimum of 2 is recommended).
Programming a flash count of 998 will put the PEL-4 into Sync low off mode – where the
PEL-4 will turn off if the sync line is grounded. Obviously normal sync will not work if this
option is selected. Programming a flash count of 999 will turn off the Sync low off mode.
A master-sync or slave-sync PEL-4 can have its flash character offset in time from another
beacon using the Sync Delay feature. The Sync Delay setting causes the PEL-4 to delays
its flash character with respect to the flash character of connected beacons by the delay
period. This function also works with GPS synchronisation.
Operation =Program (or read) =1 (or 9)
Feature =Synchronisation =3
Value =XYY (999 disables
synchronisation)
X determines if the PEL-4 is a master or slave unit.
0YY Sync Master (with GPS enabled if detected)
1YY Sync Slave
2YY Sync Master with GPS disabled
YY allows for the start of the flash character to be delayed from 0.0 seconds to 9.9
seconds in 0.1 second increments. For example YY=25 would provide a delay of 2.5
seconds.
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