Sealite SL-300-2D5 Series, Инструкция по установке и обслуживанию

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SL-300-2D5 Series
13-19NM Marine Lanterns
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www.sealite.com
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Optional GPS Synchronisation
The lanterns can be fitted with a GPS module, and provide the user with the ability to install
independently operating lanterns that all flash in synchronisation.
No additional power supplies, aerials or control systems are required, and with its microprocessor-
based system, the GPS option is specifically designed to provide maximum reliability and performance
over a wide range of environmental conditions.
Operating Principle
Each light operates independently and requires no operator intervention. A minimum of 4 satellites
need to be in view for the built-in GPS receiver to collect time data. At dusk, the light sensor will turn
the light on. If time data is available the light will come on synchronised to every other light with the
same selected flash code.
Synchronisation is achieved using an internal algorithm based on the highly accurate time base and
time data received from the satellites. The satellite data is provided from a number of earth stations
using atomic clocks as the time base. Continuous self-checking ensures that the light will continue to
run in synchronisation.
First time power up (Dusk-to-Dawn)
On first time power up, the GPS wakes up and obtains a position fix (<1min) and then remains on for
up to 12.5 mins for leap seconds data. After which the GPS is turned off and will reawaken at a period
that is set by the battery voltage and the light sensor.
For a Good Battery Voltage
At night, the GPS wakes up every 15 mins for <1min
During the day, wakes up every 30 mins
For a Low Battery Voltage
At night, the GPS wakes up every 20 mins for <1min
During the day, wakes up every 60 mins
For Flat battery
The GPS is disabled and the lantern is off.
For STANDBY operation mode, the GPS receive is never turned on.
For ALWAYS ON mode, the lantern operates the GPS receiver as if the light sensor has detected
darkness but it still governs the on/off time according the battery voltage.
Light Activation
At power-up the microprocessor checks that the internal GPS module is programmed correctly and is
able to provide valid time base and time data.
Once outside with a clear view of the sky, valid data should become available within 20 minutes.