NTS-4000-R
www.
galsys
.co.uk
galleonsupport
.com
TEL:
+44 (0) 121 608 4433
FAX:
+44 (0) 121 608 4477
GPS ANTENNA
Tracking up to 12 satellites at the same time, GPS offers an accurate signal capable of a reliable
and consistent reading anywhere in the world. Used extensively for synchronising time from one
location to another, GPS signals are received globally and maintain a high level of accuracy.
Functional up to 1000m (3,000 ft.) away from the time server, additional cable length can be
added to the supplied 10m to increase cable size to desired length. An extra power supply is
recommended past the length of 550m to ensure the unit is running at optimum efficiency.
The GPS antenna is encased in a weatherproof IP65 enclosure and should be mounted on the roof
of a building with a 180-degree view of the sky.
The antenna can be mounted to the side of the building; however, limiting the view of the sky will
have an effect on the units’ ability to synchronise. Units mounted to the side of the building will
experience short periods of time where the antenna is unable to see the three satellites required
to achieve synchronisation.
Some things to avoid are older computer monitors, switch mode power supplies and air
conditioning units.
The GPS antenna uses eight-core signal cable and will function on a cable run of up to 550 metres
drawing power from the rack-mount unit, if you require the antenna to have an extended cable
run of up to 1,000 metres then a power supply is required. This power supply feeds directly into
the GPS antenna and as such, would need to be located on the roof too. In most cases however,
550 metres is more than adequate.
The Operating temperature for the antenna is -40 Celsius to +85 Celsius so it may be worth noting
that the temperature inside the enclosure can be considerably different from the external
temperature, especially when the antenna is located in a position where it is in direct sunlight.
When mounting a GPS antenna it may be worth noting that satellites dishes can have a negative
effect on the unit, it’s best to keep the GPS antenna at least ten metres from them.
