White Bear Technologies RoamEO GPS Pet Location System - Manual (Page 22)

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Setting up a GPS Fence
The GPS Fence can be a valuable feature to assist you in protecting
your pet. However, it is not meant to be substitute for human initiative
and we do not recommend this as a pet containment system. The
GPS Fence feature allows you to establish a perimeter that when
combined with the Alarm will give an audible warning if your pet exits
your defined boundary. Before setting up a GPS Fence, a few
moments of forethought are in order.
Please read the following carefully:
1. All GPS systems can be affected by dense cover, whether foliage,
heavy cloud cover, or buildings. To improve the accuracy of your
GPS Fence, it is recommended that you set up your fence on a
clear day. Be aware of your surroundings as you establish your
fence posts. You may want to move your fence post slightly if you
encounter a problem with a particular location due to weak GPS
reception.
2. Take note of the relative amount of precision of GPS as you estab-
lish your fence. It is recommended that you set your fence at least
10-15 feet away from areas of concerns (i.e, roads) to account for
GPS precision. You can refer to the Accuracy reading on the
Toolbar to understand the relative accuracy of GPS at a particular
position. If you stand still in a single spot for an extended period
of time, GPS accuracy will usually improve.
3. You may want to have a good idea of the basic outline of your
fence before you begin to set fence posts. You will need to estab-
lish a minimum of three fence posts. There is no need to return to
your first post: the GPS Receiver will automatically draw a line
to that position.
4. Try to allow for a minimum of at least 15 feet between any two fence
posts. There is no maximum distance between any two fence posts;
you can place fence posts as far apart as you desire. RoamEO will
allow you to set up to 100 fence posts, but we recommend using the
minimum amount that are needed to define the particular shape of
your desired fence.