Oxford Technical Solutions
16
Operation
The GPS-Base has been designed to be as easy to operate as possible. However, it is
important to have a sound understanding of how the system works, so please read the manual
thoroughly before operating the product.
The set-up procedure is summarised below. More detailed information on each step is also
presented in the following sections.
Process of setting up the GPS-Base:
1. Select a stable, suitable location for the GNSS antenna.
2. Connect all cables and then power up the system.
3. Configure the system, if required.
4. Download and convert the data if required.
General precautions
• The GPS-Base unit should not be left in the rain or other wet conditions.
• Ensure the antenna is not affected by gusts of wind—such as when vehicles pass.
• Never extend or shorten the GPS antenna cable. The loss in the cable is carefully
matched to the GPS-Base and lengthening or shortening the cable will reduce
the performance of the system.
• Never connect the GNSS antenna to the radio aerial connector, which uses the
same connector. The use of two TNC connectors is required since they have
much better ground properties compared to BNC connectors. The radio aerial
output has a high-power signal that may damage the GNSS antenna.
Selecting a suitable antenna location, and setting up the tripod
For the GPS-Base to work to specification, it is essential to put the antenna in a location
where it has a clear view of the sky. GNSS antennas do not only look for satellites from
above, they also receive signals from the side-down to an elevation of about 10° in all
directions. For that reason, it is important to place the antenna in the most open location
available to you.
One error that no base station can easily correct for are multi-path reflections from buildings
and trees. To avoid these, do not locate the antenna near trees and buildings, or other tall hard-