Setup guidelines

Consider the following guidelines when setting up the receiver:

• When operating the receiver in member states of the European Union and in other counties which adhere to the EU R&TTE requirements, while in the vicinity of aeronautical radionavigation equipment operating between 2700 and 2900 MHz, or Fixed, Fixed Satellite (space to Earth) or Mobile systems operating at 4170 MHz, a minimum separation of 5 meters must be maintained between the receiver and such radio equipment.

• Place the GNSS antenna in a location that has a clear line of sight to the sky in all directions. Do not place the antenna near vertical obstructions such as buildings, deep cuttings, site vehicles, towers, or tree canopy. GNSS rovers and the base station receive the same satellite signals from the same satellites. The system needs five common satellites to provide RTK positioning.

• GNSS satellites are constantly moving. Because you cannot measure at a specific location now does not mean that you will not be able to measure there later, when satellite coverage at the location improves. Use GNSS planning software daily to identify the daily best and worst satellite coverage times for your location and then choose measurement times that coincide with optimal GNSS performance. This is especially important when operating in the worst GNSS locations. You can download the Trimble Planning software from the Trimble website. From this webpage (http://www.gnssplanningonline.com/) you can also use Trimble GNSS Planning Online.

• To get a fixed position solution with centimeter precision, initialize the RTK rover receiver. For initialization to take place, the receiver must track at least five satellites that the base station is also tracking. In a dual-satellite constellation operation, for example, GPS and GLONASS, the receiver must track at least six satellites.

• To continue to survey at centimeter precisions, the rover must continuously track at least four satellites that the base station is also tracking. The radio link between the base and rover receivers must also be maintained.

• Loss of the satellite signals will result in a loss of centimeter position precision.

• Although the receiver has a waterproof housing, take reasonable care to protect the unit. Avoid exposure to extreme environmental conditions when operating the receiver, including:

  • Water

  • Heat greater than 55 °C (131 °F)

  • Cold less than –20 °C (–4 °F)

  • Corrosive fluids and gases

• Avoid the following sources of electrical and magnetic noise:

  • Gasoline engines (spark plugs)

  • Televisions and PC monitors

  • Alternators and generators

  • Electric motors

  • Equipment with DC-to-AC converters

  • Fluorescent lights

  • Switching power supplies