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Trimble R7/R8 GPS Receiver User Guide 117
Setting up the Receiver 13
Trimble R8 Operation
13.3 Setup Guidelines
Consider the following guidelines when setting up the Trimble R8
receiver.
C
Caution – You must maintain a minimum separation distance of 20 cm
(approximately 8 in.) between yourself and the radiating GSM antenna for
this device to satisfy the RF Exposure requirements of the FCC.
For mobile operation, the maximum gain of the GSM antenna must not
exceed 0 dBi.
133.1 Environmental conditions
Although the Trimble R8 receiver has a waterproof housing,
reasonable care should be taken to protect the unit. Avoid exposure to
extreme environmental conditions, including:
• Water
• Heat greater than 65 °C (149 °F)
• Cold less than –40 °C (–40 °F)
• Corrosive fluids and gases
133.2 Sources of electrical interference
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