2 Overview
6 Trimble R6/R7 GPS and Trimble R8 GNSS Receivers User Guide
Trimble R7 GPS Receiver Operation
2.1 Features
The receiver provides the following features:
• Trimble R-track technology, which enables the receiver to track the L2 Civil
signal (L2C)
• Centimeter-accuracy real-time positioning with RTK/OTF data, and up to 10 Hz
position updates
• Submeter-accuracy real-time positioning using pseudorange corrections
• Adaptive dual-frequency RTK engine
• WAAS/EGNOS capability (Wide Area Augmentation System/European Geo-
Stationary Navigation System)
• Automatic OTF (on-the-fly) initialization while moving
• 1PPS (One Pulse Per Second) output
• Dual event-marker input
• USB port for data transfer
• Type I CompactFlash card for data storage
• Internal charging of batteries (no external battery charger required)
• Three RS-232 serial ports for:
– NMEA output
–RTCM SC-104 input and output
– Trimble Format (CMR
™
) input and output
• Two TNC ports for connecting to the GPS and radio antennas
2.2 Use and Care
The Trimble R7 GPS receiver can withstand the rough treatment that typically occurs
in the field. However, the receiver is a high-precision electronic instrument and should
be treated with reasonable care.
C
WARNING – Operating or storing the receiver outside the specified temperature range
can damage it. For more information, see Physical specifications, page 56.
High-power signals from a nearby radio or radar transmitter can overwhelm the
receiver circuits. This does not harm the instrument, but it can prevent the receiver
electronics from functioning correctly. Avoid using the receiver within 400 meters of
powerful radar, television, or other transmitters. Low-power transmitters such as those
used in cellphones and two-way radios normally do not interfere with receiver
operations.
For more information, contact your local Trimble distributor.
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