User's Manual

Table Of Contents
GeoExplorer 6000 Series User Guide 75
Using the GNSS Receiver 5
4. Do one of the following:
If you selected Automatically check and activate purchased options:
a. Ensure that the device is connected to the Internet (using a USB cable and
the ActiveSync technology, or a Wi-Fi connection or Bluetooth wireless
connection using the modem—see Chapter 6, Getting Connected).
b. Tap
Get Updates.
c. The Option Activation Wizard will run. When the wizard finishes, restart
your device to complete the activate process.
If you selected Manually activate purchased options:
a. Copy the activation XML file that you reecieved from your Trimble reseller
to a folder on the device.
b. Tap
Get Updates.
c. Browse to the folder that contains the activation file.
d. Tap the file to initiate the activation process.
e. The Option Activation Wizard will run. When the wizard finishes, restart
your device to complete the activate process.
Differential GNSS explained
Use differential GNSS to correct errors in your collected data. Differential GNSS
(DGNSS) requires one or more additional receivers, called base stations or reference
stations, which are located at known points. Data collected at the base stations is used
to determine GNSS measurement errors and compute corrections to these errors. An
unlimited number of mobile GNSS receivers, called rovers, collect GNSS data at
unknown locations within the vicinity of the base station. Errors common at both the
base station and the rover receiver are corrected with DGNSS either in real time or
during postprocessing.
Real-time DGNSS
In real-time DGNSS, the base station calculates and broadcasts the error for each
satellite as each measurement is received, enabling you to apply corrections while in
the field and collect accurate GNSS data. DGNSS corrections are available from a
variety of public and commercial sources. They can be generated and broadcast in
real-time by privately or self-owned GNSS base stations, or by a wide range of
government agencies.
Real-time DGNSS sources include external beacon and radio sources, as well as
Satellite Based Augmentation Systems (SBAS) such as WAAS in the US, EGNOS in
Europe, MSAS in Japan, and VRS networks. SBAS and VRS networks use multiple base
stations to calculate the DGNSS corrections that are then delivered to the user from a
Geostationary satellite (SBAS) or from a radio or cellular phone (VRS networks).