Chapter 2 Geode Features 13
Owner's Manual
2.3.3 Atlas Correction Service
The Atlas Correction Service is a worldwide L-band satellite
based correction that covers 75° north and south of the
equator.
The Geode GNS3M includes an option to subscribe monthly
or annually to Atlas to receive extra corrections. The three
options provided are Atlas Basic, H30, and H10.
Atlas Basic: as good as 50 cm accuracy (similar to SBAS)
with 95% precision
H30: as good as 30 cm accuracy with 95% precision
H10: as good as 10 cm accuracy with 95% precision
This correction service varies depending on tree cover, and
does not work under a heavy tree canopy.
When using Atlas corrections, the satellites can take time to
converge depending on the subscription you have.
Atlas Basic: typically 5 minutes or less
H30: typically 15–30 minutes or less
H10: typically 30 minutes or less
To check the level of subscription of your unit, go to
Receiver Configurations > Manage Subscriptions.
2.4 Update Interval Rate
The standard Geode configuration comes with an update
interval rate of 1 Hz. This means the Geode updates its
position and outputs that data to the connected device
once per second.
There is an optional upgrade for update intervals up to 10
Hz or 20 Hz (10 or 20 updates per second) available. These
upgrades also allow for update adjustments of 2 Hz, 5 Hz,
and 10 Hz. Higher update rates are important for projects in
which you are collecting data at faster speeds.
Note: Currently, iPhones and iPads do not support update
rates faster than 2 Hz.
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