Leica Geosystems Leica mojoXact Plus - Manual (Page 74)

74 Correction Sources, Leica mojoXact Plus
6 Correction Sources
Overview The mojoXact Plus can be configured to use one of the following correction sources
for position data:
• GL1DE
TM
- can be configured as the only source of position data for a
mojoXact Plus, utilising the GPS antenna installed on the vehicle, or as the backup
for position data in the event that the connection to the configured correction
source fails.
• Network RTK - utilises a network of permanent base stations operated by a
network provider, and therefore there is no need for a local base station.
Network RTK offers very quick convergence times compared to the other correc-
tion sources available. The Network RTK base stations are survey quality and
mounted in fixed positions, offering repeatability from year to year.
• Internal Radio (RTK Base Station) - utilises a local base station for position
data.
• External Radio - utilises an external base station or a UHF or VHF radio for posi-
tion data.
Each correction source and how to configure it for a mojoXact Plus that is used with
a third-party terminal, is discussed in the sections below. For information on correc-
tion sources when the mojoXact Plus is used with a Leica mojo3D, refer to the Leica
mojo3D User Manual.
6.1 GL1DE
Overview GL1DE
TM
can be used in two ways by the mojoXact Plus. The first is to use GL1DE
TM
as the only correction source for position data. The second is to use GL1DE
TM
as a
fallback when the signal to the configured correction source (such as Network RTK
or RTK Base Station (Internal Radio)) is lost. The loss of signal may be due to terrain,
vegetation or interference.
The mojoXact Plus must be receiving GPS data for GL1DE
TM
to work. When the
mojoXact Plus is receiving GPS data, displays in the Information Area of the main
navigation screen. Less bars display if the connection is weak. If there is no GPS
connection then is displayed and the problem needs to be resolved:
• Check the GPS antenna and cables for damage. If either is damaged it may be
necessary to have them replaced.
• Check that the GPS antenna is not obstructed and ensure that it has a clear view
of the sky.
• If there is still no GPS connection, restart the mojoXact Plus.