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©
2022 DJI All Rights Reserved.
AGRAS T40/T20 P
Unmanned Aircraft Flight Manual
Low Battery and Low Voltage Warnings
The aircraft features a low battery warning, critical low battery warning, and critical low voltage warning.
1. When the low battery warning prompt appears in the app, y the aircraft to a safe area and land as
soon as possible. Stop the motors and replace the battery. The aircraft will enter RTH automatically
after the low battery warning prompt appears in the app if the Low Battery Action is set to RTH in the
Aircraft Battery settings.
2. The aircraft will automatically descend and land when the critical low battery warning or critical
voltage warning (battery voltage lower than 47.6 V) prompt appears in the app. Landing cannot be
cancelled.
Users can set the threshold of low battery warnings in the app.
RTK Functions
The aircraft has an onboard D-RTK. The heading reference of the aircraft from the dual antennas of
the onboard D-RTK is more accurate than a standard compass sensor and can withstand magnetic
interference from metal structures and high-voltage power lines. When there is a strong GNSS signal,
the dual antennas activate automatically to measure the heading of the aircraft.
The aircraft supports centimeter-level positioning to improve agricultural operation when used with the
DJI D-RTK 2 Mobile Station. Follow the instructions below to use the RTK functions.
Enable/Disable RTK
Before each use, make sure that the RTK signal source is correctly set to either D-RTK 2 Mobile
Station or Network RTK. Otherwise, RTK cannot be used for positioning. Go to Operation View in the
app, tap , and select RTK to view and set.
Set the RTK signal source to None if RTK positioning is not in use. Otherwise, the aircraft is not able to
take off when there is no differential data.
Using with the DJI D-RTK 2 Mobile Station
1. Refer to the D-RTK 2 Mobile Station User Guide for more information about completing the linking
between the aircraft and the mobile station and setting up the mobile station.
2. Power on the mobile station and wait for the system to start searching for satellites. The RTK status
icon on top of the Operation View in the app shows
RTK
FIX
to indicate that the aircraft has obtained and
used the differential data from the mobile station.
Using with the Network RTK Service
The Network RTK service uses the remote controller instead of the base station to connect to an
approved Network RTK server for differential data. Keep the remote controller on and connected to the
internet when using this function.
1. Make sure that the remote controller is connected to the aircraft and has access to the internet.
2. Go to Operation View in the app, tap
, and then RTK. Set the RTK signal source to Custom Network
RTK, and input the network information.
3. Wait for the remote controller to be connected with the Network RTK server. The RTK status icon on
top of the Operation View in the app shows
RTK
FIX
to indicate that the aircraft has obtained and used the
RTK data from the server.
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