DragonLink V3 - Page 22

upstream data stops (ie. the bluetooth device is disconnected), downstream
telemetry data is no longer sent to the bluetooth connection. This setting is designed
to prevent overflow of the bluetooth module’s buffer which occurs when data is sent
to the module and no device is connected to receive it. When this happens,
bluetooth will not work until the DragonLink transmitter has been power-cycled
(reset).
In order to use receive-only telemetry (ie. with a device that does not send MavLink
heartbeats) this setting should be disabled. In this state, the user should be aware
that disconnecting the bluetooth device while the telemetry stream is active will
cause the module to crash and require reset of the DragonLink transmitter.
NOTE: This issue does not affect newer Slim transmitters with an
updated bluetooth module and thus, this setting has no effect.
Expansion con: Sets the type of data that will be streamed to the UEXP port on the
base of the transmitter.
Option
Function
Bi-directional
Radio modem
Passes raw serial data directly to and from the
connected device.
Yes
DragonLink Mavlink
Encodes non-MavLink telemetry from the aircraft
into a MavLink-compatible telemetry stream for use
with ground stations.
No
Taranis telemetry
Encodes either MavLink or non-MavLink telemetry
data into an S.Port telemetry stream for use with a
FrSky Taranis controller
No
Baud rate: Sets the serial baud rate of the UEXP expansion connector.
USB Function: Sets the type of data that will be streamed to the USB virtual COM
port.