Bluetooth
XT3
User Manual
Janam Technologies LLC Version 1, March 2020
Bluetooth 5—2
Bluetooth Concepts
Bluetooth does not have to be on in order for the XT3 to function. In fact, since the Bluetooth radio
consumes power, it should be turned off when it is not needed. You can see that Bluetooth is active
when the small
Bluetooth icon
is visible in the
status bar
on top of the
home screen
. Swiping
down from the top of the XT3 screen reveals an extended view where Bluetooth can be turned on or
off. In the example shown below, the Bluetooth tile is lit up, which means Bluetooth is on.
Note that in Bluetooth terminology, there is a
difference between “
paired
” and “
connected
.”
Paired means that a Bluetooth relationship has
been established between two devices, and they
know each other. Connected means the devices
have an active connection.
Depending on the type of device, a connection
may be established automatically once already
paired devices are within range (like a Bluetooth
keyboard for a desktop computer). For other
paired devices it may make more sense to
manually connect them as needed (like for file
transfer between devices).
Bluetooth connections can have different
capabilities, such as sending or receiving files, providing certain information, providing certain types
of security, or connecting to certain sensors. Services can work one way or both ways.
In order for the XT3 to establish a Bluetooth connection, it needs to be
discoverable
, i.e. Bluetooth
must be on and other Bluetooth devices must be able to “discover” it as a connection candidate. To
make the XT3 discoverable, go to
Settings
>
Connected devices
>
Connection preferences
>
Bluetooth
and turn Bluetooth status on.
Note that it’s not always easy to determine the
nature of discovered devices, especially when
they are shown to the right, two are listed only
by the MAC (Media Access Control) hardware
address. To keep the XT3 from showing up with
such a code or serial number, rename it to
something descriptive (like “Janam XT3”).