User's Manual

Chapter 17: Bluetooth I/O
APx500 User’s Manual 139
AVRCP generator commands are only acted upon
when the active measurement has a generator with
an ON/OFF button, and the generator is not disabled.
Commands
•The AVRCP command Play turns the generator On
•The AVRCP command Pause turns the Generato
r
Of
f
•The AVRCP command Stop turns the Generator
Of
f, and stops A2DP streaming.
•The AVRCP command Next Track increases th
e
ge
nerator Frequency equivalent to pressing the up
arrow on the frequency control in the panel
•The AVRCP command Prev Track decreases th
e
ge
nerator Frequency equivalent to pressing th
e
do
wn arrow on the frequency control in the panel.
•The AVRCP command Volume Up increases the
generator Level on Ch1 equivalent to pressing the
up arrow on the level control in the panel. Volume
Up messages are not received in legacy Bluetoot
h
mo
dules.
•The AVRCP command Volume Down decreases the
generator Level on Ch1 equivalent to pressing the
down arrow on the level control in the panel. Vol-
ume Down messages are not received in legacy
Bluetooth modules.
Steps in connecting APx to a Bluetooth
device
There are 3 steps involved in setting up a connection
between any Bluetooth devices. APx500 software pro-
vides more visibility and control of options for these
communication steps than most DUTs.
•Discovery
Discovery scans the area and lists any Bluetooth
devices that are not “undiscoverable” (hidden).
Many devices are undiscoverable by default, and
must be set to a discoverable mode through a
switching sequence.
•Pairing
Pairing establishes a mutual, secure relationship
between devices that have at least one compati-
ble profile. Pairing is stored in non-volatile memory
in each device. Devices can pair with more than
one other device.
•Connection
Paired devices can connect using compatible pro-
files and roles. Connection enables exchange of
audio or control data. Each device can connect
with only one device at a time.
Process for discovery, pairing and con-
nection
Actions Dialogs
Bluetooth Actions are commands that can be sent
from the APx analyzer to the Bluetooth device. The cur-
rent Bluetooth profile(s) and connection determine
which commands are available in the Bluetooth
Actions dialog box.
Typical Actions Dialog
Bluetooth Actions for
A2DP Source, HFP AG, AVRCP Target
For this profile set, these actions are available:
A2DP Source
For A2DP Source, the actions are
•Start Streaming / Stop Streaming
HFP Audio Gateway
For HFP Audio Gateway, the actions are
•Open SCO
•Dial
•Ring
•Close SCO