APx Bluetooth Duo I/O Module for B Series: Specifications 63
BT
Bluetooth input/output module specifications
with APx500 v5.0 or higher measurement software
as fitted in APx52x, 555 and 58x B Series audio analyzers
NP0020.00044 rev 000
December, 2018
This illustration shows the Bluetooth Duo module, model 241.
These specifications cover the digital input and output functions of the Audio Precision Blue-
tooth Duo interface.
Bluetooth
®
is a short-distance (a few meters) control, data, and audio communications wireless
technology. Bluetooth uses low power, frequency-hopping radio in the 2.4 GHz band. Commu-
nication is two-way (for handshaking, metadata, etc); some profiles (HFP, for example) sup-
port duplex audio (both directions simultaneously); some profiles (A2DP) support only
simplex audio (one direction per connection). Audio Precision supports several audio-specific
Bluetooth profiles for audio test.
See acknowledgements on the copyright page at the front of the booklet.
Bluetooth specifications begin on the next page.
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