APx Bluetooth I/O Module for B Series: Specifications 69
BT
Bluetooth input/output module
specifications
with APx500 v5.0 or higher measurement software
as fitted in APx517, 52x, 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 wire-
less technology. Bluetooth uses low power, frequency-hopping radio in the 2.4 GHz band.
Communication is two-way (for handshaking, metadata, etc); some profiles (HFP, for exam-
ple) support 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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