Keysight U8903B, Service Manual

Page: 92 / 165

5 Performance Verification for Bluetooth Card
92 Keysight U8903B Service Guide
Figure 5-11 U8903B Bluetooth test for A2DP profile (BT Role: Responder, Audio Role: SNK)
– The second set of Bluetooth tests for the A2DP profile is performed with the DUT’s
Bluetooth profile role configured as Responder and the audio role configured as Sink.
– The A2DP profile tests shown in Figure 5-11 are connectivity tests and consist of the
following:
– A2DP_RESP_SNK_SBC_Inquire, Pair & Connect
– A2DP_RESP_SNK_Disconnect & Unpair
– The connectivity tests validates the functionality of the DUT's ability to receive inquiry,
pairing, unpairing, connection, and disconnection.
– The remaining A2DP profile tests are the Bluetooth audio and functional tests, and
consists of the following:
– A2DP ANA Test
– A2DP APTX Functional Test
– The Bluetooth audio and functional tests are considered as subset tests that falls under
the A2DP profile. The A2DP Bluetooth pairing, profile connection, and media
connection have to be successfully established before the Bluetooth audio and
functional tests can be performed.
– The Bluetooth audio test validates the audio functionality of the maximum A2DP audio
bandwidth (48 kHz sample rate) using the CVSD audio codec for the analyzer.
– The A2DP APTX functional test validates the audio functionality of the APTX audio
codec to ensure that the APTX codec license option is loaded and accessible.