Keysight U8903B, Руководство по обслуживанию

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Performance Verification for Bluetooth Card 5
Keysight U8903B Service Guide 93
A2DP Bluetooth audio and functional test points and limits
The A2DP Bluetooth audio and functional test uses a sine wave signal to check the
frequency accuracy, amplitude accuracy, flatness, and THD+N ratio for the analyzer and
generator.
Table 5-4 shows the test points as well as the associated test limits for the maximum A2DP
audio bandwidth (48 kHz sample rate).
Table 5-5 shows the test points as well as the associated test limits for the A2DP APTX
functional test.
Table 5-4 A2DP Bluetooth audio test points and limits for analyzer and generator
Frequency (Hz) Amplitude (FFS) Frequency limit (ppm)
Amplitude accuracy
limit (dB)
THD+N ratio limit (dB)
1000 1 ± 10 -0.3 to 0.1 ≤ -45
20 1 ± 10 -0.8 to 0 ≤ -45
50 1
±
10 -0.6 to 0
≤
-45
100 1 ± 10 -0.3 to 0.1 ≤ -45
500 1 ± 10 -0.3 to 0.1 ≤ -45
2000 1 ± 10 -0.3 to 0.1 ≤ -45
3000 1
±
10 -0.3 to 0.1
≤
-45
5000 1
±
10 -0.3 to 0.1
≤
-45
10000 1 ± 10 -0.3 to 0.1 ≤ -45
12000 1 ± 10 -0.3 to 0.1 ≤ -45
18000 1
±
10 -1 to 0
≤
-45
Table 5-5 A2DP APTX functional test points and limits for analyzer and generator
Frequency (Hz) Amplitude (FFS) Frequency limit (ppm)
Amplitude accuracy
limit (dB)
THD+N ratio limit (dB)
1000 1 ± 130 -0.3 to 0.1 ≤ -45
20 1
±
130 -0.8 to 0
≤
-45
18000 1 ± 130 -1 to 0 ≤ -18