CXA1734S
5
SAP block filter adjustment
1. TEST BIT is set to “TEST1 = 1” and “TEST-DA = 0”.
2. Input a 88 kHz, 120 mVrms sine wave signal to COMPIN. While monitoring the STATUS FLAG (STA4)
condition, vary and adjust the “SAPLPF” adjustment data.
3. Adjustment range:
Adjustment bits:
±20%
4 bits
Align SAPLPF with the center of the STA4 = 1 (adjustment OK) condition range.
Adjustment point
Control data
"SAPLPF"
0
F
1
0
Measurement data
STA4 "SAPLPF"
6
Separation adjustment
1. TEST BIT is set to “TEST1 = 0” and “TEST-DA = 0”.
2. Set the unit to stereo mode and input the left channel only signal (modulation factor 30%, frequency
300 Hz) to COMPIN. At this time, adjust the “WIDEBAND” adjustment data to reduce ROUT output to
the minimum.
3. Next, set the frequency only of the input signal to 3 kHz and adjust the “SPECTRAL” adjustment data
to reduce ROUT output to the minimum.
4. Then, the adjustments in 2 and 3 above are performed to optimize the separation.
5. “WIDEBAND”
Adjustment range:
Adjustment bits:
“SPECTRAL”
±30%
6 bits
Adjustment range: ±15%
Adjustment bits:
6 bits
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SONY [ SONY CORPORATION ]
