CXA2094Q
Adjustment Method (Input signal level is the case when standard input signal is 245mVrms)
1. ATT adjustment
1) TEST BIT is set to “TEST1 = 0” and “TEST-DA = 0”.
2) Input a 100Hz, 245mVrms sine wave signal to COMPIN and monitor the TVOUT-L output level. Then,
adjust the “ATT” data for ATT adjustment so that the TVOUT-L output goes to the standard value
(490mVrms).
3) Adjustment range: ±30%
Adjustment bits:
4 bits
2. 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 300Hz
NR-ON) to COMPIN. At this time, adjust the “WIDEBAND” adjustment data to reduce TVOUT-R output
to the minimum.
3) Next, set the frequency only of the input signal to 3kHz and adjust the “SPECTRAL” adjustment data to
reduce TVOUT-R output to the minimum.
4) The adjustments in 2 and 3 above are performed to optimize the separation.
5) “WIDEBAND”
“SPECTRAL”
Adjustment range: ±30%
Adjustment range: ±15%
Adjustment bits: 6 bits
Adjustment bits:
6 bits
Adjust this through Tuner and IF when this IC is mounted on the set.
– 15 –
SONY [ SONY CORPORATION ]
