CXA2094 Sony Corporation, CXA2094 Datasheet - Page 15

• Manufacturer Part Number: CXA2094
• Description: US Audio Multiplexing Decoder
• Manufacturer: Sony Corporation

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