cxa2134q Sony Electronics, cxa2134q Datasheet - Page 16

• Manufacturer Part Number: cxa2134q
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Adjustment Method
The resister data is set to the standard value.
1. ATT adjustment
2.Separation adjustment
1) Input a 100Hz, 245mVrms sine wave signal to COMPIN and monitor the TVOUT-L output level. Then,
2) Adjustment range: ±20%
1) Input ST-L signal (modulation factor 30%, frequency 300Hz NR-ON) to COMPIN. At this time, adjust the
2) Next, set the frequency only of the input signal to 3kHz and adjust the “SPECTRAL” adjustment data to
3) The adjustments in 1 and 2 above are performed to optimize the separation.
4) “WIDEBAND”
Note) Adjust this IC 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:
“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:
– 16 –
6 bits
CXA2134Q