cxa2064m Sony Electronics, cxa2064m Datasheet - Page 13

• Manufacturer Part Number: cxa2064m
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Adjustment Method
1. Input level adjustment
2.Separation adjustment
Adjust this IC through Tuner and IF when this IC is mounted on the set.
1) Connect components as shown in Fig. 1.
2) Set the US MPX encoder output to MONO 100Hz 100% modulation.
3) Adjust the "ATT" so that COMPIN (Pin 7) level goes to 100mVrms (±0.5dB).
1) Mode control pin are set to FOMO (Pin 17): L, M1 (Pin 18): L, MUTE (Pin 19): L.
2) Set the US MPX encoder ouput to Stereo Lch-only 300Hz 30% modulation, NR-ON.
3) Next, set the frequency only of the input signal to 3kHz and adjust the variable resistor of VEWGT (Pin 29)
4) The adjustments in 2 and 3 above are performed to optimize the separation.
Then, adjust the variable resistor of SUBOUT (Pin 2) to reduce the TVOUT-R output to the minimum.
to reduce the TVOUT-R output to the minimum.
US MPX encoder
Fig. 1. Adjustment setup
ATT
– 13 –
COMPIN (Pin 7)
4.7µ
CXA2064M
CXA2064M