cxa1992r Sony Electronics, cxa1992r Datasheet - Page 34

• Manufacturer Part Number: cxa1992r
• Description: Rf Signal Processing Servo Amplifier
• Manufacturer: Sony Electronics

• Focus bias adjustment
The focus bias adjustment switches IFB1 to 6 can be controlled by setting D6 = 0 and D7 = 1. The switches
are set using D0 to D5.
At this time, SENS1 outputs FOH and SENS2 outputs FOL.
Data is set by specifying switch conditions D0 to D5 and sending a latch pulse with D6 = 0 and D7 = 1.
• TGFL
• LPC
• LPCL
• LDON
The tracking gain can be switched by setting D5 with D6 = 1 and D7 = 0.
The tracking gain is GAIN UP with D5 = 1 and NORMAL GAIN with D5 = 0.
When using a pickup with a low tracking gain, the tracking gain can be raised by approximately 6dB by
setting GAIN UP.
(This command does not raise the gain during playback.)
The laser power control circuit can be turned ON and OFF by setting D0 with D6 = 1 and D7 = 1.
The circuit is ON with D0 = 1 and OFF with D0 = 0.
The laser power control limit can be switched between ±10% and ±30% by setting D1 with D6 = 1 and D7 = 1.
The control limit is ±10% with D1 = 0 and ±30% with D1 = 1.
The laser diode can be turned ON and OFF by setting D2 with D6 = 1 and D7 = 1.
The laser diode is ON with D2 = 1 and OFF with D2 = 0.
IFB1 to 6
Switch Control
Focus bias adjustment method
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NO
Adjustment Completed
YES
BIAS OK ?
START
SENS1/2
CXA1992R