cxa1992br Sony Electronics, cxa1992br Datasheet - Page 33

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cxa1992br

Manufacturer Part Number
cxa1992br
Description
Rf Signal Processing Servo Amplifier
Manufacturer
Sony Electronics
Datasheet

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These commands mainly control the balance and gain control circuit switches used during automatic tracking
adjustment and the bias circuit switch used during automatic focus bias adjustment.
In the initial resetting state, BAL1 to BAL4 switches and TOG1 to TOG4 switches are ON. Also, the IFB1 to 6
switches are ON.
• Balance adjustment
The balance adjustment switches BAL1 to BAL4 can be controlled by setting D6 = 0 and D7 = 0. The switches
are set using D0 to D3.
At this time, SENS1 outputs BALH and SENS2 outputs BALL.
Data is set by specifying switch conditions D0 to D3 and sending a latch pulse with D6 = 0 and D7 = 0.
Sending a latch pulse with D6, D7
• Gain adjustment
The gain adjustment switches TOG1 to TOG4 can be controlled by setting D6 = 1 and D7 = 0. These switches
are set using D0 to D3.
At this time, SENS1 outputs TGH and SENS2 outputs TGL.
In a fashion similar to the method used with the balance adjustment, set the data by specifying switch
conditions D0 to D3 and sending a latch pulse with D6 = 1 and D7 = 0.
Switch Control
BAL1 to BAL4
TOG1 to TOG4
Switch control
0 does not change the balance switch settings.
Balance adjustment
Gain adjustment
– 33 –
NO
Adjustment Completed
is the frequency high
Balance OK ?
Adjustment Completed
enough ?
SENS1/2
START
C.OUT
YES
GAIN OK ?
START
SENS1/2
YES
NO
CXA1992BR

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