|Format||AFADJ [X= zero pot value] [Y= video amplitude value] [Z= value]|
|Remembered||Using SS Z|
|Format||[Addr#]AFADJ [X= zero pot value] [Y= video amplitude value] [Z= value]|
|Remembered||Using [Addr#]SS Z|
X & Y values range between
0 and 100. Y determines amplitude of the video signal entering the system. Setting a 0 value attenuates a video signal completely, while a setting of 100 lets the full signal go through. Attenuating a video signal also reduces the noise in the signal. If the focus value on the LCD reads
2047, then the system is saturated with too much signal, try reducing the Y value.
X is the zeroing potentiometer; the value of X should be set such that, when Y is
0, the focus value is also
0000 (or as close as possible).
Z sets the gain of the final Analog to Digital Converter (ADC) in the auto-focus system. Range:
0 to 3. By adjusting this setting, a focus value for a sparse sample can be magnified to get better focus. If an incorrect value of gain is used, the ADC saturates and the focus value reaches
2047. Upon system restart, the setting returns to its default value of 0. Perform an SS Z command to save the current gain setting in non-volatile memory.
:A or Error Reply
AFADJ X=15 Y=95 :A<CR><LF>
(Error indicates missing arguments)
AFADJ X=1000 Y=-12 Z=4 :N-4
(Error indicates arguments out of range)
AFADJ X=20 Y=90 :N-5
(Error indicates operation failed, try entering one argument at a time)
AFADJ X? Y? :A X=20 Y=95