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1.
Make sure the ASD-111i is programmed for the type of input CAV signal being
processed. Use the FORMAT push-button to make any modifications. Refer to
the note following this procedure.
2.
Depress the SELECT push-button. The Y GAIN, B-Y GAIN and R-Y GAIN LEDs
light up. Using the +/- push-buttons, a grouped gain calibration can be
performed.
3.
Depress the SELECT push-button. The Y GAIN, B-Y GAIN and R-Y GAIN LEDs
turns off and the Y GAIN LED lights up. The +/- push-buttons may now be used
to adjust the output G/Y gain.
5.
Depress the SELECT push-button. The Y GAIN LED turns off and the Y OFST
LED lights up. The +/- push-buttons may now be used to adjust the output G/Y
offset.
6.
Depress the SELECT push-button. The Y OFST LED turns off and the B-Y
GAIN LED lights up. The +/- push-buttons may now be used to adjust the output
B/B-Y gain.
5.
Depress the SELECT push-button. The B-Y GAIN LED turns off and the R-Y
GAIN LED lights up. The +/- push-buttons may now be used to adjust the output
R/R-Y gain.
6.
The next parameter to be adjusted is horizontal centering. Horizontal centering
is the timing difference between the active video and the horizontal sync.
Depress the SELECT push-button. The R-Y GAIN LED turns off and the H
CENTER LED lights up. Use the +/- push-buttons to adjust the horizontal
centering which has an adjustment range of -8 to +6 pixels by steps of
approximately 1 ns. Alternatively, depressing and holding the FORMAT push-
button while using the +/- push-buttons allows to make steps of 1/2 pixel.
7.
Depress the SELECT push-button once again in order to store the new changes
and to disable manual calibration.
Note:
You cannot adjust the Y GAIN for a format with setup if you do not have a
75%, 100%, or SMPTE color bars input CAV signal. This is due to the
fact that during manual calibration of the Y GAIN an automatic black level
correction is performed and therefore requires a signal with the correct
sampling zones. Refer to Figure 3.3. However, this constraint is not
applied when a non-setup format is employed because the automatic Y
OFST correction samples in the blanking region.
3.6 Recalling Default Values
In order to recall default values of the current video format make sure you are out of
manual calibration mode. Then, simultaneously press the +/- push-buttons. This
action will erase any changes made to the parameters by the user and recall the
default factory-set parameters. However, this procedure does not recall the H
CENTER parameter.
