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The A/D oscillator is a "normalized" oscillator.

An A/D oscillator is divided by a number that is a multiple of a period's range. Each period is treated independently. This "normalizes" the study and enables it to adapt to changing trading ranges.
Formula:

Where:
BP = buying power, or high-open
SP = selling power, or close-low
H = high
L = low

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 Parameter  | 
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 Color  | 
 Default color is Yellow. To change the color, click on the color button: 
 
 
 Then choose the color you want from the Color Menu. 
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 Graph  | 
 Sets the drawing method for the study. 
 
 
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 Line Style  | 
 Sets the rendering technique of the graph parameter (if it is set to Line). 
 
 
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 Line Width  | 
 Sets the thickness of the study line. 
 
 
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Notes
The signals given by Accumulation/Distribution involve the concepts of divergence and confirmation.
Accumulation/Distribution issues a bullish signal on positive divergence. Beware of weak positive divergence. The object is to identify the dominant trend of the Accumulation/Distribution line. A two-week positive divergence weaker than while a month-long positive divergence. The converse of these principles apply to negative divergence.
The Accumulation/Distribution Line measures the volume force behind a move. As a volume-based study, Accumulation/Distribution helps determine whether instrument volume is increasing on advances or declines. There are several applications of this study:
Gauge money flow. An uptrend indicates prevalent buying while a downtrend indicates prevalent selling.
Identify divergence, positive and negative
Confirm the strength and sustain-ability of a move.
see, Kaufman, P. J., The New Commodity Trading Systems and Methods, New York: John Wiley & Sons, 1987.