What would be the best parameters to set oscillators for 1 minute charts?

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all with the same basic setup on 900v chart.

 

whats 900v?

 

900 volume chart.

 

i use a standard 1 minute candlestick chart. not familiar with this 900v chart. please explain

 

For every 900 contracts traded, a candle or bar ect., appears like magic. Most charting programs screw it up though and don't cap them perfectly at 900 or 1000 or whatever volume setting you are using.

 

oh ok they refer to this is a "tick chart" i saw some traders use a 55 v chart.
what would be the advantage of using a chart like this? wont it be unpredictable? lets say volume drops off and on during the day. how do you know when the next candle will come at any moment?
additionally, on an average trading day how many price candles or bars would appear from lets say minute to minute?