Campbell DSP4 Especificações descarregar pdf (Página 157)

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Section 6. Data Table Declarations and Output Processing Instructions

The second dimension, when greater than 1, is determined by the value of the

element in the source array following the element checked for the crossing. It

is the value of this variable at the time the crossings are detected that

determines the second dimension.

0.5

1.5

2.5

3.5

0123456

Crossing Levels

Crossing Source

2nd Dim Boundary

2ndDim Source

FIGURE 6.4-2. Crossing Data with Second Dimension Value

Point Crossing

Source

2nd Dim

Source

Action

1 0.5 .7 First value, no counts

2 1.2 1.8 Add one count to first crossing,

second 2D bin, the signal crossed

Histogram:

2D < 1.25 1.25<2D<2.25 2.25<2D<3.25

Cross 1

0 1 0

Cross 1.5

0 0 0

Cross 3

0 0 0

3 1.4 .7 No levels crossed, no counts

4 0.3 .7 Crossed a level but was falling

edge, no counts

5 3.3 2.7 Add one count to first, second, and

third crossing bins in the third 2D

bin, the signal crossed 1, 1.5 and

6-23

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 329 330

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Campbell DSP4 Especificações Página 157

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