Campbell CR800 Spezifikationen PDF herunterladen (Seite 136)

Section 6. Data Table Declarations and Output Processing Instructions

6-18

To obtain the average of the weighted values that occurred while the bin select

value was within a particular sub-range, the weighted value output must be

divided by the fraction of time that the bin select value was within that

particular sub-range (i.e., a standard histogram of the bin select value must also

be output; for each bin the weighted value output must be divided by the

frequency distribution output).

The frequency distribution histogram is specified by entering a constant in the

weighted value parameter. Enter 1 to have frequency output as the fraction of

the total time that the bin select value was within the bin range. Enter 100 to

have the frequency output as the percent of time. Enter a variable name for the

weighted value histogram.

At the user's option, the histogram may be either closed or open. The open

form includes all values below the lower range limit in the first bin and all

values above the upper range limit in the last bin. The closed form excludes

any values falling outside the histogram range.

The difference between the closed and open form is shown in the following

example for temperature values:

Lower range limit 10° C

Upper range limit 30° C

Number of bins 10

Closed Form Open Form

Range of first bin 10 to <12° < 12°

Range of last bin 28 to <30° > 28°

Parameter

& Data Type

Enter

BinSelect

Variable or

Array

The variable that is tested to determine which bin is selected. The Histogram4D

instruction requires an array dimensioned with at least as many elements as

histogram dimensions.

DataType

A code to select the data storage format.

Constant

Alpha Code Data Format

IEEE4 IEEE 4 byte floating point

FP2 Campbell Scientific 2 byte floating point

DisableVar

Constant,

Variable, or

Expression

A non-zero value will disable intermediate processing. Normally 0 is entered so all inputs

are processed. For example, when the disable variable is ≠0 the current input is not

included in the histogram. The histogram that is eventually stored includes the inputs that

occurred while the disable variable was 0.

Value Result

0 Process current input

≠ 0

Do not process current input

Bins

Constant

The number of bins or subranges to include in the histogram bin select range. The width

of each subrange is equal to the bin select range (UpLim - LowLim) divided by the

number of bins.

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