Campbell Scientific CR7 Measurement and Control System - Manual (Page 110)

SECTION 10. PROCESSING INSTRUCTIONS
10-8
TABLE 10-1. Maximum Number of Outputs and Output Order for K Input Values.
(The output order flows from left to right and from top to bottom)
INPUTS: X1 X2 X3 X4 ..... XK
MAX NO. OUTPUTS
TYPE OUTPUTS (1st) (2nd) (3rd) (4th) (Kth)
Means K M(X1) M(X2) M(X3) M(X4) ..... M(XK)
Variances K V(X1) V(X2) V(X3) V(X4) ..... V(XK)
Std. Deviation K SD(X1) SD(X2) SD(X3) SD(X4) ..... SD(XK)
Covariance K/2(K-1) CV(S1,X2) CV(X1,X3) CV(X1,X4) ..... CV(X1,XK)
CV(X2,X3) CV(X2,X4) ..... CV(X2,XK)
CV(X3,X4) ..... CV(X3,XK)
... .
.. .
. .
CV(XK-1,XK)
Correlation K/2(K-1) CR(X1,X2) CR(X1,X3) CR(X1,X4) ..... CR(X1,XK)
CR(X2,X3) CR(X2,X4) ..... CR(X2,XK)
CR(X3,X4) ..... CR(X3,XK)
... .
.. .
. .
CR(XK-1,XK)
SYMBOL DEFINITION
M(XK) Mean of Kth value
V(XK) Variance of Kth value
SD(XK) Standard deviation of Kth value
CV(XK,X1) Covariance of Kth and Ith value
CR(XK,X1) Correlation of Kth and Ith value
MAXIMUM NUMBER OF POSSIBLE
OUTPUTS
No limitation exists on the number of inputs that
can be processed by the CV/CR Instruction, but
the processing time and Intermediate Storage
requirements increase rapidly. The instruction
requires that the input values reside sequentially
in Input Storage. Since the number of outputs
is specified for each type of statistical
calculation, the instruction starts with the first
value, working sequentially through the input
values. For this reason, the order of the input
values determines which values are processed.
Table 10-1 shows the maximum number of
outputs which can be generated and the output
order for K input values located sequentially in
Input Storage. The output order shown in Table
10-1 flows from left to right and top to bottom.
INSTRUCTION PROCESSING
The CV/CR Instruction contains three separate
processing phases:
1. Input Processing
2. Averaging Period Processing
3. Output Processing