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2
4
4
4l
41
FP]
FP
FP
2
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More
than ofre Rainflow Histogram can
be
calculated u$ing the Repetitions parameter. The
swath
of inpirt data, the size
of
the mean and
amplitude difnensions,
the low and high limits of
the input
datla,
and minimum distance between
peaks and v6lley are all selectable
by
the user
with paramelers.
Data are output
to
Final Storage
or
to
Input
Storage for
further processing when the
datalogger's
Output Flag
is
set.
Partial
accumulatiofrs are kept
in Intermediate Storage.
PAR. DATA
NO. TYPE
DESCRIPTION
Repetitions
Input location of input data
Swath (per rep) of data at input
location;
1
=
oh line processing
No. of Mean bins
No. of
Amplitude bins
Low limit
of input data
High limit
of input data
Minimum
distance between peak
and valley
Option (AB)
A: Form
0
=
closed,
1
= open form
B:
Output 0
=
fraction,
1 =
counts
Input location
to start storing
histogram.
Enter
0
to send
output directly
to Final Storage.
SECTION 11. OUTPUT PROCESSING INSTRUCTIONS
*** 82
STANDARD DEVIATION
IN
TIME
***
FUNCTION
Calculate
the standard deviation (STD DEV) of
a
given input
location. The standard deviation
is
calculated using the formula:
s
=
((EXi2
-
(>Xi)2/N)iN)1/2
where
X; is
the ith measurement and N
is
the
number of samples.
PAR. DATA
NO. TYPE
DESCRIPTION
2
Repetitions
4
Starting input location
no.
Outputs
generated:
1
for each repetition
Execution
tidne:
6.5
-
7.0 msec, with 60
Amplitude
{ns
and
1
Mean
Bin.
Intermediat( Storage locations
required:
Reps x
(Bins+2
x (No.Amplitude Bins) + 4), where Bins
= No.
Meanf
Bins
x No. Amplitude
Bins.
11-7
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