Campbell Scientific ID-2000W Software - Manual (Page 53)

SECTION 5. CALCULATED PARAMETERS
5-3
the error. Should such an error occur, a value
equal to that entered in the Error Value edit box
will be substituted for the values that could not
be calculated. The default Error Value is -
99,999,999.0 but may be changed to any value
desired.
NOTE: You may specify any value you
wish for the Error Value. However, you
should use a value that would NEVER be
possible to avoid future confusion as to
whether a data point represents a true value
or a calculation error.
5.2 MATHEMATICAL FUNCTIONS
Mathematical functions can be used in the
equation of a calculated parameter.
Mathematical functions have the form of:
FUNCTION(argument)
where ‘FUNCTION’ is the name of the
mathematical function (i.e. - ABS, COS, SIN,
etc.) immediately followed by a left parenthesis
and no spaces. The function argument may
consist of any combination of parameters,
operands and/or other functions. The argument
must always be followed by a matching right
parenthesis. The following is a list of
mathematical functions you may use when
entering a calculated parameter:
ABS(n)
Finds the absolute value for n.
ACOS(n)
Calculates the arccossine of n where n must be
a value less than 1.0 and greater than -1.0.
ASIN(n)
Calculates the arcsine of n where n must be a
value less than 1.0 and greater than -1.0.
ATAN(n)
Calculates the arctangent of n.
COS(n)
Calculates the cosine of n where n must be a
value less than 134219000.0 and greater than -
134219000.0
COSH(n)
Calculates the hyperbolic cosine of n where n
must be a value less than 712 and greater than
-712.
LOG(n)
Calculates the log base 10 of n where n must
be a value greater than 0.0.
LN(n)
Calculates the natural log of n where n must be
a value greater than 0.0.
SIN(n)
Calculates the sine of n where n must be a
value less than 134219000.0 and greater than -
134219000.0.
SINH(n)
Calculates the hyperbolic sine of n where n
must be a value less than 712 and greater than
-712.
TAN(n)
Calculates the tangent of n where n must be a
value less than 134219000.0 and greater than -
134219000.0
TANH(n)
Calculates the hyperbolic tangent of n.
All mathematical functions use only upper case
characters. When using them in an equation be
sure to enter them just as they appear in the
Math Functions list box.