Campbell Scientific CR5000 Measurement and Control Module - Manual (Page 202)

Section 8. Processing and Math Instructions
8-30
The Sin function takes an angle and returns the ratio of two sides of a right
triangle. The ratio is the length of the side opposite the angle divided by the
length of the hypotenuse.
The result lies in the range -1 to 1.
To convert degrees to radians, multiply degrees by
π
/180. To convert radians
to degrees, multiply radians by 180/
π
.
Returns the sine of the value in parentheses. The input must be in radians.
Sin Function Example
The example uses Sin to calculate the sine of an angle from a Volt input.
Dim Degrees, Pi, Radians, Ans 'Declare variables.
Pi = 4 * Atn(1) 'Calculate Pi.
Degrees = Volt(1) 'Get input.
Radians = Degrees * (Pi / 180) 'Convert to radians.
Ans = Sin(Radians) ‘The Sine of Degrees.
SinH (Source)
The SINH function returns the hyperbolic sine of an expression or value.
Syntax
x = SINH( Expr )
Remarks
The SINH function returns the hyperbolic sine [ SINH(x) = 0.5( ex - e-x ) ] for
the value contained in the Expr argument.
The example uses SINH to calculate the hyperbolic sine of a voltage input.
Public Volt1, Ans 'Declare variables.
BeginProg
Scan ( 1, min, 3, 0)
VoltDiff(Volt1,1,mV5000,1,True,100,500,1,0)
'Returns voltage on Channel(1) to Volt(1)
Ans = SINH( Volt1 ) 'The Hyperbolic Sine of Volt1.
NextScan
EndProg
Sqr (Source)
Returns the square root of a number.
Syntax
x = Sqr (number)
Remarks
The argument number can be any valid numeric expression that results in a
value greater than or equal to 0.
Returns the square root of the value in parentheses.