STX Signal Transmitter Installation and Operation ... - Kistler-Morse

Chapter 9. MVS-STX Math Channels
Math Channel
Functions
Menu Functions
C Identifies a specific channel in the
equation. C must be immediately
followed by a channel number (for
example, C9 indicates the channel with
factory-set ID# 9). All equations must
start with the current channel designation
and an equal sign (for example,
C9= must be the start of the equation
when you are in channel 9). When a
channel number appears to the right of
the equal sign, it tells the MVS to put
the value from that channel (the weight
from a vessel monitoring channel or the
calculated value from a math channel)
in the equation.
+ Addition function. Adds the value to the
right of the sign to the value to the left of
the sign.
* Multiplication function. Multiplies the
value to the right of the sign by the value
to the left of the sign.
- Subtraction function. Subtracts the
value to the right of the sign from the
value to the left of the sign.
÷ Division function. Divides the value to
the left of the sign by the value to the
right of the sign.
= Equals function. Places the value from
the entire equation to the right of the
sign in the channel designated to the left
of the sign. All equations must start with
the current channel designation and an
equal sign (for example, C9= must be
the start of the equation when you are in
channel 9).
( Left parenthesis function. Used with
right parenthesis to group math
functions together.
) Right parenthesis function. Used
with left parenthesis to group math
functions together.
CLR Clear function. Clears the entire displayed
formula from memory.
Square root function. Takes the square
root of the value to the right of the sign.
ln
e^
Natural log function. Takes the
natural log of the value to the right of
the function.
Inverse natural log. Takes the inverse
natural log of the value to the right of
the function.
Keyboard Functions
Up Arrow
Scrolls to the left through the
equation (MVS can only display
16 characters in the equation at
a time, and the scroll function
allows you to view equations
that have more than
16 characters).
Down Arrow Scrolls to the right through
the equation.
Enter
Deletes the character to the left
of the cursor.
Stores the current formula
in memory.
Equation Limitations
Following are the limitations on the equations
put into the math channels:
• A single equation can be up to 40
characters in length. A character is a
number, a decimal point, or a function
from the Math Menu. The example
equation below contains 9 characters:
C9=C1+10.
• A single equation can contain a maximum
of 3 constants (a constant is a
numerical value, such as 1000).
• A constant can have a maximum of
11 characters.
• Equations cannot contain any spaces
between characters. The example
below shows an incorrect and a
correct equation:
Incorrect (contains spaces)
C9 = C3 + C4 + C6
Correct (no spaces)
C9=C3+C4+C6
9-2