DL7, DL7L
86
14
ADDITIONAL FUNCTIONS
14.1 Additional channel functions
14.1.1 Math channels
In order to set the calculation channel, choose from the menu bar the
button and
then the channels icon
. In the Input tab, set the channel type:
Computed
and enter
the formula which the value will be calculated.
The device allows to perform selected mathematical operations: addition, subtraction,
division, multiplication, raising to the 2, 3 or any power and the square root. The entered
formula can contain up to 200 characters.
The value of another channel may be used in calculation. In this case, the channel
number should be preceded by
#
sign.
For example:
formula
#1+#2
adds the values of the first and second channels.
In calculation of square root, the value is calculated of only first character after the
√
mark. If the square root has to be calculated from the value of several channels, calculated
value should be placed in brackets.
For example:
formula
√
123
calculates the square root of 123,
formula
√
#1
calculates the square root of the value of channel 1,
formula
√
#1+#2
calculates the square root of channel 1 and to the
result adds the value of channel 2,
formula
√
(#1+#2)
calculates the square root of the sum of values
channels 1 and 2.
Similarly, in the case of exponentiation (the possibility of choosing the second and the
third power), the value is calculated of only the first character entered before the
2
or
3
mark.
If the value from several channels is raised to power 2 or 3, the calculated value should be
put in brackets.
For example:
formula
123
2
raises 123 to the power of 2,
formula
#1
2
raises the value of channel 1 to the power of 2,
formula
#1+#2
2
raises the value of channel 2 to the power of 2 and
to the result adds the value of channel 1,
formula
(#1+#2)
2
raises to the power of 2 the value from the sum of
values of channels 1 and 2.
The device can raise the value to any power (the ^ mark). For an exponent that is not
an integer, the base must be positive. If the value from several channels has to be raised to
selected power, the value should be put in brackets. If the exponent contains more than one
sign, place it in brackets.
!
The device performs calculations according to the order of operations
(operations in brackets, exponentiation / extraction of a root, division /
multiplication, addition / subtraction).
