7 - 16
INP-TN4PHAV-E
(5)
Logarithmic calculation
• Set the logarithmic calculation function of each channel.
ON: Valid OFF: Invalid
• Contents of logarithmic calculation function
(1) Indication and print format: 9.9E
±
9
Indication part: -9 to 9
Fixed-point part: First decimal place
Data range: 1.0 x 10
–9
to 1.0 x 10
9
(When simultaneous display of 6 channels is made by the display unit on the front face, display is
made like 1.0
–9
if the characteristic is negative.
(2) Method for setup of engineering value and recording range
Setup of engineering value
Make setup by the characteristic only.
Setup of recording range and of boundary
value (at the time of zoom recording)
Make setup by the characteristic only.
Typical setup
When measuring range 1-5V, engineering value 0-9 are set, input of 1-5V is converted to 10
0
~10
9
.
At this time;
Indicated value
Input 10 (0%)
1.0 E 0
Input 30 (50%)
1.0 E 4
Input 50 (100%)
1.0 E 8
Typical scale print: (Only the points of 10
n
are printed.)
(3) Differential calculation and integration cannot be executed when logarithmic calculation is set.
Furthermore, average values are not printed in the daily report list.
(5)
Subtraction
• This is a specification for recording the result of calculation of the difference between 2 channels.
Example: The result of Ch1 to Ch3 is recorded in Ch1.
• Subtract calculations are only possible between channels for which the units and decimal point posi-
tion are the same. (If they are different, results cannot be guaranteed.)
• If Ch0 is specified, no subtract calculation is performed.
• No subtract calculation is performed if there is a skip specification for a channel it is wished to use in
the calculation
Ch1 Engineering value
0 ~9
Ch1 Recording range V
0 ~9
10
0
10
2
10
4
10
6
10
8
(10
0
~10
9
is meant.)
(10
0
~10
9
is meant.)
