Section 3: Functions and features
Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
3-8
DMM7510-901-01 Rev. B / May 2015
Percent
The percent math function displays measurements as percent deviation from a specified reference
constant. The percent calculation is:
Where:
Percent
= The result
Input
= The measurement (if relative offset is being used, this is the relative offset value)
Reference
= The user-specified constant
The result of the percent calculation is positive when the input is more than the reference. The result
is negative when the input is less than the reference.
When the percent operation is active, the unit of measure for the front-panel readings is
%
and the
MATH indicator is displayed to the right of the measurement. You cannot change the unit designator.
Reciprocal (1/X)
You can set math operation to reciprocal to display the reciprocal of a reading.
The reciprocal is 1/X, where X is the reading. If relative offset is on, the 1/X calculation uses the input
signal with the relative offset applied.
Example:
Assume the normal displayed reading is 002.5000
Ω
. The reciprocal of resistance is conductance.
When the reciprocal math function is enabled, the following conductance reading is displayed:
0.400000
When the reciprocal math operation is active, the unit of measure for the front-panel readings is 1/x
and the MATH indicator is displayed to the right of the measurement. You cannot change this units
designator.
