Deviation Measurement - Keysight E4980A User Manual

Configuring Measurement Conditions (Display and Function Related Settings)
MEAS SETUP page

Deviation Measurement

Functional Description
The deviation measurement feature allows you to display deviation values
instead of actual measurements. A deviation is expressed as the difference
between the actual measurement and the stored reference value. The deviation
measurement feature is useful when you observe how a particular value of a
device/component changes under varying conditions of temperature,
frequency, bias, and other influences.
You can apply the deviation measurement feature to the primary or secondary
parameter or both. The deviation measurement feature supports the following
two modes:
•
ABS
X
Y
•
%
X
Y
To set up the deviation measurement feature:
Step 1. Press [Meas Setup].
Step 2. Using the cursor keys, select the REF A field.
110
ABS (absolute value) deviation measurement
Identifies and displays the difference between the actual measurement of
the DUT and the stored reference value. This value is calculated based on
the following formula:
= X-Y
actual measurement of the DUT
stored reference value
% (percentage) deviation measurement
Identifies the difference between the actual measurement of the DUT and
the stored reference value and displays it as a percentage of the reference
value. This percentage deviation value is calculated based on the following
formula:
= (X-Y)/Y100 (%)
actual measurement of the DUT
stored reference value
Keysight E4980A/AL Precision LCR Meter