Displaying Measurement Result In Deviation From Reference Value; Measurement Mode) - Keysight E4981A User Manual

Setting up Measurement Conditions and Display
Setting Up Display
Setup procedure
Selecting floating/fixed point display
Step 1. Press [Display Format].
Step 2. Use the cursor keys to select the field in which a measurement result of
primary parameter or secondary parameter is displayed.
Step 3. Use the following softkeys:
Softkey
D.P. AUTO
D.P. FIX
D.P. POS INCR+
D.P. POS DECL-
Displaying measurement result in deviation from reference value (deviation

measurement mode)

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:
•
Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
Description
Automatically sets the decimal point
Fixes the decimal point position
Increments the position of decimal point
Decrements the position of decimal point
ABS (absolute value) deviation measurement
Δ
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:
ABS = X-Y
Δ
X actual measurement of the DUT
Y
stored reference value
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