Instruction manual

164 Chapter 7
Executing Measurements and Displaying Results
Setting How the Instrument Displays Measurement Results
(Enabling/Disabling Deviation Measurement Mode)
Setting How the Instrument Displays Measurement Results
(Enabling/Disabling Deviation Measurement Mode)
You can have the instrument display measurement results as absolute values or as
deviations relative to the reference value (deviation measurement mode). You can change
this setting for each of the measurement parameters 1 through 4. In deviation mode, you
can set the instrument to display deviations as they are (
Deviation mode) or as percentages
relative to the reference value (
% Dev. mode). When the deviation measurement mode is
turned on, Δ
symbol is displayed at the left of the measurement parameter.
Figure 7-4 Deviation measurement mode
How the instrument displays measurement results differs according to the modes, as
summarized in the table below.
where and mean the following:
: Measured value
: Reference value ([Prmtr] - SETUP DEVIATION - PRMTR-1 [ ] - PRMTR-4 [ ] -
CENTER)
NOTE When you are testing DUTs while using the bin sorting function, the instrument always
displays measurement results as they are, regardless of the above settings. See Figure 6-5,
“4287A’s data processing flow” in the programming manual.
deviation measurement mode OFF Deviation % Dev.
How measurement results are displayed
Meas
Meas Ref–
Meas Ref–
Ref
----------------------------
100×
Meas
Ref
Meas
Ref