3
Making Measurements
72
Keysight U1401B User’s and Service Guide
Relative (zero)
The relative function subtracts a stored value from the present measured value
and displays the difference.
1
Press
to store the currently displayed reading as the reference value to
be subtracted from subsequent measurements. The
annunciator will be
displayed.
2
The relative mode can be activated in both auto and manual ranges, but it
cannot be set if the present reading is overload (
OL
).
3
Press
to exit the relative mode.
There are two possible applications:
– For a resistance measurement, the display will read a non-zero value even
when no measurement is being taken, due to the resistance of the test leads.
You can use the relative function to zero-adjust the reading.
– For a DC voltage measurement, the thermal effect will influence the accuracy.
Use the relative function to offset the thermal effect. Short the test leads and
press
when the displayed value has settled down to a stable state.
Figure 3-8
Relative (zero) mode
Press
Содержание U1401B
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Страница 107: ...Application Examples 5 Keysight U1401B User s and Service Guide 107 Figure 5 5 Zener diode test ...
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