Keysight U1273A Manual De Instrucciones página 106

3 Multimeter Features
Making Relative Measurements (Null)
When making null measurements, also called relative, each reading is the
difference between a stored (selected or measured) null value and the input
signal.
One possible application is to increase the accuracy of a resistance measurement
by nulling the test lead resistance. Nulling the leads is also particularly important
prior to making capacitance measurements.
Null can be set for both auto and manual range settings, but not in the case of
NOTE
an overload.
1 To activate the relative mode, press the
Figure 3-1
2 Press
3 To disable the Null function, press
For any measurement function, you can directly measure and store the null value
by pressing
shorted (nulls the test lead resistance), or across a desired null value circuit.
106
the time that when Null (
Null display
again to view the stored reference value (
return to normal after 3 seconds.
shown (step 2).
with the test leads open (nulls the test lead capacitance),
key. The measurement value at
) is enabled, is stored as the reference value.
while the stored reference value is
Keysight U1273A/U1273AX User's Guide
). The display will