Null (Relative) - Agilent Technologies U1251A User Manual

NULL (Relative)

N O T E
N O T E
Agilent U1251A/U1252A User's and Service Guide
The NULL function subtracts a stored value from the present
measurement and displays the difference between the two.
1 Press to store the displayed reading as the
reference value to be subtracted from subsequent
measurements and to set the display to zero. NULL is
displayed.
Null can be set for both auto and manual range settings, but not in the
event of an overload.
2 Press to see the stored reference value. NULL
flashes for 3 seconds before the display returns to zero.
3 To exit this mode, press
the display.
• When taking a resistance measurement and the meter reads a
non-zero value due to the presence of test leads, use the Null function
to adjust the display to zero.
• When taking a DC voltage measurement, the thermal effect will
influence the accuracy. Short the test leads and press NULL once the
displayed value is stable in order to zero out the display.
Features and Functions
while NULL is flashing on
3
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