Keysight U3606B Mode D'emploi page 79

– All math operations can be toggled off by pressing [Shift] > [Exit].
NOTE
– All math operations are automatically turned-off when changing measuring
– Range changing is allowed for all math operations except for the Hold
– For remote operation, refer to the CALCulate subsystem in the U3606B
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 2-wire resistance
measurement by nulling the test lead resistance. Nulling the leads is also
particularly important prior to making capacitance measurements. The formula
used for calculating null measurements is:
The null value is adjustable. You can set it to any value between 0 and ±120% of
the highest range, for the present function.
– Null can be set for both auto and manual range settings, but not in the case
NOTE
– In resistance measurement, the U3606B will read a non-zero value even
– In DC voltage measurement mode, the thermal effect will influence the
Keysight U3606B User's Guide
functions.
function.
Programmer's Reference.
Result
of an overload.
when the two test leads are in direct contact because of the resistance of
these leads. Use the null function to zero-adjust the display.
accuracy. Short the test leads and press [Null] once the displayed value is
stable to zero-adjust the display.
= reading null value
–
Operation and Features 2
79