Rigol DM3000 Series User Manual

RIGOL
© 2007 RIGOL Technologies, Inc.
User‟s Guide for DM3000 Series
2-6
Null Measurement
The DM3000 null settings is available for DC voltage, AC voltage, DC current, AC
current, resistance, frequency/period, and capacitance measurements.
With null setting each measurement is the difference between a stored null value
and input signal. The null measurement enhance the accuracy by off set test lead
impedance. It is particularly important prior for making capacitance measurements.
The formula used for calculating null measurements is:
Result = reading - null value
The null value is adjustable, and can be set to any value between 0 and ±120% of
the highest range, for the present function.
Press  Null, the display shows:
Figure 2- 4
Table 2- 5 Null Measurement Menu Description
Function Menu
Description
Current
Use the measured value as the null value.
Clear
Set the value to be zero.
On/Off
Turn the Null function on or off.
Save all changes, back to a higher level menu.

Rigol DM3000 Series Specifications

General

Brand	Rigol
Model	DM3000 Series
Category	Multimeter
Language	English