Clear - UNI-T UTR2810E Series User Manual

Between the above impedance, use an appropriate equivalent circuit as recommended by the component
manufacturer.
（2）The choice of inductance equivalent circuit
Large inductance corresponds to high impedance value, and the influence of parallel resistance is greater
than series resistance. Therefore, the parallel equivalent method is more suitable for measurement.
On the contrary, small inductance corresponds to low impedance value, the influence of the series resistance
to inductance is more important. Therefore, the series equivalent method is more suitable for measurement.
Generally speaking, inductance equivalent circuits can select by the rule
When the choice is greater than 10kΩ, select parallel mode
When the choice is less than 10kΩ, select series mode
Between the above impedance, use an appropriate equivalent circuit as recommended by the component
manufacturer.

3.2.8 Clear

UTR2810E/2811E open-circuit clearing function can eliminate the influence of stray capacitance and stray
admittance (G,B) in parallel with the measured component; The short circuit clearing function eliminates the influence
of residual impedance, such as lead resistance or lead inductance in series with the measured component.
Set【Clear】to ON, the test result is the data after zero clearing；Set it to off, the test result is the data before zero clearing.

Method of Zero Clearing
Open-circuit zero clearing
Step 1
Press【CLEAR】key to enter zero clearing interface；
Step 2
LCD displays information"keep fixture open"；
Step 3
Press【ENTER】key to execute open-circuit zero clearing. LCD displays information "open-circuit
clear is processing'；the instrument will automatically scans open - circuit zero clearing test for
each range;
Step 4
After that, LCD displays information "press ESC exit；press CLEAR continue"; press【CLEAR】to
continuing to zero clearing; This step is completed, which means open-circuit zero clearing is
Mode Description
SER Series equivalent circuit
PAR Parllel equivalent circuit
Function Key Function
OFF Turn off
ON Turn on
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UTR2810E Series LCR Meter – User Manual