Tonghui TH2840 Series - Operation Example for Testing Inductance; Test Condition; Operation Steps

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this way, the magnetic fields produced by these currents can be mutually offset and further eliminate
the influence of mutual inductance coupling on test results.
5.4 Operation example for testing inductance
5.4.1 Test Condition
Function: Ls-Q
Frequency: 5.5kHz
Level: 1.5Vrms
Internal impedance: 100Ω
5.4.2 Operation steps
Turn on the instrument.
Set basic parameters.
Press [Display] to enter into the <Meas Display> page.
Move the cursor to the Parameter area, the optional parameters are in the soft key area on the right
side of the screen.
Press Ls to select Ls test function.
Move the cursor to FREQ, the current frequency is 1.0000kHz. The frequency can be modified as
needed.
Move the cursor to LEVEL, the current displayed level will be 1.000V.
Press [SETUP] to enter into the <MEAS SETUP> page.
Move the cursor to R
sou
zone, 100Ω and 30Ω will be displayed in the soft key zone.
Press 100Ω to select 100Ω as the signal internal impedance.
Connect the test fixture (TH26005) to the test terminals.
Execute correction (To avoid the influence of stray impedance on measurement accuracy, Open/
Short correction must be operated) (refer to 5.1.2 “Point-frequency correction”)
Mount the tested inductance to the test fixture.
Execute test operation.
Press [DISP] to enter into the < Meas Display > page. The instrument will continuously test and put
the test result in the center of the page.