Chroma 3302 - Bias Current Source Connecting; Test Application; Large Inductance Measurement; Low Coupling Coefficient Turn Ratio Measurement

Panel Description
4-47
4.6 Bias Current Source Connecting
It can be connected with 1320, and control the current volume and ON ∕ OFF, connection
please refer to 1320 manual of 5.3.3.
4.7 Test Application
4.7.1 Large Inductance Measurement
When measuring large L, after test DCR, transformer will remain some energy need to be
clear, otherwise it will affect to next (Lx) test value, Therefore it needs to set delay time,
operation please refer to page 4-9 〝 DELAY TIME 〞 function.
4.7.2 Low Coupling Coefficient Turn Ratio Measurement
As Coil relative permeability ( μ r) value less than 100, there is a leaking magnet phenomenon
in secondary, it will cause turns ratio difference. Please refer to page 4-10 〝 SPECIAL TR 〞
function.
4.7.3 Bias Current Connecting
When it uses with 1320 if DUT is a large inductance, it will need to do zeroing, please refer
to page 4-10 〝 LINK 1320 〞 function.
4.7.4 Nonlinear Inductor, Transformer Measurement
When measuring nonlinear inductor, transformer, often get different value that cause by
different output impedance, therefore it has 4 output impedance modes for selecting, which
320X output impedance mode is 100 Ω (same as HP4284A), 106X mode is 50 Ω∕ 10 Ω
(same as WK3245), 107X is 25 Ω (same as GR1689).