Hioki ST4030, Instruction Manual

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Waveform Differences (Typical Values) Between Instruments
15.8 Waveform Differences (Typical Values) Between
Instruments
Even a slight difference in the interior of the impulse winding tester produces a difference in the
oscillation waveform even if using the same workpiece and test leads.
Instrument differences for the voltage peak value and cycle (zero-cross value) obtained with 14
Model ST4030 instruments when using the same workpiece and test leads are described as
reference values.
Test conditions
Workpiece 10 µH coil 1 mH coil
Sampling frequency 200 MHz 200 MHz
Sampling data count 1001 points 5001 points
Applied voltage 1000 V
Voltage calibration Implemented
Test lead L2250
Voltage [V]
First peak voltage
Second peak voltage
Third peak voltage
Time [µs]
First wave
half-period
Second
wave period
Describes the instrument differences determined using the waveforms obtained using each Model
ST4030.
Formula: (Max. value − min. value) / average value [%]
Workpiece 10 µH coil 1 mH coil
First peak voltage 0.90% 0.06%
Second peak voltage 1.80% 0.45%
Third peak voltage 4.46% 0.50%
First wave half-period 0.87% 0.29%
Second wave period 1.09% 0.37%