TOS93 Series User’s Manual 65
Withstanding Voltage and Insulation Resistance Tests | Setting Test Conditions
Current detection response speed (Filter)
This can be set only for AC withstanding voltage (ACW) and DC withstanding voltage (DCW) tests.
Set the response speed (sensitivity) for detecting the current when making upper limit judgments. An icon
appears during testing according to the setting.
1
On the Home menu screen, press Meas repeatedly until Meas is selected.
Each time you press the key, the setting changes between Meas and Scale.
2
Press Filter to switch between LPF and HPF.
Each time you press the key, the setting changes between LPF and HPF.
3
Turn the rotary knob to change the value.
This completes the setting.
Value Description Icon
LPF Slow Mean-value response type current detector. This is equivalent to the cur-
rent detection response of Kikusui’s general-purpose AC withstanding volt-
age testers. This setting is suitable for detecting dielectric breakdown
defined in safety standards. It is used for performing withstanding voltage
tests on general electronic devices and electronic components. This set-
ting makes it difficult to detect corona discharge and the like, which are not
considered to be dielectric breakdown in typical safety standards.
Medium With a mean-value response type current detector closer to peak detec-
tion, the response is faster than the Slow setting. Because the upper limit
judgment detection speed is fast, this setting is suitable for performing
withstanding voltage tests on compact electronic components and other
EUTs prone to dielectric breakdown. But, because current may be
detected for corona discharges and other instantaneous discharges and
discharges with high frequency components, this setting may not be suit-
able for reproducible withstanding voltage tests.
Fast
HPF Slow Extremely small discharges such as corona discharges will be detected
but reproducibility will be low.
Fast
Example: Home menu screen of ACW
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