Hioki ST4030, Instruction Manual

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Terminal Open Error Setting
8.12 Terminal Open Error Setting
This section describes how to enable and disable the display of terminal open errors.
When the setting is enabled, the instrument will conclude that the terminals are open and display
an open error if the voltage value fails to fall after the response waveform’s maximum value is
acquired.
(Measurement screen) [SYSTEM] > [SYSTEM]
1
1
Tap [OPEN ERROR] and set whether to enable or disable display of open errors.
OFF Disables open errors.
• No open error will result if the measurement terminals are not connected, if an insulator is
measured, if the recording length is short, etc.
• The instrument will check for discharge of any residual charge caused by the capacitance of
the object under test before applying each pulse when measuring an insulator. Consequently,
measurement time may increase.
• Since the instrument will not perform a contact check based on detection of open errors, it
will be necessary to exercise caution as measurement will proceed even if the measurement
terminals have not been connected.
ON
Enables open errors.
• The instrument will conclude that an open error has occurred if the waveform’s voltage value
fails to fall to 25% or less of the maximum voltage after recording the waveform’s maximum
positive voltage.