Extech Instruments 7470 Operation Manual page 20

Flashing high voltage
indicator
User selectable input voltage
Low-current sense
Electronic ramping (up &
down)
16
voltage even while High Withstand Voltage Tester
is in the dwell mode so you can analyze test
results at different voltages.
A flashing LED located directly over the high
voltage terminal clearly indicates when high
voltage is active to provide maximum operator
safety.
High Withstand Voltage Tester can be switched for
either 115 or 230 volt input operation through an
easy access rear panel mounted switch to allow it
to be used in any country.
Monitors the minimum level of current flow, thus
ensuring that the DUT is properly connected and
that the hipot test is being performed.
Provides a gradual and timed method to increase
or decrease output voltage to the DUT minimizing
any damage from quick high voltage changes to
sensitive DUTs.