ODA EX 100-12, Руководство пользователя, Страница: 30 / 94

If the real output voltage is higher than OVP level value, "OVP TRIPPED" message appears on the display.
And output voltage and current is dropped to near zero.
In order to output the voltage and current, at first remove the DUT from load wire and clear
the tripped OVP as like below method. The reason of tripped OVP occuring.
First, OVP setting level is lower than rear output voltage level. Therefore, increase the OVP level.
Second, Maybe the DUT is like a coil, motor and as like a source that make an in rush current.
To avoid this, a UF-diode must be connected in series with the output as shown below.
Third, In case of using the DUT as like source. If external voltage source such as a battery is connected
across the output, feedback voltage level is higher than OVP level and it occurs tripped OVP.
A diode must be connected in series with the output as shown below.
Forth, If you can't control the tripped OVP, turn off the OVP function.
Enter the "Factory mode" and move to "5.OVP USE" and then disable this function.
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< Figure 3-2 >