B&K Precision 1688B - Manual - Manual (Page 33)

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6 Faults and Troubleshooting
6.1 OVP: Overvoltage Protection
This unit has a built-in tracking overvoltage protection feature. In the event of the
output voltage becoming greater than the set value (see specified range from
Specifications section), protection will be triggered, and the output power will be
cut off. OVP warning will appear as shown below.
Figure 13 - Overvoltage Protection
To reset the warning, switch off the unit and remove all connected devices. Switch
the unit back on again and it should resume normal operation. If the problem
persists, please contact B&K Precision.
6.2 OTP: Overtemperature Protection
There is a thermo sensor inside the unit to monitor and prevent the unit from getting
too hot. When OTP is triggered, there is no output and the following warning will
appear on the LED display.