Programmable AC Source 6460/6463/6490 User’s Manual
power supply is lower than specification.
It is over temperature protection, and will be enabled when the
internal temperature of the AC source is too high.
It is feedback open protection.
It is over current protection, and means that the output stage is over
the current limit user programs.
It is over power protection, and means that the output stage is over
the power specification which is checked by software.
It is negative power protection, and means that the output stage has
negative power.
The protection happens when there is a large difference between
the set voltage and the measured one.
If any output protection mentioned above is triggered to hold normal output, please remove
the errors, then, press
ENTER, and hold the key for two seconds to unlock the output
protection so as to resume the normal operation.