Quick Start 2
Keysight E3633A and E3634A Service Guide 41
To Program Overvoltage Protection
Overvoltage protection guards the load against output voltages that reach a
specified value greater than the programmed protection level. It is accomplished
by shorting the output via an internal SCR when the trip level is set to equal or
greater than 3 volts, or by programming the output to 1 volt when the trip level is
set to less than 3 volts.
The following steps show how to set the OVP trip level, how to check OVP
operation, and how to clear overvoltage condition.
Setting the OVP level and enable the OVP circuit
1Turn on the power supply.
The power supply will go into the power-on / reset state; the output is disabled
(the OFF annunciator turns on); the 8V/20A
[1]
or 25V/7A
[2]
range is selected
(the 8V
[1]
or 25V
[2]
annunciator turns on); and the knob is selected for voltage
control.
2 Enable the output.
The OFF annunciator turns off and the display will go to the meter mode.
3 Enter the OVP menu and set the trip level.
You will see the above message on the display when you enter the OVP menu.
Adjust the control knob for the desired OVP trip level.
Note that you cannot set the trip levels to lower than 1.0 volt.
[1] For Keysight E3633A Model
[2] For Keysight E3634A Model
LEVEL 22.0V (E3633A)
LEVEL 55.0V (E3634A)
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