Keysight E3631A, Service Manual

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2 Quick Start
40 Keysight E3631A Service Guide
To use the power supply in constant current mode
To set up the power supply for constant current (CC) operation, proceed as
follows.
1 Connect a load to the output terminals of the desired supply.
With power-off, connect a load to the desired output terminals.
2 Turn on the power supply .
The power supply will go into the power-on / reset state; all outputs are
disabled (the OFF annunciator turns on); the display is selected for the +6V
supply (the +6V annunciator turns on); and the knob is selected for voltage
control.
3 Enable the outputs
The OFF annunciator turns off and the +6V and CV annunciators are lit. The
blinking digit can be adjusted by turning the knob. Notice that the display is in
the meter mode. "Meter mode" means that the display shows the actual
output voltage and current.
To set up the power supply for +25V supply or –25V supply operation, you
should press the “+25V” or “–25V” key to select the display and adjust for +25V
supply or –25V supply before proceeding to the next step.
4 Set the display for the limit mode.
Notice that the Lmt annunciator blinks, indicating that the display is in the
limit mode. When the display is in the limit mode, you can see the voltage and
current limit values of the selected supply.
NOTE
In constant current mode, the current values between meter mode and limit
mode are the same, but the voltage values are not. Further if the display is in the
meter mode, you cannot see the change of voltage limit value when adjusting
the knob. We recommend that you should set the display to "limit" mode to see
the change of voltage limit value in constant current mode whenever adjusting
the knob.