Keysight EL30000 Serie Guide D'utilisation page 29

CV mode
In this mode, the load unit will attempt to sink enough current to maintain the input voltage at its programmed
value.
The heavy solid line illustrates the locus of possible operating points as a function of the load voltage. Note that in CV
mode, a current limit can be imposed. As shown by the horizontal portion of the line, the input voltage remains
regulated at its programmed setting as long as the input current remains within the current limit setting. A CV
(constant voltage) status flag indicates that the input current is within the limit settings.
When the input current reaches the current limit, the unit is no longer in constant voltage operation and the input
voltage is no longer held constant. Instead, the load unit will now regulate the input current at its current limit
setting. A CL (current limit) status flag is set to indicate that a current limit has been reached. If the input voltage
increases until it exceeds 110% of the rated input voltage, the overvoltage protection will trip and the load's input
will turn off
Voltage may be programmed in one of two overlapping ranges, a Low and a High range. The low range provides
better programming and measurement resolution at low voltage settings.
CP mode
In this mode, the load unit will regulate the power being drawn from the DUT according to the programmed
constant-power value.
Keysight EL30000 Series User's Guide 29