Appendix E Source Operating Modes
124 Keysight N6700 User’s Guide
The heavy solid line illustrates the locus of possible operating points as a
function of the output load. As shown by the vertical portion of the line,
the output current remains regulated at its programmed setting as long
as the output voltage remains within the positive or negative voltage
limit setting. A CC (constant current) status flag indicates when the
output voltage is within the limit settings.
If the output voltage reaches either the positive or negative voltage limit,
the unit no longer operates in constant current mode and the output
current is no longer held constant. Instead, the power supply will now
regulate the output voltage at its voltage limit setting. Either a LIM+
(positive voltage limit) or LIM− (negative voltage limit) status flag is set
to indicate that either the positive or negative voltage limit has been
reached.
As shown by the horizontal portions of the load line, when the unit is
sinking power, the output current may continue to increase in the
positive or negative direction as more current is forced into the unit.
Once the current is exceeds 112% of the rated current of the range, the
output will shut down, the output relays will open, and the OC and PROT
status bits will be set.
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