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3 Using the Source/Load Functions
2-Quadrant Power Supply
This operating mode is restricted to two quadrants (+V/+I and +V/-I). The following figures show the 2-
quadrant settings.
Operating in – selects either Voltage Priority or Current Priority. This selection determines which
controls are displayed.
The other settings in 2-quadrant mode are the same as the settings in 4-quadrant mode except that
you cannot program negative voltages or negative voltage limits. Because of this, voltage tracking is
not available in Current Priority mode. Note that the negative voltage limit is fixed at –10 mV. Refer to
N678xA Multi-Quadrant Operation
for a detailed description of voltage and current priority.
Resistance - This is only available on Keysight Models N6781A and N6785A. Output resistance
programming is primarily used in battery emulation applications, and only applies in Voltage Priority
mode. Values are programmed in Ohms, from –40 mΩ to +1 Ω.
1-Quadrant Power Supply (unipolar)
This mode emulates a typical one quadrant or unipolar power supply with limited down-programming.
The following figures show the 1-quadrant settings.
Operating in – selects either Voltage Priority or Current Priority. This selection determines which
controls are displayed.
In 1-quadrant mode you cannot program negative voltages, negative currents, negative voltage
limits, or negative current limits. Because of this, voltage tracking and current tracking are not
available. Note that there is limited 2-quadrant operation with the negative current limit being fixed at
10% to 20% of the output current rating.
Keysight N6705C User's Guide
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