User`s guide

3 Using the Source Functions
64 Model N6705 User’s Guide
Depending on the priority mode, you can specify either the output
Voltage or output Current setting. The Range function lets you select
the appropriate output range. You can also specify a Voltage Limit or
Current Limit, which limits the selected parameter at the specified
value. In voltage priority mode, the output voltage remains at its
programmed setting as long as the load current is within the positive
or negative limit. In current priority mode, the output current
remains at its programmed setting as long as the output voltage is
within the positive or negative limit.
Tracking Limits lets the negative voltage or current limit track the
positive voltage or current limit setting. By default, the negative limit
will track the positive limit value. Un-check this box if you want to
program asymmetrical positive and negative limits. If asymmetrical
limits are programmed and tracking is turned on, the negative value
is changed to track the positive limit.
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. 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.
Resistance - This is only available on Agilent Model N6781A. 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. The Voltage Priority and Current Priority
selections determine 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.