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3 Using the Source/Load Functions
Power Limit - For the majority of power analyzer configurations, full power is available from all
installed power modules. However, it is possible to configure a mainframe in which the combined
power module ratings exceed the 600 W power rating of the mainframe. The power limit field lets you
reduce the power that can be sourced from an individual output, thereby preventing the combined
power from exceeding the mainframe's power rating. To set a lower power limit, select the Power Limit
Field and enter the power limit value in Watts. Refer to
Power Limit Operation
for more information.
Turn-on Pref - The turn-on preference function only applies to Keysight Models N6761A and N6762A.
This specifies the preferred mode for output on/off transitions. It allows output state transitions to be
optimized for either constant voltage or constant current operation. In the Turn-on Pref drop-down
list, select either Voltage or Current. Selecting Voltage minimizes output on/off voltage overshoots in
constant voltage operation. Selecting Current minimizes output on/off current overshoots in constant
current operation.
Reverse Polarity – This control only applies if the power module has Option 760 installed. Check
Reverse Polarity to reverse the polarity of the output and sense terminals. Uncheck to return the relay
polarity to normal. The output is briefly turned off while the output and sense polarities are switched.
Refer to
Model Differences
for Option 760 availability and current limitations. When the output and
sense polarities are reversed, the following symbol appears on the front panel display:
From the remote interface:
To set only output 1 to 10.02 V and 1 A:
VOLT 10.02,(@1)
CURR 1,(@1)
To select a lower voltage or current range on output 1, program a value that falls within the range:
VOLT:RANG 5,(@1)
CURR:RANG 1,(@1)
To set the power limit of outputs 1 and 2 to 50 W, and outputs 3 and 4 to their maximum settings:
POW:LIM 50,(@1,2)
POW:LIM MAX,(@3,4)
To set the Keysight N6761A turn-on preferred mode to constant current:
OUTP:PMOD CURR,(@1)
To reverse the relay polarity on units with Option 760:
OUTP:REL:POL REV,(@1)
To return the relay polarity to normal:
OUTP:REL:POL NORM,(@1)
Keysight N6705C User's Guide
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