Source Operating Modes Appendix E
Keysight N6700 User’s Guide 121
Autoranging
Autoranging only applies to Keysight N675xA and N676xA power
modules.
The following figure illustrates the autoranging output characteristic of
the Keysight N675xA and N676xA power modules. Point 3 shows a
situation in which the voltage and current settings are such that the
operating locus is limited by the maximum output power boundary of the
output. Depending on the power module, this may be greater than the
output power rating of the module. In this situation, the output is not
guaranteed to meet its operating specifications because it is operating in
an area that is outside its specified power rating.
As shown by the dashed line on the left in the figures, the power system
is capable of sinking current over the output voltage range from zero
volts to the rated voltage. This negative current sinking capability
provides fast downprogramming of the output. The negative current is
not programmable.
Voltage
Current
Iset
Vset
C
C
r
e
s
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s
t
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v
e
l
o
a
d
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e
C
V
r
e
si
s
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v
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o
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0
1
2
3
Less load resistance
More load
resistance
Vmax
Imax
Downprogrammer
characteristic
+
C
P
l
o
a
d
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e
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