Keithley 6487 Reference Manual page 320

Picoammeter/voltage source
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G-14
Applications Guide
Up-range input response
Figure G-11
with a full-scale input signal (200μA signal on 200μA range, up-range to 2mA range).
Both the magnitude and duration of this voltage are reduced for lower current ranges. The
current limit imposed by the R
ity of the input current.
Figure G-11
Transient Voltage
When it is necessary to up-range during auto-ranging operation, multiple ranges may be
crossed to find the correct range. The duration of the transient in
extended in this case, but the magnitude will not increase significantly.
illustrates the type of transient voltage that can be expected when up-ranging
is also greatly reduced. The polarity depends on the polar-
F
Figure G-11
was measured with a positive input current.
Model 6487 Reference Manual
Figure G-11
can be

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