Ossila FACT1 User Manual page 53

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point (PXI SMU) or for any 'discarded measurement', see below, (Keithley SMU).
Important: For Keithley 26XX series, TC: Initial Delay Time takes effect only if TC: # Discarded
Measurement is different from zero.
Tip: A longer (initial) settling time is usually required to counteract the spurious current generated
by stray capacitive components in the measurement equipment (SMU, cable and multiplexer).
Apply V Init. Delay
DS,0
Figure 21. Schematic of TC acquisition with initial settling time.
TC: # Discarded Measurement specifies the number of initial measurements I
before the actual acquisition is commenced. This functionality improves measurement accuracy by
allowing the discharge of the stray capacitors of the measurement equipment. For NI PXI, It can be
used in combination with, or in substitution of, TC: Initial Delay Time.
TC: # Discarded Measurement: Min allowed value 0; Max allowed value 10.
IV: Initial Delay Time. The same as TC: Initial Delay Time, but with the extra settling time applied to
the DRAIN SMU during the IV sweeps.
IV: # Discarded Measurement. The same as TC: # Discarded Measurement, but it applies to the
output characteristic current I
Min allowed value 0; Max allowed value 10.
Application settings: Data analysis
Partition Method: R-squared sets the minimum R-squared (goodness of fit) the experimental data
fit is required to satisfy for the mobility to be returned without a warning flag.
Min allowed value 0.90; Max allowed value 1
Linear Fit: Min Sample sets the minimum number of data points required by the Linear Fit Method
algorithm to calculate the mobility.
Min allowed value 10; Max allowed value 50
Linear Fit: R-squared specifies the minimum R-squared (goodness of fit) the linear fit must satisfied
in order for the mobility to be returned without a warning flag.
Min allowed value 0.90; Max allowed value 1
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Delay Measure I
DS.0
and to the leakage gate current I
DS
Partition Method: Set Size specifies the minimum size
of the data point subsets the partition method
algorithm uses to calculate the mobility, see
Method.
Min allowed value 5; Max allowed value 10
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Apply V Delay
DS,1
to take and discard
DS,0
GS.
Measure I
DS.1
Partition
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