Ossila FACT1 User Manual page 64

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enabling

innovative electronics

Eq. 22

where

and N is the number of data points (number of steps) with

Eq. 23

Example: Let us suppose that the User wants to acquire a data point for each steps ΔV

= 1 over the

interval V

Start =0 V to V

Start = -10 V, the equation above gives then N = 11, which fulfils the

User's request since the acquisition is carried out from 0 to 10 V over 11 voltages separated by 1 V

step.

Current Limit specifies the maximum drain current (I

) that the DRAIN source is allowed to induce in

the DUT as the User's selected gate voltages are applied to the DUT itself, i.e. Current Limit refers to

maximum allowed I

) for any applied V

Delay DRAIN Delay is the dwell time between the application of a specific drain voltage and the

acquisition of the respective drain and gate current data points. Delay must be greater than the total

settling time, which is given by the sum of the system settling time and the DUM transient for drain

voltage sweeps, see GATE Delay above.

Sweep Back is selected to 'sweep back' each I-V curves: for any V

, SuperFACT sweeps the drain

current from Drain Voltage Start to Drain Voltage End and hence backward from Drain Voltage End

back to Drain Voltage Start.

Acquisition settings: Transfer characteristics (IV), Gate

This section serves as GATE SMU for TC sweeps

SMU Name is the alias name of the SMU unit as specified in MAX (Measurement & Automation

Explorer).

For Keithley series 26XX dual channel series, the SMU alias name must be KeithleyO, while for NI PXI

4132, the name is SMUA.

Channel is the SMU channel used for output/input operation. Input a for Keithley 26XX dual channel

series and 0 for NI PXI 4132.

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