Keithley S530 User Manual page 45

S530 Parametric Test System Test Subroutine Library User's Manual
Details
This subroutine calculates the drain conductance (g
voltage (V
The drain conductance is calculated by:
g = I / V
D DS
If a zero or negative substrate pin is specified, the substrate is left floating. If the pin number is
greater than 0 and V
connected and forced.
Source-measure units (SMUs)

SMU1: Forces vds, default current limit, measures ids

SMU2: Forces vgs, default current limit

SMU3: Forces vbs, default current limit
Example
result = gd(d, g, s, sub, vds, vgs, vbs, &ids)
Schematic
S530-907-01 Rev. A / September 2015
), and substrate bias voltage (V
GS
DS
is less than 0.9 mV, the substrate is grounded. In all other cases, it is
BS
Section 3: Test subroutine library reference
) at drain-source voltage (V
D
) for a MOSFET.
BS
), gate-source
DS
3-33