Keithley S530 User Manual page 77

S530 Parametric Test System Test Subroutine Library User's Manual
Details
Drain voltage is forced and a binary search is done on V
(vglo and vghi). The binary search is controlled by two parameters: The error estimate (errpct)
and the maximum number of iterations (maxitr). Error codes are returned based on the results of
the search.
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.
V/I polarities
The polarities of V
Source-measure units (SMUs)

SMU1: Forces vds, default current limit, measures I

SMU2: Searches V

SMU3: Forces vbs, default current limit
Example
result = vg2(d, g, s, sub, type, idspec, errpct, vds, vbs, vglo, vghi, maxitr,
&idmeas, &istat)
Schematic
S530-907-01 Rev. A / September 2015
is less than 0.9 mV, the substrate is grounded. In all other cases, it is
BS
, V , and V are determined by device type.
GS DS BS
, current limit set to (1.25 * idspec)
GS
Section 3: Test subroutine library reference
, starting with the two input values of V
GS
DS
GS
3-65