Agilent Technologies 4155C, User Manual

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3-54 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 4
Programming Examples for Visual Basic Users
Stress Force
Sub stress_meas(vi As Long, ret As Long, m() As Long) ’1
Dim range As Double ’3
Dim base As Double
Dim stress As Double
Dim bias As Double
Dim icomp As Double
Dim vlout As Double
Dim ilcomp As Double
Dim hold As Double
Dim duration As Double
Dim period
As Double
Dim status As Long
Dim md(4) As Double
Dim st(4) As Long
range = 0
base = 0
stress = 2
bias = 0.1
icomp = 0.1
vlout = 0
ilcomp = 0.1
hold = 0
duration = 5
period =
0.01
ret = hp4156b_setFilter(vi, hp4156b_CH_ALL, hp4156b_FLAG_ON) ’28
ret = hp4156b_setInteg(vi, hp4156b_INTEG_TBL_SHORT, 0.0001, 2)
ret = hp4156b_force(vi, m(2), hp4156b_VF_MODE, range, vlout, ilcomp, 0)
ret = hp4156b_force(vi, m(1), hp4156b_VF_MODE, range, bias, icomp, 0)
ret = hp4156b_force(vi, m(0), hp4156b_VF_MODE, range, bias, icomp, 0)
ret = hp4156b_spotMeas(vi, m(0), hp4156b_IM_MODE, range, md(0), st(0))
ret = hp4156b_spotMeas(vi, m(1), hp4156b_IM_MODE, range, md(1), st(1))
check_err vi, ret
ret = hp4156b_zeroOutput(vi, hp4156b_CH_ALL) ’37
disp_data1 vi, ret, m(), md(), st(), stress, duration
Line Description
1 Beginning of the stress_meas subprogram.
3 to 26 Declares variables, and defines the value.
28 to 35 Sets the SMU filter on for the all channels, sets the A/D converter
integration time, applies voltage to device, and performs spot
measurement. After that, calls the check_err subprogram (shown in
Table 3-1) to check if an error status is returned for the previous line.
37 to 38 Sets all channels to zero output state, and calls the disp_data1
subprogram to display measurement data.