Agilent Technologies B1500A Guia do Utilizador descarregar pdf (Página 114)

3-20 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3

Programming Examples for Visual Basic Users

Staircase Sweep Measurement

ret = agb1500_resetTimestamp(vi) ’45

check_err vi, ret

ret = agb1500_force(vi, m(3), agb1500_VF_MODE, 0, 0, 0.05, 0)

ret = agb1500_force(vi, m(2), agb1500_VF_MODE, 0, 0, 0.05, 0)

Dim d_vg As Double ’secondary sweep step value (delta) ’51

If nop2 = 1 Then

d_vg = 0

Else

d_vg = (vg2 - vg1) / (nop2 - 1)

End If ’56

Dim vg As Double ’secondary sweep source output ’58

vg = vg1

i = 0 ’array counter for sweepIv returned data ’61

Line Description

45 Resets time stamp.

46 Calls the check_err subprogram (shown in Table 3-1) to check if

an error status is returned for the previous line.

48 to 49 Applies voltage to device.

51 to 56 Declares a variable, and defines the value. This variable is used

for the step value of the secondary sweep source.

58 to 59 Declares a variable, and defines the value. This variable is used

for the output value of the secondary sweep source.

61 Sets the array counter i to 0.

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 207 208

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Agilent Technologies B1500A Guia do Utilizador Página 114