Agilent Technologies B1500A Guide de l'utilisateur télécharger pdf (Page 140)

3-46 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3

Programming Examples for Visual Basic Users

Pulsed Sweep Measurement

ret = agb1500_setAdc(vi, agb1500_HSPEED_ADC,

agb1500_INTEG_MANUAL, smpl, agb1500_FLAG_OFF) ’47

ret = agb1500_setAdcType(vi, agb1500_CH_ALL,

agb1500_HSPEED_ADC)

ret = agb1500_resetTimestamp(vi)

check_err vi, ret ’50

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

Dim d_ib As Double ’secondary sweep step value (delta) ’54

If nop2 = 1 Then

d_ib = 0

Else

d_ib = (ib2 - ib1) / (nop2 - 1)

End If ’59

Dim ibo As Double ’secondary sweep source output ’61

ibo = ib1

i = 0 ’array counter for sweepIv returned data

Line Description

47 to 48 Sets the high speed ADC, and selects it for all measurement

channels.

49 Resets time stamp.

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

an error status is returned for the previous line.

52 Applies voltage to device.

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

for the step value of the secondary sweep source.

61 to 62 Declares a variable, and defines the value. This variable is used

for the output value of the secondary sweep source.

64 Sets the array counter i to 0.

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 207 208

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Agilent Technologies B1500A Guide de l'utilisateur Page 140