Agilent Technologies 4155C User Manual

4-18 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 4
Programming Examples for Visual Basic .NET Users
Multi-Channel Sweep Measurements
Measurement
Result Example
Vb (V), Ib (mA), Status_b, Ic (mA), Status_c, hfe
0.2999, -3E-06, 0, -6E-06, 0, 2
0.3499, -3E-06, 0, -3.3E-05, 0, 11
0.4, 2.3E-06, 0, -6E-06, 0, -2.60869565217391
0.45, 5.1E-06, 0, 0.00021, 0, 41.1764705882353
0.5, 1.33E-05, 0, 0.001864, 0, 140.15037593985
0.55, 6.8E-05, 0, 0.012705, 0, 186.838235294118
0.6, 0.0004727, 0, 0.087561, 0, 185.235878993019
0.65, 0.003016, 0, 0.597003, 0, 197.945291777188
0.7, 0.0188088, 0, 3.81314, 0, 202.731700055293
0.75, 0.0953332, 0, 18.5294, 0, 194.364607502948
0.8, 0.318431, 0, 54.3315, 0, 170.622521048516
Data save completed.
Do you want to perform measurement again?
Ag415x.ErrorQuery(err, msg) ’39
If err <> 0 Then Ag415x.ZeroOutput(0) : GoTo Check_err
Ag415x.Force(t(2), Hp4156b.ModeEnum.VoltageOutput, 0, ve, iecomp, 0) ’42
Ag415x.Force(t(1), Hp4156b.ModeEnum.VoltageOutput, 0, vc, iccomp, 0)
Ag415x.SweepMiv(mch, mode, range, rep, sc, md, st)
If rep <> nop1 Then Ag415x.ZeroOutput(0) : GoTo Check_err
For i = 0 To nop1 - 1 ’47
data(j, i) = Chr(13) & Chr(10) & sc(i) & ", " & md(2 * i) * 1000 & ", "
data(j, i) = data(j, i) & st(2 * i) & ", " & md(2 * i + 1) * 1000 & ", "
data(j, i) = data(j, i) & st(2 * i + 1) & ", " & md(2 * i + 1) / md(2 * i)
Next i
Ag415x.ZeroOutput(0) ’53
save_data(fname, title, val, data, nop1, nop2, Ag415x)
Check_err: ’56
If err <> 0 Then MsgBox("Instrument error: " & err & Chr(10) & msg, vbOKOnly, "")
If rep <> nop1 Then MsgBox("No. of data: " & rep & " (not " & nop1 & ")", vbOKOnly, "")
End Sub
Line Description
39 to 40 Checks if an error occurred. If an error is detected, forces 0 V and goes to Check_err.
42 to 45 Applies voltage to device and performs sweep measurement. After that, checks the number
of returned data. If it was not rep= nop1, forces 0 V and goes to Check_err.
47 to 51 Stores the measured data into the data valiable.
53 to 54 Applies 0 V from the all channels. And transfers the data stored in the data variable to the
save_data subprogram (see Table 4-1). And the subprogram will save the data into the
C:\Agilent\data\data5.txt file (CSV) and displays the data on a message box.
56 to 58 Displays a message box to show an error message if the error is detected.

Agilent Technologies 4155C Specifications

General

Brand	Agilent Technologies
Model	4155C
Category	Measuring Instruments
Language	English