Pulsed Sweep Measurement - Agilent Technologies B1500A User Manual

Table 3-10
Programming Examples for Visual Basic Users

Pulsed Sweep Measurement

Pulsed Sweep Measurement
Table 3-10 explains example subprograms that enable/disable measurement
channels (perform_meas), perform the pulsed sweep measurement (sweep_meas),
and save measurement result data into a file (save_data). This example measures
bipolar transistor Ic-Vc characteristics.
Pulsed Sweep Measurement Example
Sub perform_meas(vi As Long, ret As Long)
Dim m(3) As Long
m(0) = 4
m(1) = 2
m(2) = 1
ret = agb1500_setSwitch(vi, m(2), 1)
ret = agb1500_setSwitch(vi, m(1), 1)
ret = agb1500_setSwitch(vi, m(0), 1)
check_err vi, ret
sweep_meas vi, ret, m()
ret = agb1500_setSwitch(vi, agb1500_CH_ALL, 0)
check_err vi, ret
End Sub
Line
1 Beginning of the perform_meas subprogram.
3 to 6 Declares variables, and defines the value.
8 to 10 Enables measurement channels.
13 Calls the sweep_meas subprogram (next page) to perform
pulsed sweep measurement.
15 Disables measurement channels.
11 and 16 Calls the check_err subprogram (shown in Table 3-1) to check if
an error status is returned for the previous line.
18 End of the perform_meas subprogram.
3-44 Agilent B1500 VXIplug&play Driver User's Guide, Edition 3
'SMU port numbers
'SMU4: collector
'SMU2: base
'SMU1: emitter
Description
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